Question

这是NumberTile类的构造函数：

class NumberTile:SKShapeNode{

    var tileColorArray:NSArray = NSArray(objects: "#996666","#a65959","#b34d4d","#bf4040","#cc3333","#d92626","#e61919") //red


    init(xPos: NSInteger, yPos: NSInteger){

        super.init()
        var size:CGSize = CGSize(width: 40, height: 40);
        self.path = CGPathCreateWithRect(CGRect(origin: CGPointZero, size:size), nil)

        self.position = CGPointMake(0, (CGFloat)(yPos))
        var fillColor:UIColor = UIColor(rgba: tileColorArray.objectAtIndex(Int(arc4random_uniform(UInt32(self.tileColorArray.count)))) as! String)

        self.fillColor = fillColor
        self.strokeColor = UIColor.blackColor()
        self.physicsBody = SKPhysicsBody(rectangleOfSize: self.frame.size, center: CGPointMake((CGFloat)(GlobalConstants.k_TILE_SIZE/2),(CGFloat)(GlobalConstants.k_TILE_SIZE/2)))

        self.physicsBody?.mass = GlobalConstants.k_TILE_MASS
        self.physicsBody?.friction = 1.0
        self.physicsBody?.allowsRotation = false;

    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

我将大小硬编码为40 x 40，x位置为0

我通过以下代码将场景添加到场景中

var tile:NumberTile = NumberTile(xPos: xPos, yPos: yPos)
        self.newlyCreatedTile = tile
        println("tile position: \(NSStringFromCGRect(tile.frame)) xPos:\(xPos)");
        println("physic body: \(tile.physicsBody)");

        addChild(tile)

xPos可以忽略，因为我在构造函数中对其进行了硬编码以进行调试。

结果

tile position: {{-0.5, 373.5}, {41, 41}} xPos:0
physic body: Optional(<SKPhysicsBody> type:<Rectangle> representedObject:[<SKShapeNode> name:'(null)' accumulatedFrame:{{-0.5, 373.5}, {41, 41}}])
tile position: {{-0.5, 373.5}, {41, 41}} xPos:40
physic body: Optional(<SKPhysicsBody> type:<Rectangle> representedObject:[<SKShapeNode> name:'(null)' accumulatedFrame:{{-0.5, 373.5}, {41, 41}}])
tile position: {{-0.5, 373.5}, {41, 41}} xPos:80
physic body: Optional(<SKPhysicsBody> type:<Rectangle> representedObject:[<SKShapeNode> name:'(null)' accumulatedFrame:{{-0.5, 373.5}, {41, 41}}])
tile position: {{-0.5, 373.5}, {41, 41}} xPos:120
physic body: Optional(<SKPhysicsBody> type:<Rectangle> representedObject:[<SKShapeNode> name:'(null)' accumulatedFrame:{{-0.5, 373.5}, {41, 41}}])

为什么xPos移位-0.5并且宽度和高度增加1？任何想法？

//更新

对于xPos，我终于搞清楚了，在构造函数中应该将原点设置为（0.5,0.5），如下所示

self.path = CGPathCreateWithRect（CGRect（origin：CGPointMake（0.5,0.5），size：size），nil）

但宽度和高度仍然不明白..

Answer 1

我相信抚摸路径会增加笔画大小的形状（我猜测每边都是0.5）这就是给你0.5偏移量和大小+1。将你的矩形插入一个以说明它或不设置笔触颜色

SKNode框架不正确？

1 个答案: