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我正在開發Libgdx碰撞檢測機制，我嘗試使用聯繫人偵聽器來實現它，但它在我的代碼中沒有任何作用。聯繫人監聽器在Libgdx中沒有任何作用
這裏是我的代碼
public class FirstLevel implements Screen{
......
private Player player;
......
...
Gdx.input.setInputProcessor(player);
world.setContactListener(player);
....
}
「玩家」 是實現contactListener和InputProcessor類。
這裏是球員類
公共類播放器實現屏幕，InputProcessor，ContactListener {
private Body polybody,polybodys;
private Player player;
private World world;
boolean Colliding ;
private Body enemybody;
private Sprite polysprite;
public final float width,height;
private Rectangle rectangle;
private Vector2 movement=new Vector2();
private float speed=580;
private Body rec;
public Player(World world,float x,float y,float width)
{
this.width=width; //IMP
height=width*2;
BodyDef polygon=new BodyDef();
polygon.type=BodyType.DynamicBody;
polygon.position.set(x,y); //
PolygonShape poly =new PolygonShape();
poly.setAsBox(width/2,height/2); //
polygon.position.set(5,4);
FixtureDef polyfixture=new FixtureDef();
polyfixture.shape=poly;
polyfixture.friction=0.8f;
polyfixture.restitution=0.1f;
polyfixture.density=3;
//creating actual body
polybody=world.createBody(polygon);
polybody.createFixture(polyfixture).setUserData(polygon);
polysprite=new Sprite(new Texture("img/car.jpg"));
polysprite.setSize(2, 3); //size of mario
polysprite.setOrigin(polysprite.getWidth()/2, polysprite.getHeight()/2);
polybody.setUserData(polysprite);
BodyDef polygons=new BodyDef();
polygons.type=BodyType.DynamicBody;
PolygonShape polys=new PolygonShape();
polys.setAsBox(2,2);
FixtureDef polyxfixture=new FixtureDef();
polyxfixture.shape=polys;
polyxfixture.friction=0.8f;
polyxfixture.restitution=0.1f;
polyxfixture.density=3;
polybodys=world.createBody(polygons);
polybodys.createFixture(polyxfixture).setUserData(polygons);
poly.dispose();
}
public void update()
{
polybody.applyForceToCenter(movement, true);
polybodys.applyForceToCenter(movement,true);
}
public Body getBody(){
{
return polybody;
}
}
@Override
public boolean keyDown(int keycode) {
// TODO Auto-generated method stub
switch (keycode) {
case Keys.W:
movement.y=speed;
break;
case Keys.S:
movement.y=-speed;
break;
case Keys.D:
movement.x=speed;
break;
case Keys.A:
movement.x=-speed;
}
return true;
}
@Override
public boolean keyUp(int keycode) {
// TODO Auto-generated method stub
switch (keycode) {
case Keys.W:
movement.y=0;
break;
case Keys.S:
movement.y=0;
break;
case Keys.D:
movement.x=0;
break;
case Keys.A:
movement.x=0;
}
return true;
}
@Override
public boolean touchDown(int screenX, int screenY, int pointer, int button) {
// TODO Auto-generated method stub
movement.x =speed;
Gdx.app.log("Example", "touch done ");
return true;
}
@Override
public void beginContact(Contact contact) {
// TODO Auto-generated method stub
Fixture fixtureA=contact.getFixtureA();
Fixture fixtureB=contact.getFixtureB();
if(fixtureA.getUserData() != null && fixtureA.getUserData().equals(polybody) &&
fixtureB.getUserData() !=null && fixtureB.getUserData().equals(polybodys)){
Gdx.app.log("Contact","1");
System.out.println("its colliding");
}
if(fixtureB.getUserData() !=null && fixtureB.getUserData().equals(polybodys) &&
fixtureA.getUserData() !=null && fixtureA.getUserData().equals(polybody))
{
System.out.println("its colliding");
}
}
}
這是我的代碼和 「polybody和polybodys」 是兩個機構。我想檢測兩個物體之間的碰撞。當身體碰撞時，我無法檢測到任何碰撞。請幫忙。提前致謝。