/*******************************************************************************
* 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.
******************************************************************************/
/*
* Copyright 2010 Mario Zechner (contact@badlogicgames.com), Nathan Sweet (admin@esotericsoftware.com)
*
* 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.box2d;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.BodyDef.BodyType;
import com.badlogic.gdx.physics.box2d.CircleShape;
import com.badlogic.gdx.physics.box2d.Contact;
import com.badlogic.gdx.physics.box2d.ContactImpulse;
import com.badlogic.gdx.physics.box2d.ContactListener;
import com.badlogic.gdx.physics.box2d.EdgeShape;
import com.badlogic.gdx.physics.box2d.Fixture;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.Manifold;
import com.badlogic.gdx.physics.box2d.PolygonShape;
import com.badlogic.gdx.physics.box2d.World;
public class ContactListenerTest extends Box2DTest implements ContactListener {
@Override
protected void createWorld (World world) {
world.setContactListener(this);
{
BodyDef bd = new BodyDef();
Body ground = world.createBody(bd);
EdgeShape shape = new EdgeShape();
shape.set(new Vector2(-20, 0), new Vector2(20, 0));
ground.createFixture(shape, 0);
shape.dispose();
}
{
BodyDef bd = new BodyDef();
Body ground = world.createBody(bd);
EdgeShape shape = new EdgeShape();
shape.setRadius(0);
shape.set(new Vector2(-8, 1), new Vector2(-6, 1));
ground.createFixture(shape, 0);
shape.set(new Vector2(-6, 1), new Vector2(-4, 1));
ground.createFixture(shape, 0);
shape.set(new Vector2(-4, 1), new Vector2(-2, 1));
ground.createFixture(shape, 0);
shape.dispose();
}
{
BodyDef bd = new BodyDef();
Body ground = world.createBody(bd);
PolygonShape shape = new PolygonShape();
shape.setAsBox(1, 1, new Vector2(4, 3), 0);
ground.createFixture(shape, 0);
shape.setAsBox(1, 1, new Vector2(6, 3), 0);
ground.createFixture(shape, 0);
shape.setAsBox(1, 1, new Vector2(8, 3), 0);
ground.createFixture(shape, 0);
shape.dispose();
}
{
BodyDef bd = new BodyDef();
Body ground = world.createBody(bd);
EdgeShape shape = new EdgeShape();
float d = 2 * 2 * 0.005f;
shape.setRadius(0);
shape.set(new Vector2(-1 + d, 3), new Vector2(1 - d, 3));
ground.createFixture(shape, 0);
shape.set(new Vector2(1, 3 + d), new Vector2(1, 5 - d));
ground.createFixture(shape, 0);
shape.set(new Vector2(1 - d, 5), new Vector2(-1 + d, 5));
ground.createFixture(shape, 0);
shape.set(new Vector2(-1, 5 - d), new Vector2(-1, 3 + d));
ground.createFixture(shape, 0);
shape.dispose();
}
{
BodyDef bd = new BodyDef();
bd.position.set(-3, 20);
bd.type = BodyType.DynamicBody;
bd.fixedRotation = true;
bd.allowSleep = false;
Body body = world.createBody(bd);
PolygonShape shape = new PolygonShape();
shape.setAsBox(0.5f, 0.5f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
body.createFixture(fd);
shape.dispose();
}
{
BodyDef bd = new BodyDef();
bd.position.set(-5, 25);
bd.type = BodyType.DynamicBody;
bd.fixedRotation = true;
bd.allowSleep = false;
Body body = world.createBody(bd);
float angle = 0;
float delta = (float)Math.PI / 3;
Vector2[] vertices = new Vector2[6];
for (int i = 0; i < 6; i++) {
vertices[i] = new Vector2(0.5f * (float)Math.cos(angle), 0.5f * (float)Math.sin(angle));
angle += delta;
}
PolygonShape shape = new PolygonShape();
shape.set(vertices);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
body.createFixture(fd);
shape.dispose();
}
{
BodyDef bd = new BodyDef();
bd.position.set(3, 30);
bd.type = BodyType.DynamicBody;
bd.fixedRotation = true;
bd.allowSleep = false;
Body body = world.createBody(bd);
CircleShape shape = new CircleShape();
shape.setRadius(0.5f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
fd.density = 20.0f;
body.createFixture(fd);
shape.dispose();
}
}
@Override
public void beginContact (Contact contact) {
System.out.println(String.format("beginContact() addr=%d", getContactAddr(contact)));
System.out.println(String.format("beginContact() addrA=%d, addrB=%d",
getFixtureAddrA(contact),
getFixtureAddrB(contact)));
System.out.println(String.format("beginContact() fixA=%s, fixB=%s",
contact.getFixtureA(),
contact.getFixtureB()));
final Body toRemove = contact.getFixtureA().getBody().getType() == BodyType.DynamicBody ?
contact.getFixtureA().getBody() :
contact.getFixtureB().getBody();
Gdx.app.postRunnable(new Runnable() {
@Override
public void run () {
world.destroyBody(toRemove);
}
});
}
@Override
public void endContact (Contact contact) {
System.out.println(String.format(" endContact() addr=%d", getContactAddr(contact)));
System.out.println(String.format(" endContact() addrA=%d, addrB=%d",
getFixtureAddrA(contact),
getFixtureAddrB(contact)));
System.out.println(String.format(" endContact() fixA=%s, fixB=%s",
contact.getFixtureA(),
contact.getFixtureB()));
final Fixture fixtureA = contact.getFixtureA();
final Fixture fixtureB = contact.getFixtureB();
if(fixtureA == null || fixtureB == null) {
throw new RuntimeException("No fixture found.");
}
}
@Override
public void preSolve (Contact contact, Manifold oldManifold) {
// TODO Auto-generated method stub
}
@Override
public void postSolve (Contact contact, ContactImpulse impulse) {
// TODO Auto-generated method stub
}
public long getFixtureAddrA(Contact contact) {
try {
long addr = getContactAddr(contact);
Method getFixtureA = contact.getClass().getDeclaredMethod("jniGetFixtureA", long.class);
getFixtureA.setAccessible(true);
return (Long) getFixtureA.invoke(contact, addr);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
public long getFixtureAddrB(Contact contact) {
try {
long addr =getContactAddr(contact);
Method getFixtureB = contact.getClass().getDeclaredMethod("jniGetFixtureB", long.class);
getFixtureB.setAccessible(true);
return (Long) getFixtureB.invoke(contact, addr);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
public long getContactAddr(Contact contact) {
try {
Field addrField = contact.getClass().getDeclaredField("addr");
addrField.setAccessible(true);
return addrField.getLong(contact);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
}