Merge branch '1.21.1' into 1.21.3

Migrate `allowJumpAt256` to `allowJumpAtBuildLimit` in settings files

Dockerfile

@@ -5,7 +5,7 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt update -y
 
 RUN apt install \
-          openjdk-17-jdk \
+          openjdk-21-jdk \
 	  git \
           --assume-yes
 

README.md

@@ -14,6 +14,7 @@
   <a href="#Baritone"><img src="https://img.shields.io/badge/MC-1.19.2-brightgreen.svg" alt="Minecraft"/></a>
   <a href="#Baritone"><img src="https://img.shields.io/badge/MC-1.19.4-brightgreen.svg" alt="Minecraft"/></a>
   <a href="#Baritone"><img src="https://img.shields.io/badge/MC-1.20.1-brightgreen.svg" alt="Minecraft"/></a>
+  <a href="#Baritone"><img src="https://img.shields.io/badge/MC-1.21.3-brightgreen.svg" alt="Minecraft"/></a>
 </p>
 
 <p align="center">
@@ -70,6 +71,7 @@ Baritone is the pathfinding system used in [Impact](https://impactclient.net/) s
 | [1.20.1 Forge](https://github.com/cabaletta/baritone/releases/download/v1.10.1/baritone-api-forge-1.10.1.jar)   | [1.20.1 Fabric](https://github.com/cabaletta/baritone/releases/download/v1.10.1/baritone-api-fabric-1.10.1.jar) |
 | [1.20.3 Forge](https://github.com/cabaletta/baritone/releases/download/v1.10.2/baritone-api-forge-1.10.2.jar)   | [1.20.3 Fabric](https://github.com/cabaletta/baritone/releases/download/v1.10.2/baritone-api-fabric-1.10.2.jar) |
 | [1.20.4 Forge](https://github.com/cabaletta/baritone/releases/download/v1.10.2/baritone-api-forge-1.10.2.jar)   | [1.20.4 Fabric](https://github.com/cabaletta/baritone/releases/download/v1.10.2/baritone-api-fabric-1.10.2.jar) |
+| [1.21.3 Forge](https://github.com/cabaletta/baritone/releases/download/v1.11.1/baritone-api-forge-1.11.1.jar)   | [1.21.3 Fabric](https://github.com/cabaletta/baritone/releases/download/v1.11.1/baritone-api-fabric-1.11.1.jar) |
 
 **Message for 2b2t players looking for 1.19/1.20 Baritone** If you like, please try the beta for Baritone Elytra for 2b2t, find it in #announcements of [the Baritone discord](http://discord.gg/s6fRBAUpmr). It supports 1.19.4 and 1.20.1, Forge or Fabric. If you have to see it to believe it, watch [this YouTube video](https://youtu.be/NnSlQi-68eQ).
 

SETUP.md

@@ -1,78 +1,87 @@
 # Installation
 
-The easiest way to install Baritone is to install [Impact](https://impactclient.net/), which comes with Baritone.
-
-You can also use a custom version json for Minecraft, with the [1.14.4](https://www.dropbox.com/s/rkml3hjokd3qv0m/1.14.4-Baritone.zip?dl=1) version or the [1.15.2](https://www.dropbox.com/s/8rx6f0kts9hvd4f/1.15.2-Baritone.zip?dl=1) version or the [1.16.5](https://www.dropbox.com/s/i6f292o2i7o9acp/1.16.5-Baritone.zip?dl=1) version.
+The easiest way to install Baritone is to install it as Forge/Neoforge/Fabric mod, but if you know how you can also use with a custom `version.json`
+(Examples: [1.14.4](https://www.dropbox.com/s/rkml3hjokd3qv0m/1.14.4-Baritone.zip?dl=1), [1.15.2](https://www.dropbox.com/s/8rx6f0kts9hvd4f/1.15.2-Baritone.zip?dl=1), [1.16.5](https://www.dropbox.com/s/i6f292o2i7o9acp/1.16.5-Baritone.zip?dl=1)).
 
 Once Baritone is installed, look [here](USAGE.md) for instructions on how to use it.
 
 ## Prebuilt official releases
-These releases are not always completely up to date with latest features, and are only released from `master`. (so if you want `backfill-2` branch for example, you'll have to build it yourself)
+Releases are made rarely and are not always up to date with the latest features and bug fixes.
 
 Link to the releases page: [Releases](https://github.com/cabaletta/baritone/releases)
 
-v1.2.* is for 1.12.2, v1.3.* is for 1.13.2, v1.4.* is for 1.14.4, v1.5.* is for 1.15.2, v1.6.* is for 1.16.5, v1.7.* is for 1.17.1, v1.8.* is for 1.18.1
+The mapping between major Minecraft versions and major Baritone versions is as follows
+| Minecraft version | 1.12 | 1.13 | 1.14 | 1.15 | 1.16 | 1.17 | 1.18 | 1.19 | 1.20  | 1.21  |
+|-------------------|------|------|------|------|------|------|------|------|-------|-------|
+| Baritone version  | v1.2 | v1.3 | v1.4 | v1.5 | v1.6 | v1.7 | v1.8 | v1.9 | v1.10 | v1.11 |
 
 Any official release will be GPG signed by leijurv (44A3EA646EADAC6A). Please verify that the hash of the file you download is in `checksums.txt` and that `checksums_signed.asc` is a valid signature by that public keys of `checksums.txt`. 
 
-The build is fully deterministic and reproducible, and you can verify Travis did it properly by running `docker build --no-cache -t cabaletta/baritone .` yourself and comparing the shasum. This works identically on Travis, Mac, and Linux (if you have docker on Windows, I'd be grateful if you could let me know if it works there too).
+The build is fully deterministic and reproducible, and you can verify that by running `docker build --no-cache -t cabaletta/baritone .` yourself and comparing the shasum. This works identically on Travis, Mac, and Linux (if you have docker on Windows, I'd be grateful if you could let me know if it works there too).
 
 
 ## Artifacts
 
-Building Baritone will result in 5 artifacts created in the ``dist`` directory. These are the same as the artifacts created in the [releases](https://github.com/cabaletta/baritone/releases).
+Building Baritone will create the final artifacts in the ``dist`` directory. These are the same as the artifacts created in the [releases](https://github.com/cabaletta/baritone/releases).
 
-**The Forge and Fabric releases can simply be added as a Forge/Fabric mods.**
+**The Forge, NeoForge and Fabric releases can simply be added as a Forge/Neoforge/Fabric mods.**
 
-If another one of your Forge mods has a Baritone integration, you want `baritone-api-forge-VERSION.jar`. Otherwise, you want `baritone-standalone-forge-VERSION.jar`
+If another one of your other mods has a Baritone integration, you want `baritone-api-*-VERSION.jar`.
+If you want to report a bug and spare us some effort, you want `baritone-unoptimized-*-VERSION.jar`.
+Otherwise, you want `baritone-standalone-*-VERSION.jar`
 
+Here's what the various qualifiers mean
 - **API**: Only the non-api packages are obfuscated. This should be used in environments where other mods would like to use Baritone's features.
-- **Forge/Fabric API**: Same as API, but packaged for Forge/Fabric. This should be used where another mod has a Baritone integration.
-- **Standalone**: Everything is obfuscated. This should be used in environments where there are no other mods present that would like to use Baritone's features.
-- **Forge/Fabric Standalone**: Same as Standalone, but packaged for Forge/Fabric. This should be used when Baritone is your only Forge/Fabric mod, or none of your other Forge/Fabric mods integrate with Baritone.
-- **Unoptimized**: Nothing is obfuscated. This shouldn't be used ever in production.
-- **Forge/Fabric Unoptimized**: Same as Unoptimized, but packaged for Forge/Fabric.
+- **Standalone**: Everything is obfuscated. Other mods cannot use Baritone, but you get a bit of extra performance.
+- **Unoptimized**: Nothing is obfuscated. This shouldn't be used in production, but is really helpful for crash reports.
+
+- **No loader**: Loadable as a launchwrapper tweaker against vanilla Minecraft using a custom `version.json`.
+- **Forge/Neoforge/Fabric**: Loadable as a standard mod using the respective loader. The fabric build may or may not work on Quilt.
+
+If you build from source you will also find mapping files in the `dist` directory. These contain the renamings done by ProGuard and are useful if you want to read obfuscated stack traces.
 
 ## Build it yourself
 - Clone or download Baritone
 
   ![Image](https://i.imgur.com/kbqBtoN.png)
-  - If you choose to download, make sure you extract the ZIP archive.
+  - If you choose to download, make sure you download the correct branch and extract the ZIP archive.
 - Follow one of the instruction sets below, based on your preference
 
 ## Command Line
 On Mac OSX and Linux, use `./gradlew` instead of `gradlew`.
 
-If you have errors with a package missing please make sure you have setup your environment, and are using Oracle JDK 8 for 1.12.2-1.16.5, JDK 16+ for 1.17.1, and JDK 17+ for 1.18.1.
-
-To check which java you are using do 
-`java -version` in a command prompt or terminal.
-If you are using anything above OpenJDK 8 for 1.12.2-1.16.5, it might not work because the Java distributions above JDK 8 using may not have the needed javax classes.
+The recommended Java versions by Minecraft version are
+| Minecraft version             | Java version  |
+|-------------------------------|---------------|
+| 1.12.2 - 1.16.5               | 8             |
+| 1.17.1                        | 16            |
+| 1.18.2 - 1.20.4               | 17            |
+| 1.20.5 - 1.21.4               | 21            |
 
 Download java: https://adoptium.net/
-#### macOS guide
-In order to get JDK 8, Try running the following command:
-`% /usr/libexec/java_home -V`
-If it doesn't work try this guide: https://stackoverflow.com/questions/46513639/how-to-downgrade-java-from-9-to-8-on-a-macos-eclipse-is-not-running-with-java-9
 
-If you see something like
-
-`% 1.8.0_VERSION, x86_64:	"Java SE 8"	/Library/Java/JavaVirtualMachines/jdk1.8.0_VERSION.jdk/Contents/Home`
-
-in the list then you've got JDK 8 installed. 
-In order to get JDK 8 running in the **current terminal window** you will have to run this command: 
-
-`% export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)`
-
-To add OpenJDK 8 to your PATH add the export line to the end of your `.zshrc / .bashrc` if you want it to apply to each new terminal. If you're using bash change the .bachrc and if you're using zsh change the .zshrc
+To check which java version you are using do `java -version` in a command prompt or terminal.
 
 ### Building Baritone
 
 These tasks depend on the minecraft version, but are (for the most part) standard for building mods.
 
-for more details, see [the build ci action](/.github/workflows/gradle_build.yml)
+For more details, see [the build ci action](/.github/workflows/gradle_build.yml) of the branch you want to build.
+
+For most branches `gradlew build` should build everything, but there are exceptions and this file might be out of date.
+
+More specifically, on older branches the setup used to be that `gradlew build` builds the tweaker jar
+and `gradlew build -Pbaritone.forge_build` / `gradlew build -Pbaritone.fabric_build` are needed to build
+for Forge/Fabric instead. And you might have to run `setupDecompWorkspace` first.
 
 ## IntelliJ
 - Open the project in IntelliJ as a Gradle project
 - Refresh the Gradle project (or, to be safe, just restart IntelliJ)
-- depending on the minecraft version, you may need to run `setupDecompWorkspace` or `genIntellijRuns` in order to get everything working
+- Depending on the minecraft version, you may need to run `setupDecompWorkspace` or `genIntellijRuns` in order to get everything working
+
+## Github Actions
+Most branches have a CI workflow at `.github/workflows/gradle_build.yml`. If you fork this repository and enable actions for your fork
+you can push a dummy commit to trigger it and have GitHub build Baritone for you.
+
+If the commit you want to build is less than 90 days old, you can also find the corresponding workflow run in
+[this list](https://github.com/cabaletta/baritone/actions/workflows/gradle_build.yml) and download the artifacts from there.

build.gradle

@@ -38,7 +38,7 @@ allprojects {
     group = rootProject.maven_group
 
     sourceCompatibility = targetCompatibility = JavaVersion.toVersion(project.java_version)
-    
+
     java {
         toolchain {
             languageVersion.set(JavaLanguageVersion.of(sourceCompatibility.majorVersion.toInteger()))
@@ -78,11 +78,9 @@ allprojects {
     }
 
     dependencies {
-        compileOnly "org.spongepowered:mixin:0.8"
-        compileOnly "org.ow2.asm:asm:9.7"
-        // The following line declares the yarn mappings you may select this one as well.
-        // mappings "net.fabricmc:yarn:1.17.1+build.32:v2"
-        //launchImplementation('dev.babbaj:nether-pathfinder:1.3.0')
+        compileOnly "org.spongepowered:mixin:${project.mixin_version}"
+        compileOnly "org.ow2.asm:asm:${project.asm_version}"
+
         implementation "dev.babbaj:nether-pathfinder:${project.nether_pathfinder_version}"
 
         implementation 'com.google.code.findbugs:jsr305:3.0.2'

fabric/src/main/resources/fabric.mod.json

@@ -10,7 +10,8 @@
   ],
   "contact": {
     "homepage": "https://github.com/cabaletta/baritone",
-    "sources": "https://github.com/cabaletta/baritone"
+    "sources": "https://github.com/cabaletta/baritone",
+    "issues": "https://github.com/cabaletta/baritone/issues" 
   },
 
   "license": "LGPL-3.0",
@@ -25,6 +26,13 @@
 
   "depends": {
     "fabricloader": ">=0.14.22",
-    "minecraft": "1.21"
+    "minecraft": ["1.21.2","1.21.3"]
+  },
+  "custom": {
+    "modmenu": {
+      "links": {
+        "modmenu.discord": "https://discord.gg/s6fRBAUpmr"
+      }
+    }
   }
 }

forge/src/main/resources/META-INF/mods.toml

@@ -35,6 +35,6 @@ A Minecraft pathfinder bot.
 modId="minecraft"
 mandatory=true
 # This version range declares a minimum of the current minecraft version up to but not including the next major version
-versionRange="[1.21]"
+versionRange="[1.21.2, 1.21.3]"
 ordering="NONE"
 side="BOTH"

gradle.properties

@@ -2,18 +2,23 @@ org.gradle.jvmargs=-Xmx4G
 
 available_loaders=fabric,forge,neoforge,tweaker
 
-mod_version=1.11.0
+mod_version=1.12.0
 maven_group=baritone
 archives_base_name=baritone
 
 java_version=21
 
-minecraft_version=1.21
+minecraft_version=1.21.3
 
-forge_version=51.0.16
+forge_version=53.0.7
 
-neoforge_version=20-beta
+neoforge_version=6-beta
 
-fabric_version=0.15.11
+fabric_version=0.16.7
 
 nether_pathfinder_version=1.4.1
+
+// These dependencies are used for common and tweaker
+// while mod loaders usually ship their own version
+mixin_version=0.8.5
+asm_version=9.7

neoforge/build.gradle

@@ -26,7 +26,7 @@ archivesBaseName = archivesBaseName + "-neoforge"
 
 unimined.minecraft {
 
-    neoForged {
+    neoForge {
         loader project.neoforge_version
         mixinConfig ["mixins.baritone.json"]
     }

neoforge/src/main/resources/META-INF/neoforge.mods.toml

@@ -35,6 +35,6 @@ A Minecraft pathfinder bot.
 modId="minecraft"
 type="required"
 # This version range declares a minimum of the current minecraft version up to but not including the next major version
-versionRange="[1.21]"
+versionRange="[1.21.2,1.21.3]"
 ordering="NONE"
 side="BOTH"

scripts/proguard.pro

@@ -54,6 +54,11 @@
 -dontwarn baritone.utils.schematic.schematica.**
 -dontwarn baritone.utils.schematic.litematica.**
 
+# nether-pathfinder uses JNI to acess its own classes
+# and some of our builds include it before running proguard
+# conservatively keep all of it, even though only PathSegment.<init> is needed
+-keep,allowoptimization class dev.babbaj.pathfinder.** { *; }
+
 # Keep - Applications. Keep all application classes, along with their 'main'
 # methods.
 -keepclasseswithmembers public class * {

src/api/java/baritone/api/Settings.java

@@ -29,6 +29,9 @@ import net.minecraft.network.chat.Component;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.Mirror;
+import net.minecraft.world.level.block.Rotation;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -74,6 +77,16 @@ public final class Settings {
      */
     public final Setting<Boolean> allowPlace = new Setting<>(true);
 
+    /**
+     * Allow Baritone to place blocks in fluid source blocks
+     */
+    public final Setting<Boolean> allowPlaceInFluidsSource = new Setting<>(true);
+
+    /**
+     * Allow Baritone to place blocks in flowing fluid
+     */
+    public final Setting<Boolean> allowPlaceInFluidsFlow = new Setting<>(true);
+
     /**
      * Allow Baritone to move items in your inventory to your hotbar
      */
@@ -172,6 +185,13 @@ public final class Settings {
      * <p>
      * Defaults to false because this fails on constantiam. Please let me know if this is ever disabled. Please.
      */
+    public final Setting<Boolean> allowJumpAtBuildLimit = new Setting<>(false);
+
+    /**
+     * Just here so mods that use the API don't break. Does nothing.
+     */
+    @Deprecated
+    @JavaOnly
     public final Setting<Boolean> allowJumpAt256 = new Setting<>(false);
 
     /**
@@ -653,13 +673,6 @@ public final class Settings {
      */
     public final Setting<Boolean> logAsToast = new Setting<>(false);
 
