Merge branch 'mc-1.19.x' into mc-1.20.x

2025-04-05 10:16:59 +00:00 · 2023-06-20 08:59:06 +01:00 · 2023-06-20 08:59:06 +01:00 · ebaf49508f
commit ebaf49508f
parent c45fc94752 c8523bf479
65 changed files with 1040 additions and 267 deletions
--- a/buildSrc/src/main/kotlin/cc-tweaked.java-convention.gradle.kts
+++ b/buildSrc/src/main/kotlin/cc-tweaked.java-convention.gradle.kts
@ -104,6 +104,7 @@ tasks.withType(JavaCompile::class.java).configureEach {

 tasks.processResources {
    exclude("**/*.license")
+    exclude(".cache")
 }

 tasks.withType(AbstractArchiveTask::class.java).configureEach {
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@ -57,7 +57,7 @@ fabric-loom = "1.1.10"
 forgeGradle = "5.1.+"
 githubRelease = "2.2.12"
 ideaExt = "1.1.6"
-illuaminate = "0.1.0-24-gdb28902"
+illuaminate = "0.1.0-28-ga7efd71"
 librarian = "1.+"
 minotaur = "2.+"
 mixinGradle = "0.7.+"
--- a/projects/common-api/src/main/java/dan200/computercraft/api/upgrades/UpgradeDataProvider.java
+++ b/projects/common-api/src/main/java/dan200/computercraft/api/upgrades/UpgradeDataProvider.java
@ -24,6 +24,7 @@ import org.apache.logging.log4j.Logger;

 import javax.annotation.Nullable;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@ -104,7 +105,7 @@ public abstract class UpgradeDataProvider<T extends UpgradeBase, R extends Upgra
    protected abstract void addUpgrades(Consumer<Upgrade<R>> addUpgrade);

    @Override
-    public final CompletableFuture<?> run(CachedOutput cache) {
+    public CompletableFuture<?> run(CachedOutput cache) {
        var base = output.getOutputFolder().resolve("data");

        Set<ResourceLocation> seen = new HashSet<>();
@ -127,7 +128,7 @@ public abstract class UpgradeDataProvider<T extends UpgradeBase, R extends Upgra
            }
        });

-        this.upgrades = upgrades;
+        this.upgrades = Collections.unmodifiableList(upgrades);
        return Util.sequenceFailFast(futures);
    }

--- a/projects/common/src/client/java/dan200/computercraft/client/gui/TurtleScreen.java
+++ b/projects/common/src/client/java/dan200/computercraft/client/gui/TurtleScreen.java
@ -25,9 +25,11 @@ public class TurtleScreen extends AbstractComputerScreen<TurtleMenu> {
    private static final ResourceLocation BACKGROUND_NORMAL = new ResourceLocation(ComputerCraftAPI.MOD_ID, "textures/gui/turtle_normal.png");
    private static final ResourceLocation BACKGROUND_ADVANCED = new ResourceLocation(ComputerCraftAPI.MOD_ID, "textures/gui/turtle_advanced.png");

-    private static final int TEX_WIDTH = 254;
+    private static final int TEX_WIDTH = 278;
    private static final int TEX_HEIGHT = 217;

+    private static final int FULL_TEX_SIZE = 512;
+
    public TurtleScreen(TurtleMenu container, Inventory player, Component title) {
        super(container, player, title, BORDER);

@ -44,15 +46,16 @@ public class TurtleScreen extends AbstractComputerScreen<TurtleMenu> {
    protected void renderBg(GuiGraphics graphics, float partialTicks, int mouseX, int mouseY) {
        var advanced = family == ComputerFamily.ADVANCED;
        var texture = advanced ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL;
-        graphics.blit(texture, leftPos + AbstractComputerMenu.SIDEBAR_WIDTH, topPos, 0, 0, TEX_WIDTH, TEX_HEIGHT);
+        graphics.blit(texture, leftPos + AbstractComputerMenu.SIDEBAR_WIDTH, topPos, 0, 0, 0, TEX_WIDTH, TEX_HEIGHT, FULL_TEX_SIZE, FULL_TEX_SIZE);

+        // Render selected slot
        var slot = getMenu().getSelectedSlot();
        if (slot >= 0) {
            var slotX = slot % 4;
            var slotY = slot / 4;
            graphics.blit(texture,
-                leftPos + TURTLE_START_X - 2 + slotX * 18, topPos + PLAYER_START_Y - 2 + slotY * 18,
-                0, 217, 24, 24
+                leftPos + TURTLE_START_X - 2 + slotX * 18, topPos + PLAYER_START_Y - 2 + slotY * 18, 0,
+                0, 217, 24, 24, FULL_TEX_SIZE, FULL_TEX_SIZE
            );
        }

--- a/projects/common/src/client/java/dan200/computercraft/client/model/turtle/ModelTransformer.java
+++ b/projects/common/src/client/java/dan200/computercraft/client/model/turtle/ModelTransformer.java
@ -0,0 +1,98 @@
+// SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+//
+// SPDX-License-Identifier: MPL-2.0
+
+package dan200.computercraft.client.model.turtle;
+
+import com.mojang.blaze3d.vertex.DefaultVertexFormat;
+import com.mojang.blaze3d.vertex.VertexFormat;
+import com.mojang.blaze3d.vertex.VertexFormatElement;
+import com.mojang.math.Transformation;
+import net.minecraft.client.renderer.block.model.BakedQuad;
+import net.minecraft.client.resources.model.BakedModel;
+import net.minecraft.core.Direction;
+import org.joml.Matrix4f;
+import org.joml.Vector4f;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Applies a {@link Transformation} (or rather a {@link Matrix4f}) to a list of {@link BakedQuad}s.
+ * <p>
+ * This does a little bit of magic compared with other system (i.e. Forge's {@code QuadTransformers}), as it needs to
+ * handle flipping models upside down.
+ * <p>
+ * This is typically used with a {@link BakedModel} subclass - see the loader-specific projects.
+ */
+public final class ModelTransformer {
+    public static final int[] ORDER = new int[]{ 3, 2, 1, 0 };
+    public static final int STRIDE = DefaultVertexFormat.BLOCK.getIntegerSize();
+    private static final int POS_OFFSET = findOffset(DefaultVertexFormat.BLOCK, DefaultVertexFormat.ELEMENT_POSITION);
+
+    private final Matrix4f transformation;
+    private final boolean invert;
+    private @Nullable TransformedQuads cache;
+
+    public ModelTransformer(Transformation transformation) {
+        this.transformation = transformation.getMatrix();
+        invert = transformation.getMatrix().determinant() < 0;
+    }
+
+    public List<BakedQuad> transform(List<BakedQuad> quads) {
+        if (quads.isEmpty()) return List.of();
+
+        // We do some basic caching here to avoid recomputing every frame. Most turtle models don't have culled faces,
+        // so it's not worth being smarter here.
+        var cache = this.cache;
+        if (cache != null && quads.equals(cache.original())) return cache.transformed();
+
+        List<BakedQuad> transformed = new ArrayList<>(quads.size());
+        for (var quad : quads) transformed.add(transformQuad(quad));
+        this.cache = new TransformedQuads(quads, transformed);
+        return transformed;
+    }
+
+    private BakedQuad transformQuad(BakedQuad quad) {
+        var inputData = quad.getVertices();
+        var outputData = new int[inputData.length];
+        for (var i = 0; i < 4; i++) {
+            var inStart = STRIDE * i;
+            // Reverse the order of the quads if we're inverting
+            var outStart = STRIDE * (invert ? ORDER[i] : i);
+            System.arraycopy(inputData, inStart, outputData, outStart, STRIDE);
+
+            // Apply the matrix to our position
+            var inPosStart = inStart + POS_OFFSET;
+            var outPosStart = outStart + POS_OFFSET;
+
+            var x = Float.intBitsToFloat(inputData[inPosStart]);
+            var y = Float.intBitsToFloat(inputData[inPosStart + 1]);
+            var z = Float.intBitsToFloat(inputData[inPosStart + 2]);
+
+            // Transform the position
+            var pos = new Vector4f(x, y, z, 1);
+            transformation.transformProject(pos);
+
+            outputData[outPosStart] = Float.floatToRawIntBits(pos.x());
+            outputData[outPosStart + 1] = Float.floatToRawIntBits(pos.y());
+            outputData[outPosStart + 2] = Float.floatToRawIntBits(pos.z());
+        }
+
+        var direction = Direction.rotate(transformation, quad.getDirection());
+        return new BakedQuad(outputData, quad.getTintIndex(), direction, quad.getSprite(), quad.isShade());
+    }
+
+    private record TransformedQuads(List<BakedQuad> original, List<BakedQuad> transformed) {
+    }
+
+    private static int findOffset(VertexFormat format, VertexFormatElement element) {
+        var offset = 0;
+        for (var other : format.getElements()) {
+            if (other == element) return offset / Integer.BYTES;
+            offset += element.getByteSize();
+        }
+        throw new IllegalArgumentException("Cannot find " + element + " in " + format);
+    }
+}
--- a/projects/common/src/client/java/dan200/computercraft/client/render/TurtleBlockEntityRenderer.java
+++ b/projects/common/src/client/java/dan200/computercraft/client/render/TurtleBlockEntityRenderer.java
@ -10,6 +10,7 @@ import com.mojang.math.Axis;
 import com.mojang.math.Transformation;
 import dan200.computercraft.api.ComputerCraftAPI;
 import dan200.computercraft.api.turtle.TurtleSide;
+import dan200.computercraft.client.model.turtle.ModelTransformer;
 import dan200.computercraft.client.platform.ClientPlatformHelper;
 import dan200.computercraft.client.turtle.TurtleUpgradeModellers;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
@ -30,6 +31,7 @@ import net.minecraft.resources.ResourceLocation;
 import net.minecraft.util.RandomSource;
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.HitResult;
+import org.joml.Vector4f;

 import javax.annotation.Nullable;
 import java.util.List;
@ -146,16 +148,30 @@ public class TurtleBlockEntityRenderer implements BlockEntityRenderer<TurtleBloc
        renderModel(transform, renderer, lightmapCoord, overlayLight, ClientPlatformHelper.get().getModel(modelManager, modelLocation), tints);
    }

