Endless terrain in jMonkey using TerrainGrid fails to render
- by nightcrawler23
I have started to learn game development using jMonkey engine. I am able to create single tile of terrain using TerrainQuad but as the next step I'm stuck at making it infinite. I have gone through the wiki and want to use the TerrainGrid class but my code does not seem to work. I have looked around on the web and searched other forums but cannot find any other code example to help.
I believe in the below code, ImageTileLoader returns an image which is the heightmap for that tile. I have modified it to return the same image every time. But all I see is a black window. The Namer method is not even called.
terrain = new TerrainGrid("terrain", patchSize, 513, new ImageTileLoader(assetManager, new Namer() {
public String getName(int x, int y) {
//return "Scenes/TerrainMountains/terrain_" + x + "_" + y + ".png";
System.out.println("X = " + x + ", Y = " + y);
return "Textures/heightmap.png";
}
}));
These are my sources:
jMonkeyEngine 3 Tutorial (10) - Hello Terrain
TerrainGridTest.java
ImageTileLoader
This is the result when i use TerrainQuad: ,
My full code:
// Sample 10 - How to create fast-rendering terrains from heightmaps, and how to
// use texture splatting to make the terrain look good.
public class HelloTerrain extends SimpleApplication {
private TerrainQuad terrain;
Material mat_terrain;
private float grassScale = 64;
private float dirtScale = 32;
private float rockScale = 64;
public static void main(String[] args) {
HelloTerrain app = new HelloTerrain();
app.start();
}
private FractalSum base;
private PerturbFilter perturb;
private OptimizedErode therm;
private SmoothFilter smooth;
private IterativeFilter iterate;
@Override
public void simpleInitApp() {
flyCam.setMoveSpeed(200);
initMaterial();
AbstractHeightMap heightmap = null;
Texture heightMapImage = assetManager.loadTexture("Textures/heightmap.png");
heightmap = new ImageBasedHeightMap(heightMapImage.getImage());
heightmap.load();
int patchSize = 65;
//terrain = new TerrainQuad("my terrain", patchSize, 513, heightmap.getHeightMap()); // * This Works but below doesnt work*
terrain = new TerrainGrid("terrain", patchSize, 513, new ImageTileLoader(assetManager, new Namer() {
public String getName(int x, int y) {
//return "Scenes/TerrainMountains/terrain_" + x + "_" + y + ".png";
System.out.println("X = " + x + ", Y = " + y);
return "Textures/heightmap.png";
// set to return the sme hieghtmap image.
}
}));
terrain.setMaterial(mat_terrain);
terrain.setLocalTranslation(0,-100, 0);
terrain.setLocalScale(2f, 1f, 2f);
rootNode.attachChild(terrain);
TerrainLodControl control = new TerrainLodControl(terrain, getCamera());
terrain.addControl(control);
}
public void initMaterial() {
// TERRAIN TEXTURE material
this.mat_terrain = new Material(this.assetManager, "Common/MatDefs/Terrain/HeightBasedTerrain.j3md");
// GRASS texture
Texture grass = this.assetManager.loadTexture("Textures/white.png");
grass.setWrap(WrapMode.Repeat);
this.mat_terrain.setTexture("region1ColorMap", grass);
this.mat_terrain.setVector3("region1", new Vector3f(-10, 0, this.grassScale));
// DIRT texture
Texture dirt = this.assetManager.loadTexture("Textures/white.png");
dirt.setWrap(WrapMode.Repeat);
this.mat_terrain.setTexture("region2ColorMap", dirt);
this.mat_terrain.setVector3("region2", new Vector3f(0, 900, this.dirtScale));
Texture building = this.assetManager.loadTexture("Textures/building.png");
building.setWrap(WrapMode.Repeat);
this.mat_terrain.setTexture("slopeColorMap", building);
this.mat_terrain.setFloat("slopeTileFactor", 32);
this.mat_terrain.setFloat("terrainSize", 513);
}
}
