Implemented Replacement for fabrics ClientSpriteRegistryCallback

src/main/java/org/betterx/bclib/client/BCLibClient.java

@@ -4,6 +4,8 @@ import org.betterx.bclib.api.v2.ModIntegrationAPI;
 import org.betterx.bclib.api.v2.PostInitAPI;
 import org.betterx.bclib.api.v2.dataexchange.DataExchangeAPI;
 import org.betterx.bclib.client.models.CustomModelBakery;
+import org.betterx.bclib.client.textures.AtlasSetManager;
+import org.betterx.bclib.client.textures.SpriteLister;
 import org.betterx.bclib.config.Configs;
 import org.betterx.bclib.registry.BaseBlockEntityRenders;
 import org.betterx.bclib.registry.PresetsRegistryClient;
@@ -35,14 +37,9 @@ public class BCLibClient implements ClientModInitializer, ModelResourceProvider,
 
         PresetsRegistryClient.onLoad();
         WorldsTogether.SURPRESS_EXPERIMENTAL_DIALOG = Configs.CLIENT_CONFIG.suppressExperimentalDialog();
-        //dumpDatapack();
+
-        //TODO: 1.19.3 Find out how to load sprites from custom folders
+        AtlasSetManager.addSource(AtlasSetManager.VANILLA_BLOCKS, new SpriteLister("entity/chest"));
-//        ClientSpriteRegistryCallback
+        AtlasSetManager.addSource(AtlasSetManager.VANILLA_BLOCKS, new SpriteLister("blocks"));
-//                .event(TextureAtlas.LOCATION_BLOCKS)
-//                .register((resourceManager, sprites) -> {
-//                    SpriteLoader.listSprites(resourceManager, "entity/chest", sprites::put);
-//                    SpriteLoader.listSprites(resourceManager, "blocks", sprites::put);
-//                });
     }
 
     @Override

src/main/java/org/betterx/bclib/client/textures/AtlasSetManager.java

@@ -0,0 +1,29 @@
+package org.betterx.bclib.client.textures;
+
+import net.minecraft.client.renderer.texture.atlas.SpriteSource;
+import net.minecraft.resources.ResourceLocation;
+
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+@Environment(value = EnvType.CLIENT)
+public class AtlasSetManager {
+    public static final ResourceLocation VANILLA_BLOCKS = new ResourceLocation("blocks");
+    private static Map<ResourceLocation, List<SpriteSource>> additionalSets = new HashMap<>();
+
+    public static void addSource(ResourceLocation type, SpriteSource source) {
+        additionalSets.computeIfAbsent(type, (t) -> new LinkedList<>()).add(source);
+    }
+
+    public static void onLoadResources(ResourceLocation type, List<SpriteSource> sources) {
+        List<SpriteSource> additionalSources = additionalSets.get(type);
+        if (additionalSources != null) {
+            sources.addAll(additionalSources);
+        }
+    }
+}

src/main/java/org/betterx/bclib/client/textures/SpriteLister.java

@@ -0,0 +1,13 @@
+package org.betterx.bclib.client.textures;
+
+import net.minecraft.client.renderer.texture.atlas.sources.DirectoryLister;
+
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+
+@Environment(value = EnvType.CLIENT)
+public class SpriteLister extends DirectoryLister {
+    public SpriteLister(String string) {
+        super(string, string + "/");
+    }
+}

src/main/java/org/betterx/bclib/mixin/client/AtlasSetMixin.java

@@ -0,0 +1,27 @@
+package org.betterx.bclib.mixin.client;
+
+import org.betterx.bclib.client.textures.AtlasSetManager;
+
+import net.minecraft.client.renderer.texture.atlas.SpriteResourceLoader;
+import net.minecraft.client.renderer.texture.atlas.SpriteSource;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.packs.resources.ResourceManager;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyVariable;
+
+import java.util.List;
+
+@Mixin(SpriteResourceLoader.class)
+public class AtlasSetMixin {
+    @ModifyVariable(method = "load", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/texture/atlas/SpriteResourceLoader;<init>(Ljava/util/List;)V"))
+    private static List<SpriteSource> bcl_load(
+            List<SpriteSource> list,
+            ResourceManager resourceManager,
+            ResourceLocation type
+    ) {
+        AtlasSetManager.onLoadResources(type, list);
+        return list;
+    }
+}

src/main/resources/bclib.accesswidener

@@ -13,6 +13,7 @@ extendable  class   net/minecraft/world/level/levelgen/NoiseBasedChunkGenerator
 accessible class net/minecraft/core/registries/BuiltInRegistries$RegistryBootstrap
 accessible class net/minecraft/world/level/levelgen/SurfaceRules$SequenceRuleSource
 accessible class net/minecraft/server/dedicated/DedicatedServerProperties$WorldDimensionData
+accessible class net/minecraft/client/resources/model/AtlasSet$AtlasEntry
 
 #Methods
 accessible method net/minecraft/client/gui/screens/worldselection/WorldGenSettingsComponent updateSettings (Lnet/minecraft/client/gui/screens/worldselection/WorldCreationContext$DimensionsUpdater;)V

src/main/resources/bclib.mixins.client.json

@@ -5,6 +5,7 @@
   "compatibilityLevel": "JAVA_17",
   "client": [
     "AnvilScreenMixin",
+    "AtlasSetMixin",
     "BlockMixin",
     "ClientRecipeBookMixin",
     "FogRendererMixin",