/*******************************************************************************
* 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.physics.bullet.collision.ContactListener;
import com.badlogic.gdx.utils.Array;
/** @author Xoppa */
public class ContactCallbackTest extends BaseBulletTest {
// ContactProcessedListenerXXX is called AFTER the contact is processed.
// Use ContactAddedListenerXXX to get a callback BEFORE the contact processed,
// which allows you to alter the objects/manifold before it's processed.
public static class TestContactProcessedListener extends ContactListener {
public Array<BulletEntity> entities;
int c = 0;
@Override
public void onContactProcessed (int userValue0, boolean match0, int userValue1, boolean match1) {
if (match0) {
final BulletEntity e = (BulletEntity)(entities.get(userValue0));
// Disable future callbacks for this entity
e.body.setContactCallbackFilter(0);
e.setColor(Color.RED);
Gdx.app.log("ContactCallbackTest", "Contact processed " + (++c));
}
if (match1) {
final BulletEntity e = (BulletEntity)(entities.get(userValue1));
// Disable future callbacks for this entity
e.body.setContactCallbackFilter(0);
e.setColor(Color.RED);
Gdx.app.log("ContactCallbackTest", "Contact processed " + (++c));
}
}
}
final int BOXCOUNT_X = 5;
final int BOXCOUNT_Y = 1;
final int BOXCOUNT_Z = 5;
final float BOXOFFSET_X = -5f;
final float BOXOFFSET_Y = 0.5f;
final float BOXOFFSET_Z = -5f;
TestContactProcessedListener contactProcessedListener;
@Override
public void create () {
super.create();
// Create the entities
world.add("ground", 0f, 0f, 0f).setColor(0.25f + 0.5f * (float)Math.random(), 0.25f + 0.5f * (float)Math.random(),
0.25f + 0.5f * (float)Math.random(), 1f);
for (int x = 0; x < BOXCOUNT_X; x++) {
for (int y = 0; y < BOXCOUNT_Y; y++) {
for (int z = 0; z < BOXCOUNT_Z; z++) {
final BulletEntity e = (BulletEntity)world.add("box", BOXOFFSET_X + x * 2f, BOXOFFSET_Y + y * 2f, BOXOFFSET_Z + z
* 2f);
e.setColor(0.5f + 0.5f * (float)Math.random(), 0.5f + 0.5f * (float)Math.random(),
0.5f + 0.5f * (float)Math.random(), 1f);
e.body.setContactCallbackFlag(2);
e.body.setContactCallbackFilter(2);
}
}
}
// Creating a contact listener, also enables that particular type of contact listener and sets it active.
contactProcessedListener = new TestContactProcessedListener();
contactProcessedListener.entities = world.entities;
}
@Override
public boolean tap (float x, float y, int count, int button) {
shoot(x, y);
return true;
}
@Override
public void dispose () {
// Deleting the active contact listener, also disables that particular type of contact listener.
if (contactProcessedListener != null) contactProcessedListener.dispose();
contactProcessedListener = null;
super.dispose();
}
}