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我想检测身体之间的碰撞,一个身体有圆形,30+有凸体。也许问题是因为检测到了圆和凸之间的碰撞?请帮忙,找不到答案2天... 我有3个班级:玩家,ConctactListener和级别1(我在哪里创建多边形)。碰撞检测失败Box2d
在球员我定了型kGameObjectPlayer:
- (id) init {
if ((self = [super init])) {
type = kGameObjectPlayer;
}
return self;
}
-(void) createBox2dObject:(b2World*)world {
b2BodyDef playerBodyDef;
playerBodyDef.type = b2_dynamicBody;
playerBodyDef.position.Set(self.position.x/PTM_RATIO, self.position.y/PTM_RATIO);
playerBodyDef.userData = self;
playerBodyDef.fixedRotation = true;
body = world->CreateBody(&playerBodyDef);
b2CircleShape circleShape;
circleShape.m_radius = 0.7;
b2FixtureDef fixtureDef;
fixtureDef.shape = &circleShape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 1.0f;
fixtureDef.restitution = 0.0f;
body->CreateFixture(&fixtureDef);
}
在ContactListener:
void ContactListener::BeginContact(b2Contact *contact) {
GameObject *o1 = (GameObject*)contact->GetFixtureA()->GetBody()->GetUserData();
GameObject *o2 = (GameObject*)contact->GetFixtureB()->GetBody()->GetUserData();
if (IS_PLATFORM(o1, o2) && IS_PLAYER(o1, o2)) {
CCLOG(@"-----> Player made contact with platform!");
}
}
void ContactListener::EndContact(b2Contact *contact) {
GameObject *o1 = (GameObject*)contact->GetFixtureA()->GetBody()->GetUserData();
GameObject *o2 = (GameObject*)contact->GetFixtureB()->GetBody()->GetUserData();
if (IS_PLATFORM(o1, o2) && IS_PLAYER(o1, o2)) {
CCLOG(@"-----> Player lost contact with platform!");
}
}
而且在1级我创建静态polygones这应该是一个与哪位玩家对阵d联系。
- (void) drawStaticPolygons
{
GameObject *ground = [[GameObject alloc] init];
[ground setType:kGameObjectGround];
//1st polygon
b2Vec2 vertices1[4];
vertices1[0].Set(0, 1);
vertices1[1].Set(0, 0);
vertices1[2].Set(16, 0);
vertices1[3].Set(16, 1);
b2BodyDef myBodyDef1;
myBodyDef1.type = b2_staticBody;
myBodyDef1.userData = ground;
b2PolygonShape polygonShape1;
polygonShape1.Set(vertices1, 4);
b2FixtureDef myFixtureDef1;
myFixtureDef1.shape = &polygonShape1; //change the shape of the fixture
myBodyDef1.position.Set(0,0);
b2Body *staticBody1 = world->CreateBody(&myBodyDef1);
staticBody1->CreateFixture(&myFixtureDef1); //add a fixture to the body
//2nd polygon
....
//n polygon
}
的问题是如何使ContactListener知道我的多边形kGameObjectGround?
你如何检测碰撞?什么是不工作?提供代码和意外行为的描述。 – Pavel 2013-02-11 19:56:20
我编辑了答案,在ContactListener中似乎没有问题,也许我在 - (void)drawStaticPolygons中做了些什么。当玩家跳下静态多边形时没有任何反应,如果他降落没有任何反应。 类播放器使用类型kGameObjectPlayer初始化为多边形,我通过userData设置类型kGameObjectGround。 – user1974123 2013-02-11 21:15:08