-    /**
-     * The time of how long the message in the pop-up will display
-     * <p>
-     * If below 1000L (1sec), it's better to disable this
-     */
-    public final Setting<Long> toastTimer = new Setting<>(5000L);
-
     /**
      * Print all the debug messages to chat
      */
@@ -1089,6 +1102,28 @@ public final class Settings {
      */
     public final Setting<Boolean> schematicOrientationZ = new Setting<>(false);
 
+    /**
+     * Rotates the schematic before building it.
+     * Possible values are
+     * <ul>
+     *  <li> NONE - No rotation </li>
+     *  <li> CLOCKWISE_90 - Rotate 90° clockwise </li>
+     *  <li> CLOCKWISE_180 - Rotate 180° clockwise </li>
+     *  <li> COUNTERCLOCKWISE_90 - Rotate 270° clockwise </li>
+     * </ul>
+     */
+    public final Setting<Rotation> buildSchematicRotation = new Setting<>(Rotation.NONE);
+
+    /**
+     * Mirrors the schematic before building it.
+     * Possible values are
+     * <ul>
+     *  <li> FRONT_BACK - mirror the schematic along its local x axis </li>
+     *  <li> LEFT_RIGHT - mirror the schematic along its local z axis </li>
+     * </ul>
+     */
+    public final Setting<Mirror> buildSchematicMirror = new Setting<>(Mirror.NONE);
+
     /**
      * The fallback used by the build command when no extension is specified. This may be useful if schematics of a
      * particular format are used often, and the user does not wish to have to specify the extension with every usage.
@@ -1200,6 +1235,11 @@ public final class Settings {
      */
     public final Setting<Integer> followRadius = new Setting<>(3);
 
+    /**
+     * The maximum distance to the entity you're following
+     */
+    public final Setting<Integer> followTargetMaxDistance = new Setting<>(0);
+
     /**
      * Turn this on if your exploration filter is enormous, you don't want it to check if it's done,
      * and you are just fine with it just hanging on completion

src/api/java/baritone/api/command/datatypes/BlockById.java

@@ -23,17 +23,11 @@ import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.level.block.Block;
 
-import java.util.regex.Pattern;
 import java.util.stream.Stream;
 
 public enum BlockById implements IDatatypeFor<Block> {
     INSTANCE;
 
-    /**
-     * Matches (domain:)?name? where domain and name are [a-z0-9_.-]+ and [a-z0-9/_.-]+ respectively.
-     */
-    private static Pattern PATTERN = Pattern.compile("(?:[a-z0-9_.-]+:)?[a-z0-9/_.-]*");
-
     @Override
     public Block get(IDatatypeContext ctx) throws CommandException {
         ResourceLocation id = ResourceLocation.parse(ctx.getConsumer().getString());
@@ -48,10 +42,6 @@ public enum BlockById implements IDatatypeFor<Block> {
     public Stream<String> tabComplete(IDatatypeContext ctx) throws CommandException {
         String arg = ctx.getConsumer().getString();
 
-        if (!PATTERN.matcher(arg).matches()) {
-            return Stream.empty();
-        }
-
         return new TabCompleteHelper()
                 .append(
                         BuiltInRegistries.BLOCK.keySet()

src/api/java/baritone/api/command/datatypes/ItemById.java

@@ -0,0 +1,53 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package baritone.api.command.datatypes;
+
+import baritone.api.command.exception.CommandException;
+import baritone.api.command.helpers.TabCompleteHelper;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.Item;
+
+import java.util.stream.Stream;
+
+public enum ItemById implements IDatatypeFor<Item> {
+    INSTANCE;
+
+    @Override
+    public Item get(IDatatypeContext ctx) throws CommandException {
+        ResourceLocation id = ResourceLocation.parse(ctx.getConsumer().getString());
+        Item item;
+        if ((item = BuiltInRegistries.ITEM.getOptional(id).orElse(null)) == null) {
+            throw new IllegalArgumentException("No item found by that id");
+        }
+        return item;
+    }
+
+    @Override
+    public Stream<String> tabComplete(IDatatypeContext ctx) throws CommandException {
+        return new TabCompleteHelper()
+                .append(
+                        BuiltInRegistries.BLOCK.keySet()
+                                .stream()
+                                .map(ResourceLocation::toString)
+                )
+                .filterPrefixNamespaced(ctx.getConsumer().getString())
+                .sortAlphabetically()
+                .stream();
+    }
+}

src/api/java/baritone/api/command/helpers/TabCompleteHelper.java

@@ -212,7 +212,12 @@ public class TabCompleteHelper {
      * @return This {@link TabCompleteHelper}
      */
     public TabCompleteHelper filterPrefixNamespaced(String prefix) {
-        return filterPrefix(ResourceLocation.parse(prefix).toString());
+        ResourceLocation loc = ResourceLocation.tryParse(prefix);
+        if (loc == null) {
+            stream = Stream.empty();
+            return this;
+        }
+        return filterPrefix(loc.toString());
     }
 
     /**

src/api/java/baritone/api/pathing/goals/GoalRunAway.java

@@ -44,7 +44,7 @@ public class GoalRunAway implements Goal {
 
     public GoalRunAway(double distance, Integer maintainY, BlockPos... from) {
         if (from.length == 0) {
-            throw new IllegalArgumentException();
+            throw new IllegalArgumentException("Positions to run away from must not be empty");
         }
         this.from = from;
         this.distanceSq = (int) (distance * distance);

src/api/java/baritone/api/process/IBuilderProcess.java

@@ -24,6 +24,7 @@ import net.minecraft.core.Vec3i;
 import net.minecraft.world.level.block.state.BlockState;
 import java.io.File;
 import java.util.List;
+import java.util.Optional;
 
 /**
  * @author Brady
@@ -74,4 +75,17 @@ public interface IBuilderProcess extends IBaritoneProcess {
      * cause it to give up. This is updated every tick, but only while the builder process is active.
      */
     List<BlockState> getApproxPlaceable();
+    /**
+     * Returns the lower bound of the current mining layer if mineInLayers is true.
+     * If mineInLayers is false, this will return an empty optional.
+     * @return The lower bound of the current mining layer
+     */
+    Optional<Integer> getMinLayer();
+
+    /**
+     * Returns the upper bound of the current mining layer if mineInLayers is true.
+     * If mineInLayers is false, this will return an empty optional.
+     * @return The upper bound of the current mining layer
+     */
+    Optional<Integer> getMaxLayer();
 }

src/api/java/baritone/api/process/IFollowProcess.java

@@ -17,9 +17,11 @@
 
 package baritone.api.process;
 
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.item.ItemStack;
+
 import java.util.List;
 import java.util.function.Predicate;
-import net.minecraft.world.entity.Entity;
 
 /**
  * @author Brady
@@ -34,6 +36,13 @@ public interface IFollowProcess extends IBaritoneProcess {
      */
     void follow(Predicate<Entity> filter);
 
+    /**
+     * Try to pick up any items matching this predicate
+     *
+     * @param filter the predicate
+     */
+    void pickup(Predicate<ItemStack> filter);
+
     /**
      * @return The entities that are currently being followed. null if not currently following, empty if nothing matches the predicate
      */

src/api/java/baritone/api/schematic/ISchematicSystem.java

@@ -21,6 +21,7 @@ import baritone.api.command.registry.Registry;
 import baritone.api.schematic.format.ISchematicFormat;
 
 import java.io.File;
+import java.util.List;
 import java.util.Optional;
 
 /**
@@ -41,4 +42,9 @@ public interface ISchematicSystem {
      * @return The corresponding format for the file, {@link Optional#empty()} if no candidates were found.
      */
     Optional<ISchematicFormat> getByFile(File file);
+
+    /**
+     * @return A list of file extensions used by supported formats
+     */
+    List<String> getFileExtensions();
 }

src/api/java/baritone/api/schematic/MirroredSchematic.java

@@ -0,0 +1,114 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package baritone.api.schematic;
+
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.block.Mirror;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class MirroredSchematic implements ISchematic {
+
+    private final ISchematic schematic;
+    private final Mirror mirror;
+
+    public MirroredSchematic(ISchematic schematic, Mirror mirror) {
+        this.schematic = schematic;
+        this.mirror = mirror;
+    }
+
+    @Override
+    public boolean inSchematic(int x, int y, int z, BlockState currentState) {
+        return schematic.inSchematic(
+                mirrorX(x, widthX(), mirror),
+                y,
+                mirrorZ(z, lengthZ(), mirror),
+                mirror(currentState, mirror)
+        );
+    }
+
+    @Override
+    public BlockState desiredState(int x, int y, int z, BlockState current, List<BlockState> approxPlaceable) {
+        return mirror(schematic.desiredState(
+                mirrorX(x, widthX(), mirror),
+                y,
+                mirrorZ(z, lengthZ(), mirror),
+                mirror(current, mirror),
+                mirror(approxPlaceable, mirror)
+        ), mirror);
+    }
+
+    @Override
+    public void reset() {
+        schematic.reset();
+    }
+
+    @Override
+    public int widthX() {
+        return schematic.widthX();
+    }
+
+    @Override
+    public int heightY() {
+        return schematic.heightY();
+    }
+
+    @Override
+    public int lengthZ() {
+        return schematic.lengthZ();
+    }
+
+    private static int mirrorX(int x, int sizeX, Mirror mirror) {
+        switch (mirror) {
+            case NONE:
+            case LEFT_RIGHT:
+                return x;
+            case FRONT_BACK:
+                return sizeX - x - 1;
+        }
+        throw new IllegalArgumentException("Unknown mirror");
+    }
+
+    private static int mirrorZ(int z, int sizeZ, Mirror mirror) {
+        switch (mirror) {
+            case NONE:
+            case FRONT_BACK:
+                return z;
+            case LEFT_RIGHT:
+                return sizeZ - z - 1;
+        }
+        throw new IllegalArgumentException("Unknown mirror");
+    }
+
+    private static BlockState mirror(BlockState state, Mirror mirror) {
+        if (state == null) {
+            return null;
+        }
+        return state.mirror(mirror);
+    }
+
+    private static List<BlockState> mirror(List<BlockState> states, Mirror mirror) {
+        if (states == null) {
+            return null;
+        }
+        return states.stream()
+                .map(s -> mirror(s, mirror))
+                .collect(Collectors.toList());
+    }
+}

src/api/java/baritone/api/schematic/RotatedSchematic.java

@@ -0,0 +1,136 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package baritone.api.schematic;
+
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.block.Rotation;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class RotatedSchematic implements ISchematic {
+
+    private final ISchematic schematic;
+    private final Rotation rotation;
+    private final Rotation inverseRotation;
+
+    public RotatedSchematic(ISchematic schematic, Rotation rotation) {
+        this.schematic = schematic;
+        this.rotation = rotation;
+        // I don't think a 14 line switch would improve readability
+        this.inverseRotation = rotation.getRotated(rotation).getRotated(rotation);
+    }
+
+    @Override
+    public boolean inSchematic(int x, int y, int z, BlockState currentState) {
+        return schematic.inSchematic(
+                rotateX(x, z, widthX(), lengthZ(), inverseRotation),
+                y,
+                rotateZ(x, z, widthX(), lengthZ(), inverseRotation),
+                rotate(currentState, inverseRotation)
+        );
+    }
+
+    @Override
+    public BlockState desiredState(int x, int y, int z, BlockState current, List<BlockState> approxPlaceable) {
+        return rotate(schematic.desiredState(
+                rotateX(x, z, widthX(), lengthZ(), inverseRotation),
+                y,
+                rotateZ(x, z, widthX(), lengthZ(), inverseRotation),
+                rotate(current, inverseRotation),
+                rotate(approxPlaceable, inverseRotation)
+        ), rotation);
+    }
+
+    @Override
+    public void reset() {
+        schematic.reset();
+    }
+
+    @Override
+    public int widthX() {
+        return flipsCoordinates(rotation) ? schematic.lengthZ() : schematic.widthX();
+    }
+
+    @Override
+    public int heightY() {
+        return schematic.heightY();
+    }
+
+    @Override
+    public int lengthZ() {
+        return flipsCoordinates(rotation) ? schematic.widthX() : schematic.lengthZ();
+    }
+
+    /**
+     * Wether {@code rotation} swaps the x and z components
+     */
+    private static boolean flipsCoordinates(Rotation rotation) {
+        return rotation == Rotation.CLOCKWISE_90 || rotation == Rotation.COUNTERCLOCKWISE_90;
+    }
+
+    /**
+     * The x component of x,y after applying the rotation
+     */
+    private static int rotateX(int x, int z, int sizeX, int sizeZ, Rotation rotation) {
+        switch (rotation) {
+            case NONE:
+                return x;
+            case CLOCKWISE_90:
+                return sizeZ - z - 1;
+            case CLOCKWISE_180:
+                return sizeX - x - 1;
+            case COUNTERCLOCKWISE_90:
+                return z;
+        }
+        throw new IllegalArgumentException("Unknown rotation");
+    }
+
+    /**
+     * The z component of x,y after applying the rotation
+     */
+    private static int rotateZ(int x, int z, int sizeX, int sizeZ, Rotation rotation) {
+        switch (rotation) {
+            case NONE:
+                return z;
+            case CLOCKWISE_90:
+                return x;
+            case CLOCKWISE_180:
+                return sizeZ - z - 1;
+            case COUNTERCLOCKWISE_90:
+                return sizeX - x - 1;
+        }
+        throw new IllegalArgumentException("Unknown rotation");
+    }
+
+    private static BlockState rotate(BlockState state, Rotation rotation) {
+        if (state == null) {
+            return null;
+        }
+        return state.rotate(rotation);
+    }
+
+    private static List<BlockState> rotate(List<BlockState> states, Rotation rotation) {
+        if (states == null) {
+            return null;
+        }
+        return states.stream()
+                .map(s -> rotate(s, rotation))
+                .collect(Collectors.toList());
+    }
+}

src/api/java/baritone/api/schematic/format/ISchematicFormat.java

@@ -23,6 +23,7 @@ import baritone.api.schematic.IStaticSchematic;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.List;
 
 /**
  * The base of a {@link ISchematic} file format
@@ -42,4 +43,9 @@ public interface ISchematicFormat {
      * @return Whether or not the specified file matches this schematic format
      */
     boolean isFileType(File file);
+
+    /**
+     * @return A list of file extensions used by this format
+     */
+    List<String> getFileExtensions();
 }

src/api/java/baritone/api/utils/BetterBlockPos.java

@@ -157,7 +157,7 @@ public final class BetterBlockPos extends BlockPos {
 
     @Override
     public BetterBlockPos relative(Direction dir) {
-        Vec3i vec = dir.getNormal();
+        Vec3i vec = dir.getUnitVec3i();
         return new BetterBlockPos(x + vec.getX(), y + vec.getY(), z + vec.getZ());
     }
 
@@ -166,7 +166,7 @@ public final class BetterBlockPos extends BlockPos {
         if (dist == 0) {
             return this;
         }
-        Vec3i vec = dir.getNormal();
+        Vec3i vec = dir.getUnitVec3i();
         return new BetterBlockPos(x + vec.getX() * dist, y + vec.getY() * dist, z + vec.getZ() * dist);
     }
 

src/api/java/baritone/api/utils/BlockOptionalMeta.java

@@ -21,27 +21,24 @@ import baritone.api.utils.accessor.IItemStack;
 import baritone.api.utils.accessor.ILootTable;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
-import net.minecraft.Util;
 import net.minecraft.client.Minecraft;
-import net.minecraft.commands.Commands;
+import net.minecraft.core.HolderLookup;
 import net.minecraft.core.LayeredRegistryAccess;
+import net.minecraft.core.Registry;
 import net.minecraft.core.RegistryAccess;
 import net.minecraft.resources.RegistryDataLoader;
 import net.minecraft.resources.ResourceKey;
-import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.RegistryLayer;
 import net.minecraft.server.ReloadableServerRegistries;
-import net.minecraft.server.ReloadableServerResources;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.server.packs.PackType;
 import net.minecraft.server.packs.VanillaPackResources;
-import net.minecraft.server.packs.repository.PackRepository;
 import net.minecraft.server.packs.repository.ServerPacksSource;
 import net.minecraft.server.packs.resources.CloseableResourceManager;
 import net.minecraft.server.packs.resources.MultiPackResourceManager;
-import net.minecraft.server.packs.resources.ResourceManager;
+import net.minecraft.tags.TagLoader;
 import net.minecraft.world.RandomSequences;
 import net.minecraft.world.flag.FeatureFlagSet;
 import net.minecraft.world.item.Item;
@@ -49,14 +46,12 @@ import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.Items;
 import net.minecraft.world.level.CustomSpawner;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.WorldDataConfiguration;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.block.state.properties.Property;
 import net.minecraft.world.level.dimension.LevelStem;
 import net.minecraft.world.level.storage.LevelStorageSource;
 import net.minecraft.world.level.storage.ServerLevelData;
-import net.minecraft.world.level.storage.loot.BuiltInLootTables;
 import net.minecraft.world.level.storage.loot.LootContext;
 import net.minecraft.world.level.storage.loot.LootParams;
 import net.minecraft.world.level.storage.loot.LootTable;
@@ -229,8 +224,8 @@ public final class BlockOptionalMeta {
 
     private static synchronized List<Item> drops(Block b) {
         return drops.computeIfAbsent(b, block -> {
-            ResourceLocation lootTableLocation = block.getLootTable().location();
-            if (lootTableLocation.equals(BuiltInLootTables.EMPTY.location())) {
+            Optional<ResourceKey<LootTable>> optionalLootTableKey = block.getLootTable();
+            if (optionalLootTableKey.isEmpty()) {
                 return Collections.emptyList();
             } else {
                 List<Item> items = new ArrayList<>();
@@ -251,13 +246,13 @@ public final class BlockOptionalMeta {
     }
 
