在我的SpriteKit项目中,我有一只船,我左右拖动它来捕捉从天上掉下来的物品,我希望船朝着它移动的方向看,我想我必须将xScale从CGFloat(1)更改为CGFloat(-1),但我不知道如何处理,任何建议都值得赞赏,这是我处理船移动的方式:
class GameScene: SKScene{
var node = SKSpriteNode()
var nodePosition = CGPoint()
var startTouch = CGPoint()
override func didMove(to view: SKView) {
self.anchorPoint = CGPoint(x: 0.5, y: 0.5)
// node set up
node = SKSpriteNode(color: .red, size: CGSize(width: 50, height: 50))
node.position = CGPoint.zero
self.addChild(node)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch = touches.first
if let location = touch?.location(in: self){
startTouch = location
nodePosition = node.position
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch = touches.first
if let location = touch?.location(in: self){
node.run(SKAction.move(to: CGPoint(x: nodePosition.x + location.x - startTouch.x, y: nodePosition.y + location.y - startTouch.y), duration: 0.1))
}
}
}