How to create triangle in SpriteKit (Swift 2)

问题

I did it with SKSpritenode

 func AddTopTriangels() {

        TopTriangel = SKSpriteNode(imageNamed:"Top-Triangels.png")
        TopTriangel.position = CGPointMake(frame.size.width/2, frame.size.height/2 + 370)
        TopTriangel.size = CGSize.init(width: 440, height: 35)
        addChild(TopTriangel)
    }

But i want to create it with SKShapenode , how i can do it?

回答1:

You should create SKSpriteNode as you did in the question and just attach physic body to it with triangle shape:

    var trianglePath = CGPathCreateMutable()
    CGPathMoveToPoint(trianglePath, nil, -TopTriangel.size.width/2, -TopTriangel.size.height/2)
    CGPathAddLineToPoint(trianglePath, nil, TopTriangel.size.width/2, -TopTriangel.size.height/2)
    CGPathAddLineToPoint(trianglePath, nil, 0, TopTriangel.size.height/2)
    CGPathAddLineToPoint(trianglePath, nil, -TopTriangel.size.width/2, -TopTriangel.size.height/2)
    TopTriangel.physicsBody = SKPhysicsBody(polygonFromPath: trianglePath)

You can add this line:

sceneView.showsPhysics = true

to make sure the shape match your image (SKSpriteNode), just remember to remove it after debugging.

来源：https://stackoverflow.com/questions/34197828/how-to-create-triangle-in-spritekit-swift-2