नीचे दिए गए कोड में मैंने कुछ ऐसा उदाहरण दिया है जो मैं करना चाहता हूं। मेरे पास कैमरा है और मैं चाहता हूं कि जब भी वह किसी एक बॉक्स से टकराए तो मैं उसे रोकना बंद कर दूं, मैं यह कैसे करूं?
public class Main extends ApplicationAdapter {
private final ModelBuilder builder = new ModelBuilder();
private final Environment environment = new Environment();
private ModelBatch modelBatch;
private PerspectiveCamera camera;
private Model model;
private ArrayList<ModelInstance> instance = new ArrayList<ModelInstance>();
private FirstPersonCameraController controller;
private BoundingBox[] boxBounds = new BoundingBox[1000];
private BoundingBox cameraBox = new BoundingBox();
private Vector3 cameraSpeed = new Vector3();
private Vector3 oldCameraPos = new Vector3();
private Vector3 newCameraPos = new Vector3();
@Override
public void create() {
modelBatch = new ModelBatch();
//build the camera
camera = new PerspectiveCamera(67, graphics.getWidth(), graphics.getHeight());
camera.position.set(0f, 10f, 0f);
camera.lookAt(0, 10, 0);
camera.near = 1f;
camera.far = 1000f;
camera.update();
//build all the boxes
for (int i = 0; i < 1000; i++) {
model = builder.createBox(
(float) Math.random() * 50,
(float) Math.random() * 50,
(float) Math.random() * 50,
new Material(ColorAttribute.createDiffuse(
(float) random(),
(float) random(),
(float) random(), 1)
), Position | Normal);
instance.add(new ModelInstance(model));
instance.get(i).transform.setToTranslation(
(float) random() * 1000 - 500,
(float) random() * 1000,
(float) random() * 1000 - 500);
boxBounds[i] = new BoundingBox();
boxBounds[i] = model.calculateBoundingBox(boxBounds[i]);
}
//build the ground
model = builder.createBox(700f, 1f, 700f, new Material(ColorAttribute.createDiffuse(Color.GREEN)), Position | Normal);
ModelInstance ground = new ModelInstance(model);
instance.add(ground);
//build the center
model = builder.createBox(5f, 5f, 5f, new Material(ColorAttribute.createDiffuse(Color.RED)), Position | Normal);
ModelInstance center = new ModelInstance(model);
instance.add(center);
//code the lights here
DirectionalLight light = new DirectionalLight().set(255, 255, 255,
(float) random(),
(float) random(),
(float) random());
//set up the enviroment
environment.set(new ColorAttribute(AmbientLight, 255f, 255f, 255f, 1f));
environment.add(light);
//set up the camera controller
controller = new FirstPersonCameraController(camera);
controller.setDegreesPerPixel(0.25f);
controller.setVelocity(20);
input.setInputProcessor(controller);
}
@Override
public void render() {
//set up OpenGL
gl.glViewport(0, 0, graphics.getWidth(), graphics.getHeight());
gl.glEnable(GL_BLEND);
gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gl.glClearColor(0, 0, 0, 0);
//render the modelInstances
modelBatch.begin(camera);
modelBatch.render(instance, environment);
modelBatch.end();
controller.update();
if (input.isKeyPressed(Input.Keys.R)) {
camera.lookAt(0, 0, 0);
}
cameraSpeed = newCameraPos.sub(oldCameraPos);
cameraBox = new BoundingBox(new Vector3(camera.position.x,
camera.position.y,
camera.position.z),
new Vector3(camera.position.x + 10,
camera.position.y + 10,
camera.position.z + 10));
for (int i = 0; i < 1000; i++) {
if (cameraBox.contains(boxBounds[i])) {
camera.position.x = camera.position.x - cameraSpeed.x;
camera.position.y = camera.position.y - cameraSpeed.y;
camera.position.z = camera.position.z - cameraSpeed.z;
}
}
System.out.println(cameraSpeed.x + " " + cameraSpeed.y + " " + cameraSpeed.z);
}
@Override
public void dispose() {
modelBatch.dispose();
model.dispose();
}
}
परिणाम:
आप पता लगा सकते हैं कि क्या वह एक बॉक्स पर है (यदि उसका y <box.y && y> box.y + box.height है और x और z के लिए लगभग ऐसा ही करें, यदि आप चाहते हैं, तो उसके वेग से उसका Y बदल दें)
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आर्टिकल्स