+    /**
+     * Render a block model.
+     *
+     * @param transform     The current matrix stack.
+     * @param renderer      The buffer to write to.
+     * @param lightmapCoord The current lightmap coordinate.
+     * @param overlayLight  The overlay light.
+     * @param model         The model to render.
+     * @param tints         Tints for the quads, as an array of RGB values.
+     * @see net.minecraft.client.renderer.block.ModelBlockRenderer#renderModel
+     */
    private void renderModel(PoseStack transform, VertexConsumer renderer, int lightmapCoord, int overlayLight, BakedModel model, @Nullable int[] tints) {
-        random.setSeed(0);
-        renderQuads(transform, renderer, lightmapCoord, overlayLight, model.getQuads(null, null, random), tints);
        for (var facing : DirectionUtil.FACINGS) {
+            random.setSeed(42);
            renderQuads(transform, renderer, lightmapCoord, overlayLight, model.getQuads(null, facing, random), tints);
        }
+
+        random.setSeed(42);
+        renderQuads(transform, renderer, lightmapCoord, overlayLight, model.getQuads(null, null, random), tints);
    }

    private static void renderQuads(PoseStack transform, VertexConsumer buffer, int lightmapCoord, int overlayLight, List<BakedQuad> quads, @Nullable int[] tints) {
        var matrix = transform.last();
+        var inverted = matrix.pose().determinant() < 0;

        for (var bakedquad : quads) {
            var tint = -1;
@ -167,7 +183,50 @@ public class TurtleBlockEntityRenderer implements BlockEntityRenderer<TurtleBloc
            var r = (float) (tint >> 16 & 255) / 255.0F;
            var g = (float) (tint >> 8 & 255) / 255.0F;
            var b = (float) (tint & 255) / 255.0F;
-            buffer.putBulkData(matrix, bakedquad, r, g, b, lightmapCoord, overlayLight);
+            if (inverted) {
+                putBulkQuadInvert(buffer, matrix, bakedquad, r, g, b, lightmapCoord, overlayLight);
+            } else {
+                buffer.putBulkData(matrix, bakedquad, r, g, b, lightmapCoord, overlayLight);
+            }
+        }
+    }
+
+    /**
+     * A version of {@link VertexConsumer#putBulkData(PoseStack.Pose, BakedQuad, float, float, float, int, int)} for
+     * when the matrix is inverted.
+     *
+     * @param buffer        The buffer to draw to.
+     * @param pose          The current matrix stack.
+     * @param quad          The quad to draw.
+     * @param red           The red tint of this quad.
+     * @param green         The  green tint of this quad.
+     * @param blue          The blue tint of this quad.
+     * @param lightmapCoord The lightmap coordinate
+     * @param overlayLight  The overlay light.
+     */
+    private static void putBulkQuadInvert(VertexConsumer buffer, PoseStack.Pose pose, BakedQuad quad, float red, float green, float blue, int lightmapCoord, int overlayLight) {
+        var matrix = pose.pose();
+        // It's a little dubious to transform using this matrix rather than the normal matrix. This mirrors the logic in
+        // Direction.rotate (so not out of nowhere!), but is a little suspicious.
+        var dirNormal = quad.getDirection().getNormal();
+        var normal = matrix.transform(new Vector4f(dirNormal.getX(), dirNormal.getY(), dirNormal.getZ(), 0.0f)).normalize();
+
+        var vertices = quad.getVertices();
+        for (var vertex : ModelTransformer.ORDER) {
+            var i = vertex * ModelTransformer.STRIDE;
+
+            var x = Float.intBitsToFloat(vertices[i]);
+            var y = Float.intBitsToFloat(vertices[i + 1]);
+            var z = Float.intBitsToFloat(vertices[i + 2]);
+            var transformed = matrix.transform(new Vector4f(x, y, z, 1));
+
+            var u = Float.intBitsToFloat(vertices[i + 4]);
+            var v = Float.intBitsToFloat(vertices[i + 5]);
+            buffer.vertex(
+                transformed.x(), transformed.y(), transformed.z(),
+                red, green, blue, 1.0F, u, v, overlayLight, lightmapCoord,
+                normal.x(), normal.y(), normal.z()
+            );
        }
    }

--- a/projects/common/src/client/java/dan200/computercraft/data/client/ClientDataProviders.java
+++ b/projects/common/src/client/java/dan200/computercraft/data/client/ClientDataProviders.java
@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+//
+// SPDX-License-Identifier: MPL-2.0
+
+package dan200.computercraft.data.client;
+
+import dan200.computercraft.data.DataProviders;
+import dan200.computercraft.shared.turtle.inventory.UpgradeSlot;
+import net.minecraft.client.renderer.texture.atlas.SpriteSources;
+import net.minecraft.client.renderer.texture.atlas.sources.SingleFile;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.packs.PackType;
+
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * A version of {@link DataProviders} which relies on client-side classes.
+ * <p>
+ * This is called from {@link DataProviders#add(DataProviders.GeneratorSink)}.
+ */
+public final class ClientDataProviders {
+    private ClientDataProviders() {
+    }
+
+    public static void add(DataProviders.GeneratorSink generator) {
+        generator.addFromCodec("Block atlases", PackType.CLIENT_RESOURCES, "atlases", SpriteSources.FILE_CODEC, out -> {
+            out.accept(new ResourceLocation("blocks"), List.of(
+                new SingleFile(UpgradeSlot.LEFT_UPGRADE, Optional.empty()),
+                new SingleFile(UpgradeSlot.RIGHT_UPGRADE, Optional.empty())
+            ));
+        });
+    }
+}
--- a/projects/common/src/main/java/dan200/computercraft/data/BlockModelProvider.java
+++ b/projects/common/src/main/java/dan200/computercraft/data/BlockModelProvider.java
@ -37,6 +37,14 @@ import static net.minecraft.data.models.model.ModelLocationUtils.getModelLocatio
 import static net.minecraft.data.models.model.TextureMapping.getBlockTexture;

 class BlockModelProvider {
+    private static final TextureSlot CURSOR = TextureSlot.create("cursor");
+
+    private static final ModelTemplate COMPUTER_ON = new ModelTemplate(
+        Optional.of(new ResourceLocation(ComputerCraftAPI.MOD_ID, "block/computer_on")),
+        Optional.empty(),
+        TextureSlot.FRONT, TextureSlot.SIDE, TextureSlot.TOP, CURSOR
+    );
+
    private static final ModelTemplate MONITOR_BASE = new ModelTemplate(
        Optional.of(new ResourceLocation(ComputerCraftAPI.MOD_ID, "block/monitor_base")),
        Optional.empty(),
@ -142,11 +150,18 @@ class BlockModelProvider {
    private static void registerComputer(BlockModelGenerators generators, ComputerBlock<?> block) {
        generators.blockStateOutput.accept(MultiVariantGenerator.multiVariant(block)
            .with(createHorizontalFacingDispatch())
-            .with(createModelDispatch(ComputerBlock.STATE, state -> ModelTemplates.CUBE_ORIENTABLE.createWithSuffix(
-                block, "_" + state.getSerializedName(),
-                TextureMapping.orientableCube(block).put(TextureSlot.FRONT, getBlockTexture(block, "_front" + state.getTexture())),
-                generators.modelOutput
-            )))
+            .with(createModelDispatch(ComputerBlock.STATE, state -> switch (state) {
+                case OFF -> ModelTemplates.CUBE_ORIENTABLE.createWithSuffix(
+                    block, "_" + state.getSerializedName(),
+                    TextureMapping.orientableCube(block),
+                    generators.modelOutput
+                );
+                case ON, BLINKING -> COMPUTER_ON.createWithSuffix(
+                    block, "_" + state.getSerializedName(),
+                    TextureMapping.orientableCube(block).put(CURSOR, new ResourceLocation(ComputerCraftAPI.MOD_ID, "block/computer" + state.getTexture())),
+                    generators.modelOutput
+                );
+            }))
        );
        generators.delegateItemModel(block, getModelLocation(block, "_blinking"));
    }
--- a/projects/common/src/main/java/dan200/computercraft/data/DataProviders.java
+++ b/projects/common/src/main/java/dan200/computercraft/data/DataProviders.java
@ -4,16 +4,20 @@

 package dan200.computercraft.data;

+import com.mojang.serialization.Codec;
 import net.minecraft.data.DataProvider;
 import net.minecraft.data.PackOutput;
 import net.minecraft.data.loot.LootTableProvider.SubProviderEntry;
 import net.minecraft.data.models.BlockModelGenerators;
 import net.minecraft.data.models.ItemModelGenerators;
 import net.minecraft.data.tags.TagsProvider;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.packs.PackType;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.level.block.Block;

 import java.util.List;
+import java.util.function.BiConsumer;
 import java.util.function.Consumer;

 /**
@ -37,11 +41,22 @@ public final class DataProviders {
        generator.models(BlockModelProvider::addBlockModels, ItemModelProvider::addItemModels);

        generator.add(out -> new LanguageProvider(out, turtleUpgrades, pocketUpgrades));
+
+        // Unfortunately we rely on some client-side classes in this code. We just load in the client side data provider
+        // and invoke that.
+        try {
+            Class.forName("dan200.computercraft.data.client.ClientDataProviders")
+                .getMethod("add", GeneratorSink.class).invoke(null, generator);
+        } catch (ReflectiveOperationException e) {
+            throw new RuntimeException(e);
+        }
    }

-    interface GeneratorSink {
+    public interface GeneratorSink {
        <T extends DataProvider> T add(DataProvider.Factory<T> factory);

+        <T> void addFromCodec(String name, PackType type, String directory, Codec<T> codec, Consumer<BiConsumer<ResourceLocation, T>> output);
+
        void lootTable(List<SubProviderEntry> tables);

        TagsProvider<Block> blockTags(Consumer<TagProvider.TagConsumer<Block>> tags);
--- a/projects/common/src/main/java/dan200/computercraft/shared/container/BasicContainer.java
+++ b/projects/common/src/main/java/dan200/computercraft/shared/container/BasicContainer.java
@ -7,7 +7,6 @@ package dan200.computercraft.shared.container;
 import net.minecraft.core.NonNullList;
 import net.minecraft.world.Container;
 import net.minecraft.world.ContainerHelper;
-import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;

 /**
@ -16,24 +15,6 @@ import net.minecraft.world.item.ItemStack;
 public interface BasicContainer extends Container {
    NonNullList<ItemStack> getContents();

-    @Override
-    default int getMaxStackSize() {
-        return 64;
-    }
-
-    @Override
-    default void startOpen(Player player) {
-    }
-
-    @Override
-    default void stopOpen(Player player) {
-    }
-
-    @Override
-    default boolean canPlaceItem(int slot, ItemStack stack) {
-        return true;
-    }
-
    @Override
    default int getContainerSize() {
        return getContents().size();
--- a/projects/common/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java
+++ b/projects/common/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java
@ -190,7 +190,7 @@ public abstract class SpeakerPeripheral implements IPeripheral {
     * The speaker supports [all of Minecraft's noteblock instruments](https://minecraft.fandom.com/wiki/Note_Block#Instruments).
     * These are:
     * <p>
-     * {@code "harp"}, {@code "basedrum"}, {@code "snare"}, {@code "hat"}, {@code "bass"}, @code "flute"},
+     * {@code "harp"}, {@code "basedrum"}, {@code "snare"}, {@code "hat"}, {@code "bass"}, {@code "flute"},
     * {@code "bell"}, {@code "guitar"}, {@code "chime"}, {@code "xylophone"}, {@code "iron_xylophone"},
     * {@code "cow_bell"}, {@code "didgeridoo"}, {@code "bit"}, {@code "banjo"} and {@code "pling"}.
     *
--- a/projects/common/src/main/java/dan200/computercraft/shared/turtle/inventory/TurtleMenu.java
+++ b/projects/common/src/main/java/dan200/computercraft/shared/turtle/inventory/TurtleMenu.java
@ -4,6 +4,7 @@

 package dan200.computercraft.shared.turtle.inventory;

