我想创建一个SKShapeNode实例和屏幕边缘之间的碰撞,但由于某种原因,ShapeNode仍然超出屏幕的限制。我已经实现了我认为应该处理碰撞的代码,但我是SpriteKit的新手,所以我不完全确定。这里有一段代码:iOS SpriteKit碰撞屏幕边缘不起作用
//
// GameScene.swift
// SpriteKitTest
//
// Created by 580380 on 3/10/16.
// Copyright (c) 2016 580380. All rights reserved.
//
import SpriteKit
import UIKit
import CoreMotion
class GameScene: SKScene {
//MARK: - Global variables
let motionManager = CMMotionManager()
var circleNode = SKShapeNode()
var destX : CGFloat = 0.0
var destY : CGFloat = 0.0
enum Collision :UInt32 {
case ball = 1
case wall = 2
}
//MARK: - Sprite kit functionality
override func didMoveToView(view: SKView) {
backgroundColor = UIColor.whiteColor()
createCircleNode()
moveCircleNode()
self.addChild(circleNode)
}
//Setup and configuring the SKShapeNode object
private func createCircleNode() {
circleNode.path = UIBezierPath(arcCenter: CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame)), radius: 20, startAngle: 0, endAngle: CGFloat(2*M_PI), clockwise: true).CGPath
circleNode.fillColor = UIColor.redColor()
circleNode.strokeColor = UIColor.blueColor()
circleNode.lineWidth = 1
}
private func moveCircleNode() {
circleNode.physicsBody = SKPhysicsBody()
circleNode.physicsBody?.dynamic = true
circleNode.physicsBody?.affectedByGravity = false
if motionManager.accelerometerAvailable {
motionManager.accelerometerUpdateInterval = 0.1
motionManager.startAccelerometerUpdatesToQueue(NSOperationQueue.mainQueue(), withHandler: { (data, error) -> Void in
self.destX = self.circleNode.position.x + CGFloat(data!.acceleration.x*100)
self.destY = self.circleNode.position.y + CGFloat(data!.acceleration.y*200)
})
}
self.physicsBody = SKPhysicsBody(edgeLoopFromRect: self.frame)
self.physicsBody!.dynamic = true
self.physicsBody!.affectedByGravity = false
self.physicsBody!.categoryBitMask = Collision.wall.rawValue
self.physicsBody!.collisionBitMask = Collision.ball.rawValue
}
override func update(currentTime: NSTimeInterval) {
let destXAction = SKAction.moveToX(destX, duration: 0.1)
let destYAction = SKAction.moveToY(destY, duration: 0.1)
self.circleNode.runAction(destXAction)
self.circleNode.runAction(destYAction)
}
}
任何想法,我可能会出错?