Cleaned up BatchNode a bit and implemented collideWith to work only with non-batched children.

jme3-core/src/main/java/com/jme3/scene/BatchNode.java

@@ -31,14 +31,6 @@
  */
 package com.jme3.scene;
 
-import com.jme3.export.*;
-import com.jme3.material.Material;
-import com.jme3.math.Matrix4f;
-import com.jme3.math.Vector3f;
-import com.jme3.scene.mesh.IndexBuffer;
-import com.jme3.util.SafeArrayList;
-import com.jme3.util.TempVars;
-import java.io.IOException;
 import java.nio.Buffer;
 import java.nio.FloatBuffer;
 import java.util.ArrayList;
@@ -48,13 +40,22 @@ import java.util.Map;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import com.jme3.collision.Collidable;
+import com.jme3.collision.CollisionResults;
+import com.jme3.material.Material;
+import com.jme3.math.Matrix4f;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.mesh.IndexBuffer;
+import com.jme3.util.SafeArrayList;
+import com.jme3.util.TempVars;
+
 /**
  * BatchNode holds geometries that are a batched version of all the geometries that are in its sub scenegraph.
  * There is one geometry per different material in the sub tree.
  * The geometries are directly attached to the node in the scene graph.
  * Usage is like any other node except you have to call the {@link #batch()} method once all the geometries have been attached to the sub scene graph and their material set
  * (see todo more automagic for further enhancements)
- * All the geometries that have been batched are set to {@link CullHint#Always} to not render them.
+ * All the geometries that have been batched are set to not be rendered - {@link CullHint} is left intact.
  * The sub geometries can be transformed as usual, their transforms are used to update the mesh of the geometryBatch.
  * Sub geoms can be removed but it may be slower than the normal spatial removing
  * Sub geoms can be added after the batch() method has been called but won't be batched and will just be rendered as normal geometries.
@@ -72,7 +73,7 @@ public class BatchNode extends GeometryGroupNode {
      */
     protected SafeArrayList<Batch> batches = new SafeArrayList<Batch>(Batch.class);
     /**
-     * a map storing he batches by geometry to quickly acces the batch when updating
+     * a map for storing the batches by geometry to quickly access the batch when updating
      */
     protected Map<Geometry, Batch> batchesByGeom = new HashMap<Geometry, Batch>();
     /**
@@ -118,7 +119,6 @@ public class BatchNode extends GeometryGroupNode {
     public void onGeoemtryUnassociated(Geometry geom) {
         setNeedsFullRebatch(true);
     }
-    
 
     protected Matrix4f getTransformMatrix(Geometry g){
         return g.cachedWorldMat;
@@ -166,7 +166,7 @@ public class BatchNode extends GeometryGroupNode {
      */
     public void batch() {
         doBatch();
-        //we set the batch geometries to ignore transforms to avoid transforms of parent nodes to be applied twice        
+        //we set the batch geometries to ignore transforms to avoid transforms of parent nodes to be applied twice
         for (Batch batch : batches.getArray()) {
             batch.geometry.setIgnoreTransform(true);
             batch.geometry.setUserData(UserData.JME_PHYSICSIGNORE, true);
@@ -174,10 +174,10 @@ public class BatchNode extends GeometryGroupNode {
     }
 
     protected void doBatch() {
-        Map<Material, List<Geometry>> matMap = new HashMap<Material, List<Geometry>>();    
+        Map<Material, List<Geometry>> matMap = new HashMap<Material, List<Geometry>>();
         int nbGeoms = 0;
 
-        gatherGeomerties(matMap, this, needsFullRebatch);
+        gatherGeometries(matMap, this, needsFullRebatch);
         if (needsFullRebatch) {
             for (Batch batch : batches.getArray()) {
                 batch.geometry.removeFromParent();
@@ -221,7 +221,7 @@ public class BatchNode extends GeometryGroupNode {
 
             batch.geometry.setMesh(m);
             batch.geometry.getMesh().updateCounts();
-            batch.geometry.updateModelBound();            
+            batch.geometry.updateModelBound();
             batches.add(batch);
         }
         if (batches.size() > 0) {
@@ -271,7 +271,7 @@ public class BatchNode extends GeometryGroupNode {
     }
     
     
-    private void gatherGeomerties(Map<Material, List<Geometry>> map, Spatial n, boolean rebatch) {
+    private void gatherGeometries(Map<Material, List<Geometry>> map, Spatial n, boolean rebatch) {
 
         if (n instanceof Geometry) {
 
@@ -304,7 +304,7 @@ public class BatchNode extends GeometryGroupNode {
                 if (child instanceof BatchNode) {
                     continue;
                 }
-                gatherGeomerties(map, child, rebatch);
+                gatherGeometries(map, child, rebatch);
             }
         }
 
@@ -319,7 +319,7 @@ public class BatchNode extends GeometryGroupNode {
         return null;
     }
 