+import dan200.computercraft.api.turtle.TurtleSide;
 import dan200.computercraft.shared.ModRegistry;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.computer.core.ServerComputer;
@ -29,12 +30,13 @@ public final class TurtleMenu extends AbstractComputerMenu {
    public static final int PLAYER_START_Y = 134;
    public static final int TURTLE_START_X = SIDEBAR_WIDTH + 175;
    public static final int PLAYER_START_X = SIDEBAR_WIDTH + BORDER;
+    public static final int UPGRADE_START_X = SIDEBAR_WIDTH + 254;

    private final ContainerData data;

    private TurtleMenu(
        int id, Predicate<Player> canUse, ComputerFamily family, @Nullable ServerComputer computer, @Nullable ComputerContainerData menuData,
-        Inventory playerInventory, Container inventory, ContainerData data
+        Inventory playerInventory, Container inventory, Container turtleUpgrades, ContainerData data
    ) {
        super(ModRegistry.Menus.TURTLE.get(), id, canUse, family, computer, menuData);
        this.data = data;
@ -58,19 +60,24 @@ public final class TurtleMenu extends AbstractComputerMenu {
        for (var x = 0; x < 9; x++) {
            addSlot(new Slot(playerInventory, x, PLAYER_START_X + x * 18, PLAYER_START_Y + 3 * 18 + 5));
        }
+
+        // Turtle upgrades
+        addSlot(new UpgradeSlot(turtleUpgrades, TurtleSide.LEFT, 0, UPGRADE_START_X, PLAYER_START_Y + 1));
+        addSlot(new UpgradeSlot(turtleUpgrades, TurtleSide.RIGHT, 1, UPGRADE_START_X, PLAYER_START_Y + 1 + 18));
    }

    public static TurtleMenu ofBrain(int id, Inventory player, TurtleBrain turtle) {
        return new TurtleMenu(
            // Laziness in turtle.getOwner() is important here!
            id, p -> turtle.getOwner().stillValid(p), turtle.getFamily(), turtle.getOwner().createServerComputer(), null,
-            player, turtle.getInventory(), (SingleContainerData) turtle::getSelectedSlot
+            player, turtle.getInventory(), new UpgradeContainer(turtle), (SingleContainerData) turtle::getSelectedSlot
        );
    }

    public static TurtleMenu ofMenuData(int id, Inventory player, ComputerContainerData data) {
        return new TurtleMenu(
-            id, x -> true, data.family(), null, data, player, new SimpleContainer(TurtleBlockEntity.INVENTORY_SIZE), new SimpleContainerData(1)
+            id, x -> true, data.family(), null, data,
+            player, new SimpleContainer(TurtleBlockEntity.INVENTORY_SIZE), new SimpleContainer(2), new SimpleContainerData(1)
        );
    }

