jMonkeyEngine 3.0 Beginner's Guide

Time for action – simple water

A correctly simulated water surface reflects the scene around it—or to be more precise, it reflects everything attached to a specific scene node that you supply.

1. Make a copy of Main.java and name the class WaterSimple.java. Remember to also refactor the first line of the main() method to the following:

   WaterSimple app = new WaterSimple();

2. Create a class field for the node grouping the reflected scene.

   private Node reflectedScene;

3. Create a class field for the light's direction.

       private Vector3f lightDir = 
         new Vector3f(-0.39f, -0.32f, -0.74f);

4. Initialize a DirectionalLight.

     public void simpleInitApp() {
       DirectionalLight dl = new DirectionalLight();
       dl.setDirection(lightDir);
       rootNode.addLight(dl);

5. Initialize the reflectedScene ...