相关疑难解决方法(0)

我在一个侧面游戏中工作,我需要知道一个区域中的节点是否能够实现"视线"之类的东西.现在我正在尝试使用enumerateBodyiesInRect()但是它正在检测来自评估的rect的20px或更多的物体,我无法弄清楚为什么它如此不精确.

这就是我现在正在尝试的事情:

import SpriteKit
import CoreMotion

class GameScene: SKScene, SKPhysicsContactDelegate
{
var player = SKShapeNode()
var world = SKShapeNode()
var rShape = SKShapeNode()

override func didMoveToView(view: SKView) {
    self.physicsWorld.contactDelegate = self
    self.scaleMode = SKSceneScaleMode.AspectFit
    self.size = view.bounds.size

    // Add world
    world = SKShapeNode(rectOfSize: view.bounds.size)
    world.physicsBody = SKPhysicsBody(edgeLoopFromPath: world.path)
    world.position = CGPointMake(self.frame.size.width/2, self.frame.size.height/2) // Move camera
    self.addChild(world)

    // Add player
    player = SKShapeNode(rectOfSize: CGSize(width: 25, height: 25))
    player.physicsBody = SKPhysicsBody(rectangleOfSize: player.frame.size)
    player.physicsBody.dynamic = false
    player.strokeColor = SKColor.blueColor()
    player.fillColor = SKColor.blueColor()
    player.position …