--- a/projects/common/src/main/java/dan200/computercraft/shared/turtle/inventory/UpgradeContainer.java
+++ b/projects/common/src/main/java/dan200/computercraft/shared/turtle/inventory/UpgradeContainer.java
@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+//
+// SPDX-License-Identifier: MPL-2.0
+
+package dan200.computercraft.shared.turtle.inventory;
+
+import dan200.computercraft.api.turtle.ITurtleAccess;
+import dan200.computercraft.api.turtle.ITurtleUpgrade;
+import dan200.computercraft.api.turtle.TurtleSide;
+import dan200.computercraft.impl.TurtleUpgrades;
+import net.minecraft.core.NonNullList;
+import net.minecraft.world.Container;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.ItemStack;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * A fake {@link Container} which exposes the {@linkplain ITurtleAccess#getUpgrade(TurtleSide) upgrades} a turtle has.
+ *
+ * @see TurtleMenu
+ * @see UpgradeSlot
+ */
+class UpgradeContainer implements Container {
+    private static final int SIZE = 2;
+
+    private final ITurtleAccess turtle;
+
+    private final List<ITurtleUpgrade> lastUpgrade = Arrays.asList(null, null);
+    private final NonNullList<ItemStack> lastStack = NonNullList.withSize(2, ItemStack.EMPTY);
+
+    UpgradeContainer(ITurtleAccess turtle) {
+        this.turtle = turtle;
+    }
+
+    private TurtleSide getSide(int slot) {
+        return switch (slot) {
+            case 0 -> TurtleSide.LEFT;
+            case 1 -> TurtleSide.RIGHT;
+            default -> throw new IllegalArgumentException("Invalid slot " + slot);
+        };
+    }
+
+    @Override
+    public ItemStack getItem(int slot) {
+        var upgrade = turtle.getUpgrade(getSide(slot));
+
+        // We don't want to return getCraftingItem directly here, as consumers may mutate the stack (they shouldn't!,
+        // but if they do it's a pain to track down). To avoid recreating the stack each tick, we maintain a simple
+        // cache.
+        if (upgrade == lastUpgrade.get(slot)) return lastStack.get(slot);
+
+        var stack = upgrade == null ? ItemStack.EMPTY : upgrade.getCraftingItem().copy();
+        lastUpgrade.set(slot, upgrade);
+        lastStack.set(slot, stack);
+        return stack;
+    }
+
+    @Override
+    public void setItem(int slot, ItemStack itemStack) {
+        turtle.setUpgrade(getSide(slot), TurtleUpgrades.instance().get(itemStack));
+    }
+
+    @Override
+    public int getContainerSize() {
+        return SIZE;
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return 1;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        for (var i = 0; i < SIZE; i++) {
+            if (!getItem(i).isEmpty()) return false;
+        }
+        return true;
+    }
+
+    @Override
+    public ItemStack removeItem(int slot, int count) {
+        return count <= 0 ? ItemStack.EMPTY : removeItemNoUpdate(slot);
+    }
+
+    @Override
+    public ItemStack removeItemNoUpdate(int slot) {
+        var current = getItem(slot);
+        setItem(slot, ItemStack.EMPTY);
+        return current;
+    }
+
+    @Override
+    public void setChanged() {
+    }
+
+    @Override
+    public boolean stillValid(Player player) {
+        return true;
+    }
+
+    @Override
+    public void clearContent() {
+        for (var i = 0; i < SIZE; i++) setItem(i, ItemStack.EMPTY);
+    }
+}
--- a/projects/common/src/main/java/dan200/computercraft/shared/turtle/inventory/UpgradeSlot.java
+++ b/projects/common/src/main/java/dan200/computercraft/shared/turtle/inventory/UpgradeSlot.java
@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+//
+// SPDX-License-Identifier: MPL-2.0
+
+package dan200.computercraft.shared.turtle.inventory;
+
+import com.mojang.datafixers.util.Pair;
+import dan200.computercraft.api.ComputerCraftAPI;
+import dan200.computercraft.api.turtle.TurtleSide;
+import dan200.computercraft.impl.TurtleUpgrades;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.Container;
+import net.minecraft.world.inventory.InventoryMenu;
+import net.minecraft.world.inventory.Slot;
+import net.minecraft.world.item.ItemStack;
+
+import javax.annotation.Nullable;
+
+/**
+ * A slot in the turtle UI which holds the turtle's current upgrade.
+ *
+ * @see TurtleMenu
+ */
+public class UpgradeSlot extends Slot {
+    public static final ResourceLocation LEFT_UPGRADE = new ResourceLocation(ComputerCraftAPI.MOD_ID, "gui/turtle_upgrade_left");
+    public static final ResourceLocation RIGHT_UPGRADE = new ResourceLocation(ComputerCraftAPI.MOD_ID, "gui/turtle_upgrade_right");
+
+    private final TurtleSide side;
+
+    public UpgradeSlot(Container container, TurtleSide side, int slot, int xPos, int yPos) {
+        super(container, slot, xPos, yPos);
+        this.side = side;
+    }
+
+    @Override
+    public boolean mayPlace(ItemStack stack) {
+        return TurtleUpgrades.instance().get(stack) != null;
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return 1;
+    }
+
+    @Nullable
+    @Override
+    public Pair<ResourceLocation, ResourceLocation> getNoItemIcon() {
+        return Pair.of(InventoryMenu.BLOCK_ATLAS, side == TurtleSide.LEFT ? LEFT_UPGRADE : RIGHT_UPGRADE);
+    }
+}
--- a/projects/common/src/main/resources/assets/computercraft/lang/ru_ru.json
+++ b/projects/common/src/main/resources/assets/computercraft/lang/ru_ru.json
@ -115,5 +115,67 @@
    "upgrade.minecraft.diamond_pickaxe.adjective": "Добывающая",
    "upgrade.minecraft.diamond_shovel.adjective": "Копающая",
    "upgrade.minecraft.diamond_sword.adjective": "Боевая",
-    "gui.computercraft.pocket_computer_overlay": "Карманный компьютер открыт. Чтобы закрыть, нажми ESC."
+    "gui.computercraft.pocket_computer_overlay": "Карманный компьютер открыт. Чтобы закрыть, нажми ESC.",
+    "gui.computercraft.config.command_require_creative.tooltip": "Требовать творческий режим и права оператора для взаимодействия с\nкомандными компьютерами. Это поведение по умолчанию для Командных блоков ванильной игры.",
+    "gui.computercraft.config.default_computer_settings.tooltip": "Разделенный запятыми список системных настроек по умолчанию на новых компьютерах.\nНапример: \"shell.autocomplete=false,lua.autocomplete=false,edit.autocomplete=false\"\nотключит всё автодополнение.",
+    "gui.computercraft.config.execution.computer_threads.tooltip": "Устанавливает количество потоков, на которых работают компьютеры. Большее число\nозначает, что больше компьютеров сможет работать одновременно, но может привести к лагу.\nОбратите внимание, что некоторые моды могут не работать с более чем одним потоком. Используйте с осторожностью.\nОграничение: > 1",
+    "gui.computercraft.config.execution.max_main_computer_time.tooltip": "Идеальный максимум времени, которое отведено компьютеру на выполнение задач, в миллисекундах.\nМы вполне возможно выйдем за этот лимит, так как невозможно предсказать сколько\nвремени будет затрачено на выполнение задач, это лишь верхний лимит среднего значения времени.\nОграничение: > 1",
+    "gui.computercraft.config.execution.max_main_global_time.tooltip": "Максимум времени, которое может быть потрачено на выполнение задач за один тик, в \nмиллисекундах. \nМы вполне возможно выйдем за этот лимит, так как невозможно предсказать сколько\nвремени будет затрачено на выполнение задач, это лишь верхний лимит среднего значения времени.\nОграничение: > 1",
+    "gui.computercraft.config.http.bandwidth.global_download": "Глобальный лимит на скачивание",
+    "gui.computercraft.config.http.bandwidth.global_download.tooltip": "Количество байтов, которое можно скачать за секунду. Все компьютеры делят эту пропускную способность. (байты в секунду)\nОграничение: > 1",
+    "gui.computercraft.config.http.bandwidth.global_upload.tooltip": "Количество байтов, которое можно загрузить за секунду. Все компьютеры делят эту пропускную способность. (байты в секунду)\nОграничение: > 1",
+    "tracking_field.computercraft.http_requests.name": "HTTP запросы",
+    "tracking_field.computercraft.turtle_ops.name": "Операции Черепашек",
+    "gui.computercraft.config.http.enabled.tooltip": "Включить API \"http\" на Компьютерах. Это также отключает программы \"pastebin\" и \"wget\", \nкоторые нужны многим пользователям. Рекомендуется оставить это включенным и использовать \nконфиг \"rules\" для более тонкой настройки.",
+    "gui.computercraft.config.http.max_websockets.tooltip": "Количество одновременно открытых веб-сокетов, которые может иметь компьютер. Установите на 0 для неограниченных веб-сокетов.\nОграничение: > 1",
+    "gui.computercraft.config.term_sizes": "Размер терминала",
+    "gui.computercraft.config.term_sizes.computer.height": "Высота терминала",
+    "gui.computercraft.config.term_sizes.monitor.height": "Максимальная высота монитора",
+    "gui.computercraft.config.term_sizes.monitor.width.tooltip": "Ограничение: 1 ~ 32",
+    "gui.computercraft.config.turtle.advanced_fuel_limit": "Лимит топлива Продвинутых Черепашек",
+    "gui.computercraft.config.turtle.need_fuel.tooltip": "Устанавливает, нуждаются ли Черепашки в топливе для передвижения.",
+    "gui.computercraft.terminal": "Компьютерный терминал",
+    "tracking_field.computercraft.computer_tasks.name": "Задачи",
+    "tracking_field.computercraft.server_tasks.name": "Серверные задачи",
+    "gui.computercraft.upload.no_response": "Перенос файлов",
+    "tracking_field.computercraft.avg": "%s (среднее)",
+    "gui.computercraft.config.command_require_creative": "Для использования командных компьютеров нужен творческий режим",
+    "gui.computercraft.config.computer_space_limit": "Лимит места на компьютерах (в байтах)",
+    "gui.computercraft.config.computer_space_limit.tooltip": "Лимит места на дисках компьютеров и черепашек, в байтах.",
+    "gui.computercraft.config.default_computer_settings": "Настройки Компьютера по умолчанию",
+    "gui.computercraft.config.disable_lua51_features": "Отключить функции Lua 5.1",
+    "gui.computercraft.config.disable_lua51_features.tooltip": "Поставьте, чтобы отключить функции из Lua 5.1, которые будут убраны в будущих\nобновлениях. Полезно для того, чтобы улучшить совместимость вперед ваших программ.",
+    "gui.computercraft.config.execution": "Выполнение",
+    "gui.computercraft.config.execution.computer_threads": "Потоки компьютера",
+    "gui.computercraft.config.execution.max_main_global_time": "Глобальный лимит времени на тик сервера",
+    "gui.computercraft.config.execution.tooltip": "Контролирует поведение выполнения задач компьютеров. Эта настройка преднезначается для \nтонкой настройки серверов, и в основном не должна быть изменена.",
+    "gui.computercraft.config.floppy_space_limit": "Лимит места на дискетах (байты)",
+    "gui.computercraft.config.floppy_space_limit.tooltip": "Лимит места для хранения информации на дискетах, в байтах.",
+    "gui.computercraft.config.http": "HTTP",
+    "gui.computercraft.config.http.bandwidth": "Пропускная способность",
+    "gui.computercraft.config.http.bandwidth.global_upload": "Глобальный лимит загрузки",
+    "gui.computercraft.config.http.bandwidth.tooltip": "Ограничивает пропускную способность, используемую компьютерами.",
+    "gui.computercraft.config.http.enabled": "Включить HTTP API",
+    "gui.computercraft.config.http.max_requests": "Максимум одновременных запросов",
+    "gui.computercraft.config.http.max_requests.tooltip": "Количество http-запросов, которые компьютер может сделать одновременно. Дополнительные запросы \nбудут поставлены в очередь, и отправлены когда существующие запросы будут выполнены. Установите на 0 для \nнеограниченных запросов.\nОграничение: > 0",
+    "gui.computercraft.config.http.max_websockets": "Максимум одновременных веб-сокетов",
+    "gui.computercraft.config.term_sizes.computer": "Компьютер",
+    "gui.computercraft.config.term_sizes.computer.height.tooltip": "Ограничение: 1 ~ 255",
+    "gui.computercraft.config.term_sizes.computer.tooltip": "Размер терминала на компьютерах.",
+    "gui.computercraft.config.term_sizes.computer.width": "Ширина терминала",
+    "gui.computercraft.config.term_sizes.computer.width.tooltip": "Ограничение: 1 ~ 255",
+    "gui.computercraft.config.term_sizes.monitor": "Монитор",
+    "gui.computercraft.config.term_sizes.monitor.height.tooltip": "Ограничение: 1 ~ 32",
+    "gui.computercraft.config.term_sizes.monitor.tooltip": "Максимальный размер мониторов (в блоках).",
+    "gui.computercraft.config.term_sizes.monitor.width": "Максимальная ширина мониторов",
+    "gui.computercraft.config.term_sizes.pocket_computer.height": "Высота терминала",
+    "gui.computercraft.config.term_sizes.pocket_computer.height.tooltip": "Ограничение: 1 ~ 255",
+    "gui.computercraft.config.term_sizes.pocket_computer.width": "Ширина терминала",
+    "gui.computercraft.config.term_sizes.pocket_computer.width.tooltip": "Ограничение: 1 ~ 255",
+    "gui.computercraft.config.turtle": "Черепашки",
+    "gui.computercraft.config.turtle.advanced_fuel_limit.tooltip": "Лимит топлива для Продвинутых Черепашек.\nОграничение: > 0",
+    "gui.computercraft.config.turtle.need_fuel": "Включить механику топлива",
+    "gui.computercraft.config.turtle.normal_fuel_limit": "Лимит топлива Черепашек",
+    "gui.computercraft.config.turtle.normal_fuel_limit.tooltip": "Лимит топлива для Черепашек.\nОграничение: > 0",
+    "gui.computercraft.config.turtle.tooltip": "Разные настройки, связанные с черепашками."
 }
--- a/projects/common/src/main/resources/assets/computercraft/models/block/computer_on.json
+++ b/projects/common/src/main/resources/assets/computercraft/models/block/computer_on.json
@ -0,0 +1,39 @@
+{
+    "parent": "minecraft:block/block",
+    "render_type": "cutout",
+    "textures": {
+        "particle": "#front"
+    },
+    "display": {
+        "firstperson_righthand": {
+            "rotation": [ 0, 135, 0 ],
+            "translation": [ 0, 0, 0 ],
+            "scale": [ 0.40, 0.40, 0.40 ]
+        }
+    },
+    "elements": [
+        {
+            "from": [ 0, 0, 0 ],
+            "to": [ 16, 16, 16 ],
+            "faces": {
+                "down":  { "texture": "#top",   "cullface": "down" },
+                "up":    { "texture": "#top",   "cullface": "up" },
+                "north": { "texture": "#front", "cullface": "north" },
+                "south": { "texture": "#side",  "cullface": "south" },
+                "west":  { "texture": "#side",  "cullface": "west" },
+                "east":  { "texture": "#side",  "cullface": "east" }
+            }
+        },
+        {
+            "from": [ 0, 0, 0 ],
+            "to": [ 16, 16, 16 ],
+            "faces": {
+                "north": {
+                    "texture": "#cursor",
+                    "cullface": "north",
+                    "forge_data": {"block_light": 15, "sky_light": 15}
+                }
+            }
+        }
+    ]
+}
--- a/projects/common/src/main/resources/assets/computercraft/models/block/computer_on.json.license
+++ b/projects/common/src/main/resources/assets/computercraft/models/block/computer_on.json.license
@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+
+SPDX-License-Identifier: MPL-2.0
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_advanced_front_blink.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_advanced_front_blink.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_advanced_front_on.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_advanced_front_on.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_blink.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_blink.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_advanced_front_blink.png.mcmeta
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_advanced_front_blink.png.mcmeta
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_command_front_blink.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_command_front_blink.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_command_front_blink.png.mcmeta
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_command_front_blink.png.mcmeta
@ -1,6 +0,0 @@
-{
-  "animation": {
-    "frametime": 8,
-    "frames": [ 0, 1 ]
-  }
-}
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_command_front_on.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_command_front_on.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_normal_front_blink.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_normal_front_blink.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_normal_front_blink.png.mcmeta
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_normal_front_blink.png.mcmeta
@ -1,6 +0,0 @@
-{
-  "animation": {
-    "frametime": 8,
-    "frames": [ 0, 1 ]
-  }
-}
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_normal_front_on.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_normal_front_on.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/block/computer_on.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/block/computer_on.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_advanced.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_advanced.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_normal.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_normal.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_left.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_left.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_left.png.license
+++ b/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_left.png.license
@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+
+SPDX-License-Identifier: MPL-2.0
--- a/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_right.png
+++ b/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_right.png
--- a/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_right.png.license
+++ b/projects/common/src/main/resources/assets/computercraft/textures/gui/turtle_upgrade_right.png.license
@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+
+SPDX-License-Identifier: MPL-2.0
--- a/projects/core/src/main/java/dan200/computercraft/core/apis/FSAPI.java
+++ b/projects/core/src/main/java/dan200/computercraft/core/apis/FSAPI.java
@ -443,28 +443,6 @@ public class FSAPI implements ILuaAPI {
        }
    }

-    /**
-     * Searches for files matching a string with wildcards.
-     * <p>
-     * This string is formatted like a normal path string, but can include any
-     * number of wildcards ({@code *}) to look for files matching anything.
-     * For example, <code>rom/&#42;/command*</code> will look for any path starting with
-     * {@code command} inside any subdirectory of {@code /rom}.
-     *
-     * @param path The wildcard-qualified path to search for.
-     * @return A list of paths that match the search string.
-     * @throws LuaException If the path doesn't exist.
-     * @cc.since 1.6
-     */
-    @LuaFunction
-    public final String[] find(String path) throws LuaException {
-        try (var ignored = environment.time(Metrics.FS_OPS)) {
-            return getFileSystem().find(path);
-        } catch (FileSystemException e) {
-            throw new LuaException(e.getMessage());
-        }
-    }
-
    /**
     * Returns the capacity of the drive the path is located on.
     *
--- a/projects/core/src/main/java/dan200/computercraft/core/filesystem/FileSystem.java
+++ b/projects/core/src/main/java/dan200/computercraft/core/filesystem/FileSystem.java
@ -166,47 +166,6 @@ public class FileSystem {
        return array;
    }

-    private void findIn(String dir, List<String> matches, Pattern wildPattern) throws FileSystemException {
-        var list = list(dir);
-        for (var entry : list) {
-            var entryPath = dir.isEmpty() ? entry : dir + "/" + entry;
-            if (wildPattern.matcher(entryPath).matches()) {
-                matches.add(entryPath);
-            }
-            if (isDir(entryPath)) {
-                findIn(entryPath, matches, wildPattern);
-            }
-        }
-    }
-
-    public synchronized String[] find(String wildPath) throws FileSystemException {
-        // Match all the files on the system
-        wildPath = sanitizePath(wildPath, true);
-
-        // If we don't have a wildcard at all just check the file exists
-        var starIndex = wildPath.indexOf('*');
-        if (starIndex == -1) {
-            return exists(wildPath) ? new String[]{ wildPath } : new String[0];
-        }
-
-        // Find the all non-wildcarded directories. For instance foo/bar/baz* -> foo/bar
-        var prevDir = wildPath.substring(0, starIndex).lastIndexOf('/');
-        var startDir = prevDir == -1 ? "" : wildPath.substring(0, prevDir);
-
-        // If this isn't a directory then just abort
-        if (!isDir(startDir)) return new String[0];
-
-        // Scan as normal, starting from this directory
-        var wildPattern = Pattern.compile("^\\Q" + wildPath.replaceAll("\\*", "\\\\E[^\\\\/]*\\\\Q") + "\\E$");
-        List<String> matches = new ArrayList<>();
-        findIn(startDir, matches, wildPattern);
-
-        // Return matches
-        var array = new String[matches.size()];
-        matches.toArray(array);
-        return array;
-    }
-
    public synchronized boolean exists(String path) throws FileSystemException {
        path = sanitizePath(path);
        var mount = getMount(path);
@ -400,21 +359,20 @@ public class FileSystem {

    private static final Pattern threeDotsPattern = Pattern.compile("^\\.{3,}$");

