关于spriteKit中联系人的双重通知 [英] Double notification on contact in spriteKit
问题描述
当我的SKSpriteNode点击与worldCategory接触时,我似乎得到双重通知,这是怎么回事?当我想触摸worldCategory时想要运行一个动作会产生问题,因为动作正在被触发
I seem to get a double notification when my SKSpriteNode hits has contact with the worldCategory, how come is this? This creates problem when i want to run an action when it touches the worldCategory, since the action is being triggered
这是我在InitWithSize方法中的位掩码
Here is my bitmask in the InitWithSize method
mover.physicsBody.categoryBitMask = birdCategory;
bottom.physicsBody.categoryBitMask = worldCategory;
mover.physicsBody.contactTestBitMask = worldCategory;
以下是联系方式:
- (void)didBeginContact:(SKPhysicsContact *)contact {
if (contact.bodyA.categoryBitMask == worldCategory) {
mover.texture = [SKTexture textureWithImageNamed:@"birddead1"];
NSLog(@"Contact");
self.scene.paused = YES;
[pauseButton removeFromSuperview];
}
}
在我的日志中显示两行联系人
In my log there is being shown two lines with "Contact"
推荐答案
设置对象的恢复原状
属性为零如下:
Set your object's restitution
property to zero like this:
self.physicsBody.restitution = 0; //it's either self or the name of your object
如果这不能解决您的问题,请查看与您的对象相关的移动代码。查找导致来回移动的任何情况,这可能会造成双重联系问题。
If that does not solve your issue, look at the movement code related to your object(s). Look for any situation that cause a 'back and forth' movement which can create the double contact issue.
作为最后的手段,您可以为联系人设置过滤器:
As a last resort you can set up a filter for your contacts:
- 创建一个存储联系时间的变量。
- 比较联系变量时间更新中的当前时间:方法。
- 如果差异小于指定时间(例如0.2秒),则允许联系人并将您的联系时间变量设置为当前时间。如果差异低于过滤时间(0.2秒),请忽略该联系。
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