     private static List<ItemStack> getDrops(Block state, LootParams.Builder params) {
-        ResourceKey<LootTable> lv = state.getLootTable();
-        if (lv == BuiltInLootTables.EMPTY) {
+        Optional<ResourceKey<LootTable>> lv = state.getLootTable();
+        if (lv.isEmpty()) {
             return Collections.emptyList();
         } else {
             LootParams lv2 = params.withParameter(LootContextParams.BLOCK_STATE, state.defaultBlockState()).create(LootContextParamSets.BLOCK);
             ServerLevelStub lv3 = (ServerLevelStub) lv2.getLevel();
-            LootTable lv4 = lv3.holder().getLootTable(lv);
+            LootTable lv4 = lv3.holder().getLootTable(lv.get());
             return((ILootTable) lv4).invokeGetRandomItems(new LootContext.Builder(lv2).withOptionalRandomSeed(1).create(null));
         }
     }
@@ -305,41 +300,33 @@ public final class BlockOptionalMeta {
         }
 
         public static CompletableFuture<RegistryAccess> load() {
-            PackRepository packRepository = Minecraft.getInstance().getResourcePackRepository();
-            CloseableResourceManager closeableResourceManager = new MultiPackResourceManager(PackType.SERVER_DATA, packRepository.openAllSelected());
-            LayeredRegistryAccess<RegistryLayer> layeredRegistryAccess = loadAndReplaceLayer(
-                closeableResourceManager, RegistryLayer.createRegistryAccess(), RegistryLayer.WORLDGEN, RegistryDataLoader.WORLDGEN_REGISTRIES
+            // Simplified from {@link net.minecraft.server.WorldLoader#load()}
+            CloseableResourceManager closeableResourceManager = new MultiPackResourceManager(
+                PackType.SERVER_DATA,
+                List.of(ServerPacksSource.createVanillaPackSource())
             );
-            return ReloadableServerResources.loadResources(
-                closeableResourceManager,
+            LayeredRegistryAccess<RegistryLayer> baseLayeredRegistry = RegistryLayer.createRegistryAccess();
+            List<Registry.PendingTags<?>> pendingTags = TagLoader.loadTagsForExistingRegistries(
+                closeableResourceManager, baseLayeredRegistry.getLayer(RegistryLayer.STATIC)
+            );
+            List<HolderLookup.RegistryLookup<?>> worldGenRegistryLookupList = TagLoader.buildUpdatedLookups(
+                baseLayeredRegistry.getAccessForLoading(RegistryLayer.WORLDGEN),
+                pendingTags
+            );
+            LayeredRegistryAccess<RegistryLayer> layeredRegistryAccess = baseLayeredRegistry.replaceFrom(
+                RegistryLayer.WORLDGEN,
+                RegistryDataLoader.load(
+                    closeableResourceManager,
+                    worldGenRegistryLookupList,
+                    RegistryDataLoader.WORLDGEN_REGISTRIES
+                )
+            );
+            return ReloadableServerRegistries.reload(
                 layeredRegistryAccess,
-                WorldDataConfiguration.DEFAULT.enabledFeatures(),
-                Commands.CommandSelection.INTEGRATED,
-                2,
-                Runnable::run,
+                pendingTags,
+                closeableResourceManager,
                 Minecraft.getInstance()
-            ).thenApply(reloadableServerResources -> reloadableServerResources.fullRegistries().get());
+            ).thenApply(r -> r.layers().compositeAccess());
         }
-
-        private static LayeredRegistryAccess<RegistryLayer> loadAndReplaceLayer(
-            ResourceManager resourceManager,
-            LayeredRegistryAccess<RegistryLayer> registryAccess,
-            RegistryLayer registryLayer,
-            List<RegistryDataLoader.RegistryData<?>> registryData
-        ) {
-            RegistryAccess.Frozen frozen = loadLayer(resourceManager, registryAccess, registryLayer, registryData);
-            return registryAccess.replaceFrom(registryLayer, frozen);
-        }
-
-        private static RegistryAccess.Frozen loadLayer(
-            ResourceManager resourceManager,
-            LayeredRegistryAccess<RegistryLayer> registryAccess,
-            RegistryLayer registryLayer,
-            List<RegistryDataLoader.RegistryData<?>> registryData
-        ) {
-            RegistryAccess.Frozen frozen = registryAccess.getAccessForLoading(registryLayer);
-            return RegistryDataLoader.load(resourceManager, frozen, registryData);
-        }
-
     }
 }

src/api/java/baritone/api/utils/IPlayerContext.java

@@ -99,6 +99,14 @@ public interface IPlayerContext {
         return new Rotation(player().getYRot(), player().getXRot());
     }
 
+    /**
+     * Returns the player's eye height, taking into account whether or not the player is sneaking.
+     *
+     * @param ifSneaking Whether or not the player is sneaking
+     * @return The player's eye height
+     * @deprecated Use entity.getEyeHeight(Pose.CROUCHING) instead
+     */
+    @Deprecated
     static double eyeHeight(boolean ifSneaking) {
         return ifSneaking ? 1.27 : 1.62;
     }

src/api/java/baritone/api/utils/RayTraceUtils.java

@@ -18,6 +18,7 @@
 package baritone.api.utils;
 
 import net.minecraft.world.entity.Entity;
+import net.minecraft.world.entity.Pose;
 import net.minecraft.world.level.ClipContext;
 import net.minecraft.world.phys.HitResult;
 import net.minecraft.world.phys.Vec3;
@@ -62,6 +63,6 @@ public final class RayTraceUtils {
     }
 
     public static Vec3 inferSneakingEyePosition(Entity entity) {
-        return new Vec3(entity.getX(), entity.getY() + IPlayerContext.eyeHeight(true), entity.getZ());
+        return new Vec3(entity.getX(), entity.getY() + entity.getEyeHeight(Pose.CROUCHING), entity.getZ());
     }
 }

src/api/java/baritone/api/utils/SettingsUtil.java

@@ -21,12 +21,16 @@ import baritone.api.BaritoneAPI;
 import baritone.api.Settings;
 import net.minecraft.client.Minecraft;
 import net.minecraft.core.Direction;
+import net.minecraft.core.Holder;
 import net.minecraft.core.Registry;
 import net.minecraft.core.Vec3i;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Mirror;
+import net.minecraft.world.level.block.Rotation;
+
 import java.awt.*;
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
@@ -80,6 +84,10 @@ public class SettingsUtil {
 
                 String settingName = matcher.group("setting").toLowerCase();
                 String settingValue = matcher.group("value");
+                // TODO remove soonish
+                if ("allowjumpat256".equals(settingName)) {
+                    settingName = "allowjumpatbuildlimit";
+                }
                 try {
                     parseAndApply(settings, settingName, settingValue);
                 } catch (Exception ex) {
@@ -220,7 +228,8 @@ public class SettingsUtil {
         FLOAT(Float.class, Float::parseFloat),
         LONG(Long.class, Long::parseLong),
         STRING(String.class, String::new),
-        DIRECTION(Direction.class, Direction::byName),
+        MIRROR(Mirror.class, Mirror::valueOf, Mirror::name),
+        ROTATION(Rotation.class, Rotation::valueOf, Rotation::name),
         COLOR(
                 Color.class,
                 str -> new Color(Integer.parseInt(str.split(",")[0]), Integer.parseInt(str.split(",")[1]), Integer.parseInt(str.split(",")[2])),
@@ -237,8 +246,8 @@ public class SettingsUtil {
                 BlockUtils::blockToString
         ),
         ITEM(
-                Item.class,
-                str -> BuiltInRegistries.ITEM.get(ResourceLocation.parse(str.trim())), // TODO this now returns AIR on failure instead of null, is that an issue?
+            Item.class,
+                str -> BuiltInRegistries.ITEM.get(ResourceLocation.parse(str.trim())).map(Holder.Reference::value).orElse(null),
                 item -> BuiltInRegistries.ITEM.getKey(item).toString()
         ),
         LIST() {

src/api/java/baritone/api/utils/gui/BaritoneToast.java

@@ -17,65 +17,13 @@
 
 package baritone.api.utils.gui;
 
-import com.mojang.blaze3d.platform.GlStateManager;
-import com.mojang.blaze3d.vertex.PoseStack;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.gui.GuiGraphics;
-import net.minecraft.client.gui.components.toasts.Toast;
-import net.minecraft.client.gui.components.toasts.ToastComponent;
+import net.minecraft.client.gui.components.toasts.SystemToast;
 import net.minecraft.network.chat.Component;
-import net.minecraft.resources.ResourceLocation;
-
-public class BaritoneToast implements Toast {
-    private String title;
-    private String subtitle;
-    private long firstDrawTime;
-    private boolean newDisplay;
-    private long totalShowTime;
-
-    public BaritoneToast(Component titleComponent, Component subtitleComponent, long totalShowTime) {
-        this.title = titleComponent.getString();
-        this.subtitle = subtitleComponent == null ? null : subtitleComponent.getString();
-        this.totalShowTime = totalShowTime;
-    }
-
-    public Visibility render(GuiGraphics gui, ToastComponent toastGui, long delta) {
-        if (this.newDisplay) {
-            this.firstDrawTime = delta;
-            this.newDisplay = false;
-        }
-
-
-        //TODO: check
-        gui.blit(ResourceLocation.parse("textures/gui/toasts.png"), 0, 0, 0, 32, 160, 32);
-
-        if (this.subtitle == null) {
-            gui.drawString(toastGui.getMinecraft().font, this.title, 18, 12, -11534256);
-        } else {
-            gui.drawString(toastGui.getMinecraft().font, this.title, 18, 7, -11534256);
-            gui.drawString(toastGui.getMinecraft().font, this.subtitle, 18, 18, -16777216);
-        }
-
-        return delta - this.firstDrawTime < totalShowTime ? Visibility.SHOW : Visibility.HIDE;
-    }
-
-    public void setDisplayedText(Component titleComponent, Component subtitleComponent) {
-        this.title = titleComponent.getString();
-        this.subtitle = subtitleComponent == null ? null : subtitleComponent.getString();
-        this.newDisplay = true;
-    }
-
-    public static void addOrUpdate(ToastComponent toast, Component title, Component subtitle, long totalShowTime) {
-        BaritoneToast baritonetoast = toast.getToast(BaritoneToast.class, new Object());
-
-        if (baritonetoast == null) {
-            toast.addToast(new BaritoneToast(title, subtitle, totalShowTime));
-        } else {
-            baritonetoast.setDisplayedText(title, subtitle);
-        }
-    }
 
+public class BaritoneToast {
+    private static final SystemToast.SystemToastId BARITONE_TOAST_ID = new SystemToast.SystemToastId(5000L);
     public static void addOrUpdate(Component title, Component subtitle) {
-        addOrUpdate(Minecraft.getInstance().getToasts(), title, subtitle, baritone.api.BaritoneAPI.getSettings().toastTimer.value);
+        SystemToast.addOrUpdate(Minecraft.getInstance().getToastManager(), BARITONE_TOAST_ID, title, subtitle);
     }
 }

src/launch/java/baritone/launch/mixins/MixinLivingEntity.java

@@ -32,6 +32,7 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.Redirect;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 import java.util.Optional;
 
@@ -81,13 +82,13 @@ public abstract class MixinLivingEntity extends Entity {
     }
 
     @Inject(
-            method = "travel",
+            method = "updateFallFlyingMovement",
             at = @At(
                     value = "INVOKE",
                     target = "net/minecraft/world/entity/LivingEntity.getLookAngle()Lnet/minecraft/world/phys/Vec3;"
             )
     )
-    private void onPreElytraMove(Vec3 direction, CallbackInfo ci) {
+    private void onPreElytraMove(Vec3 direction, final CallbackInfoReturnable<Vec3> cir) {
         this.getBaritone().ifPresent(baritone -> {
             this.elytraRotationEvent = new RotationMoveEvent(RotationMoveEvent.Type.MOTION_UPDATE, this.getYRot(), this.getXRot());
             baritone.getGameEventHandler().onPlayerRotationMove(this.elytraRotationEvent);
@@ -97,14 +98,14 @@ public abstract class MixinLivingEntity extends Entity {
     }
 
     @Inject(
-            method = "travel",
+            method = "travelFallFlying",
             at = @At(
                     value = "INVOKE",
                     target = "net/minecraft/world/entity/LivingEntity.move(Lnet/minecraft/world/entity/MoverType;Lnet/minecraft/world/phys/Vec3;)V",
                     shift = At.Shift.AFTER
             )
     )
-    private void onPostElytraMove(Vec3 direction, CallbackInfo ci) {
+    private void onPostElytraMove(final CallbackInfo ci) {
         if (this.elytraRotationEvent != null) {
             this.setYRot(this.elytraRotationEvent.getOriginal().getYaw());
             this.setXRot(this.elytraRotationEvent.getOriginal().getPitch());

src/launch/java/baritone/launch/mixins/MixinScreen.java

@@ -21,17 +21,19 @@ import baritone.api.BaritoneAPI;
 import baritone.api.IBaritone;
 import baritone.api.event.events.ChatEvent;
 import baritone.utils.accessor.IGuiScreen;
+import net.minecraft.client.gui.screens.Screen;
 import net.minecraft.network.chat.ClickEvent;
 import net.minecraft.network.chat.Style;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.gen.Invoker;
-
-import java.net.URI;
-import net.minecraft.client.gui.screens.Screen;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
+import java.net.URI;
+
+import static baritone.api.command.IBaritoneChatControl.FORCE_COMMAND_PREFIX;
+
 @Mixin(Screen.class)
 public abstract class MixinScreen implements IGuiScreen {
 
@@ -42,9 +44,13 @@ public abstract class MixinScreen implements IGuiScreen {
         if (clickEvent == null) {
             return;
         }
+        String command = clickEvent.getValue();
+        if (command == null || !command.startsWith(FORCE_COMMAND_PREFIX)) {
+            return;
+        }
         IBaritone baritone = BaritoneAPI.getProvider().getPrimaryBaritone();
         if (baritone != null) {
-            baritone.getGameEventHandler().onSendChatMessage(new ChatEvent(clickEvent.getValue()));
+            baritone.getGameEventHandler().onSendChatMessage(new ChatEvent(command));
         }
         cir.setReturnValue(true);
         cir.cancel();

src/launch/java/baritone/launch/mixins/MixinWorldRenderer.java

@@ -20,6 +20,7 @@ package baritone.launch.mixins;
 import baritone.api.BaritoneAPI;
 import baritone.api.IBaritone;
 import baritone.api.event.events.RenderEvent;
+import com.mojang.blaze3d.resource.GraphicsResourceAllocator;
 import com.mojang.blaze3d.vertex.PoseStack;
 import net.minecraft.client.Camera;
 import net.minecraft.client.DeltaTracker;
@@ -44,7 +45,7 @@ public class MixinWorldRenderer {
             method = "renderLevel",
             at = @At("RETURN")
     )
-    private void onStartHand(final DeltaTracker deltaTracker, final boolean bl, final Camera camera, final GameRenderer gameRenderer, final LightTexture lightTexture, final Matrix4f matrix4f, final Matrix4f matrix4f2, final CallbackInfo ci) {
+    private void onStartHand(final GraphicsResourceAllocator graphicsResourceAllocator, final DeltaTracker deltaTracker, final boolean bl, final Camera camera, final GameRenderer gameRenderer, final LightTexture lightTexture, final Matrix4f matrix4f, final Matrix4f matrix4f2, final CallbackInfo ci) {
         for (IBaritone ibaritone : BaritoneAPI.getProvider().getAllBaritones()) {
             PoseStack poseStack = new PoseStack();
             poseStack.mulPose(matrix4f);

src/main/java/baritone/behavior/PathingBehavior.java

@@ -265,7 +265,7 @@ public final class PathingBehavior extends Behavior implements IPathingBehavior,
         if (goal == null) {
             return false;
         }
-        if (goal.isInGoal(ctx.playerFeet()) || goal.isInGoal(expectedSegmentStart)) {
+        if (goal.isInGoal(ctx.playerFeet())) {
             return false;
         }
         synchronized (pathPlanLock) {
@@ -553,7 +553,7 @@ public final class PathingBehavior extends Behavior implements IPathingBehavior,
         });
     }
 
-    private static AbstractNodeCostSearch createPathfinder(BlockPos start, Goal goal, IPath previous, CalculationContext context) {
+    private AbstractNodeCostSearch createPathfinder(BlockPos start, Goal goal, IPath previous, CalculationContext context) {
         Goal transformed = goal;
         if (Baritone.settings().simplifyUnloadedYCoord.value && goal instanceof IGoalRenderPos) {
             BlockPos pos = ((IGoalRenderPos) goal).getGoalPos();
@@ -562,7 +562,14 @@ public final class PathingBehavior extends Behavior implements IPathingBehavior,
             }
         }
         Favoring favoring = new Favoring(context.getBaritone().getPlayerContext(), previous, context);
-        return new AStarPathFinder(start.getX(), start.getY(), start.getZ(), transformed, favoring, context);
+        BetterBlockPos feet = ctx.playerFeet();
+        var realStart = new BetterBlockPos(start);
+        var sub = feet.subtract(realStart);
+        if (feet.getY() == realStart.getY() && Math.abs(sub.getX()) <= 1 && Math.abs(sub.getZ()) <= 1) {
+            realStart = feet;
+        }
+        return new AStarPathFinder(realStart, start.getX(), start.getY(), start.getZ(), transformed, favoring, context);
+
     }
 
