Map: refactored populating of map objects to use the new procedural blocks.

src/roadtrip/RoadTrip.java

@@ -90,70 +90,8 @@ public class RoadTrip extends GameApplication implements ActionListener {
         al.setColor(new ColorRGBA(0.5f, 0.5f, 0.5f, 1.0f));
         rootNode.addLight(al);
 
-        gameWorldState = new GameWorldState();
+        gameWorldState = new GameWorldState(1L);
-        gameWorldView = GameWorldView.create(gameWorldState, assetManager, cam, rootNode);
+        gameWorldView = GameWorldView.create(gameWorldState, assetManager, cam, rootNode, getPhysicsSpace());
-        final TerrainGrid terrainGrid = gameWorldView.terrain.terrainGrid;
-        terrainGrid.addListener(new TerrainGridListener() {
-
-            @Override
-            public void gridMoved(Vector3f newCenter) {
-            }
-
-            @Override
-            public void tileAttached(Vector3f cell, TerrainQuad quad) {
-                while(quad.getControl(RigidBodyControl.class)!=null){
-                    quad.removeControl(RigidBodyControl.class);
-                }
-                quad.addControl(new RigidBodyControl(new HeightfieldCollisionShape(quad.getHeightMap(), terrainGrid.getLocalScale()), 0));
-                getPhysicsSpace().add(quad);
-                
-                String treesKey = "trees-" + quad.getName();
-                Spatial treesOld = rootNode.getChild(treesKey);
-                if (treesOld != null) {
-                    getPhysicsSpace().removeAll(treesOld);
-                    treesOld.removeFromParent();
-                }
-                
-                Node trees = new Node(treesKey);
-                Random quadRand = new Random(treesKey.hashCode());
-                Spatial treeModel = assetManager.loadModel("Models/tree.j3o");
-                System.out.println("Grid @ " + terrainGrid.getLocalTranslation() + " s " + terrainGrid.getLocalScale());
-                System.out.println("Quad " + quad.getName() + " @ " + quad.getLocalTranslation());
-                float cellSize = terrainGrid.getPatchSize() * terrainGrid.getLocalScale().x * 2f;
-                for (int i = 0; i < quadRand.nextInt(1000); i++) {
-                    Vector2f pos = new Vector2f((quadRand.nextFloat() - 0.5f) * cellSize, (quadRand.nextFloat() - 0.5f) * cellSize)
-                            .addLocal(quad.getWorldTranslation().x, quad.getWorldTranslation().z);
-                    float height = quad.getHeight(pos);
-                    Vector3f location = new Vector3f(pos.x, height, pos.y)
-                            .addLocal(terrainGrid.getWorldTranslation());
-                    System.out.println("Tree " + i + ": " + location);
-                    Spatial treeInstance = treeModel.clone();
-                    treeInstance.setLocalTranslation(location);
-                    //RigidBodyControl control = treeInstance.getControl(RigidBodyControl.class);
-                    RigidBodyControl control = new RigidBodyControl(new ConeCollisionShape(1f, 5f), 0f);
-                    if (control != null) {
-                        treeInstance.addControl(control);
-                        control.setPhysicsLocation(location);
-                        getPhysicsSpace().add(control);
-                    }
-                    trees.attachChild(treeInstance);
-                }
-                rootNode.attachChild(trees);
-            }
-
-            @Override
-            public void tileDetached(Vector3f cell, TerrainQuad quad) {
-                if (quad.getControl(RigidBodyControl.class) != null) {
-                    getPhysicsSpace().remove(quad);
-                    quad.removeControl(RigidBodyControl.class);
-                    String treesKey = "trees-" + quad.getName();
-                    Spatial trees = rootNode.getChild(treesKey);
-                    getPhysicsSpace().removeAll(trees);
-                    trees.removeFromParent();
-                }
-            }
-
-        });
 
         addCar();
         addCar();

src/roadtrip/model/AbstractProceduralBlock.java

@@ -39,7 +39,7 @@ public abstract class AbstractProceduralBlock implements ProceduralBlock
 	{
 		if (subBlockClass == null) throw new NullPointerException("subBlockClass");
 		try {
-			Constructor<T> constructor = subBlockClass.getConstructor(Long.class);
+			Constructor<T> constructor = subBlockClass.getConstructor(Long.TYPE);
 			return constructor.newInstance(getSubBlockSeed(subBlockKey));
 		} catch (NoSuchMethodException e) {
 			throw new IllegalArgumentException("Class " + subBlockClass + " does not have the default constructor with a single 'long' parameter.", e);