+    // IMPORTANT: Both arrays are sorted by ASCII value.
+    private static final char[] specialChars = new char[]{ '"', '*', ':', '<', '>', '?', '|' };
+    private static final char[] specialCharsAllowWildcards = new char[]{ '"', ':', '<', '>', '|' };
+
    public static String sanitizePath(String path, boolean allowWildcards) {
        // Allow windowsy slashes
        path = path.replace('\\', '/');

        // Clean the path or illegal characters.
-        final var specialChars = new char[]{
-            '"', ':', '<', '>', '?', '|', // Sorted by ascii value (important)
-        };
-
        var cleanName = new StringBuilder();
+        var allowedChars = allowWildcards ? specialCharsAllowWildcards : specialChars;
        for (var i = 0; i < path.length(); i++) {
            var c = path.charAt(i);
-            if (c >= 32 && Arrays.binarySearch(specialChars, c) < 0 && (allowWildcards || c != '*')) {
-                cleanName.append(c);
-            }
+            if (c >= 32 && Arrays.binarySearch(allowedChars, c) < 0) cleanName.append(c);
        }
        path = cleanName.toString();

--- a/projects/core/src/main/resources/data/computercraft/lua/rom/apis/fs.lua
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/apis/fs.lua
@ -133,6 +133,93 @@ function fs.complete(sPath, sLocation, bIncludeFiles, bIncludeDirs)
    return {}
 end

+local function find_aux(path, parts, i, out)
+    local part = parts[i]
+    if not part then
+        -- If we're at the end of the pattern, ensure our path exists and append it.
+        if fs.exists(path) then out[#out + 1] = path end
+    elseif part.exact then
+        -- If we're an exact match, just recurse into this directory.
+        return find_aux(fs.combine(path, part.contents), parts, i + 1, out)
+    else
+        -- Otherwise we're a pattern. Check we're a directory, then recurse into each
+        -- matching file.
+        if not fs.isDir(path) then return end
+
+        local files = fs.list(path)
+        for j = 1, #files do
+            local file = files[j]
+            if file:find(part.contents) then find_aux(fs.combine(path, file), parts, i + 1, out) end
+        end
+    end
+end
+
+local find_escape = {
+    -- Escape standard Lua pattern characters
+    ["^"] = "%^", ["$"] = "%$", ["("] = "%(", [")"] = "%)", ["%"] = "%%",
+    ["."] = "%.", ["["] = "%[", ["]"] = "%]", ["+"] = "%+", ["-"] = "%-",
+    -- Aside from our wildcards.
+    ["*"] = ".*",
+    ["?"] = ".",
+}
+
+--[[- Searches for files matching a string with wildcards.
+
+This string looks like a normal path string, but can include wildcards, which
+can match multiple paths:
+
+ - "?" matches any single character in a file name.
+ - "*" matches any number of characters.
+
+For example, `rom/*/command*` will look for any path starting with `command`
+inside any subdirectory of `/rom`.
+
+Note that these wildcards match a single segment of the path. For instance
+`rom/*.lua` will include `rom/startup.lua` but _not_ include `rom/programs/list.lua`.
+
+@tparam string path The wildcard-qualified path to search for.
+@treturn { string... } A list of paths that match the search string.
+@throws If the supplied path was invalid.
+@since 1.6
+@changed 1.106.0 Added support for the `?` wildcard.
+
+@usage List all Markdown files in the help folder
+
+    fs.find("rom/help/*.md")
+]]
+function fs.find(pattern)
+    expect(1, pattern, "string")
+
+    pattern = fs.combine(pattern) -- Normalise the path, removing ".."s.
+
+    -- If the pattern is trying to search outside the computer root, just abort.
+    -- This will fail later on anyway.
+    if pattern == ".." or pattern:sub(1, 3) == "../" then
+        error("/" .. pattern .. ": Invalid Path", 2)
+    end
+
+    -- If we've no wildcards, just check the file exists.
+    if not pattern:find("[*?]") then
+        if fs.exists(pattern) then return { pattern } else return {} end
+    end
+
+    local parts = {}
+    for part in pattern:gmatch("[^/]+") do
+        if part:find("[*?]") then
+            parts[#parts + 1] = {
+                exact = false,
+                contents = "^" .. part:gsub(".", find_escape) .. "$",
+            }
+        else
+            parts[#parts + 1] = { exact = true, contents = part }
+        end
+    end
+
+    local out = {}
+    find_aux("", parts, 1, out)
+    return out
+end
+
 --- Returns true if a path is mounted to the parent filesystem.
 --
 -- The root filesystem "/" is considered a mount, along with disk folders and
--- a/projects/core/src/main/resources/data/computercraft/lua/rom/apis/textutils.lua
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/apis/textutils.lua
@ -424,12 +424,31 @@ do
        if map[c] == nil then map[c] = hexify(c) end
    end

-    serializeJSONString = function(s)
-        return ('"%s"'):format(s:gsub("[\0-\x1f\"\\]", map):gsub("[\x7f-\xff]", hexify))
+    serializeJSONString = function(s, options)
+        if options and options.unicode_strings and s:find("[\x80-\xff]") then
+            local retval = '"'
+            for _, code in utf8.codes(s) do
+                if code > 0xFFFF then
+                    -- Encode the codepoint as a UTF-16 surrogate pair
+                    code = code - 0x10000
+                    local high, low = bit32.extract(code, 10, 10) + 0xD800, bit32.extract(code, 0, 10) + 0xDC00
+                    retval = retval .. ("\\u%04X\\u%04X"):format(high, low)
+                elseif code <= 0x5C and map[string.char(code)] then -- 0x5C = `\`, don't run `string.char` if we don't need to
+                    retval = retval .. map[string.char(code)]
+                elseif code < 0x20 or code >= 0x7F then
+                    retval = retval .. ("\\u%04X"):format(code)
+                else
+                    retval = retval .. string.char(code)
+                end
+            end
+            return retval .. '"'
+        else
+            return ('"%s"'):format(s:gsub("[\0-\x1f\"\\]", map):gsub("[\x7f-\xff]", hexify))
+        end
    end
 end

-local function serializeJSONImpl(t, tTracking, bNBTStyle)
+local function serializeJSONImpl(t, tTracking, options)
    local sType = type(t)
    if t == empty_json_array then return "[]"
    elseif t == json_null then return "null"
@ -450,13 +469,14 @@ local function serializeJSONImpl(t, tTracking, bNBTStyle)
            local nObjectSize = 0
            local nArraySize = 0
            local largestArrayIndex = 0
+            local bNBTStyle = options and options.nbt_style
            for k, v in pairs(t) do
                if type(k) == "string" then
                    local sEntry
                    if bNBTStyle then
-                        sEntry = tostring(k) .. ":" .. serializeJSONImpl(v, tTracking, bNBTStyle)
+                        sEntry = tostring(k) .. ":" .. serializeJSONImpl(v, tTracking, options)
                    else
-                        sEntry = serializeJSONString(k) .. ":" .. serializeJSONImpl(v, tTracking, bNBTStyle)
+                        sEntry = serializeJSONString(k, options) .. ":" .. serializeJSONImpl(v, tTracking, options)
                    end
                    if nObjectSize == 0 then
                        sObjectResult = sObjectResult .. sEntry
@ -473,7 +493,7 @@ local function serializeJSONImpl(t, tTracking, bNBTStyle)
                if t[k] == nil then --if the array is nil at index k the value is "null" as to keep the unused indexes in between used ones.
                    sEntry = "null"
                else -- if the array index does not point to a nil we serialise it's content.
-                    sEntry = serializeJSONImpl(t[k], tTracking, bNBTStyle)
+                    sEntry = serializeJSONImpl(t[k], tTracking, options)
                end
                if nArraySize == 0 then
                    sArrayResult = sArrayResult .. sEntry
@ -492,7 +512,7 @@ local function serializeJSONImpl(t, tTracking, bNBTStyle)
        end

    elseif sType == "string" then
-        return serializeJSONString(t)
+        return serializeJSONString(t, options)

    elseif sType == "number" or sType == "boolean" then
        return tostring(t)
@ -813,32 +833,57 @@ end

 unserialise = unserialize -- GB version

--- Returns a JSON representation of the given data.
--
-- This function attempts to guess whether a table is a JSON array or
-- object. However, empty tables are assumed to be empty objects - use
-- @{textutils.empty_json_array} to mark an empty array.
--
-- This is largely intended for interacting with various functions from the
-- @{commands} API, though may also be used in making @{http} requests.
--
-- @param t The value to serialise. Like @{textutils.serialise}, this should not
-- contain recursive tables or functions.
-- @tparam[opt] boolean bNBTStyle Whether to produce NBT-style JSON (non-quoted keys)
-- instead of standard JSON.
-- @treturn string The JSON representation of the input.
-- @throws If the object contains a value which cannot be
-- serialised. This includes functions and tables which appear multiple
-- times.
-- @usage textutils.serialiseJSON({ values = { 1, "2", true } })
-- @since 1.7
-- @see textutils.json_null Use to serialise a JSON `null` value.
-- @see textutils.empty_json_array Use to serialise a JSON empty array.
-function serializeJSON(t, bNBTStyle)
+--[[- Returns a JSON representation of the given data.
+
+This function attempts to guess whether a table is a JSON array or
+object. However, empty tables are assumed to be empty objects - use
+@{textutils.empty_json_array} to mark an empty array.
+
+This is largely intended for interacting with various functions from the
+@{commands} API, though may also be used in making @{http} requests.
+
+@param[1] t The value to serialise. Like @{textutils.serialise}, this should not
+contain recursive tables or functions.
+@tparam[1,opt] { nbt_style? = boolean, unicode_strings? = boolean } options Options for serialisation.
+- `nbt_style`: Whether to produce NBT-style JSON (non-quoted keys) instead of standard JSON.
+- `unicode_strings`: Whether to treat strings as containing UTF-8 characters instead of
+   using the default 8-bit character set.
+
+@param[2] t The value to serialise. Like @{textutils.serialise}, this should not
+contain recursive tables or functions.
+@tparam[2] boolean bNBTStyle Whether to produce NBT-style JSON (non-quoted keys)
+instead of standard JSON.
+
+@treturn string The JSON representation of the input.
+@throws If the object contains a value which cannot be serialised. This includes
+functions and tables which appear multiple times.
+
+@usage Serialise a simple object
+
+    textutils.serialiseJSON({ values = { 1, "2", true } })
+
+@usage Serialise an object to a NBT-style string
+
+    textutils.serialiseJSON({ values = { 1, "2", true } }, { nbt_style = true })
+
+@since 1.7
+@changed 1.106.0 Added `options` overload and `unicode_strings` option.
+
+@see textutils.json_null Use to serialise a JSON `null` value.
+@see textutils.empty_json_array Use to serialise a JSON empty array.
+]]
+function serializeJSON(t, options)
    expect(1, t, "table", "string", "number", "boolean")
-    expect(2, bNBTStyle, "boolean", "nil")
+    expect(2, options, "table", "boolean", "nil")
+    if type(options) == "boolean" then
+        options = { nbt_style = options }
+    elseif type(options) == "table" then
+        field(options, "nbt_style", "boolean", "nil")
+        field(options, "unicode_strings", "boolean", "nil")
+    end
+
    local tTracking = {}
-    return serializeJSONImpl(t, tTracking, bNBTStyle or false)
+    return serializeJSONImpl(t, tTracking, options)
 end

 serialiseJSON = serializeJSON -- GB version
--- a/projects/core/src/main/resources/data/computercraft/lua/rom/help/changelog.md
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/help/changelog.md
@ -7,7 +7,7 @@
 * Java methods now coerce values to strings consistently with Lua.
 * Add custom timeout support to the HTTP API.
 * Support custom proxies for HTTP requests (Lemmmy).
-* The `speaker` program now errors when playing HTTP files.
+* The `speaker` program now errors when playing HTML files.
 * `edit` now shows an error message when editing read-only files.
 * Update Ukranian translation (SirEdvin).