     @Override

src/main/java/baritone/cache/ChunkPacker.java

@@ -84,7 +84,7 @@ public final class ChunkPacker {
                             Block block = state.getBlock();
                             if (CachedChunk.BLOCKS_TO_KEEP_TRACK_OF.contains(block)) {
                                 String name = BlockUtils.blockToString(block);
-                                specialBlocks.computeIfAbsent(name, b -> new ArrayList<>()).add(new BlockPos(x, y+chunk.getMinBuildHeight(), z));
+                                specialBlocks.computeIfAbsent(name, b -> new ArrayList<>()).add(new BlockPos(x, y+chunk.getMinY(), z));
                             }
                         }
                     }

src/main/java/baritone/cache/FasterWorldScanner.java

@@ -156,7 +156,7 @@ public enum FasterWorldScanner implements IWorldScanner {
         long chunkX = (long) pos.x << 4;
         long chunkZ = (long) pos.z << 4;
 
-        int playerSectionY = (ctx.playerFeet().y - ctx.world().getMinBuildHeight()) >> 4;
+        int playerSectionY = (ctx.playerFeet().y - ctx.world().getMinY()) >> 4;
 
         return collectChunkSections(lookup, chunkProvider.getChunk(pos.x, pos.z, false), chunkX, chunkZ, playerSectionY).stream();
     }
@@ -165,7 +165,7 @@ public enum FasterWorldScanner implements IWorldScanner {
     private List<BlockPos> collectChunkSections(BlockOptionalMetaLookup lookup, LevelChunk chunk, long chunkX, long chunkZ, int playerSection) {
         // iterate over sections relative to player
         List<BlockPos> blocks = new ArrayList<>();
-        int chunkY = chunk.getMinBuildHeight();
+        int chunkY = chunk.getMinY();
         LevelChunkSection[] sections = chunk.getSections();
         int l = sections.length;
         int i = playerSection - 1;

src/main/java/baritone/command/defaults/BuildCommand.java

@@ -26,11 +26,13 @@ import baritone.api.command.datatypes.RelativeFile;
 import baritone.api.command.exception.CommandException;
 import baritone.api.command.exception.CommandInvalidStateException;
 import baritone.api.utils.BetterBlockPos;
+import baritone.utils.schematic.SchematicSystem;
 import org.apache.commons.io.FilenameUtils;
 
 import java.io.File;
 import java.util.Arrays;
 import java.util.List;
+import java.util.StringJoiner;
 import java.util.stream.Stream;
 
 public class BuildCommand extends Command {
@@ -44,10 +46,29 @@ public class BuildCommand extends Command {
 
     @Override
     public void execute(String label, IArgConsumer args) throws CommandException {
-        File file = args.getDatatypePost(RelativeFile.INSTANCE, schematicsDir).getAbsoluteFile();
+        final File file0 = args.getDatatypePost(RelativeFile.INSTANCE, schematicsDir).getAbsoluteFile();
+        File file = file0;
         if (FilenameUtils.getExtension(file.getAbsolutePath()).isEmpty()) {
             file = new File(file.getAbsolutePath() + "." + Baritone.settings().schematicFallbackExtension.value);
         }
+        if (!file.exists()) {
+            if (file0.exists()) {
+                throw new CommandInvalidStateException(String.format(
+                        "Cannot load %s because I do not know which schematic format"
+                                + " that is. Please rename the file to include the correct"
+                                + " file extension.",
+                        file));
+            }
+            throw new CommandInvalidStateException("Cannot find " + file);
+        }
+        if (!SchematicSystem.INSTANCE.getByFile(file).isPresent()) {
+            StringJoiner formats = new StringJoiner(", ");
+            SchematicSystem.INSTANCE.getFileExtensions().forEach(formats::add);
+            throw new CommandInvalidStateException(String.format(
+                    "Unsupported schematic format. Reckognized file extensions are: %s",
+                    formats
+            ));
+        }
         BetterBlockPos origin = ctx.playerFeet();
         BetterBlockPos buildOrigin;
         if (args.hasAny()) {
@@ -59,7 +80,7 @@ public class BuildCommand extends Command {
         }
         boolean success = baritone.getBuilderProcess().build(file.getName(), file, buildOrigin);
         if (!success) {
-            throw new CommandInvalidStateException("Couldn't load the schematic. Make sure to use the FULL file name, including the extension (e.g. blah.schematic).");
+            throw new CommandInvalidStateException("Couldn't load the schematic. Either your schematic is corrupt or this is a bug.");
         }
         logDirect(String.format("Successfully loaded schematic for building\nOrigin: %s", buildOrigin));
     }

src/main/java/baritone/command/defaults/DefaultCommands.java

@@ -53,6 +53,7 @@ public final class DefaultCommands {
                 new RenderCommand(baritone),
                 new FarmCommand(baritone),
                 new FollowCommand(baritone),
+                new PickupCommand(baritone),
                 new ExploreFilterCommand(baritone),
                 new ReloadAllCommand(baritone),
                 new SaveAllCommand(baritone),

src/main/java/baritone/command/defaults/ElytraCommand.java

@@ -216,7 +216,7 @@ public class ElytraCommand extends Command {
         final String osArch = System.getProperty("os.arch");
         final String osName = System.getProperty("os.name");
         return String.format(
-                "Legacy architectures are not supported. Your CPU is %s and your operating system is %s. " +
+                "Failed loading native library. Your CPU is %s and your operating system is %s. " +
                         "Supported architectures are 64 bit x86, and 64 bit ARM. Supported operating systems are Windows, " +
                         "Linux, and Mac",
                 osArch, osName

src/main/java/baritone/command/defaults/LitematicaCommand.java

@@ -34,18 +34,9 @@ public class LitematicaCommand extends Command {
 
     @Override
     public void execute(String label, IArgConsumer args) throws CommandException {
-        int schematic = 0;
-        if (args.hasAny()) {
-            args.requireMax(1);
-            if (args.is(Integer.class)) {
-                schematic = args.getAs(Integer.class) - 1;
-            }
-        }
-        try {
-            baritone.getBuilderProcess().buildOpenLitematic(schematic);
-        } catch (IndexOutOfBoundsException e) {
-            logDirect("Pleas provide a valid index.");
-        }
+        args.requireMax(1);
+        int schematic = args.hasAny() ? args.getAs(Integer.class) - 1 : 0;
+        baritone.getBuilderProcess().buildOpenLitematic(schematic);
     }
 
     @Override

src/main/java/baritone/command/defaults/PickupCommand.java

@@ -0,0 +1,82 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package baritone.command.defaults;
+
+import baritone.api.IBaritone;
+import baritone.api.command.Command;
+import baritone.api.command.argument.IArgConsumer;
+import baritone.api.command.datatypes.ItemById;
+import baritone.api.command.exception.CommandException;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.Item;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Stream;
+
+public class PickupCommand extends Command {
+
+    public PickupCommand(IBaritone baritone) {
+        super(baritone, "pickup");
+    }
+
+    @Override
+    public void execute(String label, IArgConsumer args) throws CommandException {
+        Set<Item> collecting = new HashSet<>();
+        while (args.hasAny()) {
+            Item item = args.getDatatypeFor(ItemById.INSTANCE);
+            collecting.add(item);
+        }
+        if (collecting.isEmpty()) {
+            baritone.getFollowProcess().pickup(stack -> true);
+            logDirect("Picking up all items");
+        } else {
+            baritone.getFollowProcess().pickup(stack -> collecting.contains(stack.getItem()));
+            logDirect("Picking up these items:");
+            collecting.stream().map(BuiltInRegistries.ITEM::getKey).map(ResourceLocation::toString).forEach(this::logDirect);
+        }
+    }
+
+    @Override
+    public Stream<String> tabComplete(String label, IArgConsumer args) throws CommandException {
+        while (args.has(2)) {
+            if (args.peekDatatypeOrNull(ItemById.INSTANCE) == null) {
+                return Stream.empty();
+            }
+            args.get();
+        }
+        return args.tabCompleteDatatype(ItemById.INSTANCE);
+    }
+
+    @Override
+    public String getShortDesc() {
+        return "Pickup items";
+    }
+
+    @Override
+    public List<String> getLongDesc() {
+        return Arrays.asList(
+                "Usage:",
+                "> pickup - Pickup anything",
+                "> pickup <item1> <item2> <...> - Pickup certain items"
+        );
+    }
+}

src/main/java/baritone/command/defaults/RenderCommand.java

@@ -40,10 +40,10 @@ public class RenderCommand extends Command {
         int renderDistance = (ctx.minecraft().options.renderDistance().get() + 1) * 16;
         ctx.minecraft().levelRenderer.setBlocksDirty(
                 origin.x - renderDistance,
-                0,
+                ctx.world().getMinY(),
                 origin.z - renderDistance,
                 origin.x + renderDistance,
-                255,
+                ctx.world().getMaxY(),
                 origin.z + renderDistance
         );
         logDirect("Done");

src/main/java/baritone/command/defaults/SelCommand.java

@@ -228,12 +228,7 @@ public class SelCommand extends Command {
                         }
                     }
                 }
-                ISchematic schematic = new StaticSchematic() {{
-                    states = blockstates;
-                    x = size.getX();
-                    y = size.getY();
-                    z = size.getZ();
-                }};
+                ISchematic schematic = new StaticSchematic(blockstates);
                 composite.put(schematic, min.x - origin.x, min.y - origin.y, min.z - origin.z);
             }
             clipboard = composite;

src/main/java/baritone/command/defaults/TunnelCommand.java

@@ -44,7 +44,7 @@ public class TunnelCommand extends Command {
             int width = Integer.parseInt(args.getArgs().get(1).getValue());
             int depth = Integer.parseInt(args.getArgs().get(2).getValue());
 
-            if (width < 1 || height < 2 || depth < 1 || height > 255) {
+            if (width < 1 || height < 2 || depth < 1 || height > ctx.world().getMaxY()){
                 logDirect("Width and depth must at least be 1 block; Height must at least be 2 blocks, and cannot be greater than the build limit.");
                 cont = false;
             }

src/main/java/baritone/pathing/calc/AStarPathFinder.java

@@ -22,6 +22,7 @@ import baritone.api.pathing.calc.IPath;
 import baritone.api.pathing.goals.Goal;
 import baritone.api.pathing.movement.ActionCosts;
 import baritone.api.utils.BetterBlockPos;
+import baritone.api.utils.SettingsUtil;
 import baritone.pathing.calc.openset.BinaryHeapOpenSet;
 import baritone.pathing.movement.CalculationContext;
 import baritone.pathing.movement.Moves;
@@ -41,8 +42,8 @@ public final class AStarPathFinder extends AbstractNodeCostSearch {
     private final Favoring favoring;
     private final CalculationContext calcContext;
 
-    public AStarPathFinder(int startX, int startY, int startZ, Goal goal, Favoring favoring, CalculationContext context) {
-        super(startX, startY, startZ, goal, context);
+    public AStarPathFinder(BetterBlockPos realStart, int startX, int startY, int startZ, Goal goal, Favoring favoring, CalculationContext context) {
+        super(realStart, startX, startY, startZ, goal, context);
         this.favoring = favoring;
         this.calcContext = context;
     }
@@ -96,7 +97,7 @@ public final class AStarPathFinder extends AbstractNodeCostSearch {
             numNodes++;
             if (goal.isInGoal(currentNode.x, currentNode.y, currentNode.z)) {
                 logDebug("Took " + (System.currentTimeMillis() - startTime) + "ms, " + numMovementsConsidered + " movements considered");
-                return Optional.of(new Path(startNode, currentNode, numNodes, goal, calcContext));
+                return Optional.of(new Path(realStart, startNode, currentNode, numNodes, goal, calcContext));
             }
             for (Moves moves : allMoves) {
                 int newX = currentNode.x + moves.xOffset;
@@ -122,17 +123,39 @@ public final class AStarPathFinder extends AbstractNodeCostSearch {
                     continue;
                 }
                 if (actionCost <= 0 || Double.isNaN(actionCost)) {
-                    throw new IllegalStateException(moves + " calculated implausible cost " + actionCost);
+                    throw new IllegalStateException(String.format(
+                            "%s from %s %s %s calculated implausible cost %s",
+                            moves,
+                            SettingsUtil.maybeCensor(currentNode.x),
+                            SettingsUtil.maybeCensor(currentNode.y),
+                            SettingsUtil.maybeCensor(currentNode.z),
+                            actionCost));
                 }
-                // check destination after verifying it's not COST_INF -- some movements return a static IMPOSSIBLE object with COST_INF and destination being 0,0,0 to avoid allocating a new result for every failed calculation
+                // check destination after verifying it's not COST_INF -- some movements return COST_INF without adjusting the destination
                 if (moves.dynamicXZ && !worldBorder.entirelyContains(res.x, res.z)) { // see issue #218
                     continue;
                 }
                 if (!moves.dynamicXZ && (res.x != newX || res.z != newZ)) {
-                    throw new IllegalStateException(moves + " " + res.x + " " + newX + " " + res.z + " " + newZ);
+                    throw new IllegalStateException(String.format(
+                            "%s from %s %s %s ended at x z %s %s instead of %s %s",
+                            moves,
+                            SettingsUtil.maybeCensor(currentNode.x),
+                            SettingsUtil.maybeCensor(currentNode.y),
+                            SettingsUtil.maybeCensor(currentNode.z),
+                            SettingsUtil.maybeCensor(res.x),
+                            SettingsUtil.maybeCensor(res.z),
+                            SettingsUtil.maybeCensor(newX),
+                            SettingsUtil.maybeCensor(newZ)));
                 }
                 if (!moves.dynamicY && res.y != currentNode.y + moves.yOffset) {
-                    throw new IllegalStateException(moves + " " + res.y + " " + (currentNode.y + moves.yOffset));
+                    throw new IllegalStateException(String.format(
+                            "%s from %s %s %s ended at y %s instead of %s",
+                            moves,
+                            SettingsUtil.maybeCensor(currentNode.x),
+                            SettingsUtil.maybeCensor(currentNode.y),
+                            SettingsUtil.maybeCensor(currentNode.z),
+                            SettingsUtil.maybeCensor(res.y),
+                            SettingsUtil.maybeCensor(currentNode.y + moves.yOffset)));
                 }
                 long hashCode = BetterBlockPos.longHash(res.x, res.y, res.z);
                 if (isFavoring) {

src/main/java/baritone/pathing/calc/AbstractNodeCostSearch.java

@@ -36,6 +36,7 @@ import java.util.Optional;
  */
 public abstract class AbstractNodeCostSearch implements IPathFinder, Helper {
 
+    protected final BetterBlockPos realStart;
     protected final int startX;
     protected final int startY;
     protected final int startZ;
@@ -81,7 +82,8 @@ public abstract class AbstractNodeCostSearch implements IPathFinder, Helper {
      */
     protected static final double MIN_IMPROVEMENT = 0.01;
 
-    AbstractNodeCostSearch(int startX, int startY, int startZ, Goal goal, CalculationContext context) {
+    AbstractNodeCostSearch(BetterBlockPos realStart, int startX, int startY, int startZ, Goal goal, CalculationContext context) {
+        this.realStart = realStart;
         this.startX = startX;
         this.startY = startY;
         this.startZ = startZ;
@@ -177,7 +179,7 @@ public abstract class AbstractNodeCostSearch implements IPathFinder, Helper {
 
     @Override
     public Optional<IPath> pathToMostRecentNodeConsidered() {
-        return Optional.ofNullable(mostRecentConsidered).map(node -> new Path(startNode, node, 0, goal, context));
+        return Optional.ofNullable(mostRecentConsidered).map(node -> new Path(realStart, startNode, node, 0, goal, context));
     }
 
     @Override
@@ -208,7 +210,7 @@ public abstract class AbstractNodeCostSearch implements IPathFinder, Helper {
                     System.out.println("Path goes for " + Math.sqrt(dist) + " blocks");
                     logDebug("A* cost coefficient " + COEFFICIENTS[i]);
                 }
-                return Optional.of(new Path(startNode, bestSoFar[i], numNodes, goal, context));
+                return Optional.of(new Path(realStart, startNode, bestSoFar[i], numNodes, goal, context));
             }
         }
         // instead of returning bestSoFar[0], be less misleading

src/main/java/baritone/pathing/calc/Path.java

@@ -27,6 +27,7 @@ import baritone.pathing.movement.Movement;
 import baritone.pathing.movement.Moves;
 import baritone.pathing.path.CutoffPath;
 import baritone.utils.pathing.PathBase;
+import com.google.common.collect.Lists;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -68,28 +69,40 @@ class Path extends PathBase {
 
     private volatile boolean verified;
 
-    Path(PathNode start, PathNode end, int numNodes, Goal goal, CalculationContext context) {
-        this.start = new BetterBlockPos(start.x, start.y, start.z);
+    Path(BetterBlockPos realStart, PathNode start, PathNode end, int numNodes, Goal goal, CalculationContext context) {
         this.end = new BetterBlockPos(end.x, end.y, end.z);
         this.numNodes = numNodes;
         this.movements = new ArrayList<>();
         this.goal = goal;
         this.context = context;
+
         PathNode current = end;
-        LinkedList<BetterBlockPos> tempPath = new LinkedList<>();
-        LinkedList<PathNode> tempNodes = new LinkedList<>();
-        // Repeatedly inserting to the beginning of an arraylist is O(n^2)
-        // Instead, do it into a linked list, then convert at the end
+        List<BetterBlockPos> tempPath = new ArrayList<>();
+        List<PathNode> tempNodes = new ArrayList<>();
         while (current != null) {
-            tempNodes.addFirst(current);
-            tempPath.addFirst(new BetterBlockPos(current.x, current.y, current.z));
+            tempNodes.add(current);
+            tempPath.add(new BetterBlockPos(current.x, current.y, current.z));
             current = current.previous;
         }
-        // Can't directly convert from the PathNode pseudo linked list to an array because we don't know how long it is
-        // inserting into a LinkedList<E> keeps track of length, then when we addall (which calls .toArray) it's able
-        // to performantly do that conversion since it knows the length.
-        this.path = new ArrayList<>(tempPath);
-        this.nodes = new ArrayList<>(tempNodes);
+
+        // If the position the player is at is different from the position we told A* to start from,
+        // and A* gave us no movements, then add a fake node that will allow a movement to be created
+        // that gets us to the single position in the path.
+        // See PathingBehavior#createPathfinder and https://github.com/cabaletta/baritone/pull/4519
+        var startNodePos = new BetterBlockPos(start.x, start.y, start.z);
+        if (!realStart.equals(startNodePos) && start.equals(end)) {
+            this.start = realStart;
+            PathNode fakeNode = new PathNode(realStart.x, realStart.y, realStart.z, goal);
+            fakeNode.cost = 0;
+            tempNodes.add(fakeNode);
+            tempPath.add(realStart);
+        } else {
+            this.start = startNodePos;
+        }
+
+        // Nodes are traversed last to first so we need to reverse the list
+        this.path = Lists.reverse(tempPath);
+        this.nodes = Lists.reverse(tempNodes);
     }
 