src/roadtrip/model/ProceduralMapQuadBlock.java

@@ -0,0 +1,12 @@
+package roadtrip.model;
+
+/**
+ * Created by dejvino on 21.01.2017.
+ */
+public class ProceduralMapQuadBlock extends AbstractProceduralBlock
+{
+	public ProceduralMapQuadBlock(long seed)
+	{
+		super(seed);
+	}
+}

src/roadtrip/view/GameWorldView.java

@@ -1,12 +1,16 @@
 package roadtrip.view;
 
 import com.jme3.asset.AssetManager;
+import com.jme3.bullet.PhysicsSpace;
+import com.jme3.bullet.collision.shapes.ConeCollisionShape;
 import com.jme3.bullet.collision.shapes.HeightfieldCollisionShape;
 import com.jme3.bullet.control.RigidBodyControl;
 import com.jme3.material.Material;
+import com.jme3.math.Vector2f;
 import com.jme3.math.Vector3f;
 import com.jme3.renderer.Camera;
 import com.jme3.scene.Node;
+import com.jme3.scene.Spatial;
 import com.jme3.terrain.geomipmap.*;
 import com.jme3.terrain.geomipmap.grid.FractalTileLoader;
 import com.jme3.terrain.geomipmap.lodcalc.DistanceLodCalculator;
@@ -19,31 +23,36 @@ import com.jme3.terrain.noise.filter.SmoothFilter;
 import com.jme3.terrain.noise.fractal.FractalSum;
 import com.jme3.terrain.noise.modulator.NoiseModulator;
 import com.jme3.texture.Texture;
+import roadtrip.model.ProceduralMapQuadBlock;
 import roadtrip.model.TerrainDataProvider;
 import roadtrip.view.model.GameWorldState;
 
+import java.util.Random;
+
 /**
  * Created by dejvino on 14.01.2017.
  */
 public class GameWorldView {
 
-    private GameWorldState state;
+    private final GameWorldState state;
 
-    private AssetManager assetManager;
+    private final AssetManager assetManager;
-    private Camera camera;
+    private final Camera camera;
-    private Node rootNode;
+    private final Node rootNode;
+    private final PhysicsSpace physicsSpace;
 
     public TerrainView terrain = new TerrainView(new TerrainDataProvider());
 
-    public GameWorldView(GameWorldState gameWorldState, AssetManager assetManager, Camera camera, Node rootNode) {
+    public GameWorldView(GameWorldState gameWorldState, AssetManager assetManager, Camera camera, Node rootNode, PhysicsSpace physicsSpace) {
         this.state = gameWorldState;
         this.assetManager = assetManager;
         this.camera = camera;
         this.rootNode = rootNode;
+        this.physicsSpace = physicsSpace;
     }
 
