fix more memory leak

src/DtsObject.hx

@@ -990,6 +990,8 @@ class DtsObject extends GameObject {
 	public override function dispose() {
 		super.dispose();
 		this.level = null;
+		boundingCollider = null;
+		colliders = null;
 		this.dtsResource.release();
 	}
 }

src/Marble.hx

@@ -1664,4 +1664,11 @@ class Marble extends GameObject {
 		this.contactEntities = [];
 		this._firstTick = true;
 	}
+
+	public override function dispose() {
+		super.dispose();
+		removeChildren();
+		camera = null;
+		collider = null;
+	}
 }

src/MarbleWorld.hx

@@ -1571,8 +1571,9 @@ class MarbleWorld extends Scheduler {
 		gems = null;
 
 		sky.dispose();
-
+		sky = null;
 		instanceManager = null;
+		collisionWorld.dispose();
 		collisionWorld = null;
 		particleManager = null;
 		namedObjects = null;

src/collision/CollisionEntity.hx

@@ -69,6 +69,15 @@ class CollisionEntity implements IOctreeObject implements IBVHObject {
 		// this.bvh.build();
 	}
 
+	public function dispose() {
+		for (s in this.surfaces)
+			s.dispose();
+		go = null;
+		surfaces = null;
+		bvh = null;
+		octree = null;
+	}
+
 	public function setTransform(transform:Matrix) {
 		if (this.transform.equal(transform))
 			return;

src/collision/CollisionSurface.hx

@@ -151,4 +151,15 @@ class CollisionSurface implements IOctreeObject implements IBVHObject {
 			n: _transformedNormals[p1]
 		};
 	}
+
+	public function dispose() {
+		points = null;
+		normals = null;
+		indices = null;
+		_transformedPoints = null;
+		_transformedNormals = null;
+		edgeData = null;
+		edgeConcavities = null;
+		originalIndices = null;
+	}
 }

src/collision/CollisionWorld.hx

@@ -127,4 +127,18 @@ class CollisionWorld {
 			this.dynamicOctree.update(entity);
 		}
 	}
+
+	public function dispose() {
+		for (e in entities) {
+			e.dispose();
+		}
+		for (e in dynamicEntities) {
+			e.dispose();
+		}
+		octree = null;
+		entities = null;
+		dynamicEntities = null;
+		dynamicOctree = null;
+		dynamicEntitySet = null;
+	}
 }