爲什麼我的動態物理體能夠推動我的靜態物理體？在雨燕

Question

我有一名球員和一堵牆，每當球員走進牆壁將球推開。牆是靜態的，玩家是動態的，任何人都知道如何解決這個問題？

播放器代碼：

player.texture = SKTexture(imageNamed: "player") 
player.position = CGPoint(x: 0 + player.frame.width/2,y:  self.frame.height + player.frame.height/2) 
player.zPosition = 2 
player.physicsBody?.affectedByGravity = true 
player.physicsBody?.dynamic = true 
player.physicsBody?.allowsRotation = false 
player.physicsBody?.pinned = false 
player.physicsBody?.mass = 0.18 
player.physicsBody?.restitution = 0 

代碼到移動玩家：

let moveForward = SKAction.moveByX(1, y: 0, duration: 0.01) 

牆代碼：

backWall = SKSpriteNode(imageNamed: "up") 
backWall.size = CGSize(width: 70, height: 70) 
backWall.position = CGPoint(x: 0 + 35, y: ground.frame.height) 
backWall.zPosition = 3 
backWall.physicsBody?.categoryBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.contactTestBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.collisionBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.dynamic = false 
backWall.physicsBody?.affectedByGravity = false 
backWall.physicsBody?.allowsRotation = false 
backWall.physicsBody?.friction = 1.0 
backWall.physicsBody = SKPhysicsBody(rectangleOfSize: backWall.size) 

Answer 1

即使你的牆不是動態的，它仍然是一個具有體積和質量的物理體。你想使用SKPhysicsBody(edgeLoopFromRect:)如果你想要身體不能移動，不必擔心先進的物理被應用到它

Answer 2

當你初始化SKSpriteNode，其physicsBody爲零。

所以，你的代碼的這些行：

backWall.physicsBody?.categoryBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.contactTestBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.collisionBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.dynamic = false 
backWall.physicsBody?.affectedByGravity = false 
backWall.physicsBody?.allowsRotation = false 
backWall.physicsBody?.friction = 1.0 

被忽略。

您可能需要分配SKPhysicsBody第一：

backWall.physicsBody = SKPhysicsBody(rectangleOfSize: backWall.size) 
backWall.physicsBody?.categoryBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.contactTestBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.collisionBitMask = PhysicsCategory.backWall 
backWall.physicsBody?.dynamic = false 
backWall.physicsBody?.affectedByGravity = false 
backWall.physicsBody?.allowsRotation = false 
backWall.physicsBody?.friction = 1.0 

我沒有測試你的代碼，所以你可能需要修正的其他部分。尤其是，如果您的player的physicsBody設置正確，我很擔心。