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POHow to get an objects parameter with collision detection?
 

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  1. POHow to get an objects parameter with collision detection?
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    <p>I started working on a game with jMonkey. I just created an object from the class "Entity" I made myself which holds an 3D Model, Physics and so on. Here is the code:</p> <pre><code>package mygame.entities; import com.jme3.asset.AssetManager; import com.jme3.bullet.BulletAppState; import com.jme3.bullet.control.RigidBodyControl; import com.jme3.renderer.queue.RenderQueue.ShadowMode; import com.jme3.scene.Geometry; import com.jme3.scene.Node; import com.jme3.scene.Spatial; public class Entity { private AssetManager assetManager; private Node rootNode; public Spatial model; private Geometry object; private String itsName; private int life; private boolean destroyAble; private boolean destroyed; public Entity(BulletAppState bas, AssetManager manager, Node rootNode, String name, int lifes, boolean destroyable, float x, float y, float z) { itsName = name; life = lifes; destroyAble = destroyable; model = manager.loadModel("Models/woodlog.j3o"); model.setLocalTranslation(x, y, z); model.setShadowMode(ShadowMode.Cast); model.setName(name); model.setUserData("lifes", 3); RigidBodyControl body = new RigidBodyControl(2); model.addControl(body); bas.getPhysicsSpace().add(body); rootNode.attachChild(model); } public String getName() { return itsName; } public int getLife() { return life; } public void setLife(int lifes) { life = lifes; } public boolean isDestroyable() { return destroyAble; } public boolean isDestroyed() { if (destroyAble &amp;&amp; life &lt;= 0) { destroyed = true; } else { destroyed = false; } return destroyed; } } </code></pre> <p>With help from the tutorial on the jMonkey website I managed to implement the "shooting". A simple ray that follows my cam direction. Here is the code for what happens if it collides with something:</p> <pre><code>} else if (binding.equals("Fire") &amp;&amp; !isPressed) { // 1. Reset results list. CollisionResults results = new CollisionResults(); // 2. Aim the ray from cam loc to cam direction. Ray ray = new Ray(cam.getLocation(), cam.getDirection()); // 3. Collect intersections between Ray and Shootables in results list. shootables.collideWith(ray, results); // 4. Print results. System.out.println(results.size()); if (results.size() &gt;= 1) { System.out.println(results.getCollision(0).getGeometry().getName()); //Material material = results.getCollision(0).getGeometry().getMaterial(); //material.setColor("Color", ColorRGBA.randomColor()); } } </code></pre> <p>So that works just fine! This line:</p> <pre><code>System.out.println(results.getCollision(0).getGeometry().getName()); </code></pre> <p>displays the name of that "Geometry" i just shot. But the problem now is, that my object is not a Geometry! And I dont know how I can implement that I get the name of this object anyway. The best way for me would be if the results.getCollision(0) would return my object so I could just say "object.getName();"</p> <p>Does anyone know how I can do that? I would be very grateful for any ideas :) cheers - Daniel </p>
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      1. POHow to get an objects parameter with collision detection?
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    1. COyou should consider to modifiy your title which is absolutly not clear.
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      1. POHow to get an objects parameter with collision detection?
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    2. COOnce you've shot the object, you should find its name tattooed on its ear. :-)
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    3. CO@Kiwy - It is perfectly clear what he is talking about. :-) :-)
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