--- a/projects/core/src/main/resources/data/computercraft/lua/rom/help/whatsnew.md
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/help/whatsnew.md
@ -7,7 +7,7 @@ New features in CC: Tweaked 1.105.0
 * Java methods now coerce values to strings consistently with Lua.
 * Add custom timeout support to the HTTP API.
 * Support custom proxies for HTTP requests (Lemmmy).
-* The `speaker` program now errors when playing HTTP files.
+* The `speaker` program now errors when playing HTML files.
 * `edit` now shows an error message when editing read-only files.
 * Update Ukranian translation (SirEdvin).

--- a/projects/core/src/main/resources/data/computercraft/lua/rom/modules/main/cc/image/nft.lua
+++ b/projects/core/src/main/resources/data/computercraft/lua/rom/modules/main/cc/image/nft.lua
@ -2,7 +2,7 @@
 --
 -- SPDX-License-Identifier: MPL-2.0

--- Read and draw nbt ("Nitrogen Fingers Text") images.
+--- Read and draw nft ("Nitrogen Fingers Text") images.
 --
 -- nft ("Nitrogen Fingers Text") is a file format for drawing basic images.
 -- Unlike the images that @{paintutils.parseImage} uses, nft supports coloured
--- a/projects/core/src/test/resources/test-rom/spec/apis/fs_spec.lua
+++ b/projects/core/src/test/resources/test-rom/spec/apis/fs_spec.lua
@ -87,6 +87,53 @@ describe("The fs library", function()
        end)
    end)

+    describe("fs.find", function()
+        it("fails on invalid paths", function()
+            expect.error(fs.find, ".."):eq("/..: Invalid Path")
+            expect.error(fs.find, "../foo/bar"):eq("/../foo/bar: Invalid Path")
+        end)
+
+        it("returns nothing on non-existent files", function()
+            expect(fs.find("no/such/file")):same {}
+            expect(fs.find("no/such/*")):same {}
+            expect(fs.find("no/*/file")):same {}
+        end)
+
+        it("returns a single file", function()
+            expect(fs.find("rom")):same { "rom" }
+            expect(fs.find("rom/motd.txt")):same { "rom/motd.txt" }
+        end)
+
+        it("supports the '*' wildcard", function()
+            expect(fs.find("rom/*")):same {
+                "rom/apis",
+                "rom/autorun",
+                "rom/help",
+                "rom/modules",
+                "rom/motd.txt",
+                "rom/programs",
+                "rom/startup.lua",
+            }
+            expect(fs.find("rom/*/command")):same {
+                "rom/apis/command",
+                "rom/modules/command",
+                "rom/programs/command",
+            }
+
+            expect(fs.find("rom/*/lua*")):same {
+                "rom/help/lua.txt",
+                "rom/programs/lua.lua",
+            }
+        end)
+
+        it("supports the '?' wildcard", function()
+            expect(fs.find("rom/programs/mo??.lua")):same {
+                "rom/programs/motd.lua",
+                "rom/programs/move.lua",
+            }
+        end)
+    end)
+
    describe("fs.combine", function()
        it("removes . and ..", function()
            expect(fs.combine("./a/b")):eq("a/b")
--- a/projects/core/src/test/resources/test-rom/spec/apis/textutils_spec.lua
+++ b/projects/core/src/test/resources/test-rom/spec/apis/textutils_spec.lua
@ -143,8 +143,10 @@ describe("The textutils library", function()
            textutils.serialiseJSON({})
            textutils.serialiseJSON(false)
            textutils.serialiseJSON("", true)
+            textutils.serializeJSON("", {})
+            textutils.serializeJSON(0, { nbt_style = true, unicode_strings = true })
            expect.error(textutils.serialiseJSON, nil):eq("bad argument #1 (table, string, number or boolean expected, got nil)")
-            expect.error(textutils.serialiseJSON, "", 1):eq("bad argument #2 (boolean expected, got number)")
+            expect.error(textutils.serialiseJSON, "", 1):eq("bad argument #2 (table or boolean expected, got number)")
        end)

        it("serializes empty arrays", function()
@ -174,6 +176,17 @@ describe("The textutils library", function()
            expect(textutils.serializeJSON({ 5, "test", nil, nil, textutils.json_null })):eq('[5,"test",null,null,null]')
            expect(textutils.serializeJSON({ nil, nil, nil, nil, "text" })):eq('[null,null,null,null,"text"]')
        end)
+
+        it("serializes NBT style", function()
+            expect(textutils.serializeJSON({ test = 2 }, { nbt_style = true })):eq('{test:2}')
+            expect(textutils.serializeJSON({ test = 2 }, true)):eq('{test:2}') -- old style
+        end)
+
+        it("serializes Unicode strings", function()
+            expect(textutils.serializeJSON("\u{3053}\u{3093}\u{306B}\u{3061}\u{306F}", { unicode_strings = true })):eq([["\u3053\u3093\u306B\u3061\u306F"]])
+            expect(textutils.serializeJSON("\u{1f62f}", { unicode_strings = true })):eq([["\uD83D\uDE2F"]])
+            expect(textutils.serializeJSON("\\\"\u{00ff}\n\"", { unicode_strings = true })):eq('"\\\\\\"\\u00FF\\n\\""')
+        end)
    end)

    describe("textutils.unserializeJSON", function()
--- a/projects/fabric/build.gradle.kts
+++ b/projects/fabric/build.gradle.kts
@ -122,7 +122,7 @@ loom {

        register("data") {
            configName = "Datagen"
-            server()
+            client()

            runDir("run/dataGen")
            property("cct.pretty-json")
@ -168,7 +168,6 @@ tasks.processResources {
    filesMatching("fabric.mod.json") {
        expand(mapOf("version" to modVersion))
    }
-    exclude(".cache")
 }

 tasks.jar {
--- a/projects/fabric/src/client/java/dan200/computercraft/client/ComputerCraftClient.java
+++ b/projects/fabric/src/client/java/dan200/computercraft/client/ComputerCraftClient.java
@ -4,6 +4,7 @@

 package dan200.computercraft.client;

+import dan200.computercraft.client.model.EmissiveComputerModel;
 import dan200.computercraft.client.model.turtle.TurtleModelLoader;
 import dan200.computercraft.shared.ModRegistry;
 import dan200.computercraft.shared.network.client.ClientNetworkContext;
@ -35,9 +36,12 @@ public class ComputerCraftClient {
        ClientRegistry.registerItemColours(ColorProviderRegistry.ITEM::register);
        ClientRegistry.registerMainThread();

-
        ModelLoadingRegistry.INSTANCE.registerModelProvider((manager, out) -> ClientRegistry.registerExtraModels(out));
        ModelLoadingRegistry.INSTANCE.registerResourceProvider(loader -> (path, ctx) -> TurtleModelLoader.load(loader, path));
+        ModelLoadingRegistry.INSTANCE.registerResourceProvider(loader -> (path, ctx) -> EmissiveComputerModel.load(loader, path));
+        BlockRenderLayerMap.INSTANCE.putBlock(ModRegistry.Blocks.COMPUTER_NORMAL.get(), RenderType.cutout());
+        BlockRenderLayerMap.INSTANCE.putBlock(ModRegistry.Blocks.COMPUTER_COMMAND.get(), RenderType.cutout());
+        BlockRenderLayerMap.INSTANCE.putBlock(ModRegistry.Blocks.COMPUTER_ADVANCED.get(), RenderType.cutout());
        BlockRenderLayerMap.INSTANCE.putBlock(ModRegistry.Blocks.MONITOR_NORMAL.get(), RenderType.cutout());
        BlockRenderLayerMap.INSTANCE.putBlock(ModRegistry.Blocks.MONITOR_ADVANCED.get(), RenderType.cutout());

