我有两个身体，都是动态的，其中一个我已经关闭了重力，只有当它被我的另一个身体击中时才想打开它。我知道我可以设置自己的联系人侦听器，但我想指定一个动作，只有当两个特定的身体接触时。
有人有指导吗？
你可以设置主体的userdata并这样使用它
public class GameColiision implements ContactListener
{
public GameColiision()
{
}
@Override
public void beginContact(Contact contact) {
// TODO Auto-generated method stub
Body a=contact.getFixtureA().getBody();
Body b=contact.getFixtureB().getBody();
a.getUserData();
if(a.getUserData() instanceof Obstacle&&b.getUserData() instanceof Car)
{
}
}
@Override
public void endContact(Contact contact) {
// TODO Auto-generated method stub
}
@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 class Obstacle
{
public Body rectangleBody;
public Body triangleBody;
World world;
public static final float WIDTH=10/40f;
public static final float HEIGHT=10/40f;
public Obstacle(World world,float x,float y)
{
this.world=world;
initRectangle(x,y);
}
private void initRectangle(float x, float y)
{
BodyDef bodyDef=new BodyDef();
FixtureDef fixtureDef=new FixtureDef();
bodyDef.type=BodyType.DynamicBody;
rectangleBody=world.createBody(bodyDef);
PolygonShape polygonShape=new PolygonShape();
polygonShape.setAsBox(WIDTH,HEIGHT);
fixtureDef.shape=polygonShape;
fixtureDef.friction=1f;
fixtureDef.density = 1f;
rectangleBody.createFixture(fixtureDef);
rectangleBody.setTransform(x, y, 0) ;
rectangleBody.setAngularDamping(0);
rectangleBody.setUserData(this);
}
希望这能解决你的问题
