xcode - SKPhysicsbody 碰撞快速错误

Question

我必须遵循为我的敌人制作自定义physicalBody的代码。请参阅下面的代码:

let offsetX = CGFloat(Enemy.frame.size.width * Enemy.anchorPoint.x)
let offsetY = CGFloat(Enemy.frame.size.height * Enemy.anchorPoint.y)

let path = CGPathCreateMutable()

CGPathMoveToPoint(path, nil, 25 - offsetX, 73 - offsetY)
CGPathAddLineToPoint(path, nil, 32 - offsetX, 72 - offsetY)
CGPathAddLineToPoint(path, nil, 45 - offsetX, 66 - offsetY)
CGPathAddLineToPoint(path, nil, 47 - offsetX, 63 - offsetY)
CGPathAddLineToPoint(path, nil, 43 - offsetX, 11 - offsetY)
CGPathAddLineToPoint(path, nil, 25 - offsetX, 2 - offsetY)
CGPathAddLineToPoint(path, nil, 11 - offsetX, 15 - offsetY)
CGPathAddLineToPoint(path, nil, 5 - offsetX, 29 - offsetY)
CGPathAddLineToPoint(path, nil, 5 - offsetX, 30 - offsetY)
CGPathAddLineToPoint(path, nil, 3 - offsetX, 44 - offsetY)
CGPathAddLineToPoint(path, nil, 3 - offsetX, 51 - offsetY)
CGPathAddLineToPoint(path, nil, 7 - offsetX, 65 - offsetY)
CGPathAddLineToPoint(path, nil, 9 - offsetX, 67 - offsetY)
CGPathAddLineToPoint(path, nil, 15 - offsetX, 70 - offsetY)

CGPathCloseSubpath(path)

Enemy.physicsBody = SKPhysicsBody(polygonFromPath: path)

当我运行此代码时，我的 physicalBody 是图片大小的一半。位于图片的左下角。我该如何解决？

Answer 1

我发现如果你将所有的值相乘，它应该有效!请参阅下一行代码:

CGPathAddLineToPoint(path, nil, 11*2 - offsetX, 15*2 - offsetY)