-    public static GameWorldView create(GameWorldState gameWorldState, AssetManager assetManager, Camera camera, Node rootNode) {
+    public static GameWorldView create(GameWorldState gameWorldState, AssetManager assetManager, Camera camera, Node rootNode, PhysicsSpace physicsSpace) {
-        GameWorldView gameWorldView = new GameWorldView(gameWorldState, assetManager, camera, rootNode);
+        GameWorldView gameWorldView = new GameWorldView(gameWorldState, assetManager, camera, rootNode, physicsSpace);
         gameWorldView.initialize();
         return gameWorldView;
     }
@@ -134,5 +143,88 @@ public class GameWorldView {
         TerrainLodControl control = new TerrainGridLodControl(terrain.terrainGrid, camera);
         control.setLodCalculator(new DistanceLodCalculator(64 + 1, 2.7f)); // patch size, and a multiplier
         terrain.terrainGrid.addControl(control);
+
+        final TerrainGrid terrainGrid = terrain.terrainGrid;
+        terrainGrid.addListener(new TerrainGridListener() {
+
+            @Override
+            public void gridMoved(Vector3f newCenter) {
             }
+
+            @Override
+            public void tileAttached(Vector3f cell, TerrainQuad quad) {
+                while(quad.getControl(RigidBodyControl.class)!=null){
+                    quad.removeControl(RigidBodyControl.class);
+                }
+                quad.addControl(new RigidBodyControl(new HeightfieldCollisionShape(quad.getHeightMap(), terrainGrid.getLocalScale()), 0));
+                physicsSpace.add(quad);
+
+                removeQuadObjectsNode(quad);
+
+                String quadObjectsNodeKey = getQuadObjectsNodeKey(quad);
+                Node objects = new Node(quadObjectsNodeKey);
+                populateQuadObjectsNode(quad, quadObjectsNodeKey, objects);
+                rootNode.attachChild(objects);
+            }
+
+            protected void populateQuadObjectsNode(TerrainQuad quad, String quadObjectsNodeKey, Node objects)
+            {
+                ProceduralMapQuadBlock mapQuadBlock = state.proceduralMap.getMapQuadBlock(quad.getName());
+
+                // TODO: move any access to the Random into the ProceduralMapQuadBlock
+                Random quadRand = mapQuadBlock.getBlockRandom();
+
+                // Generate trees
+                Spatial treeModel = assetManager.loadModel("Models/tree.j3o");
+                //System.out.println("Grid @ " + terrainGrid.getLocalTranslation() + " s " + terrainGrid.getLocalScale());
+                //System.out.println("Quad " + quad.getName() + " @ " + quad.getLocalTranslation());
+                float cellSize = terrainGrid.getPatchSize() * terrainGrid.getLocalScale().x * 2f;
+                for (int i = 0; i < quadRand.nextInt(1000); i++) {
+                    Vector2f pos = new Vector2f((quadRand.nextFloat() - 0.5f) * cellSize, (quadRand.nextFloat() - 0.5f) * cellSize)
+                            .addLocal(quad.getWorldTranslation().x, quad.getWorldTranslation().z);
+                    float height = quad.getHeight(pos);
+                    Vector3f location = new Vector3f(pos.x, height, pos.y)
+                            .addLocal(terrainGrid.getWorldTranslation());
+                    System.out.println("Tree " + i + ": " + location);
+                    Spatial treeInstance = treeModel.clone();
+                    treeInstance.setLocalTranslation(location);
+                    // TODO: physics from the model and not hard-coded
+                    //RigidBodyControl control = treeInstance.getControl(RigidBodyControl.class);
+                    RigidBodyControl control = new RigidBodyControl(new ConeCollisionShape(1f, 5f), 0f);
+                    if (control != null) {
+                        treeInstance.addControl(control);
+                        control.setPhysicsLocation(location);
+                        physicsSpace.add(control);
+                    }
+                    objects.attachChild(treeInstance);
+                }
+            }
+
+            @Override
+            public void tileDetached(Vector3f cell, TerrainQuad quad) {
+                if (quad.getControl(RigidBodyControl.class) != null) {
+                    physicsSpace.remove(quad);
+                    quad.removeControl(RigidBodyControl.class);
+                }
+                removeQuadObjectsNode(quad);
+            }
+
+            protected void removeQuadObjectsNode(TerrainQuad quad)
+            {
+                Spatial quadObjectsNodeOld = rootNode.getChild(getQuadObjectsNodeKey(quad));
+                if (quadObjectsNodeOld != null) {
+                    physicsSpace.removeAll(quadObjectsNodeOld);
+                    quadObjectsNodeOld.removeFromParent();
+                }
+            }
+
+            private String getQuadObjectsNodeKey(TerrainQuad quad)
+            {
+                return "Objects-" + quad.getName();
+            }
+
+        });
+
+    }
+
 }

src/roadtrip/view/model/GameWorldState.java

@@ -8,6 +8,13 @@ import java.util.List;
 /**
  * Created by dejvino on 14.01.2017.
  */
-public class GameWorldState {
+public class GameWorldState
-    public List<VehicleNode> vehicles = new LinkedList<>();
+{
+    public final ProceduralMapBlock proceduralMap;
+    public final List<VehicleNode> vehicles = new LinkedList<>();
+
+    public GameWorldState(long worldSeed)
+    {
+        this.proceduralMap = new ProceduralMapBlock(worldSeed);
+    }
 }

src/roadtrip/view/model/ProceduralMapBlock.java

@@ -0,0 +1,20 @@
+package roadtrip.view.model;
+
+import roadtrip.model.AbstractProceduralBlock;
+import roadtrip.model.ProceduralMapQuadBlock;
+
+/**
+ * Created by dejvino on 21.01.2017.
+ */
+public class ProceduralMapBlock extends AbstractProceduralBlock
+{
+	public ProceduralMapBlock(long seed)
+	{
+		super(seed);
+	}
+
+	public ProceduralMapQuadBlock getMapQuadBlock(String quadName)
+	{
+		return getSubBlock(quadName, ProceduralMapQuadBlock.class);
+	}
+}