--- a/projects/fabric/src/client/java/dan200/computercraft/client/model/EmissiveComputerModel.java
+++ b/projects/fabric/src/client/java/dan200/computercraft/client/model/EmissiveComputerModel.java
@ -0,0 +1,172 @@
+// SPDX-FileCopyrightText: 2023 The CC: Tweaked Developers
+//
+// SPDX-License-Identifier: MPL-2.0
+
+package dan200.computercraft.client.model;
+
+import com.google.gson.JsonObject;
+import com.mojang.datafixers.util.Either;
+import dan200.computercraft.api.ComputerCraftAPI;
+import net.fabricmc.fabric.api.client.model.ModelProviderException;
+import net.fabricmc.fabric.api.client.model.ModelResourceProvider;
+import net.fabricmc.fabric.api.renderer.v1.RendererAccess;
+import net.fabricmc.fabric.api.renderer.v1.material.RenderMaterial;
+import net.fabricmc.fabric.api.renderer.v1.model.FabricBakedModel;
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+import net.fabricmc.fabric.api.renderer.v1.model.ModelHelper;
+import net.fabricmc.fabric.api.renderer.v1.render.RenderContext;
+import net.minecraft.client.renderer.block.model.BlockModel;
+import net.minecraft.client.renderer.block.model.ItemTransforms;
+import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import net.minecraft.client.resources.model.*;
+import net.minecraft.core.BlockPos;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.packs.resources.ResourceManager;
+import net.minecraft.util.GsonHelper;
+import net.minecraft.util.RandomSource;
+import net.minecraft.world.inventory.InventoryMenu;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.BlockAndTintGetter;
+import net.minecraft.world.level.block.state.BlockState;
+
+import javax.annotation.Nullable;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+/**
+ * Wraps a computer's {@link BlockModel}/{@link BakedModel} to render the computer's cursor as an emissive quad.
+ * <p>
+ * While Fabric has a quite advanced rendering extension API (including support for custom materials), but unlike Forge
+ * it doesn't expose this in the model JSON (though externals mods like <a href="https://github.com/vram-guild/json-model-extensions/">JMX</a>
+ * do handle this).
+ * <p>
+ * Instead, we support emissive quads by injecting a custom {@linkplain ModelResourceProvider model loader/provider}
+ * which targets a hard-coded list of computer models, and wraps the returned model in a custom
+ * {@linkplain FabricBakedModel} implementation which renders specific quads as emissive.
+ * <p>
+ * See also the <code>assets/computercraft/models/block/computer_on.json</code> model, which is the base for all
+ * emissive computer models.
+ */
+public final class EmissiveComputerModel {
+    private static final Set<String> MODELS = Set.of(
+        "item/computer_advanced",
+        "block/computer_advanced_on",
+        "block/computer_advanced_blinking",
+        "item/computer_command",
+        "block/computer_command_on",
+        "block/computer_command_blinking",
+        "item/computer_normal",
+        "block/computer_normal_on",
+        "block/computer_normal_blinking"
+    );
+
+    private EmissiveComputerModel() {
+    }
+
+    public static @Nullable UnbakedModel load(ResourceManager resources, ResourceLocation path) throws ModelProviderException {
+        if (!path.getNamespace().equals(ComputerCraftAPI.MOD_ID) || !MODELS.contains(path.getPath())) return null;
+
+        JsonObject json;
+        try (var reader = resources.openAsReader(new ResourceLocation(path.getNamespace(), "models/" + path.getPath() + ".json"))) {
+            json = GsonHelper.parse(reader).getAsJsonObject();
+        } catch (IOException e) {
+            throw new ModelProviderException("Failed loading model " + path, e);
+        }
+
+        // Parse a subset of the model JSON
+        var parent = new ResourceLocation(GsonHelper.getAsString(json, "parent"));
+
+        Map<String, Either<Material, String>> textures = new HashMap<>();
+        if (json.has("textures")) {
+            var jsonObject = GsonHelper.getAsJsonObject(json, "textures");
+
+            for (var entry : jsonObject.entrySet()) {
+                var texture = entry.getValue().getAsString();
+                textures.put(entry.getKey(), texture.startsWith("#")
+                    ? Either.right(texture.substring(1))
+                    : Either.left(new Material(InventoryMenu.BLOCK_ATLAS, new ResourceLocation(texture)))
+                );
+            }
+        }
+
+        return new Unbaked(parent, textures);
+    }
+
+    /**
+     * An {@link UnbakedModel} which wraps the returned model using {@link Baked}.
+     * <p>
+     * This subclasses {@link BlockModel} to allow using these models as a parent of other models.
+     */
+    private static final class Unbaked extends BlockModel {
+        Unbaked(ResourceLocation parent, Map<String, Either<Material, String>> materials) {
+            super(parent, List.of(), materials, null, null, ItemTransforms.NO_TRANSFORMS, List.of());
+        }
+
+        @Override
+        public BakedModel bake(ModelBaker baker, Function<Material, TextureAtlasSprite> spriteGetter, ModelState state, ResourceLocation location) {
+            var baked = super.bake(baker, spriteGetter, state, location);
+            if (!hasTexture("cursor")) return baked;
+
+            var render = RendererAccess.INSTANCE.getRenderer();
+            if (render == null) return baked;
+
+            return new Baked(
+                baked,
+                spriteGetter.apply(getMaterial("cursor")),
+                render.materialFinder().find(),
+                render.materialFinder().emissive(0, true).find()
+            );
+        }
+    }
+
+    /**
+     * A {@link FabricBakedModel} which renders quads using the {@code "cursor"} texture as emissive.
+     */
+    private static final class Baked extends ForwardingBakedModel {
+        private final TextureAtlasSprite cursor;
+        private final RenderMaterial defaultMaterial;
+        private final RenderMaterial emissiveMaterial;
+
+        Baked(BakedModel wrapped, TextureAtlasSprite cursor, RenderMaterial defaultMaterial, RenderMaterial emissiveMaterial) {
+            this.wrapped = wrapped;
+            this.cursor = cursor;
+            this.defaultMaterial = defaultMaterial;
+            this.emissiveMaterial = emissiveMaterial;
+        }
+
+        @Override
+        public boolean isVanillaAdapter() {
+            return false;
+        }
+
+        @Override
+        public void emitBlockQuads(BlockAndTintGetter blockView, BlockState state, BlockPos pos, Supplier<RandomSource> randomSupplier, RenderContext context) {
+            emitQuads(context, state, randomSupplier.get());
+        }
+
+        @Override
+        public void emitItemQuads(ItemStack stack, Supplier<RandomSource> randomSupplier, RenderContext context) {
+            emitQuads(context, null, randomSupplier.get());
+        }
+
+        private void emitQuads(RenderContext context, @Nullable BlockState state, RandomSource random) {
+            var emitter = context.getEmitter();
+            for (var faceIdx = 0; faceIdx <= ModelHelper.NULL_FACE_ID; faceIdx++) {
+                var cullFace = ModelHelper.faceFromIndex(faceIdx);
+                var quads = wrapped.getQuads(state, cullFace, random);
+
+                var count = quads.size();
+                for (var i = 0; i < count; i++) {
+                    final var q = quads.get(i);
+                    emitter.fromVanilla(q, q.getSprite() == cursor ? emissiveMaterial : defaultMaterial, cullFace);
+                    emitter.emit();
+                }
+            }
+        }
+    }
+}
--- a/projects/fabric/src/client/java/dan200/computercraft/client/model/TransformedBakedModel.java
+++ b/projects/fabric/src/client/java/dan200/computercraft/client/model/TransformedBakedModel.java
@ -4,84 +4,32 @@

 package dan200.computercraft.client.model;

-import com.mojang.blaze3d.vertex.DefaultVertexFormat;
-import com.mojang.blaze3d.vertex.VertexFormat;
-import com.mojang.blaze3d.vertex.VertexFormatElement;
 import com.mojang.math.Transformation;
+import dan200.computercraft.client.model.turtle.ModelTransformer;
 import net.minecraft.client.renderer.block.model.BakedQuad;
 import net.minecraft.client.resources.model.BakedModel;
 import net.minecraft.core.Direction;
 import net.minecraft.util.RandomSource;
 import net.minecraft.world.level.block.state.BlockState;
-import org.joml.Matrix4f;
-import org.joml.Vector4f;

 import javax.annotation.Nullable;
-import java.util.ArrayList;
 import java.util.List;

 /**
 * A {@link BakedModel} which applies a transformation matrix to its underlying quads.
+ *
+ * @see ModelTransformer
 */
 public class TransformedBakedModel extends CustomBakedModel {
-    private static final int STRIDE = DefaultVertexFormat.BLOCK.getIntegerSize();
-    private static final int POS_OFFSET = findOffset(DefaultVertexFormat.BLOCK, DefaultVertexFormat.ELEMENT_POSITION);
-
-    private final Matrix4f transformation;
-    private @Nullable TransformedQuads cache;
+    private final ModelTransformer transformation;

    public TransformedBakedModel(BakedModel model, Transformation transformation) {
        super(model);
-        this.transformation = transformation.getMatrix();
+        this.transformation = new ModelTransformer(transformation);
    }

    @Override
    public List<BakedQuad> getQuads(@Nullable BlockState blockState, @Nullable Direction face, RandomSource rand) {
-        var cache = this.cache;
-        var quads = wrapped.getQuads(blockState, face, rand);
-        if (quads.isEmpty()) return List.of();
-
-        // We do some basic caching here to avoid recomputing every frame. Most turtle models don't have culled faces,
-        // so it's not worth being smarter here.
-        if (cache != null && quads.equals(cache.original())) return cache.transformed();
-
-        List<BakedQuad> transformed = new ArrayList<>(quads.size());
-        for (var quad : quads) transformed.add(transformQuad(quad));
-        this.cache = new TransformedQuads(quads, transformed);
-        return transformed;
-    }
-
-    private BakedQuad transformQuad(BakedQuad quad) {
-        var vertexData = quad.getVertices().clone();
-        for (var i = 0; i < 4; i++) {
-            // Apply the matrix to our position
-            var start = STRIDE * i + POS_OFFSET;
-
-            var x = Float.intBitsToFloat(vertexData[start]);
-            var y = Float.intBitsToFloat(vertexData[start + 1]);
-            var z = Float.intBitsToFloat(vertexData[start + 2]);
-
-            // Transform the position
-            var pos = new Vector4f(x, y, z, 1);
-            transformation.transformProject(pos);
-
-            vertexData[start] = Float.floatToRawIntBits(pos.x());
-            vertexData[start + 1] = Float.floatToRawIntBits(pos.y());
-            vertexData[start + 2] = Float.floatToRawIntBits(pos.z());
-        }
-
-        return new BakedQuad(vertexData, quad.getTintIndex(), quad.getDirection(), quad.getSprite(), quad.isShade());
-    }
-
-    private record TransformedQuads(List<BakedQuad> original, List<BakedQuad> transformed) {
-    }
-
-    private static int findOffset(VertexFormat format, VertexFormatElement element) {
-        var offset = 0;
-        for (var other : format.getElements()) {
-            if (other == element) return offset / Integer.BYTES;
-            offset += element.getByteSize();
-        }
-        throw new IllegalArgumentException("Cannot find " + element + " in " + format);
+        return transformation.transform(wrapped.getQuads(blockState, face, rand));
    }
 }
--- a/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_advanced_blinking.json
+++ b/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_advanced_blinking.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_advanced_front_blink",
+    "cursor": "computercraft:block/computer_blink",
+    "front": "computercraft:block/computer_advanced_front",
    "side": "computercraft:block/computer_advanced_side",
    "top": "computercraft:block/computer_advanced_top"
  }
--- a/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_advanced_on.json
+++ b/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_advanced_on.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_advanced_front_on",
+    "cursor": "computercraft:block/computer_on",
+    "front": "computercraft:block/computer_advanced_front",
    "side": "computercraft:block/computer_advanced_side",
    "top": "computercraft:block/computer_advanced_top"
  }
--- a/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_command_blinking.json
+++ b/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_command_blinking.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_command_front_blink",
+    "cursor": "computercraft:block/computer_blink",
+    "front": "computercraft:block/computer_command_front",
    "side": "computercraft:block/computer_command_side",
    "top": "computercraft:block/computer_command_top"
  }
--- a/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_command_on.json
+++ b/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_command_on.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_command_front_on",
+    "cursor": "computercraft:block/computer_on",
+    "front": "computercraft:block/computer_command_front",
    "side": "computercraft:block/computer_command_side",
    "top": "computercraft:block/computer_command_top"
  }
--- a/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_normal_blinking.json
+++ b/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_normal_blinking.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_normal_front_blink",
+    "cursor": "computercraft:block/computer_blink",
+    "front": "computercraft:block/computer_normal_front",
    "side": "computercraft:block/computer_normal_side",
    "top": "computercraft:block/computer_normal_top"
  }
--- a/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_normal_on.json
+++ b/projects/fabric/src/generated/resources/assets/computercraft/models/block/computer_normal_on.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_normal_front_on",
+    "cursor": "computercraft:block/computer_on",
+    "front": "computercraft:block/computer_normal_front",
    "side": "computercraft:block/computer_normal_side",
    "top": "computercraft:block/computer_normal_top"
  }
--- a/projects/fabric/src/generated/resources/assets/minecraft/atlases/blocks.json
+++ b/projects/fabric/src/generated/resources/assets/minecraft/atlases/blocks.json
@ -0,0 +1,6 @@
+{
+  "sources": [
+    {"type": "minecraft:single", "resource": "computercraft:gui/turtle_upgrade_left"},
+    {"type": "minecraft:single", "resource": "computercraft:gui/turtle_upgrade_right"}
+  ]
+}
--- a/projects/fabric/src/main/java/dan200/computercraft/data/FabricDataGenerators.java
+++ b/projects/fabric/src/main/java/dan200/computercraft/data/FabricDataGenerators.java
@ -4,21 +4,25 @@

 package dan200.computercraft.data;

