Question

我正在使用Xcode 8.1 Swift 3制作小型弹跳游戏。

玩家应该围绕一个弹跳球创建围墙，这个球应该在每个墙上反弹。

在触摸下，我移动到指向并触摸结束，我在两个触摸开始和结束之间创建一个线共享节点。

我添加了节点所需的物理，然后我将child添加到此节点（请参阅下面的节点）。

接下来发生的事情是，每次接触都会开始，接触结束，“斯威夫特＆＃39;绘制线节点并将其附加到自身，但只有第一个节点反弹球。第一个之后的所有线（墙）都不会影响球。

这是我的代码GameScene Swift文件：

import SpriteKit

class GameScene: SKScene, SKPhysicsContactDelegate {
// vars lets and nodes
let startingBall = SKShapeNode(circleOfRadius: 10)
let myPath = CGMutablePath()
let ballCategory : UInt32 = 1
let wallCategory : UInt32 = 2

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for t in touches {
        myPath.move(to: t.location(in: self))
    }
}

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    for t in touches {
        myPath.addLine(to: t.location(in: self))
        let wallNode = SKShapeNode(path: myPath)
        wallNode.lineWidth = 5.0
        wallNode.fillColor = SKColor.green
        wallNode.strokeColor = SKColor.green
        wallNode.physicsBody = SKPhysicsBody(edgeLoopFrom: myPath)
        wallNode.physicsBody?.categoryBitMask = wallCategory
        self.addChild(wallNode)
    }
}

override func didMove(to view: SKView) {

    self.physicsBody = SKPhysicsBody(edgeLoopFrom: self.frame)
    self.physicsBody?.categoryBitMask = wallCategory
    startingBall.fillColor = SKColor.red
    startingBall.position = CGPoint(x: self.frame.width/2, y: self.frame.height/2)
    startingBall.physicsBody = SKPhysicsBody(circleOfRadius: 10)
    startingBall.physicsBody?.affectedByGravity = false
    startingBall.physicsBody?.isDynamic = true
    startingBall.physicsBody?.restitution = 1.0
    startingBall.physicsBody?.friction = 0.0
    startingBall.physicsBody?.linearDamping = 0.0
    startingBall.physicsBody?.angularDamping = 0.0
    self.addChild(startingBall)

    startingBall.physicsBody?.applyImpulse(CGVector(dx: 3.0, dy: 3.0))
}
}

Answer 1

感谢所有我已修复它

实际上可变路径myPath定义触摸开始和触摸结束线之间的线以仅绘制形状节点...同时为节点之间的每个触摸系列创建物理边缘...

分步骤 1- i添加了起点和终点变量 2-触摸开始节点触摸开始节点和触摸端节点结束 3- i为点到点起始节点和结束节点设置物理体

1-

var startPoint : CGPoint = CGPoint.zero
var endPoint : CGPoint = CGPoint.zero

2- ..

override func touchesBegan(_ touches: Set<UITouch>, with event:   UIEvent?) {
    for t in touches {
        startPoint = t.location(in: self)
        myPath.move(to: t.location(in: self))
    }
}

        endPoint = t.location(in: self)

3- ..

        wallNode.physicsBody = SKPhysicsBody(edgeFrom: startPoint, to:  endPoint)

求助，你可以在skiver中将show physics设置为true

    skview.showsPhysics = true

感谢

触摸精灵节点首先只需要物理体

1 个答案: