/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.tests.bullet;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.PerspectiveCamera;
import com.badlogic.gdx.graphics.VertexAttributes.Usage;
import com.badlogic.gdx.graphics.g3d.Environment;
import com.badlogic.gdx.graphics.g3d.Material;
import com.badlogic.gdx.graphics.g3d.Model;
import com.badlogic.gdx.graphics.g3d.ModelBatch;
import com.badlogic.gdx.graphics.g3d.ModelInstance;
import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute;
import com.badlogic.gdx.graphics.g3d.attributes.FloatAttribute;
import com.badlogic.gdx.graphics.g3d.environment.DirectionalLight;
import com.badlogic.gdx.graphics.g3d.utils.ModelBuilder;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector3;
import com.badlogic.gdx.physics.bullet.collision.btBoxShape;
import com.badlogic.gdx.physics.bullet.collision.btBroadphaseInterface;
import com.badlogic.gdx.physics.bullet.collision.btCollisionConfiguration;
import com.badlogic.gdx.physics.bullet.collision.btCollisionDispatcher;
import com.badlogic.gdx.physics.bullet.collision.btCollisionShape;
import com.badlogic.gdx.physics.bullet.collision.btDbvtBroadphase;
import com.badlogic.gdx.physics.bullet.collision.btDefaultCollisionConfiguration;
import com.badlogic.gdx.physics.bullet.collision.btSphereShape;
import com.badlogic.gdx.physics.bullet.dynamics.btConstraintSolver;
import com.badlogic.gdx.physics.bullet.dynamics.btDiscreteDynamicsWorld;
import com.badlogic.gdx.physics.bullet.dynamics.btDynamicsWorld;
import com.badlogic.gdx.physics.bullet.dynamics.btRigidBody;
import com.badlogic.gdx.physics.bullet.dynamics.btRigidBody.btRigidBodyConstructionInfo;
import com.badlogic.gdx.physics.bullet.dynamics.btSequentialImpulseConstraintSolver;
import com.badlogic.gdx.physics.bullet.linearmath.btDefaultMotionState;
import com.badlogic.gdx.utils.Array;
/** @author xoppa */
public class BasicBulletTest extends BulletTest {
ModelBatch modelBatch;
Environment lights;
ModelBuilder modelBuilder = new ModelBuilder();
btCollisionConfiguration collisionConfiguration;
btCollisionDispatcher dispatcher;
btBroadphaseInterface broadphase;
btConstraintSolver solver;
btDynamicsWorld collisionWorld;
Vector3 gravity = new Vector3(0, -9.81f, 0);
Vector3 tempVector = new Vector3();
Array<Model> models = new Array<Model>();
Array<ModelInstance> instances = new Array<ModelInstance>();
Array<btDefaultMotionState> motionStates = new Array<btDefaultMotionState>();
Array<btRigidBodyConstructionInfo> bodyInfos = new Array<btRigidBodyConstructionInfo>();
Array<btCollisionShape> shapes = new Array<btCollisionShape>();
Array<btRigidBody> bodies = new Array<btRigidBody>();
@Override
public void create () {
super.create();
instructions = "Swipe for next test";
lights = new Environment();
lights.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.2f, 0.2f, 0.2f, 1.f));
lights.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -0.5f, -1f, -0.7f));
// Set up the camera
final float width = Gdx.graphics.getWidth();
final float height = Gdx.graphics.getHeight();
if (width > height)
camera = new PerspectiveCamera(67f, 3f * width / height, 3f);
else
camera = new PerspectiveCamera(67f, 3f, 3f * height / width);
camera.position.set(10f, 10f, 10f);
camera.lookAt(0, 0, 0);
camera.update();
// Create the model batch
modelBatch = new ModelBatch();
// Create some basic models
final Model groundModel = modelBuilder.createRect(
20f,
0f,
-20f,
-20f,
0f,
-20f,
-20f,
0f,
20f,
20f,
0f,
20f,
0,
1,
0,
new Material(ColorAttribute.createDiffuse(Color.BLUE), ColorAttribute.createSpecular(Color.WHITE), FloatAttribute
.createShininess(16f)), Usage.Position | Usage.Normal);
models.add(groundModel);
final Model sphereModel = modelBuilder.createSphere(
1f,
1f,
1f,
10,
10,
new Material(ColorAttribute.createDiffuse(Color.RED), ColorAttribute.createSpecular(Color.WHITE), FloatAttribute
.createShininess(64f)), Usage.Position | Usage.Normal);
models.add(sphereModel);
// Load the bullet library
BaseBulletTest.init(); // Normally use: Bullet.init();
// Create the bullet world
collisionConfiguration = new btDefaultCollisionConfiguration();
dispatcher = new btCollisionDispatcher(collisionConfiguration);
broadphase = new btDbvtBroadphase();
solver = new btSequentialImpulseConstraintSolver();
collisionWorld = new btDiscreteDynamicsWorld(dispatcher, broadphase, solver, collisionConfiguration);
collisionWorld.setGravity(gravity);
// Create the shapes and body construction infos
btCollisionShape groundShape = new btBoxShape(tempVector.set(20, 0, 20));
shapes.add(groundShape);
btRigidBodyConstructionInfo groundInfo = new btRigidBodyConstructionInfo(0f, null, groundShape, Vector3.Zero);
bodyInfos.add(groundInfo);
btCollisionShape sphereShape = new btSphereShape(0.5f);
shapes.add(sphereShape);
sphereShape.calculateLocalInertia(1f, tempVector);
btRigidBodyConstructionInfo sphereInfo = new btRigidBodyConstructionInfo(1f, null, sphereShape, tempVector);
bodyInfos.add(sphereInfo);
// Create the ground
ModelInstance ground = new ModelInstance(groundModel);
instances.add(ground);
btDefaultMotionState groundMotionState = new btDefaultMotionState();
groundMotionState.setWorldTransform(ground.transform);
motionStates.add(groundMotionState);
btRigidBody groundBody = new btRigidBody(groundInfo);
groundBody.setMotionState(groundMotionState);
bodies.add(groundBody);
collisionWorld.addRigidBody(groundBody);
// Create the spheres
for (float x = -10f; x <= 10f; x += 2f) {
for (float y = 5f; y <= 15f; y += 2f) {
for (float z = 0f; z <= 0f; z += 2f) {
ModelInstance sphere = new ModelInstance(sphereModel);
instances.add(sphere);
sphere.transform.trn(x + 0.1f * MathUtils.random(), y + 0.1f * MathUtils.random(), z + 0.1f * MathUtils.random());
btDefaultMotionState sphereMotionState = new btDefaultMotionState();
sphereMotionState.setWorldTransform(sphere.transform);
motionStates.add(sphereMotionState);
btRigidBody sphereBody = new btRigidBody(sphereInfo);
sphereBody.setMotionState(sphereMotionState);
bodies.add(sphereBody);
collisionWorld.addRigidBody(sphereBody);
}
}
}
}
@Override
public void render () {
Gdx.gl.glViewport(0, 0, Gdx.graphics.getBackBufferWidth(), Gdx.graphics.getBackBufferHeight());
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
fpsCounter.put(Gdx.graphics.getFramesPerSecond());
performanceCounter.tick();
performanceCounter.start();
((btDynamicsWorld)collisionWorld).stepSimulation(Gdx.graphics.getDeltaTime(), 5);
performanceCounter.stop();
int c = motionStates.size;
for (int i = 0; i < c; i++) {
motionStates.get(i).getWorldTransform(instances.get(i).transform);
}
modelBatch.begin(camera);
modelBatch.render(instances, lights);
modelBatch.end();
performance.setLength(0);
performance.append("FPS: ").append(fpsCounter.value).append(", Bullet: ")
.append((int)(performanceCounter.load.value * 100f)).append("%");
}
@Override
public void dispose () {
collisionWorld.dispose();
solver.dispose();
broadphase.dispose();
dispatcher.dispose();
collisionConfiguration.dispose();
for (btRigidBody body : bodies)
body.dispose();
bodies.clear();
for (btDefaultMotionState motionState : motionStates)
motionState.dispose();
motionStates.clear();
for (btCollisionShape shape : shapes)
shape.dispose();
shapes.clear();
for (btRigidBodyConstructionInfo info : bodyInfos)
info.dispose();
bodyInfos.clear();
modelBatch.dispose();
instances.clear();
for (Model model : models)
model.dispose();
models.clear();
}
}