+import com.mojang.serialization.Codec;
 import dan200.computercraft.shared.platform.RegistryWrappers;
 import net.fabricmc.fabric.api.datagen.v1.DataGeneratorEntrypoint;
 import net.fabricmc.fabric.api.datagen.v1.FabricDataGenerator;
 import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricCodecDataProvider;
 import net.fabricmc.fabric.api.datagen.v1.provider.FabricModelProvider;
 import net.fabricmc.fabric.api.datagen.v1.provider.FabricTagProvider;
 import net.fabricmc.fabric.api.datagen.v1.provider.SimpleFabricLootTableProvider;
 import net.minecraft.core.HolderLookup;
 import net.minecraft.data.CachedOutput;
 import net.minecraft.data.DataProvider;
+import net.minecraft.data.PackOutput;
 import net.minecraft.data.loot.LootTableProvider;
 import net.minecraft.data.models.BlockModelGenerators;
 import net.minecraft.data.models.ItemModelGenerators;
 import net.minecraft.data.tags.TagsProvider;
 import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.packs.PackType;
 import net.minecraft.tags.TagKey;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.level.block.Block;
@ -43,6 +47,27 @@ public class FabricDataGenerators implements DataGeneratorEntrypoint {
            return generator.addProvider(factory);
        }

+        @Override
+        public <T> void addFromCodec(String name, PackType type, String directory, Codec<T> codec, Consumer<BiConsumer<ResourceLocation, T>> output) {
+            generator.addProvider((FabricDataOutput out) -> {
+                var ourType = switch (type) {
+                    case SERVER_DATA -> PackOutput.Target.DATA_PACK;
+                    case CLIENT_RESOURCES -> PackOutput.Target.RESOURCE_PACK;
+                };
+                return new FabricCodecDataProvider<T>(out, ourType, directory, codec) {
+                    @Override
+                    public String getName() {
+                        return name;
+                    }
+
+                    @Override
+                    protected void configure(BiConsumer<ResourceLocation, T> provider) {
+                        output.accept(provider);
+                    }
+                };
+            });
+        }
+
        @Override
        public void lootTable(List<LootTableProvider.SubProviderEntry> tables) {
            for (var table : tables) {
--- a/projects/forge/src/client/java/dan200/computercraft/client/model/TransformedBakedModel.java
+++ b/projects/forge/src/client/java/dan200/computercraft/client/model/TransformedBakedModel.java
@ -5,6 +5,7 @@
 package dan200.computercraft.client.model;

 import com.mojang.math.Transformation;
+import dan200.computercraft.client.model.turtle.ModelTransformer;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.block.model.BakedQuad;
 import net.minecraft.client.resources.model.BakedModel;
@ -12,7 +13,6 @@ import net.minecraft.core.Direction;
 import net.minecraft.util.RandomSource;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraftforge.client.model.BakedModelWrapper;
-import net.minecraftforge.client.model.QuadTransformers;
 import net.minecraftforge.client.model.data.ModelData;

 import javax.annotation.Nullable;
@ -20,16 +20,15 @@ import java.util.List;

 /**
 * A {@link BakedModel} which applies a transformation matrix to its underlying quads.
+ *
+ * @see ModelTransformer
 */
 public class TransformedBakedModel extends BakedModelWrapper<BakedModel> {
-    private final Transformation transformation;
-    private final boolean invert;
-    private @Nullable TransformedQuads cache;
+    private final ModelTransformer transformation;

    public TransformedBakedModel(BakedModel model, Transformation transformation) {
        super(model);
-        this.transformation = transformation;
-        invert = transformation.getNormalMatrix().determinant() < 0;
+        this.transformation = new ModelTransformer(transformation);
    }

    @Override
@ -39,19 +38,6 @@ public class TransformedBakedModel extends BakedModelWrapper<BakedModel> {

    @Override
    public List<BakedQuad> getQuads(@Nullable BlockState state, @Nullable Direction side, RandomSource rand, ModelData extraData, @Nullable RenderType renderType) {
-        var cache = this.cache;
-        var quads = originalModel.getQuads(state, side, rand, extraData, renderType);
-        if (quads.isEmpty()) return List.of();
-
-        // We do some basic caching here to avoid recomputing every frame. Most turtle models don't have culled faces,
-        // so it's not worth being smarter here.
-        if (cache != null && quads.equals(cache.original())) return cache.transformed();
-
-        var transformed = QuadTransformers.applying(transformation).process(quads);
-        this.cache = new TransformedQuads(quads, transformed);
-        return transformed;
-    }
-
-    private record TransformedQuads(List<BakedQuad> original, List<BakedQuad> transformed) {
+        return transformation.transform(originalModel.getQuads(state, side, rand, extraData, renderType));
    }
 }
--- a/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_advanced_blinking.json
+++ b/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_advanced_blinking.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_advanced_front_blink",
+    "cursor": "computercraft:block/computer_blink",
+    "front": "computercraft:block/computer_advanced_front",
    "side": "computercraft:block/computer_advanced_side",
    "top": "computercraft:block/computer_advanced_top"
  }
--- a/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_advanced_on.json
+++ b/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_advanced_on.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_advanced_front_on",
+    "cursor": "computercraft:block/computer_on",
+    "front": "computercraft:block/computer_advanced_front",
    "side": "computercraft:block/computer_advanced_side",
    "top": "computercraft:block/computer_advanced_top"
  }
--- a/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_command_blinking.json
+++ b/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_command_blinking.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_command_front_blink",
+    "cursor": "computercraft:block/computer_blink",
+    "front": "computercraft:block/computer_command_front",
    "side": "computercraft:block/computer_command_side",
    "top": "computercraft:block/computer_command_top"
  }
--- a/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_command_on.json
+++ b/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_command_on.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_command_front_on",
+    "cursor": "computercraft:block/computer_on",
+    "front": "computercraft:block/computer_command_front",
    "side": "computercraft:block/computer_command_side",
    "top": "computercraft:block/computer_command_top"
  }
--- a/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_normal_blinking.json
+++ b/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_normal_blinking.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_normal_front_blink",
+    "cursor": "computercraft:block/computer_blink",
+    "front": "computercraft:block/computer_normal_front",
    "side": "computercraft:block/computer_normal_side",
    "top": "computercraft:block/computer_normal_top"
  }
--- a/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_normal_on.json
+++ b/projects/forge/src/generated/resources/assets/computercraft/models/block/computer_normal_on.json
@ -1,7 +1,8 @@
 {
-  "parent": "minecraft:block/orientable",
+  "parent": "computercraft:block/computer_on",
  "textures": {
-    "front": "computercraft:block/computer_normal_front_on",
+    "cursor": "computercraft:block/computer_on",
+    "front": "computercraft:block/computer_normal_front",
    "side": "computercraft:block/computer_normal_side",
    "top": "computercraft:block/computer_normal_top"
  }
--- a/projects/forge/src/generated/resources/assets/minecraft/atlases/blocks.json
+++ b/projects/forge/src/generated/resources/assets/minecraft/atlases/blocks.json
@ -0,0 +1,6 @@
+{
+  "sources": [
+    {"type": "minecraft:single", "resource": "computercraft:gui/turtle_upgrade_left"},
+    {"type": "minecraft:single", "resource": "computercraft:gui/turtle_upgrade_right"}
+  ]
+}
--- a/projects/forge/src/generated/resources/data/computercraft/loot_modifiers/treasure_disk.json
+++ b/projects/forge/src/generated/resources/data/computercraft/loot_modifiers/treasure_disk.json
@ -4,16 +4,16 @@
    {
      "condition": "minecraft:any_of",
      "terms": [
+        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/stronghold_library"},
+        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/woodland_mansion"},
+        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/stronghold_corridor"},
+        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/abandoned_mineshaft"},
        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/simple_dungeon"},
        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/village/village_cartographer"},
        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/igloo_chest"},
        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/jungle_temple"},
        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/desert_pyramid"},
-        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/stronghold_crossing"},
-        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/stronghold_library"},
-        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/woodland_mansion"},
-        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/stronghold_corridor"},
-        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/abandoned_mineshaft"}
+        {"condition": "forge:loot_table_id", "loot_table_id": "minecraft:chests/stronghold_crossing"}
      ]
    }
  ],
--- a/projects/forge/src/main/java/dan200/computercraft/data/Generators.java
+++ b/projects/forge/src/main/java/dan200/computercraft/data/Generators.java
@ -4,6 +4,8 @@

 package dan200.computercraft.data;

+import com.mojang.serialization.Codec;
+import com.mojang.serialization.JsonOps;
 import dan200.computercraft.api.ComputerCraftAPI;
 import dan200.computercraft.shared.platform.RegistryWrappers;
 import net.minecraft.core.HolderLookup;
@ -14,18 +16,24 @@ import net.minecraft.data.models.BlockModelGenerators;
 import net.minecraft.data.models.ItemModelGenerators;
 import net.minecraft.data.tags.ItemTagsProvider;
 import net.minecraft.data.tags.TagsProvider;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.packs.PackType;
 import net.minecraft.tags.TagKey;
 import net.minecraft.world.item.Item;
 import net.minecraft.world.level.block.Block;
 import net.minecraftforge.common.data.BlockTagsProvider;
 import net.minecraftforge.common.data.ExistingFileHelper;
+import net.minecraftforge.common.data.JsonCodecProvider;
 import net.minecraftforge.data.event.GatherDataEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 import net.minecraftforge.fml.common.Mod;

+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CompletableFuture;
+import java.util.function.BiConsumer;
 import java.util.function.Consumer;

@Mod.EventBusSubscriber(bus = Mod.EventBusSubscriber.Bus.MOD)
@ -48,6 +56,15 @@ public class Generators {
            return generator.addProvider(factory);
        }

+        @Override
+        public <T> void addFromCodec(String name, PackType type, String directory, Codec<T> codec, Consumer<BiConsumer<ResourceLocation, T>> output) {
+            generator.addProvider(out -> {
+                Map<ResourceLocation, T> map = new HashMap<>();
+                output.accept(map::put);
+                return new JsonCodecProvider<>(out, existingFiles, ComputerCraftAPI.MOD_ID, JsonOps.INSTANCE, type, directory, codec, map);
+            });
+        }
+
        @Override
        public void lootTable(List<LootTableProvider.SubProviderEntry> tables) {
            add(out -> new LootTableProvider(out, Set.of(), tables));