remove assumption that world starts at Y=0

platforms/bukkit/src/main/java/com/dfsek/terra/bukkit/world/BukkitWorld.java

@@ -77,6 +77,11 @@ public class BukkitWorld implements World {
         return new BukkitEntity(delegate.spawnEntity(BukkitAdapter.adapt(location), ((BukkitEntityType) entityType).getHandle()));
     }
 
+    @Override
+    public int getMinHeight() {
+        return 0;
+    }
+
     @Override
     public org.bukkit.World getHandle() {
         return delegate;

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/block/state/FabricBlankBlockState.java

@@ -1,50 +0,0 @@
-package com.dfsek.terra.fabric.world.block.state;
-
-import com.dfsek.terra.api.platform.block.Block;
-import com.dfsek.terra.api.platform.block.BlockData;
-import com.dfsek.terra.api.platform.block.state.BlockState;
-import com.dfsek.terra.fabric.world.block.FabricBlock;
-
-public class FabricBlankBlockState implements BlockState {
-    private final FabricBlock delegate;
-
-    public FabricBlankBlockState(FabricBlock delegate) {
-        this.delegate = delegate;
-    }
-
-
-    @Override
-    public Block getHandle() {
-        return delegate;
-    }
-
-    @Override
-    public Block getBlock() {
-        return delegate;
-    }
-
-    @Override
-    public int getX() {
-        return delegate.getX();
-    }
-
-    @Override
-    public int getY() {
-        return delegate.getY();
-    }
-
-    @Override
-    public int getZ() {
-        return delegate.getZ();
-    }
-
-    @Override
-    public BlockData getBlockData() {
-        return delegate.getBlockData();
-    }
-
-    @Override
-    public boolean update(boolean applyPhysics) {
-        return true;
-    }
-}

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/handles/FabricWorld.java

@@ -93,6 +93,11 @@ public class FabricWorld implements World, FabricWorldHandle {
         return null;
     }
 
+    @Override
+    public int getMinHeight() {
+        return 0;
+    }
+
     @Override
     public Handle getHandle() {
         return null;

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/handles/world/FabricSeededWorldAccess.java

@@ -80,6 +80,11 @@ public class FabricSeededWorldAccess implements World, FabricWorldHandle {
         return null;
     }
 
+    @Override
+    public int getMinHeight() {
+        return 0;
+    }
+
     @Override
     public int hashCode() {
         return ((ServerWorldAccess) handle.worldAccess).toServerWorld().hashCode();

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/handles/world/FabricWorldAccess.java

@@ -80,6 +80,11 @@ public class FabricWorldAccess implements World, FabricWorldHandle {
         return null;
     }
 
+    @Override
+    public int getMinHeight() {
+        return 0;
+    }
+
     @Override
     public WorldAccess getHandle() {
         return delegate;

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/handles/world/FabricWorldChunkRegion.java

@@ -91,6 +91,11 @@ public class FabricWorldChunkRegion implements World, FabricWorldHandle {
         return null;
     }
 
+    @Override
+    public int getMinHeight() {
+        return 0;
+    }
+
     @Override
     public Object getHandle() {
         return delegate;

platforms/region/src/main/java/com/dfsek/terra/platform/DirectWorld.java

@@ -92,6 +92,11 @@ public class DirectWorld implements World {
         return null;
     }
 
+    @Override
+    public int getMinHeight() {
+        return 0;
+    }
+
     @Override
     public Object getHandle() {
         return generator;