let hill = SKSpriteNode(imageNamed: "hill")



hill.position = CGPoint(x: 400, y: self.frame.height / 2 )



hill.setScale(1)

hill.physicsBody = SKPhysicsBody(rectangleOfSize: hill.size)

hill.physicsBody?.categoryBitMask = 1

hill.physicsBody?.collisionBitMask = 2

self.addChild(hill)