Objective c 为什么sprite套件中的纹理物理体不会对碰撞作出反应?
我创建了这个精灵:Objective c 为什么sprite套件中的纹理物理体不会对碰撞作出反应?,objective-c,xcode,sprite-kit,xcode6,game-physics,Objective C,Xcode,Sprite Kit,Xcode6,Game Physics,我创建了这个精灵: - (SKNode *) createPlayer { SKTextureAtlas *spritesAtlas = [self textureAtlasNamed:@"sprites"]; SKNode *playerNode = [SKNode node]; [playerNode setPosition:CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))];
- (SKNode *) createPlayer
{
SKTextureAtlas *spritesAtlas = [self textureAtlasNamed:@"sprites"];
SKNode *playerNode = [SKNode node];
[playerNode setPosition:CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))];
SKSpriteNode *sprite = [SKSpriteNode spriteNodeWithTexture:[spritesAtlas textureNamed:@"alien"]];
[playerNode addChild:sprite];
playerNode.physicsBody = [SKPhysicsBody bodyWithTexture:sprite.texture size:sprite.texture.size];
playerNode.physicsBody.dynamic = YES;
playerNode.physicsBody.allowsRotation = NO;
playerNode.physicsBody.affectedByGravity = NO;
playerNode.physicsBody.restitution = 1.0f;
playerNode.physicsBody.friction = 0.0f;
playerNode.physicsBody.angularDamping = 0.0f;
playerNode.physicsBody.linearDamping = 0.0f;
playerNode.physicsBody.usesPreciseCollisionDetection = YES;
playerNode.physicsBody.categoryBitMask = CollisionCategoryPlayer;
playerNode.physicsBody.collisionBitMask = 0;
playerNode.physicsBody.contactTestBitMask = CollisionCategory1 | CollisionCategory2 | CollisionCategory3 | CollisionCategory4 | CollisionCategory5;
return playerNode;
}
如果在物理体定义中我使用了一些形状,比如圆,它确实会对碰撞做出反应。然而,如果我尝试使用上面代码中的精确形状,它将超越一切。这是为什么?我该如何修复它?图片为.png,背景透明将物理体的碰撞位掩码设置为0将使其通过所有其他物理体。为什么?如果我将其保留为一个圆而不是纹理,则不知道,但是将collisionBitMask设置为0xFFFFFFFF all categories是否解决了您的问题?只是尝试了一下,没有解决如果您还没有解决,请添加skView.showsPhysics=YES;在GameViewController viewDidLoad方法中,查看是否为playerNode获取物理实体。