     @Override
@@ -99,7 +112,7 @@ class Path extends PathBase {
 
     private boolean assembleMovements() {
         if (path.isEmpty() || !movements.isEmpty()) {
-            throw new IllegalStateException();
+            throw new IllegalStateException("Path must not be empty");
         }
         for (int i = 0; i < path.size() - 1; i++) {
             double cost = nodes.get(i + 1).cost - nodes.get(i).cost;
@@ -132,7 +145,7 @@ class Path extends PathBase {
     @Override
     public IPath postProcess() {
         if (verified) {
-            throw new IllegalStateException();
+            throw new IllegalStateException("Path must not be verified twice");
         }
         verified = true;
         boolean failed = assembleMovements();
@@ -141,7 +154,7 @@ class Path extends PathBase {
         if (failed) { // at least one movement became impossible during calculation
             CutoffPath res = new CutoffPath(this, movements().size());
             if (res.movements().size() != movements.size()) {
-                throw new IllegalStateException();
+                throw new IllegalStateException("Path has wrong size after cutoff");
             }
             return res;
         }
@@ -153,7 +166,8 @@ class Path extends PathBase {
     @Override
     public List<IMovement> movements() {
         if (!verified) {
-            throw new IllegalStateException();
+            // edge case note: this is called during verification
+            throw new IllegalStateException("Path not yet verified");
         }
         return Collections.unmodifiableList(movements);
     }

src/main/java/baritone/pathing/calc/PathNode.java

@@ -20,6 +20,7 @@ package baritone.pathing.calc;
 import baritone.api.pathing.goals.Goal;
 import baritone.api.pathing.movement.ActionCosts;
 import baritone.api.utils.BetterBlockPos;
+import baritone.api.utils.SettingsUtil;
 
 /**
  * A node in the path, containing the cost and steps to get to it.
@@ -68,7 +69,12 @@ public final class PathNode {
         this.cost = ActionCosts.COST_INF;
         this.estimatedCostToGoal = goal.heuristic(x, y, z);
         if (Double.isNaN(estimatedCostToGoal)) {
-            throw new IllegalStateException(goal + " calculated implausible heuristic");
+            throw new IllegalStateException(String.format(
+                    "%s calculated implausible heuristic NaN at %s %s %s",
+                    goal,
+                    SettingsUtil.maybeCensor(x),
+                    SettingsUtil.maybeCensor(y),
+                    SettingsUtil.maybeCensor(z)));
         }
         this.heapPosition = -1;
         this.x = x;

src/main/java/baritone/pathing/calc/openset/BinaryHeapOpenSet.java

@@ -92,7 +92,7 @@ public final class BinaryHeapOpenSet implements IOpenSet {
     @Override
     public final PathNode removeLowest() {
         if (size == 0) {
-            throw new IllegalStateException();
+            throw new IllegalStateException("Cannot remove from empty heap");
         }
         PathNode result = array[1];
         PathNode val = array[size];

src/main/java/baritone/pathing/movement/CalculationContext.java

@@ -66,7 +66,7 @@ public class CalculationContext {
     public final List<Block> allowBreakAnyway;
     public final boolean allowParkour;
     public final boolean allowParkourPlace;
-    public final boolean allowJumpAt256;
+    public final boolean allowJumpAtBuildLimit;
     public final boolean allowParkourAscend;
     public final boolean assumeWalkOnWater;
     public boolean allowFallIntoLava;
@@ -107,7 +107,7 @@ public class CalculationContext {
         this.allowBreakAnyway = new ArrayList<>(Baritone.settings().allowBreakAnyway.value);
         this.allowParkour = Baritone.settings().allowParkour.value;
         this.allowParkourPlace = Baritone.settings().allowParkourPlace.value;
-        this.allowJumpAt256 = Baritone.settings().allowJumpAt256.value;
+        this.allowJumpAtBuildLimit = Baritone.settings().allowJumpAtBuildLimit.value;
         this.allowParkourAscend = Baritone.settings().allowParkourAscend.value;
         this.assumeWalkOnWater = Baritone.settings().assumeWalkOnWater.value;
         this.allowFallIntoLava = false; // Super secret internal setting for ElytraBehavior
@@ -189,6 +189,12 @@ public class CalculationContext {
         if (!worldBorder.canPlaceAt(x, z)) {
             return COST_INF;
         }
+        if (!Baritone.settings().allowPlaceInFluidsSource.value && current.getFluidState().isSource()) {
+            return COST_INF;
+        }
+        if (!Baritone.settings().allowPlaceInFluidsFlow.value && !current.getFluidState().isEmpty() && !current.getFluidState().isSource()) {
+            return COST_INF;
+        }
         return placeBlockCost;
     }
 

src/main/java/baritone/pathing/movement/MovementHelper.java

@@ -421,7 +421,7 @@ public interface MovementHelper extends ActionCosts, Helper {
         if (block == Blocks.LADDER || (block == Blocks.VINE && Baritone.settings().allowVines.value)) { // TODO reconsider this
             return YES;
         }
-        if (block == Blocks.FARMLAND || block == Blocks.DIRT_PATH) {
+        if (block == Blocks.FARMLAND || block == Blocks.DIRT_PATH || block == Blocks.SOUL_SAND) {
             return YES;
         }
         if (block == Blocks.ENDER_CHEST || block == Blocks.CHEST || block == Blocks.TRAPPED_CHEST) {

src/main/java/baritone/pathing/movement/Moves.java

@@ -347,7 +347,7 @@ public enum Moves {
 
     public void apply(CalculationContext context, int x, int y, int z, MutableMoveResult result) {
         if (dynamicXZ || dynamicY) {
-            throw new UnsupportedOperationException();
+            throw new UnsupportedOperationException("Movements with dynamic offset must override `apply`");
         }
         result.x = x + xOffset;
         result.y = y + yOffset;
@@ -356,6 +356,6 @@ public enum Moves {
     }
 
     public double cost(CalculationContext context, int x, int y, int z) {
-        throw new UnsupportedOperationException();
+        throw new UnsupportedOperationException("Movements must override `cost` or `apply`");
     }
 }

src/main/java/baritone/pathing/movement/movements/MovementDescend.java

@@ -147,9 +147,9 @@ public class MovementDescend extends Movement {
         int effectiveStartHeight = y;
         for (int fallHeight = 3; true; fallHeight++) {
             int newY = y - fallHeight;
-            if (newY < 0) {
+            if (newY < context.world.getMinY()) {
                 // when pathing in the end, where you could plausibly fall into the void
-                // this check prevents it from getting the block at y=-1 and crashing
+                // this check prevents it from getting the block at y=(below whatever the minimum height is) and crashing
                 return false;
             }
             boolean reachedMinimum = fallHeight >= context.minFallHeight;

src/main/java/baritone/pathing/movement/movements/MovementFall.java

@@ -140,7 +140,7 @@ public class MovementFall extends Movement {
             }
             state.setInput(Input.MOVE_FORWARD, true);
         }
-        Vec3i avoid = Optional.ofNullable(avoid()).map(Direction::getNormal).orElse(null);
+        Vec3i avoid = Optional.ofNullable(avoid()).map(Direction::getUnitVec3i).orElse(null);
         if (avoid == null) {
             avoid = src.subtract(dest);
         } else {

src/main/java/baritone/pathing/movement/movements/MovementParkour.java

@@ -64,10 +64,9 @@ public class MovementParkour extends Movement {
         if (!context.allowParkour) {
             return;
         }
-        if (y == 256 && !context.allowJumpAt256) {
+        if (!context.allowJumpAtBuildLimit && y >= context.world.getMaxY()) {
             return;
         }
-
         int xDiff = dir.getStepX();
         int zDiff = dir.getStepZ();
         if (!MovementHelper.fullyPassable(context, x + xDiff, y, z + zDiff)) {

src/main/java/baritone/pathing/path/PathExecutor.java

@@ -455,7 +455,9 @@ public class PathExecutor implements IPathExecutor, Helper {
             if (data != null) {
                 BetterBlockPos fallDest = new BetterBlockPos(data.getB());
                 if (!path.positions().contains(fallDest)) {
-                    throw new IllegalStateException();
+                    throw new IllegalStateException(String.format(
+                            "Fall override at %s %s %s returned illegal destination %s %s %s",
+                            current.getSrc(), fallDest));
                 }
                 if (ctx.playerFeet().equals(fallDest)) {
                     pathPosition = path.positions().indexOf(fallDest);
@@ -603,7 +605,9 @@ public class PathExecutor implements IPathExecutor, Helper {
         }
         return SplicedPath.trySplice(path, next.path, false).map(path -> {
             if (!path.getDest().equals(next.getPath().getDest())) {
-                throw new IllegalStateException();
+                throw new IllegalStateException(String.format(
+                        "Path has end %s instead of %s after splicing",
+                        path.getDest(), next.getPath().getDest()));
             }
             PathExecutor ret = new PathExecutor(behavior, path);
             ret.pathPosition = pathPosition;
@@ -619,7 +623,9 @@ public class PathExecutor implements IPathExecutor, Helper {
             int cutoffAmt = Baritone.settings().pathHistoryCutoffAmount.value;
             CutoffPath newPath = new CutoffPath(path, cutoffAmt, path.length() - 1);
             if (!newPath.getDest().equals(path.getDest())) {
-                throw new IllegalStateException();
+                throw new IllegalStateException(String.format(
+                        "Path has end %s instead of %s after trimming its start",
+                        newPath.getDest(), path.getDest()));
             }
             logDebug("Discarding earliest segment movements, length cut from " + path.length() + " to " + newPath.length());
             PathExecutor ret = new PathExecutor(behavior, newPath);

src/main/java/baritone/pathing/path/SplicedPath.java

@@ -92,7 +92,7 @@ public class SplicedPath extends PathBase {
         }
         int positionInSecond = second.positions().indexOf(first.positions().get(firstPositionInSecond));
         if (!allowOverlapCutoff && positionInSecond != 0) {
-            throw new IllegalStateException();
+            throw new IllegalStateException("Paths to be spliced are overlapping incorrectly");
         }
         List<BetterBlockPos> positions = new ArrayList<>();
         List<IMovement> movements = new ArrayList<>();

src/main/java/baritone/process/BuilderProcess.java

@@ -30,6 +30,8 @@ import baritone.api.schematic.ISchematic;
 import baritone.api.schematic.IStaticSchematic;
 import baritone.api.schematic.MaskSchematic;
 import baritone.api.schematic.SubstituteSchematic;
+import baritone.api.schematic.RotatedSchematic;
+import baritone.api.schematic.MirroredSchematic;
 import baritone.api.schematic.format.ISchematicFormat;
 import baritone.api.utils.*;
 import baritone.api.utils.input.Input;
@@ -42,17 +44,13 @@ import baritone.utils.PathingCommandContext;
 import baritone.utils.schematic.MapArtSchematic;
 import baritone.utils.schematic.SelectionSchematic;
 import baritone.utils.schematic.SchematicSystem;
-import baritone.utils.schematic.format.defaults.LitematicaSchematic;
 import baritone.utils.schematic.litematica.LitematicaHelper;
 import baritone.utils.schematic.schematica.SchematicaHelper;
-import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
 import net.minecraft.core.Vec3i;
-import net.minecraft.nbt.NbtAccounter;
-import net.minecraft.nbt.NbtIo;
 import net.minecraft.util.Tuple;
 import net.minecraft.world.InteractionHand;
 import net.minecraft.world.item.BlockItem;
@@ -77,7 +75,6 @@ import net.minecraft.world.phys.shapes.VoxelShape;
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.nio.file.Files;
 import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -120,6 +117,12 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
         if (!Baritone.settings().buildSubstitutes.value.isEmpty()) {
             this.schematic = new SubstituteSchematic(this.schematic, Baritone.settings().buildSubstitutes.value);
         }
+        if (Baritone.settings().buildSchematicMirror.value != net.minecraft.world.level.block.Mirror.NONE) {
+            this.schematic = new MirroredSchematic(this.schematic, Baritone.settings().buildSchematicMirror.value);
+        }
+        if (Baritone.settings().buildSchematicRotation.value != net.minecraft.world.level.block.Rotation.NONE) {
+            this.schematic = new RotatedSchematic(this.schematic, Baritone.settings().buildSchematicRotation.value);
+        }
         // TODO this preserves the old behavior, but maybe we should bake the setting value right here
         this.schematic = new MaskSchematic(this.schematic) {
             @Override
@@ -230,19 +233,13 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
     public void buildOpenLitematic(int i) {
         if (LitematicaHelper.isLitematicaPresent()) {
             //if java.lang.NoSuchMethodError is thrown see comment in SchematicPlacementManager
-            if (LitematicaHelper.hasLoadedSchematic()) {
-                String name = LitematicaHelper.getName(i);
-                try {
-                    LitematicaSchematic schematic1 = new LitematicaSchematic(NbtIo.readCompressed(Files.newInputStream(LitematicaHelper.getSchematicFile(i).toPath()), NbtAccounter.unlimitedHeap()), false);
-                    Vec3i correctedOrigin = LitematicaHelper.getCorrectedOrigin(schematic1, i);
-                    ISchematic schematic2 = LitematicaHelper.blackMagicFuckery(schematic1, i);
-                    schematic2 = applyMapArtAndSelection(origin, (IStaticSchematic) schematic2);
-                    build(name, schematic2, correctedOrigin);
-                } catch (Exception e) {
-                    logDirect("Schematic File could not be loaded.");
-                }
+            if (LitematicaHelper.hasLoadedSchematic(i)) {
+                Tuple<IStaticSchematic, Vec3i> schematic = LitematicaHelper.getSchematic(i);
+                Vec3i correctedOrigin = schematic.getB();
+                ISchematic schematic2 = applyMapArtAndSelection(correctedOrigin, schematic.getA());
+                build(schematic.getA().toString(), schematic2, correctedOrigin);
             } else {
-                logDirect("No schematic currently loaded");
+                logDirect(String.format("List of placements has no entry %s", i + 1));
             }
         } else {
             logDirect("Litematica is not present");
@@ -373,7 +370,11 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
             if (!placementPlausible(new BetterBlockPos(x, y, z), toPlace)) {
                 continue;
             }
-            AABB aabb = placeAgainstState.getShape(ctx.world(), placeAgainstPos).bounds();
+            VoxelShape shape = placeAgainstState.getShape(ctx.world(), placeAgainstPos);
+            if (shape.isEmpty()) {
+                continue;
+            }
+            AABB aabb = shape.bounds();
             for (Vec3 placementMultiplier : aabbSideMultipliers(against)) {
                 double placeX = placeAgainstPos.x + aabb.minX * placementMultiplier.x + aabb.maxX * (1 - placementMultiplier.x);
                 double placeY = placeAgainstPos.y + aabb.minY * placementMultiplier.y + aabb.maxY * (1 - placementMultiplier.y);
@@ -440,7 +441,7 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
                 double z = side.getStepZ() == 0 ? 0.5 : (1 + side.getStepZ()) / 2D;
                 return new Vec3[]{new Vec3(x, 0.25, z), new Vec3(x, 0.75, z)};
             default: // null
-                throw new IllegalStateException();
+                throw new IllegalStateException("Unexpected side " + side);
         }
     }
 
@@ -717,13 +718,16 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
         List<BetterBlockPos> sourceLiquids = new ArrayList<>();
         List<BetterBlockPos> flowingLiquids = new ArrayList<>();
         Map<BlockState, Integer> missing = new HashMap<>();
+        List<BetterBlockPos> outOfBounds = new ArrayList<>();
         incorrectPositions.forEach(pos -> {
             BlockState state = bcc.bsi.get0(pos);
             if (state.getBlock() instanceof AirBlock) {
-                if (containsBlockState(approxPlaceable, bcc.getSchematic(pos.x, pos.y, pos.z, state))) {
+                BlockState desired = bcc.getSchematic(pos.x, pos.y, pos.z, state);
+                if (desired == null) {
+                    outOfBounds.add(pos);
+                } else if (containsBlockState(approxPlaceable, desired)) {
                     placeable.add(pos);
                 } else {
-                    BlockState desired = bcc.getSchematic(pos.x, pos.y, pos.z, state);
                     missing.put(desired, 1 + missing.getOrDefault(desired, 0));
                 }
             } else {
@@ -741,6 +745,7 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
                 }
             }
         });
+        incorrectPositions.removeAll(outOfBounds);
         List<Goal> toBreak = new ArrayList<>();
         breakable.forEach(pos -> toBreak.add(breakGoal(pos, bcc)));
         List<Goal> toPlace = new ArrayList<>();
@@ -993,6 +998,22 @@ public final class BuilderProcess extends BaritoneProcessHelper implements IBuil
         return paused ? "Builder Paused" : "Building " + name;
     }
 
