feat: feature generation but only in even chunks

platforms/minestom/src/main/java/com/dfsek/terra/minestom/chunk/GeneratedChunkCache.java

@@ -39,7 +39,7 @@ public class GeneratedChunkCache {
         return chunk;
     }
 
-    public CachedChunk at(int x, int y) {
+    public CachedChunk at(int x, int z) {
-        return cache.get(Pair.of(x, y));
+        return cache.get(Pair.of(x, z));
     }
 }

platforms/minestom/src/main/java/com/dfsek/terra/minestom/world/MinestomChunkGeneratorWrapper.java

@@ -34,6 +34,10 @@ public class MinestomChunkGeneratorWrapper implements Generator {
 
         //chunk.writeRelative(unit.modifier());
 
+        if (start.chunkX() % 2 == 0 && start.chunkZ() % 2 == 0) {
+            chunk.writeRelative(unit.modifier());
+        }
+
         unit.fork(setter -> {
             MinestomProtoWorld protoWorld = new MinestomProtoWorld(
                 cache,