Hi guys,
I need some help, my Ray cast and my TerrainQuad do not collide.
I’ve got a class Map in which I’ve copied this method from TerrainTestModifyHeight :
[java]
private void createTerrain() {
// First, we load up our textures and the heightmap texture for the terrain
// TERRAIN TEXTURE material
Material matTerrain = new Material(assetManager, “Common/MatDefs/Terrain/TerrainLighting.j3md”);
matTerrain.setBoolean(“useTriPlanarMapping”, false);
matTerrain.setBoolean(“WardIso”, true);
matTerrain.setFloat(“Shininess”, 0);
// ALPHA map (for splat textures)
matTerrain.setTexture(“AlphaMap”, assetManager.loadTexture(“Textures/Terrain/splat/alphamap.png”));
// GRASS texture
Texture grass = assetManager.loadTexture(“Textures/Terrain/splat/grass.jpg”);
grass.setWrap(WrapMode.Repeat);
matTerrain.setTexture(“DiffuseMap”, grass);
matTerrain.setFloat(“DiffuseMap_0_scale”, tileScale);
// DIRT texture
Texture dirt = assetManager.loadTexture(“Textures/Terrain/splat/dirt.jpg”);
dirt.setWrap(WrapMode.Repeat);
matTerrain.setTexture(“DiffuseMap_1”, dirt);
matTerrain.setFloat(“DiffuseMap_1_scale”, tileScale);
// ROCK texture
Texture rock = assetManager.loadTexture(“Textures/Terrain/splat/road.jpg”);
rock.setWrap(WrapMode.Repeat);
matTerrain.setTexture(“DiffuseMap_2”, rock);
matTerrain.setFloat(“DiffuseMap_2_scale”, tileScale);
float [] floatMap = new float[size];
// CREATE THE TERRAIN
this.terrain = new TerrainQuad(“terrain”, 65, 513, floatMap);
this.terrain.setMaterial(matTerrain);
this.terrain.setLocalTranslation(0, 0, 0);
app.getRootNode().attachChild(this.terrain);
}
[/java]
And then i’ve got an AbstractAppState EditTerrainHeight in which I’m calling
[java]
update(float tpf) {
Vector3f intersection = getWorldIntersection(); }
[/java]
[java]
private Vector3f getWorldIntersection() {
Vector2f click2d = app.getInputManager().getCursorPosition();
Vector3f click3d = app.getCamera().getWorldCoordinates(new Vector2f(click2d.x, click2d.y), 0f).clone();
Vector3f dir = app.getCamera().getWorldCoordinates(new Vector2f(click2d.x, click2d.y), 1f).subtractLocal(click3d);
Ray ray = new Ray(click3d, dir);
CollisionResults results = new CollisionResults();
int numCollisions = map.getTerrain().collideWith(ray, results);
if (numCollisions > 0) {
CollisionResult hit = results.getClosestCollision();
return hit.getContactPoint();
}
return null;
}
[/java]
This doesn’t work.
If i do app.getRootNode().collideWith(ray, results); it only collides with the sky.
If i put my getWorldIntersection() Method and all that stuff needed for mouspicking into TerrainTestModifyHeight everything works fine.
Any idea what I’m doing wrong?
normalize your ray
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