+    @Override
+    public Optional<Integer> getMinLayer() {
+        if (Baritone.settings().buildInLayers.value) {
+            return Optional.of(this.layer);
+        }
+        return Optional.empty();
+    }
+
+    @Override
+    public Optional<Integer> getMaxLayer() {
+        if (Baritone.settings().buildInLayers.value) {
+            return Optional.of(this.stopAtHeight);
+        }
+        return Optional.empty();
+    }
+
     private List<BlockState> approxPlaceable(int size) {
         List<BlockState> result = new ArrayList<>();
         for (int i = 0; i < size; i++) {

src/main/java/baritone/process/CustomGoalProcess.java

@@ -114,7 +114,7 @@ public final class CustomGoalProcess extends BaritoneProcessHelper implements IC
                 }
                 return new PathingCommand(this.goal, PathingCommandType.SET_GOAL_AND_PATH);
             default:
-                throw new IllegalStateException();
+                throw new IllegalStateException("Unexpected state " + this.state);
         }
     }
 

src/main/java/baritone/process/ExploreProcess.java

@@ -118,7 +118,9 @@ public final class ExploreProcess extends BaritoneProcessHelper implements IExpl
                     int dz = (mult * 2 - 1) * zval; // dz can be either -zval or zval
                     int trueDist = Math.abs(dx) + Math.abs(dz);
                     if (trueDist != dist) {
-                        throw new IllegalStateException();
+                        throw new IllegalStateException(String.format(
+                                "Offset %s %s has distance %s, expected %s",
+                                dx, dz, trueDist, dist));
                     }
                     switch (filter.isAlreadyExplored(chunkX + dx, chunkZ + dz)) {
                         case UNKNOWN:

src/main/java/baritone/process/FarmProcess.java

@@ -310,7 +310,7 @@ public final class FarmProcess extends BaritoneProcessHelper implements IFarmPro
                 if (!(ctx.world().getBlockState(pos.relative(dir)).getBlock() instanceof AirBlock)) {
                     continue;
                 }
-                Vec3 faceCenter = Vec3.atCenterOf(pos).add(Vec3.atLowerCornerOf(dir.getNormal()).scale(0.5));
+                Vec3 faceCenter = Vec3.atCenterOf(pos).add(Vec3.atLowerCornerOf(dir.getUnitVec3i()).scale(0.5));
                 Optional<Rotation> rot = RotationUtils.reachableOffset(ctx, pos, faceCenter, blockReachDistance, false);
                 if (rot.isPresent() && isSafeToCancel && baritone.getInventoryBehavior().throwaway(true, this::isCocoa)) {
                     HitResult result = RayTraceUtils.rayTraceTowards(ctx.player(), rot.get(), blockReachDistance);

src/main/java/baritone/process/FollowProcess.java

@@ -19,6 +19,7 @@ package baritone.process;
 
 import baritone.Baritone;
 import baritone.api.pathing.goals.Goal;
+import baritone.api.pathing.goals.GoalBlock;
 import baritone.api.pathing.goals.GoalComposite;
 import baritone.api.pathing.goals.GoalNear;
 import baritone.api.pathing.goals.GoalXZ;
@@ -27,11 +28,14 @@ import baritone.api.process.PathingCommand;
 import baritone.api.process.PathingCommandType;
 import baritone.api.utils.BetterBlockPos;
 import baritone.utils.BaritoneProcessHelper;
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.entity.item.ItemEntity;
+import net.minecraft.world.item.ItemStack;
+
 import java.util.List;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
-import net.minecraft.core.BlockPos;
-import net.minecraft.world.entity.Entity;
 
 /**
  * Follow an entity
@@ -42,6 +46,7 @@ public final class FollowProcess extends BaritoneProcessHelper implements IFollo
 
     private Predicate<Entity> filter;
     private List<Entity> cache;
+    private boolean into; // walk straight into the target, regardless of settings
 
     public FollowProcess(Baritone baritone) {
         super(baritone);
@@ -56,12 +61,15 @@ public final class FollowProcess extends BaritoneProcessHelper implements IFollo
 
     private Goal towards(Entity following) {
         BlockPos pos;
-        if (Baritone.settings().followOffsetDistance.value == 0) {
+        if (Baritone.settings().followOffsetDistance.value == 0 || into) {
             pos = following.blockPosition();
         } else {
             GoalXZ g = GoalXZ.fromDirection(following.position(), Baritone.settings().followOffsetDirection.value, Baritone.settings().followOffsetDistance.value);
             pos = new BetterBlockPos(g.getX(), following.position().y, g.getZ());
         }
+        if (into) {
+            return new GoalBlock(pos);
+        }
         return new GoalNear(pos, Baritone.settings().followRadius.value);
     }
 
@@ -76,6 +84,10 @@ public final class FollowProcess extends BaritoneProcessHelper implements IFollo
         if (entity.equals(ctx.player())) {
             return false;
         }
+        int maxDist = Baritone.settings().followTargetMaxDistance.value;
+        if (maxDist != 0 && entity.distanceToSqr(ctx.player()) > maxDist * maxDist) {
+            return false;
+        }
         return ctx.entitiesStream().anyMatch(entity::equals);
     }
 
@@ -110,6 +122,13 @@ public final class FollowProcess extends BaritoneProcessHelper implements IFollo
     @Override
     public void follow(Predicate<Entity> filter) {
         this.filter = filter;
+        this.into = false;
+    }
+
+    @Override
+    public void pickup(Predicate<ItemStack> filter) {
+        this.filter = e -> e instanceof ItemEntity && filter.test(((ItemEntity) e).getItem());
+        this.into = true;
     }
 
     @Override

src/main/java/baritone/process/MineProcess.java

@@ -77,7 +77,6 @@ public final class MineProcess extends BaritoneProcessHelper implements IMinePro
             int curr = ctx.player().getInventory().items.stream()
                     .filter(stack -> filter.has(stack))
                     .mapToInt(ItemStack::getCount).sum();
-            System.out.println("Currently have " + curr + " valid items");
             if (curr >= desiredQuantity) {
                 logDirect("Have " + curr + " valid items");
                 cancel();
@@ -119,7 +118,7 @@ public final class MineProcess extends BaritoneProcessHelper implements IMinePro
                 .filter(pos -> pos.getX() == ctx.playerFeet().getX() && pos.getZ() == ctx.playerFeet().getZ())
                 .filter(pos -> pos.getY() >= ctx.playerFeet().getY())
                 .filter(pos -> !(BlockStateInterface.get(ctx, pos).getBlock() instanceof AirBlock)) // after breaking a block, it takes mineGoalUpdateInterval ticks for it to actually update this list =(
-                .min(Comparator.comparingDouble(ctx.playerFeet()::distSqr));
+                .min(Comparator.comparingDouble(ctx.playerFeet().above()::distSqr));
         baritone.getInputOverrideHandler().clearAllKeys();
         if (shaft.isPresent() && ctx.player().onGround()) {
             BlockPos pos = shaft.get();
@@ -486,7 +485,11 @@ public final class MineProcess extends BaritoneProcessHelper implements IMinePro
 
 
     public static boolean plausibleToBreak(CalculationContext ctx, BlockPos pos) {
-        if (MovementHelper.getMiningDurationTicks(ctx, pos.getX(), pos.getY(), pos.getZ(), ctx.bsi.get0(pos), true) >= COST_INF) {
+        BlockState state = ctx.bsi.get0(pos);
+        if (MovementHelper.getMiningDurationTicks(ctx, pos.getX(), pos.getY(), pos.getZ(), state, true) >= COST_INF) {
+            return false;
+        }
+        if (MovementHelper.avoidBreaking(ctx.bsi, pos.getX(), pos.getY(), pos.getZ(), state)) {
             return false;
         }
 

src/main/java/baritone/selection/Selection.java

@@ -37,7 +37,7 @@ public class Selection implements ISelection {
                 max.z - min.z + 1
         );
 
-        this.aabb = new AABB(this.min);
+        this.aabb = new AABB(min.x, min.y, min.z, max.x + 1, max.y + 1, max.z + 1);
     }
 
     @Override

src/main/java/baritone/utils/BlockStateInterface.java

@@ -70,7 +70,7 @@ public class BlockStateInterface {
         }
         this.useTheRealWorld = !Baritone.settings().pathThroughCachedOnly.value;
         if (!ctx.minecraft().isSameThread()) {
-            throw new IllegalStateException();
+            throw new IllegalStateException("BlockStateInterface must be constructed on the main thread");
         }
         this.isPassableBlockPos = new BlockPos.MutableBlockPos();
         this.access = new BlockStateInterfaceAccessWrapper(this);

src/main/java/baritone/utils/BlockStateInterfaceAccessWrapper.java

@@ -56,12 +56,12 @@ public final class BlockStateInterfaceAccessWrapper implements BlockGetter {
 
     @Override
     public int getHeight() {
-        return 255;
+        return bsi.world.getHeight();
     }
 
     @Override
-    public int getMinBuildHeight() {
-        return 0;
+    public int getMinY() {
+        return bsi.world.getMinY();
     }
 
 }

src/main/java/baritone/utils/IRenderer.java

@@ -24,7 +24,10 @@ import com.mojang.blaze3d.platform.GlStateManager;
 import com.mojang.blaze3d.systems.RenderSystem;
 import com.mojang.blaze3d.vertex.*;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.CoreShaders;
 import net.minecraft.client.renderer.GameRenderer;
+import net.minecraft.client.renderer.RenderType;
+import net.minecraft.client.renderer.ShaderProgram;
 import net.minecraft.client.renderer.texture.TextureManager;
 import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.Vec3;
@@ -50,7 +53,7 @@ public interface IRenderer {
 
     static BufferBuilder startLines(Color color, float alpha, float lineWidth, boolean ignoreDepth) {
         RenderSystem.enableBlend();
-        RenderSystem.setShader(GameRenderer::getPositionColorShader);
+        RenderSystem.setShader(CoreShaders.POSITION_COLOR);
         RenderSystem.blendFuncSeparate(
                 GlStateManager.SourceFactor.SRC_ALPHA,
                 GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA,
@@ -65,7 +68,7 @@ public interface IRenderer {
         if (ignoreDepth) {
             RenderSystem.disableDepthTest();
         }
-        RenderSystem.setShader(GameRenderer::getRendertypeLinesShader);
+        RenderSystem.setShader(CoreShaders.RENDERTYPE_LINES);
         return tessellator.begin(VertexFormat.Mode.LINES, DefaultVertexFormat.POSITION_COLOR_NORMAL);
     }
 
@@ -78,7 +81,7 @@ public interface IRenderer {
         if (meshData != null) {
             BufferUploader.drawWithShader(meshData);
         }
-        
+
         if (ignoredDepth) {
             RenderSystem.enableDepthTest();
         }

src/main/java/baritone/utils/PathRenderer.java

@@ -262,12 +262,12 @@ public final class PathRenderer implements IRenderer {
             drawDankLitGoalBox(bufferBuilder, stack, color, minX, maxX, minZ, maxZ, minY, maxY, y1, y2, setupRender);
         } else if (goal instanceof GoalXZ) {
             GoalXZ goalPos = (GoalXZ) goal;
-            minY = ctx.world().getMinBuildHeight();
-            maxY = ctx.world().getMaxBuildHeight();
+            minY = ctx.world().getMinY();
+            maxY = ctx.world().getMaxY();
 
             if (settings.renderGoalXZBeacon.value) {
                 //TODO: check
-                textureManager.bindForSetup(TEXTURE_BEACON_BEAM);
+                textureManager.getTexture(TEXTURE_BEACON_BEAM).bind();
                 if (settings.renderGoalIgnoreDepth.value) {
                     RenderSystem.disableDepthTest();
                 }

src/main/java/baritone/utils/PathingControlManager.java

@@ -68,7 +68,7 @@ public class PathingControlManager implements IPathingControlManager {
         for (IBaritoneProcess proc : processes) {
             proc.onLostControl();
             if (proc.isActive() && !proc.isTemporary()) { // it's okay only for a temporary thing (like combat pause) to maintain control even if you say to cancel
-                throw new IllegalStateException(proc.displayName());
+                throw new IllegalStateException(proc.displayName() + " stayed active after being cancelled");
             }
         }
     }
@@ -121,7 +121,7 @@ public class PathingControlManager implements IPathingControlManager {
                 }
                 break;
             default:
-                throw new IllegalStateException();
+                throw new IllegalStateException("Unexpected command type " + command.commandType);
         }
     }
 

src/main/java/baritone/utils/PlayerMovementInput.java

@@ -18,8 +18,9 @@
 package baritone.utils;
 
 import baritone.api.utils.input.Input;
+import net.minecraft.client.player.ClientInput;
 
-public class PlayerMovementInput extends net.minecraft.client.player.Input {
+public class PlayerMovementInput extends ClientInput {
 
     private final InputOverrideHandler handler;
 
@@ -31,28 +32,36 @@ public class PlayerMovementInput extends net.minecraft.client.player.Input {
     public void tick(boolean p_225607_1_, float f) {
         this.leftImpulse = 0.0F;
         this.forwardImpulse = 0.0F;
+        boolean jumping = handler.isInputForcedDown(Input.JUMP); // oppa gangnam style
 
-        this.jumping = handler.isInputForcedDown(Input.JUMP); // oppa gangnam style
-
-        if (this.up = handler.isInputForcedDown(Input.MOVE_FORWARD)) {
+        boolean up = handler.isInputForcedDown(Input.MOVE_FORWARD);
+        if (up) {
             this.forwardImpulse++;
         }
 
-        if (this.down = handler.isInputForcedDown(Input.MOVE_BACK)) {
+        boolean down = handler.isInputForcedDown(Input.MOVE_BACK);
+        if (down) {
             this.forwardImpulse--;
         }
 
-        if (this.left = handler.isInputForcedDown(Input.MOVE_LEFT)) {
+        boolean left = handler.isInputForcedDown(Input.MOVE_LEFT);
+        if (left) {
             this.leftImpulse++;
         }
 
-        if (this.right = handler.isInputForcedDown(Input.MOVE_RIGHT)) {
+        boolean right = handler.isInputForcedDown(Input.MOVE_RIGHT);
+        if (right) {
             this.leftImpulse--;
         }
 
-        if (this.shiftKeyDown = handler.isInputForcedDown(Input.SNEAK)) {
+        boolean sneaking = handler.isInputForcedDown(Input.SNEAK);
+        if (sneaking) {
             this.leftImpulse *= 0.3D;
             this.forwardImpulse *= 0.3D;
         }
+
+        boolean sprinting = handler.isInputForcedDown(Input.SPRINT);
+
+        this.keyPresses = new net.minecraft.world.entity.player.Input(up, down, left, right, jumping, sneaking, sprinting);
     }
 }

src/main/java/baritone/utils/ToolSet.java

@@ -20,12 +20,17 @@ package baritone.utils;
 import baritone.Baritone;
 import net.minecraft.client.player.LocalPlayer;
 import net.minecraft.core.Holder;
+import net.minecraft.tags.ItemTags;
+import net.minecraft.tags.TagKey;
 import net.minecraft.world.effect.MobEffects;
 import net.minecraft.world.entity.ai.attributes.Attributes;
+import net.minecraft.world.item.Item;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.SwordItem;
-import net.minecraft.world.item.TieredItem;
-import net.minecraft.world.item.enchantment.*;
+import net.minecraft.world.item.enchantment.Enchantment;
+import net.minecraft.world.item.enchantment.EnchantmentEffectComponents;
+import net.minecraft.world.item.enchantment.Enchantments;
+import net.minecraft.world.item.enchantment.ItemEnchantments;
 import net.minecraft.world.item.enchantment.effects.EnchantmentAttributeEffect;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.state.BlockState;
@@ -55,6 +60,20 @@ public class ToolSet {
 
     private final LocalPlayer player;
 
+    /**
+     * Used for evaluating the material cost of a tool.
+     * see {@link #getMaterialCost(ItemStack)}
+     * Prefer tools with lower material cost (lower index in this list).
+     */
+    private static final List<TagKey<Item>> materialTagsPriorityList = List.of(
+        ItemTags.WOODEN_TOOL_MATERIALS,
+        ItemTags.STONE_TOOL_MATERIALS,
+        ItemTags.IRON_TOOL_MATERIALS,
+        ItemTags.GOLD_TOOL_MATERIALS,
+        ItemTags.DIAMOND_TOOL_MATERIALS,
+        ItemTags.NETHERITE_TOOL_MATERIALS
+    );
+
     public ToolSet(LocalPlayer player) {
         breakStrengthCache = new HashMap<>();
         this.player = player;
@@ -79,20 +98,18 @@ public class ToolSet {
     }
 
     /**
-     * Evaluate the material cost of a possible tool. The priority matches the
-     * harvest level order; there is a chance for multiple at the same with modded tools
-     * but in that case we don't really care.
-     *
+     * Evaluate the material cost of a possible tool.
+     * If all else is equal, we want to prefer the tool with the lowest material cost.
+     * i.e. we want to prefer a wooden pickaxe over a stone pickaxe, if all else is equal.
      * @param itemStack a possibly empty ItemStack
      * @return values from 0 up
      */
     private int getMaterialCost(ItemStack itemStack) {
-        if (itemStack.getItem() instanceof TieredItem) {
-            TieredItem tool = (TieredItem) itemStack.getItem();
-            return (int) tool.getTier().getAttackDamageBonus();
-        } else {
-            return -1;
+        for (int i = 0; i < materialTagsPriorityList.size(); i++) {
+            final TagKey<Item> tag = materialTagsPriorityList.get(i);
+            if (itemStack.is(tag)) return i;
         }
+        return -1;
     }
 
     public boolean hasSilkTouch(ItemStack stack) {

src/main/java/baritone/utils/schematic/SchematicSystem.java

@@ -24,6 +24,7 @@ import baritone.utils.schematic.format.DefaultSchematicFormats;
 
 import java.io.File;
 import java.util.Arrays;
+import java.util.List;
 import java.util.Optional;
 