-    private boolean isBatch(Spatial s) {
+    public final boolean isBatch(Spatial s) {
         for (Batch batch : batches.getArray()) {
             if (batch.geometry == s) {
                 return true;
@@ -336,9 +336,6 @@ public class BatchNode extends GeometryGroupNode {
      */
     @Override
     public void setMaterial(Material material) {
-//        for (Batch batch : batches.values()) {
-//            batch.geometry.setMaterial(material);
-//        }
         throw new UnsupportedOperationException("Unsupported for now, please set the material on the geoms before batching");
     }
 
@@ -356,74 +353,7 @@ public class BatchNode extends GeometryGroupNode {
             Batch b = batches.iterator().next();
             return b.geometry.getMaterial();
         }
-        return null;//material;
-    }
-
-//    /**
-//     * Sets the material to the a specific batch of this BatchNode
-//     * 
-//     * 
-//     * @param material the material to use for this geometry
-//     */   
-//    public void setMaterial(Material material,int batchIndex) {
-//        if (!batches.isEmpty()) {
-//            
-//        }
-//        
-//    }
-//
-//    /**
-//     * Returns the material that is used for the first batch of this BatchNode
-//     * 
-//     * use getMaterial(Material material,int batchIndex) to get a material from a specific batch
-//     * 
-//     * @return the material that is used for the first batch of this BatchNode
-//     * 
-//     * @see #setMaterial(com.jme3.material.Material) 
-//     */
-//    public Material getMaterial(int batchIndex) {
-//        if (!batches.isEmpty()) {
-//            Batch b = batches.get(batches.keySet().iterator().next());
-//            return b.geometry.getMaterial();
-//        }
-//        return null;//material;
-//    }
-    @Override
-    public void write(JmeExporter ex) throws IOException {
-        super.write(ex);
-        OutputCapsule oc = ex.getCapsule(this);
-//
-//        if (material != null) {
-//            oc.write(material.getAssetName(), "materialName", null);
-//        }
-//        oc.write(material, "material", null);
-
-    }
-
-    @Override
-    public void read(JmeImporter im) throws IOException {
-        super.read(im);
-        InputCapsule ic = im.getCapsule(this);
-
-
-//        material = null;
-//        String matName = ic.readString("materialName", null);
-//        if (matName != null) {
-//            // Material name is set,
-//            // Attempt to load material via J3M
-//            try {
-//                material = im.getAssetManager().loadMaterial(matName);
-//            } catch (AssetNotFoundException ex) {
-//                // Cannot find J3M file.
-//                logger.log(Level.FINE, "Could not load J3M file {0} for Geometry.",
-//                        matName);
-//            }
-//        }
-//        // If material is NULL, try to load it from the geometry
-//        if (material == null) {
-//            material = (Material) ic.readSavable("material", null);
-//        }
-
+        return null;
     }
 
     /**
@@ -494,7 +424,7 @@ public class BatchNode extends GeometryGroupNode {
             if (mode != null && mode != listMode) {
                 throw new UnsupportedOperationException("Cannot combine different"
                         + " primitive types: " + mode + " != " + listMode);
-            }            
+            }
             mode = listMode;
             if (mode == Mesh.Mode.Lines) {
                 if (lineWidth != 1f && listLineWidth != lineWidth) {
@@ -510,8 +440,7 @@ public class BatchNode extends GeometryGroupNode {
         outMesh.setMode(mode);
         outMesh.setLineWidth(lineWidth);
         if (totalVerts >= 65536) {
-            // make sure we create an UnsignedInt buffer so
-            // we can fit all of the meshes
+            // make sure we create an UnsignedInt buffer so we can fit all of the meshes
             formatForBuf[VertexBuffer.Type.Index.ordinal()] = VertexBuffer.Format.UnsignedInt;
         } else {
             formatForBuf[VertexBuffer.Type.Index.ordinal()] = VertexBuffer.Format.UnsignedShort;
@@ -733,7 +662,6 @@ public class BatchNode extends GeometryGroupNode {
     }
 
     protected class Batch {
-
         /**
          * update the batchesByGeom map for this batch with the given List of geometries
          * @param list 
@@ -745,7 +673,7 @@ public class BatchNode extends GeometryGroupNode {
                 }
             }
         }
-        Geometry geometry;        
+        Geometry geometry;
     }
 
     protected void setNeedsFullRebatch(boolean needsFullRebatch) {
@@ -771,4 +699,15 @@ public class BatchNode extends GeometryGroupNode {
         }
         return clone;
     }
+    
+    @Override
+    public int collideWith(Collidable other, CollisionResults results) {
+        int total = 0;
+        for (Spatial child : children.getArray()){
+            if (!isBatch(child)) {
+                total += child.collideWith(other, results);
+            }
+        }
+        return total;
+    }
 }