有两个物理机构：AirplaneNode：
- (id)initAirplaneNode {
self = [super initWithImageNamed:@"airplane.png"];
if (self) {
self.name = @"player";
self.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:self.frame.size];
self.physicsBody.dynamic = NO;
self.physicsBody.affectedByGravity = NO;
self.physicsBody.categoryBitMask = AIRPLANE_CATEGORY;
self.physicsBody.contactTestBitMask = BULLET_CATEGORY;
}
return self;
}
和一个BulletNode：
- (id)initBulletNode {
self = [super initWithImageNamed:@"bullet.png"];
if (self) {
self.name = @"bullet";
self.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:self.frame.size];
self.physicsBody.dynamic = NO;
self.physicsBody.usesPreciseCollisionDetection = YES;
self.physicsBody.categoryBitMask = BULLET_CATEGORY;
self.physicsBody.contactTestBitMask = AIRPLANE_CATEGORY;
}
return self;
}
它们都将physicsBody.dynamic属性设置为NO.
问题是当子弹击中飞机时,我的SKScene不会调用didBeginContact方法.但是,如果我为PlaneplaneNode或BulletNode指定physicsBody.dynamic属性为YES,则didBeginContact将被触发.
有办法解决这个问题吗？
PS：我真的不需要我的节点是动态的,因为它会导致不必要的行为：飞机在受到损坏时轻微移动,子弹在飞行时有时会旋转.
解决方法
非动态(静态)物体永远不会发生碰撞,它们并不意味着首先改变它们的位置.
如果您不希望它们受到冲突的影响,请将其collisionBitMask设置为0.请参阅SKPhysicsBody reference.