 /**
@@ -48,4 +49,9 @@ public enum SchematicSystem implements ISchematicSystem {
     public Optional<ISchematicFormat> getByFile(File file) {
         return this.registry.stream().filter(format -> format.isFileType(file)).findFirst();
     }
+
+    @Override
+    public List<String> getFileExtensions() {
+        return this.registry.stream().map(ISchematicFormat::getFileExtensions).flatMap(List::stream).toList();
+    }
 }

src/main/java/baritone/utils/schematic/StaticSchematic.java

@@ -32,6 +32,16 @@ public class StaticSchematic extends AbstractSchematic implements IStaticSchemat
 
     protected BlockState[][][] states;
 
+    public StaticSchematic() {}
+
+    public StaticSchematic(BlockState[][][] states) {
+        this.states = states;
+        boolean empty = states.length == 0 || states[0].length == 0 || states[0][0].length == 0;
+        this.x = empty ? 0 : states.length;
+        this.z = empty ? 0 : states[0].length;
+        this.y = empty ? 0 : states[0][0].length;
+    }
+
     @Override
     public BlockState desiredState(int x, int y, int z, BlockState current, List<BlockState> approxPlaceable) {
         return this.states[x][z][y];

src/main/java/baritone/utils/schematic/format/DefaultSchematicFormats.java

@@ -22,14 +22,16 @@ import baritone.api.schematic.format.ISchematicFormat;
 import baritone.utils.schematic.format.defaults.LitematicaSchematic;
 import baritone.utils.schematic.format.defaults.MCEditSchematic;
 import baritone.utils.schematic.format.defaults.SpongeSchematic;
+import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.NbtAccounter;
+import net.minecraft.nbt.NbtIo;
 import org.apache.commons.io.FilenameUtils;
 
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtIo;
+import java.util.Collections;
+import java.util.List;
 
 /**
  * Default implementations of {@link ISchematicFormat}
@@ -84,7 +86,7 @@ public enum DefaultSchematicFormats implements ISchematicFormat {
                 case 6: //1.18-1.20
                     throw new UnsupportedOperationException("This litematic Version is too old.");
                 case 7: //1.21+
-                    return new LitematicaSchematic(nbt, false);
+                    return new LitematicaSchematic(nbt);
                 default:
                     throw new UnsupportedOperationException("Unsuported Version of a Litematica Schematic");
             }
@@ -101,4 +103,9 @@ public enum DefaultSchematicFormats implements ISchematicFormat {
     public boolean isFileType(File file) {
         return this.extension.equalsIgnoreCase(FilenameUtils.getExtension(file.getAbsolutePath()));
     }
+
+    @Override
+    public List<String> getFileExtensions() {
+        return Collections.singletonList(this.extension);
+    }
 }

src/main/java/baritone/utils/schematic/format/defaults/LitematicaSchematic.java

@@ -17,19 +17,23 @@
 
 package baritone.utils.schematic.format.defaults;
 
+import baritone.api.schematic.CompositeSchematic;
+import baritone.api.schematic.IStaticSchematic;
 import baritone.utils.schematic.StaticSchematic;
-import net.minecraft.core.Registry;
+import net.minecraft.core.Holder;
 import net.minecraft.core.Vec3i;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.block.state.properties.Property;
 import org.apache.commons.lang3.Validate;
 
 import javax.annotation.Nullable;
+import java.util.Collections;
 import java.util.Optional;
 
 /**
@@ -39,35 +43,24 @@ import java.util.Optional;
  * @author rycbar
  * @since 22.09.2022
  */
-public final class LitematicaSchematic extends StaticSchematic {
-    private final Vec3i offsetMinCorner;
-    private final CompoundTag nbt;
+public final class LitematicaSchematic extends CompositeSchematic implements IStaticSchematic {
 
     /**
      * @param nbtTagCompound a decompressed file stream aka nbt data.
      * @param rotated        if the schematic is rotated by 90°.
      */
-    public LitematicaSchematic(CompoundTag nbtTagCompound, boolean rotated) {
-        this.nbt = nbtTagCompound;
-        this.offsetMinCorner = new Vec3i(getMinOfSchematic("x"), getMinOfSchematic("y"), getMinOfSchematic("z"));
-        this.y = Math.abs(nbt.getCompound("Metadata").getCompound("EnclosingSize").getInt("y"));
-
-        if (rotated) {
-            this.x = Math.abs(nbt.getCompound("Metadata").getCompound("EnclosingSize").getInt("z"));
-            this.z = Math.abs(nbt.getCompound("Metadata").getCompound("EnclosingSize").getInt("x"));
-        } else {
-            this.x = Math.abs(nbt.getCompound("Metadata").getCompound("EnclosingSize").getInt("x"));
-            this.z = Math.abs(nbt.getCompound("Metadata").getCompound("EnclosingSize").getInt("z"));
-        }
-        this.states = new BlockState[this.x][this.z][this.y];
-        fillInSchematic();
+    public LitematicaSchematic(CompoundTag nbt) {
+        super(0, 0, 0);
+        fillInSchematic(nbt);
     }
 
     /**
-     * @return Array of subregion names.
+     * @return Array of subregion tags.
      */
-    private static String[] getRegions(CompoundTag nbt) {
-        return nbt.getCompound("Regions").getAllKeys().toArray(new String[0]);
+    private static CompoundTag[] getRegions(CompoundTag nbt) {
+        return nbt.getCompound("Regions").getAllKeys().stream()
+                .map(nbt.getCompound("Regions")::getCompound)
+                .toArray(CompoundTag[]::new);
     }
 
     /**
@@ -76,14 +69,10 @@ public final class LitematicaSchematic extends StaticSchematic {
      * @param s axis that should be read.
      * @return the lower coord of the requested axis.
      */
-    private static int getMinOfSubregion(CompoundTag nbt, String subReg, String s) {
-        int a = nbt.getCompound("Regions").getCompound(subReg).getCompound("Position").getInt(s);
-        int b = nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt(s);
-        if (b < 0) {
-            b++;
-        }
-        return Math.min(a, a + b);
-
+    private static int getMinOfSubregion(CompoundTag subReg, String s) {
+        int a = subReg.getCompound("Position").getInt(s);
+        int b = subReg.getCompound("Size").getInt(s);
+        return Math.min(a, a + b + 1);
     }
 
     /**
@@ -94,8 +83,14 @@ public final class LitematicaSchematic extends StaticSchematic {
         BlockState[] blockList = new BlockState[blockStatePalette.size()];
 
         for (int i = 0; i < blockStatePalette.size(); i++) {
-            Block block = BuiltInRegistries.BLOCK.get(ResourceLocation.parse((((CompoundTag) blockStatePalette.get(i)).getString("Name"))));
-            CompoundTag properties = ((CompoundTag) blockStatePalette.get(i)).getCompound("Properties");
+            CompoundTag tag = (CompoundTag) blockStatePalette.get(i);
+            ResourceLocation blockKey = ResourceLocation.tryParse(tag.getString("Name"));
+            Block block = blockKey == null
+                ? Blocks.AIR
+                : BuiltInRegistries.BLOCK.get(blockKey)
+                    .map(Holder.Reference::value)
+                    .orElse(Blocks.AIR);
+            CompoundTag properties = tag.getCompound("Properties");
 
             blockList[i] = getBlockState(block, properties);
         }
@@ -110,7 +105,7 @@ public final class LitematicaSchematic extends StaticSchematic {
     private static BlockState getBlockState(Block block, CompoundTag properties) {
         BlockState blockState = block.defaultBlockState();
 
-        for (Object key : properties.getAllKeys().toArray()) {
+        for (Object key : properties.getAllKeys()) {
             Property<?> property = block.getStateDefinition().getProperty((String) key);
             String propertyValue = properties.getString((String) key);
             if (property != null) {
@@ -146,43 +141,19 @@ public final class LitematicaSchematic extends StaticSchematic {
      *
      * @return the volume of the subregion.
      */
-    private static long getVolume(CompoundTag nbt, String subReg) {
-        return Math.abs(
-                nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt("x") *
-                        nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt("y") *
-                        nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt("z"));
-    }
-
-    /**
-     * @return array of Long values.
-     */
-    private static long[] getBlockStates(CompoundTag nbt, String subReg) {
-        return nbt.getCompound("Regions").getCompound(subReg).getLongArray("BlockStates");
-    }
-
-    /**
-     * Subregion don't have to be the same size as the enclosing size of the schematic. If they are smaller we check here if the current block is part of the subregion.
-     *
-     * @param x coord of the block relative to the minimum corner.
-     * @param y coord of the block relative to the minimum corner.
-     * @param z coord of the block relative to the minimum corner.
-     * @return if the current block is part of the subregion.
-     */
-    private static boolean inSubregion(CompoundTag nbt, String subReg, int x, int y, int z) {
-        return x >= 0 && y >= 0 && z >= 0 &&
-                x < Math.abs(nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt("x")) &&
-                y < Math.abs(nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt("y")) &&
-                z < Math.abs(nbt.getCompound("Regions").getCompound(subReg).getCompound("Size").getInt("z"));
+    private static long getVolume(CompoundTag subReg) {
+        CompoundTag size = subReg.getCompound("Size");
+        return Math.abs(size.getInt("x") * size.getInt("y") * size.getInt("z"));
     }
 
     /**
      * @param s axis.
      * @return the lowest coordinate of that axis of the schematic.
      */
-    private int getMinOfSchematic(String s) {
+    private static int getMinOfSchematic(CompoundTag nbt, String s) {
         int n = Integer.MAX_VALUE;
-        for (String subReg : getRegions(nbt)) {
-            n = Math.min(n, getMinOfSubregion(nbt, subReg, s));
+        for (CompoundTag subReg : getRegions(nbt)) {
+            n = Math.min(n, getMinOfSubregion(subReg, s));
         }
         return n;
     }
@@ -190,18 +161,18 @@ public final class LitematicaSchematic extends StaticSchematic {
     /**
      * reads the file data.
      */
-    private void fillInSchematic() {
-        for (String subReg : getRegions(nbt)) {
-            ListTag usedBlockTypes = nbt.getCompound("Regions").getCompound(subReg).getList("BlockStatePalette", 10);
+    private void fillInSchematic(CompoundTag nbt) {
+        Vec3i offsetMinCorner = new Vec3i(getMinOfSchematic(nbt, "x"), getMinOfSchematic(nbt, "y"), getMinOfSchematic(nbt, "z"));
+        for (CompoundTag subReg : getRegions(nbt)) {
+            ListTag usedBlockTypes = subReg.getList("BlockStatePalette", 10);
             BlockState[] blockList = getBlockList(usedBlockTypes);
 
             int bitsPerBlock = getBitsPerBlock(usedBlockTypes.size());
-            long regionVolume = getVolume(nbt, subReg);
-            long[] blockStateArray = getBlockStates(nbt, subReg);
+            long regionVolume = getVolume(subReg);
+            long[] blockStateArray = subReg.getLongArray("BlockStates");
 
             LitematicaBitArray bitArray = new LitematicaBitArray(bitsPerBlock, regionVolume, blockStateArray);
-
-            writeSubregionIntoSchematic(nbt, subReg, blockList, bitArray);
+            writeSubregionIntoSchematic(subReg, offsetMinCorner, blockList, bitArray);
         }
     }
 
@@ -211,65 +182,30 @@ public final class LitematicaSchematic extends StaticSchematic {
      * @param blockList list with the different block types used in the schematic.
      * @param bitArray  bit array that holds the placement pattern.
      */
-    private void writeSubregionIntoSchematic(CompoundTag nbt, String subReg, BlockState[] blockList, LitematicaBitArray bitArray) {
-        Vec3i offsetSubregion = new Vec3i(getMinOfSubregion(nbt, subReg, "x"), getMinOfSubregion(nbt, subReg, "y"), getMinOfSubregion(nbt, subReg, "z"));
+    private void writeSubregionIntoSchematic(CompoundTag subReg, Vec3i offsetMinCorner, BlockState[] blockList, LitematicaBitArray bitArray) {
+        int offsetX = getMinOfSubregion(subReg, "x") - offsetMinCorner.getX();
+        int offsetY = getMinOfSubregion(subReg, "y") - offsetMinCorner.getY();
+        int offsetZ = getMinOfSubregion(subReg, "z") - offsetMinCorner.getZ();
+        CompoundTag size = subReg.getCompound("Size");
+        int sizeX = Math.abs(size.getInt("x"));
+        int sizeY = Math.abs(size.getInt("y"));
+        int sizeZ = Math.abs(size.getInt("z"));
+        BlockState[][][] states = new BlockState[sizeX][sizeZ][sizeY];
         int index = 0;
-        for (int y = 0; y < this.y; y++) {
-            for (int z = 0; z < this.z; z++) {
-                for (int x = 0; x < this.x; x++) {
-                    if (inSubregion(nbt, subReg, x, y, z)) {
-                        this.states[x - (offsetMinCorner.getX() - offsetSubregion.getX())][z - (offsetMinCorner.getZ() - offsetSubregion.getZ())][y - (offsetMinCorner.getY() - offsetSubregion.getY())] = blockList[bitArray.getAt(index)];
-                        index++;
-                    }
+        for (int y = 0; y < sizeY; y++) {
+            for (int z = 0; z < sizeZ; z++) {
+                for (int x = 0; x < sizeX; x++) {
+                    states[x][z][y] = blockList[bitArray.getAt(index)];
+                    index++;
                 }
             }
         }
+        this.put(new StaticSchematic(states), offsetX, offsetY, offsetZ);
     }
 
-    /**
-     * @return offset from the schematic origin to the minimum Corner as a Vec3i.
-     */
-    public Vec3i getOffsetMinCorner() {
-        return offsetMinCorner;
-    }
-
-    /**
-     * @return x size of the schematic.
-     */
-    public int getX() {
-        return this.x;
-    }
-
-    /**
-     * @return y size of the schematic.
-     */
-    public int getY() {
-        return this.y;
-    }
-
-    /**
-     * @return z size of the schematic.
-     */
-    public int getZ() {
-        return this.z;
-    }
-
-    /**
-     * @param x          position relative to the minimum corner of the schematic.
-     * @param y          position relative to the minimum corner of the schematic.
-     * @param z          position relative to the minimum corner of the schematic.
-     * @param blockState new blockstate of the block at this position.
-     */
-    public void setDirect(int x, int y, int z, BlockState blockState) {
-        this.states[x][z][y] = blockState;
-    }
-
-    /**
-     * @param rotated if the schematic is rotated by 90°.
-     * @return a copy of the schematic.
-     */
-    public LitematicaSchematic getCopy(boolean rotated) {
-        return new LitematicaSchematic(nbt, rotated);
+    @Override
+    public BlockState getDirect(int x, int y, int z) {
+        return desiredState(x, y, z, null, Collections.emptyList());
     }
 
     /**

src/main/java/baritone/utils/schematic/format/defaults/MCEditSchematic.java

@@ -18,12 +18,14 @@
 package baritone.utils.schematic.format.defaults;
 
 import baritone.utils.schematic.StaticSchematic;
+import net.minecraft.core.Holder;
 import net.minecraft.core.Registry;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.util.datafix.fixes.ItemIdFix;
 import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.BlockState;
 
 /**
@@ -63,7 +65,13 @@ public final class MCEditSchematic extends StaticSchematic {
                         // additional is 0 through 15 inclusive since it's & 0xF above
                         blockID |= additional[blockInd] << 8;
                     }
-                    Block block = BuiltInRegistries.BLOCK.get(ResourceLocation.tryParse(ItemIdFix.getItem(blockID)));
+                    ResourceLocation blockKey = ResourceLocation.tryParse(ItemIdFix.getItem(blockID));
+                    Block block = blockKey == null
+                        ? Blocks.AIR
+                        : BuiltInRegistries.BLOCK.get(blockKey)
+                            .map(Holder.Reference::value)
+                            .orElse(Blocks.AIR);
+
 //                    int meta = metadata[blockInd] & 0xFF;
 //                    this.states[x][z][y] = block.getStateFromMeta(meta);
                     this.states[x][z][y] = block.defaultBlockState();

src/main/java/baritone/utils/schematic/format/defaults/SpongeSchematic.java

@@ -25,11 +25,14 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+
+import net.minecraft.core.Holder;
 import net.minecraft.core.Registry;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.block.state.properties.Property;
 
@@ -107,7 +110,9 @@ public final class SpongeSchematic extends StaticSchematic {
 
         private BlockState deserialize() {
             if (this.blockState == null) {
-                Block block = BuiltInRegistries.BLOCK.get(this.resourceLocation);
+                Block block = BuiltInRegistries.BLOCK.get(this.resourceLocation)
+                    .map(Holder.Reference::value)
+                    .orElse(Blocks.AIR);
                 this.blockState = block.defaultBlockState();
 
                 this.properties.keySet().stream().sorted(String::compareTo).forEachOrdered(key -> {

src/main/java/baritone/utils/schematic/litematica/LitematicaHelper.java

@@ -17,15 +17,26 @@
 
 package baritone.utils.schematic.litematica;
 
