start working on mixins

platforms/sponge/build.gradle.kts

@@ -17,6 +17,10 @@ repositories {
 
 dependencies {
     "compileOnly"("org.spongepowered:spongeapi:8.0.0-SNAPSHOT")
+
+    "annotationProcessor"("org.spongepowered:mixin:0.8.2:processor")
+
+    "compileOnly"("org.spongepowered:mixin:0.8.2")
     "shadedApi"(project(":common"))
     "shadedImplementation"("org.yaml:snakeyaml:1.27")
     "shadedImplementation"("com.googlecode.json-simple:json-simple:1.1.1")
@@ -35,3 +39,11 @@ minecraft {
         client()
     }
 }
+
+tasks.named<Jar>("jar") {
+    manifest {
+        attributes(
+                mapOf("MixinConfigs" to "terra.mixins.json")
+        )
+    }
+}

platforms/sponge/src/main/java/com/dfsek/terra/sponge/TerraSpongePlugin.java

@@ -192,6 +192,10 @@ public class TerraSpongePlugin implements TerraPlugin {
         return profiler;
     }
 
+    public Map<DimensionType,Pair<ServerWorld, TerraWorld>> getWorldMap() {
+        return worldMap;
+    }
+
     @Addon("Terra-Sponge")
     @Author("Terra")
     @Version("1.0.0")

platforms/sponge/src/main/java/com/dfsek/terra/sponge/handle/SpongeWorldHandle.java

@@ -3,7 +3,7 @@ package com.dfsek.terra.sponge.handle;
 import com.dfsek.terra.api.platform.block.BlockData;
 import com.dfsek.terra.api.platform.entity.EntityType;
 import com.dfsek.terra.api.platform.handle.WorldHandle;
-import com.dfsek.terra.sponge.SpongeAdapter;
+import com.dfsek.terra.sponge.intern.util.SpongeAdapter;
 import org.spongepowered.api.Sponge;
 import org.spongepowered.api.block.BlockState;
 

platforms/sponge/src/main/java/com/dfsek/terra/sponge/intern/mixin/ServerLevelMixin.java

@@ -0,0 +1,35 @@
+package com.dfsek.terra.sponge.intern.mixin;
+
+import com.dfsek.terra.api.util.generic.pair.Pair;
+import com.dfsek.terra.sponge.TerraSpongePlugin;
+import com.dfsek.terra.sponge.intern.SpongeChunkGeneratorWrapper;
+import com.dfsek.terra.world.TerraWorld;
+import net.minecraft.server.level.ServerChunkCache;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.dimension.DimensionType;
+import org.spongepowered.api.world.server.ServerWorld;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(ServerLevel.class)
+public abstract class ServerLevelMixin {
+    @Shadow
+    @Final
+    private ServerChunkCache chunkSource;
+
+    @Redirect(method = "<init>", at = @At(value = "INVOKE", target = "Lnet/minecraft/world/level/Level;updateSkyBrightness()V"))
+    public void injectConstructor(Level level) {
+        if(chunkSource.getGenerator() instanceof SpongeChunkGeneratorWrapper) {
+            SpongeChunkGeneratorWrapper chunkGeneratorWrapper = (SpongeChunkGeneratorWrapper) chunkSource.getGenerator();
+            DimensionType dimensionType = ((Level) (Object) this).dimensionType();
+            TerraSpongePlugin.getInstance().getWorldMap().put(dimensionType, Pair.of((ServerWorld) this, new TerraWorld((com.dfsek.terra.api.platform.world.World) this, chunkGeneratorWrapper.getPack(), TerraSpongePlugin.getInstance())));
+            chunkGeneratorWrapper.setDimensionType(dimensionType);
+            TerraSpongePlugin.getInstance().logger().info("Registered world " + this + " to dimension type " + dimensionType);
+        }
+        ((Level) (Object) this).updateSkyBrightness();
+    }
+}

platforms/sponge/src/main/java/com/dfsek/terra/sponge/intern/util/SpongeAdapter.java

@@ -1,7 +1,10 @@
 package com.dfsek.terra.sponge.intern.util;
 
 import com.dfsek.terra.api.math.vector.Vector3;
+import com.dfsek.terra.api.platform.block.BlockData;
+import com.dfsek.terra.sponge.world.block.data.SpongeBlockData;
 import net.minecraft.core.BlockPos;
+import org.spongepowered.api.block.BlockState;
 
 public final class SpongeAdapter {
     public static Vector3 adapt(BlockPos pos) {
@@ -11,4 +14,8 @@ public final class SpongeAdapter {
     public static BlockPos adapt(Vector3 vec) {
         return new BlockPos(vec.getBlockX(), vec.getBlockY(), vec.getBlockZ());
     }
+
+    public static BlockData adapt(BlockState state) {
+        return new SpongeBlockData(state);
+    }
 }

platforms/sponge/src/main/resources/META-INF/MANIFEST.MF

@@ -0,0 +1 @@
+MixinConfigs: terra.mixins.json

platforms/sponge/src/main/resources/terra.mixins.json

@@ -0,0 +1,17 @@
+{
+  "required": true,
+  "package": "com.dfsek.terra.sponge.intern.mixin",
+  "compatibilityLevel": "JAVA_8",
+  "refmap": "terra-refmap.json",
+  "mixins": [
+    "ServerLevelMixin"
+  ],
+  "client": [
+  ],
+  "server": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  },
+  "minVersion": "0.8"
+}