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package jme3test.collision;
import com.jme3.app.SimpleApplication;
import com.jme3.collision.CollisionResult;
import com.jme3.collision.CollisionResults;
import com.jme3.light.DirectionalLight;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Quaternion;
import com.jme3.math.Ray;
import com.jme3.math.Vector3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.scene.debug.Arrow;
import com.jme3.scene.shape.Box;
public class TestMousePick extends SimpleApplication {
public static void main(String[] args) {
TestMousePick app = new TestMousePick();
app.start();
}
Node shootables;
Geometry mark;
@Override
public void simpleInitApp() {
flyCam.setEnabled(false);
initMark(); // a red sphere to mark the hit
/** create four colored boxes and a floor to shoot at: */
shootables = new Node("Shootables");
rootNode.attachChild(shootables);
shootables.attachChild(makeCube("a Dragon", -2f, 0f, 1f));
shootables.attachChild(makeCube("a tin can", 1f, -2f, 0f));
shootables.attachChild(makeCube("the Sheriff", 0f, 1f, -2f));
shootables.attachChild(makeCube("the Deputy", 1f, 0f, -4f));
shootables.attachChild(makeFloor());
shootables.attachChild(makeCharacter());
}
@Override
public void simpleUpdate(float tpf){
Vector3f origin = cam.getWorldCoordinates(inputManager.getCursorPosition(), 0.0f);
Vector3f direction = cam.getWorldCoordinates(inputManager.getCursorPosition(), 0.3f);
direction.subtractLocal(origin).normalizeLocal();
Ray ray = new Ray(origin, direction);
CollisionResults results = new CollisionResults();
shootables.collideWith(ray, results);
// System.out.println("----- Collisions? " + results.size() + "-----");
// for (int i = 0; i < results.size(); i++) {
// // For each hit, we know distance, impact point, name of geometry.
// float dist = results.getCollision(i).getDistance();
// Vector3f pt = results.getCollision(i).getWorldContactPoint();
// String hit = results.getCollision(i).getGeometry().getName();
// System.out.println("* Collision #" + i);
// System.out.println(" You shot " + hit + " at " + pt + ", " + dist + " wu away.");
// }
if (results.size() > 0) {
CollisionResult closest = results.getClosestCollision();
mark.setLocalTranslation(closest.getContactPoint());
Quaternion q = new Quaternion();
q.lookAt(closest.getContactNormal(), Vector3f.UNIT_Y);
mark.setLocalRotation(q);
rootNode.attachChild(mark);
} else {
rootNode.detachChild(mark);
}
}
/** A cube object for target practice */
protected Geometry makeCube(String name, float x, float y, float z) {
Box box = new Box(1, 1, 1);
Geometry cube = new Geometry(name, box);
cube.setLocalTranslation(x, y, z);
Material mat1 = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat1.setColor("Color", ColorRGBA.randomColor());
cube.setMaterial(mat1);
return cube;
}
/** A floor to show that the "shot" can go through several objects. */
protected Geometry makeFloor() {
Box box = new Box(15, .2f, 15);
Geometry floor = new Geometry("the Floor", box);
floor.setLocalTranslation(0, -4, -5);
Material mat1 = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat1.setColor("Color", ColorRGBA.Gray);
floor.setMaterial(mat1);
return floor;
}
/** A red ball that marks the last spot that was "hit" by the "shot". */
protected void initMark() {
Arrow arrow = new Arrow(Vector3f.UNIT_Z.mult(2f));
//Sphere sphere = new Sphere(30, 30, 0.2f);
mark = new Geometry("BOOM!", arrow);
//mark = new Geometry("BOOM!", sphere);
Material mark_mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mark_mat.getAdditionalRenderState().setLineWidth(3);
mark_mat.setColor("Color", ColorRGBA.Red);
mark.setMaterial(mark_mat);
}
protected Spatial makeCharacter() {
// load a character from jme3test-test-data
Spatial golem = assetManager.loadModel("Models/Oto/Oto.mesh.xml");
golem.scale(0.5f);
golem.setLocalTranslation(-1.0f, -1.5f, -0.6f);
// We must add a light to make the model visible
DirectionalLight sun = new DirectionalLight();
sun.setDirection(new Vector3f(-0.1f, -0.7f, -1.0f).normalizeLocal());
golem.addLight(sun);
return golem;
}
}