-import baritone.utils.schematic.format.defaults.LitematicaSchematic;
+import baritone.api.schematic.CompositeSchematic;
+import baritone.api.schematic.IStaticSchematic;
+import baritone.utils.schematic.StaticSchematic;
 import fi.dy.masa.litematica.Litematica;
 import fi.dy.masa.litematica.data.DataManager;
+import fi.dy.masa.litematica.schematic.placement.SchematicPlacement;
+import fi.dy.masa.litematica.schematic.placement.SubRegionPlacement;
+import fi.dy.masa.litematica.world.SchematicWorldHandler;
+import fi.dy.masa.litematica.world.WorldSchematic;
+import net.minecraft.core.BlockPos;
 import net.minecraft.core.Vec3i;
+import net.minecraft.util.Tuple;
+import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.Mirror;
 import net.minecraft.world.level.block.Rotation;
 import net.minecraft.world.level.block.state.BlockState;
 
-import java.io.File;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 
 /**
  * Helper class that provides access or processes data related to Litmatica schematics.
@@ -48,168 +59,98 @@ public final class LitematicaHelper {
     }
 
     /**
-     * @return if there are loaded schematics.
+     * @return if {@code i} is a valid placement index
      */
-    public static boolean hasLoadedSchematic() {
-        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().size() > 0;
+    public static boolean hasLoadedSchematic(int i) {
+        return 0 <= i && i < DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().size();
     }
 
-    /**
-     * @param i index of the Schematic in the schematic placement list.
-     * @return the name of the requested schematic.
-     */
-    public static String getName(int i) {
-        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().get(i).getName();
+    private static SchematicPlacement getPlacement(int i) {
+        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().get(i);
     }
 
-    /**
-     * @param i index of the Schematic in the schematic placement list.
-     * @return the world coordinates of the schematic origin. This can but does not have to be the minimum corner.
-     */
-    public static Vec3i getOrigin(int i) {
-        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().get(i).getOrigin();
-    }
-
-    /**
-     * @param i index of the Schematic in the schematic placement list.
-     * @return Filepath of the schematic file.
-     */
-    public static File getSchematicFile(int i) {
-        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().get(i).getSchematicFile();
-    }
-
-    /**
-     * @param i index of the Schematic in the schematic placement list.
-     * @return rotation of the schematic placement.
-     */
-    public static Rotation getRotation(int i) {
-        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().get(i).getRotation();
-    }
-
-    /**
-     * @param i index of the Schematic in the schematic placement list.
-     * @return the mirroring of the schematic placement.
-     */
-    public static Mirror getMirror(int i) {
-        return DataManager.getSchematicPlacementManager().getAllSchematicsPlacements().get(i).getMirror();
-    }
-
-    /**
-     * @param schematic original schematic.
-     * @param i         index of the Schematic in the schematic placement list.
-     * @return the minimum corner coordinates of the schematic, after the original schematic got rotated and mirrored.
-     */
-    public static Vec3i getCorrectedOrigin(LitematicaSchematic schematic, int i) {
-        int x = LitematicaHelper.getOrigin(i).getX();
-        int y = LitematicaHelper.getOrigin(i).getY();
-        int z = LitematicaHelper.getOrigin(i).getZ();
-        int mx = schematic.getOffsetMinCorner().getX();
-        int my = schematic.getOffsetMinCorner().getY();
-        int mz = schematic.getOffsetMinCorner().getZ();
-        int sx = (schematic.getX() - 1) * -1;
-        int sz = (schematic.getZ() - 1) * -1;
-
-        Vec3i correctedOrigin;
-        Mirror mirror = LitematicaHelper.getMirror(i);
-        Rotation rotation = LitematicaHelper.getRotation(i);
-
-        //todo there has to be a better way to do this but i cant finde it atm
-        switch (mirror) {
-            case FRONT_BACK:
-            case LEFT_RIGHT:
-                switch ((mirror.ordinal() * 2 + rotation.ordinal()) % 4) {
-                    case 1:
-                        correctedOrigin = new Vec3i(x + (sz - mz), y + my, z + (sx - mx));
-                        break;
-                    case 2:
-                        correctedOrigin = new Vec3i(x + mx, y + my, z + (sz - mz));
-                        break;
-                    case 3:
-                        correctedOrigin = new Vec3i(x + mz, y + my, z + mx);
-                        break;
-                    default:
-                        correctedOrigin = new Vec3i(x + (sx - mx), y + my, z + mz);
-                        break;
-                }
-                break;
-            default:
-                switch (rotation) {
-                    case CLOCKWISE_90:
-                        correctedOrigin = new Vec3i(x + (sz - mz), y + my, z + mx);
-                        break;
-                    case CLOCKWISE_180:
-                        correctedOrigin = new Vec3i(x + (sx - mx), y + my, z + (sz - mz));
-                        break;
-                    case COUNTERCLOCKWISE_90:
-                        correctedOrigin = new Vec3i(x + mz, y + my, z + (sx - mx));
-                        break;
-                    default:
-                        correctedOrigin = new Vec3i(x + mx, y + my, z + mz);
-                        break;
-                }
-        }
-        return correctedOrigin;
-    }
-
-    /**
-     * @param in     the xyz offsets of the block relative to the schematic minimum corner.
-     * @param sizeX  size of the schematic in the x-axis direction.
-     * @param sizeZ  size of the schematic in the z-axis direction.
-     * @param mirror the mirroring of the schematic placement.
-     * @return the corresponding xyz coordinates after mirroring them according to the given mirroring.
-     */
-    public static Vec3i doMirroring(Vec3i in, int sizeX, int sizeZ, Mirror mirror) {
-        int xOut = in.getX();
-        int zOut = in.getZ();
+    private static Vec3i transform(Vec3i in, Mirror mirror, Rotation rotation) {
+        int x = in.getX();
+        int z = in.getZ();
         if (mirror == Mirror.LEFT_RIGHT) {
-            zOut = sizeZ - in.getZ();
+            z = -z;
         } else if (mirror == Mirror.FRONT_BACK) {
-            xOut = sizeX - in.getX();
+            x = -x;
+        }
+        switch (rotation) {
+            case CLOCKWISE_90:
+                return new Vec3i(-z, in.getY(), x);
+            case CLOCKWISE_180:
+                return new Vec3i(-x, in.getY(), -z);
+            case COUNTERCLOCKWISE_90:
+                return new Vec3i(z, in.getY(), -x);
+            default:
+                return new Vec3i(x, in.getY(), z);
         }
-        return new Vec3i(xOut, in.getY(), zOut);
     }
 
     /**
-     * @param in    the xyz offsets of the block relative to the schematic minimum corner.
-     * @param sizeX size of the schematic in the x-axis direction.
-     * @param sizeZ size of the schematic in the z-axis direction.
-     * @return the corresponding xyz coordinates after rotation them 90° clockwise.
+     * @param i   index of the Schematic in the schematic placement list.
+     * @return    The transformed schematic and the position of its minimum corner
      */
-    public static Vec3i rotate(Vec3i in, int sizeX, int sizeZ) {
-        return new Vec3i(sizeX - (sizeX - sizeZ) - in.getZ(), in.getY(), in.getX());
-    }
-
-    /**
-     * IDFK this just grew and it somehow works. If you understand how, pls tell me.
-     *
-     * @param schemIn give in the original schematic.
-     * @param i       index of the Schematic in the schematic placement list.
-     * @return get it out rotated and mirrored.
-     */
-    public static LitematicaSchematic blackMagicFuckery(LitematicaSchematic schemIn, int i) {
-        LitematicaSchematic tempSchem = schemIn.getCopy(LitematicaHelper.getRotation(i).ordinal() % 2 == 1);
-        for (int yCounter = 0; yCounter < schemIn.getY(); yCounter++) {
-            for (int zCounter = 0; zCounter < schemIn.getZ(); zCounter++) {
-                for (int xCounter = 0; xCounter < schemIn.getX(); xCounter++) {
-                    Vec3i xyzHolder = new Vec3i(xCounter, yCounter, zCounter);
-                    xyzHolder = LitematicaHelper.doMirroring(xyzHolder, schemIn.getX() - 1, schemIn.getZ() - 1, LitematicaHelper.getMirror(i));
-                    for (int turns = 0; turns < LitematicaHelper.getRotation(i).ordinal(); turns++) {
-                        if ((turns % 2) == 0) {
-                            xyzHolder = LitematicaHelper.rotate(xyzHolder, schemIn.getX() - 1, schemIn.getZ() - 1);
-                        } else {
-                            xyzHolder = LitematicaHelper.rotate(xyzHolder, schemIn.getZ() - 1, schemIn.getX() - 1);
-                        }
+    public static Tuple<IStaticSchematic, Vec3i> getSchematic(int i) {
+        SchematicPlacement placement = getPlacement(i);
+        int minX = Integer.MAX_VALUE;
+        int minY = Integer.MAX_VALUE;
+        int minZ = Integer.MAX_VALUE;
+        HashMap<Vec3i, StaticSchematic> subRegions = new HashMap<>();
+        Level schematicWorld = SchematicWorldHandler.getSchematicWorld();
+        for (Map.Entry<String, SubRegionPlacement> entry : placement.getEnabledRelativeSubRegionPlacements().entrySet()) {
+            SubRegionPlacement subPlacement = entry.getValue();
+            Vec3i pos = transform(subPlacement.getPos(), placement.getMirror(), placement.getRotation());
+            Vec3i size = placement.getSchematic().getAreaSize(entry.getKey());
+            size = transform(size, placement.getMirror(), placement.getRotation());
+            size = transform(size, subPlacement.getMirror(), subPlacement.getRotation());
+            int mx = Math.min(size.getX() + 1, 0);
+            int my = Math.min(size.getY() + 1, 0);
+            int mz = Math.min(size.getZ() + 1, 0);
+            minX = Math.min(minX, pos.getX() + mx);
+            minY = Math.min(minY, pos.getY() + my);
+            minZ = Math.min(minZ, pos.getZ() + mz);
+            BlockPos origin = placement.getOrigin().offset(pos).offset(mx, my, mz);
+            BlockState[][][] states = new BlockState[Math.abs(size.getX())][Math.abs(size.getZ())][Math.abs(size.getY())];
+            for (int x = 0; x < states.length; x++) {
+                for (int z = 0; z < states[x].length; z++) {
+                    for (int y = 0; y < states[x][z].length; y++) {
+                        states[x][z][y] = schematicWorld.getBlockState(origin.offset(x, y, z));
                     }
-                    BlockState state = schemIn.getDirect(xCounter, yCounter, zCounter);
-                    try {
-                        state = state.mirror(LitematicaHelper.getMirror(i)).rotate(LitematicaHelper.getRotation(i));
-                    } catch (NullPointerException e) {
-                        //nothing to worry about it's just a hole in the schematic.
-                    }
-                    tempSchem.setDirect(xyzHolder.getX(), xyzHolder.getY(), xyzHolder.getZ(), state);
                 }
             }
+            StaticSchematic schematic = new StaticSchematic(states);
+            subRegions.put(pos.offset(mx, my, mz), schematic);
         }
-        return tempSchem;
+        LitematicaPlacementSchematic composite = new LitematicaPlacementSchematic(placement.getName());
+        for (Map.Entry<Vec3i, StaticSchematic> entry : subRegions.entrySet()) {
+            Vec3i pos = entry.getKey().offset(-minX, -minY, -minZ);
+            composite.put(entry.getValue(), pos.getX(), pos.getY(), pos.getZ());
+        }
+        return new Tuple<>(composite, placement.getOrigin().offset(minX, minY, minZ));
     }
-}
+
+    private static class LitematicaPlacementSchematic extends CompositeSchematic implements IStaticSchematic {
+        private final String name;
+
+        public LitematicaPlacementSchematic(String name) {
+            super(0, 0, 0);
+            this.name = name;
+        }
+
+        @Override
+        public BlockState getDirect(int x, int y, int z) {
+            if (inSchematic(x, y, z, null)) {
+                return desiredState(x, y, z, null, Collections.emptyList());
+            }
+            return null;
+        }
+
+        @Override
+        public String toString() {
+            return name;
+        }
+    }
+}

src/schematica_api/java/fi/dy/masa/litematica/data/DataManager.java

@@ -20,14 +20,8 @@ package fi.dy.masa.litematica.data;
 import fi.dy.masa.litematica.schematic.placement.SchematicPlacementManager;
 
 public class DataManager {
-    public static final DataManager INSTANCE = new DataManager();
-    private final SchematicPlacementManager schematicPlacementManager = new SchematicPlacementManager();
-
-    private static DataManager getInstance() {
-        return INSTANCE;
-    }
 
     public static SchematicPlacementManager getSchematicPlacementManager() {
-        return getInstance().schematicPlacementManager;
+        throw new LinkageError();
     }
 }

src/schematica_api/java/fi/dy/masa/litematica/schematic/LitematicaSchematic.java

@@ -0,0 +1,27 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package fi.dy.masa.litematica.schematic;
+
+import net.minecraft.core.BlockPos;
+
+public class LitematicaSchematic {
+
+    public BlockPos getAreaSize(String name) {
+        throw new LinkageError();
+    }
+}

src/schematica_api/java/fi/dy/masa/litematica/schematic/placement/SchematicPlacement.java

@@ -17,19 +17,35 @@
 
 package fi.dy.masa.litematica.schematic.placement;
 
+import com.google.common.collect.ImmutableMap;
+import fi.dy.masa.litematica.schematic.LitematicaSchematic;
+import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.block.Mirror;
 import net.minecraft.world.level.block.Rotation;
 
-public class SchematicPlacement extends SchematicPlacementUnloaded {
-    private Rotation rotation;
-    private Mirror mirror;
+public class SchematicPlacement {
+
+    public String getName() {
+        throw new LinkageError();
+    }
+
+    public BlockPos getOrigin() {
+        throw new LinkageError();
+    }
 
     public Rotation getRotation() {
-        return this.rotation;
+        throw new LinkageError();
     }
 
     public Mirror getMirror() {
-        return this.mirror;
+        throw new LinkageError();
     }
 
+    public ImmutableMap<String, SubRegionPlacement> getEnabledRelativeSubRegionPlacements() {
+        throw new LinkageError();
+    }
+
+    public LitematicaSchematic getSchematic() {
+        throw new LinkageError();
+    }
 }

src/schematica_api/java/fi/dy/masa/litematica/schematic/placement/SchematicPlacementManager.java

@@ -17,15 +17,13 @@
 
 package fi.dy.masa.litematica.schematic.placement;
 
-import java.util.ArrayList;
 import java.util.List;
 
 public class SchematicPlacementManager {
-    private final List<SchematicPlacement> schematicPlacements = new ArrayList<>();
 
     //in case of a java.lang.NoSuchMethodError try change the name of this method to getAllSchematicPlacements()
     //there are inconsistencies in the litematica mod about the naming of this method
     public List<SchematicPlacement> getAllSchematicsPlacements() {
-        return schematicPlacements;
+        throw new LinkageError();
     }
 }

src/schematica_api/java/fi/dy/masa/litematica/schematic/placement/SubRegionPlacement.java

@@ -18,26 +18,20 @@
 package fi.dy.masa.litematica.schematic.placement;
 
 import net.minecraft.core.BlockPos;
+import net.minecraft.world.level.block.Mirror;
+import net.minecraft.world.level.block.Rotation;
 
-import javax.annotation.Nullable;
-import java.io.File;
+public class SubRegionPlacement {
 
-public class SchematicPlacementUnloaded {
-    protected String name = "?";
-    @Nullable
-    protected File schematicFile;
-    protected BlockPos origin = BlockPos.ZERO;
-
-    public String getName() {
-        return this.name;
+    public BlockPos getPos() {
+        throw new LinkageError();
     }
 
-    @Nullable
-    public File getSchematicFile() {
-        return this.schematicFile;
+    public Rotation getRotation() {
+        throw new LinkageError();
     }
 
-    public BlockPos getOrigin() {
-        return this.origin;
+    public Mirror getMirror() {
+        throw new LinkageError();
     }
 }

src/schematica_api/java/fi/dy/masa/litematica/world/SchematicWorldHandler.java

@@ -0,0 +1,25 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package fi.dy.masa.litematica.world;
+
+public class SchematicWorldHandler {
+
+    public static WorldSchematic getSchematicWorld() {
+        throw new LinkageError();
+    }
+}

src/schematica_api/java/fi/dy/masa/litematica/world/WorldSchematic.java

@@ -0,0 +1,27 @@
+/*
+ * This file is part of Baritone.
+ *
+ * Baritone is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Baritone is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Baritone.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package fi.dy.masa.litematica.world;
+
+import net.minecraft.world.level.Level;
+
+public abstract class WorldSchematic extends Level {
+    private WorldSchematic() {
+        super(null, null, null, null, false, false, 0, 0);
+        throw new LinkageError();
+    }
+}

tweaker/build.gradle

@@ -38,14 +38,15 @@ configurations {
 }
 
 dependencies {
-    implementation "org.spongepowered:mixin:0.8.5"
+    implementation "org.spongepowered:mixin:${project.mixin_version}"
 
     // for some reason mixin isn't including these...
-    implementation "org.ow2.asm:asm:9.3"
-    implementation "org.ow2.asm:asm-tree:9.3"
-    implementation "org.ow2.asm:asm-commons:9.3"
-    implementation "org.ow2.asm:asm-util:9.3"
-    implementation "org.ow2.asm:asm-analysis:9.3"
+    implementation "org.ow2.asm:asm:${project.asm_version}"
+    implementation "org.ow2.asm:asm-tree:${project.asm_version}"
+    implementation "org.ow2.asm:asm-commons:${project.asm_version}"
+    implementation "org.ow2.asm:asm-util:${project.asm_version}"
+    implementation "org.ow2.asm:asm-analysis:${project.asm_version}"
+
 
     implementation 'com.github.ImpactDevelopment:SimpleTweaker:1.2'
     implementation('net.minecraft:launchwrapper:of-2.3') {