moved rest of the stuff. mixins needed still

src/main/java/carpet/mixins/ServerChunkManagerMixin.java

@@ -0,0 +1,53 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import carpet.utils.SpawnReporter;
+import it.unimi.dsi.fastutil.objects.Object2IntMap;
+import net.minecraft.entity.EntityCategory;
+import net.minecraft.server.world.ServerChunkManager;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.dimension.DimensionType;
+import net.minecraft.world.level.LevelProperties;
+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.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
+
+@Mixin(ServerChunkManager.class)
+public abstract class ServerChunkManagerMixin
+{
+    @Shadow @Final private ServerWorld world;
+
+    @Inject(
+            method = "tickChunks",
+            locals = LocalCapture.CAPTURE_FAILHARD,
+            at = @At(
+                    value = "INVOKE",
+                    target = "Lnet/minecraft/server/world/ThreadedAnvilChunkStorage;entryIterator()Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;",
+                    shift = At.Shift.AFTER,
+                    ordinal = 0
+
+    ))
+    private void grabMobcaps(CallbackInfo ci,
+                             long long_1,
+                             long long_2,
+                             LevelProperties levelProperties_1,
+                             boolean boolean_1,
+                             boolean boolean_2,
+                             int int_1,
+                             BlockPos blockPos_1,
+                             boolean boolean_3,
+                             int int_2,
+                             EntityCategory[] entityCategorys_1,
+                             Object2IntMap object2IntMap_1)
+    {
+        DimensionType dim = this.world.dimension.getType();
+        SpawnReporter.mobCounts.put(dim, (Object2IntMap<EntityCategory>)object2IntMap_1);
+        SpawnReporter.chunkCounts.put(dim, int_2);
+    }
+
+}