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我使用 SWIFT 3 和 SpriteKit 制作了一个简单的屏幕保护程序。

我可以让场景显示，但是当我尝试应用纹理图集并为其设置动画时，我得到一个带有动画而不是实际图像的红色 X。

调试器出现以下错误：

2016-12-15 09:35:29.131724 ScreenSaverEngine[1819:52037] 找不到纹理图集“传单”。

我很难过——难道不能在屏幕保护程序中运行的 SpriteKit 中使用纹理图集吗？

有关该项目的更多详细信息：

  • 使用 TexturePacker 创建了纹理图集——确认纹理图集在 iOS 测试 SpriteKit 应用程序中有效。
  • 使用来自 TexturePacker 站点的示例 SWIFT3 代码。

更新 12/15/16： Rickster 提到屏幕保护程序/插件的 bundle.main 不是我的包，而是主机应用程序包。因此，我的问题是我试图从 screenaverengine.app 包而不是我自己的包中加载资产，这会给我一个“找不到”。

我相信 Flyer.swift（见下面的代码），我需要从我的包中引用并加载 Flyers.atlasc。任何人都知道该语法的外观吗？

根据我收集的信息，我需要在这里以某种方式引用我的应用程序包：

// load texture atlas
let textureAtlas = SKTextureAtlas(named: "Flyers") // << This is trying to find it in the screensaverengine.app bundle and not where it actually lives in my bundle.

代码：

import SpriteKit
import Cocoa

class GameScene: SKScene
{
    let sheet = Flyers()
    var sequence: SKAction?

    override var acceptsFirstResponder: Bool { return false }

    override func didMove(to view: SKView)
    {
        self.resignFirstResponder()
        self.isUserInteractionEnabled=false

        /* Setup your scene here */
        backgroundColor = (NSColor.black)

        // in the first animation CapGuy walks from left to right, in the second one he turns from right to left
        let fly = SKAction.animate(with: sheet.flyer(), timePerFrame: 0.033)

        // to walk over the complete iPad display, we have to repeat the animation
        let flyAnim = SKAction.repeat(fly, count: 6)

        // we define two actions to move the sprite from left to right, and back;
        let moveRight = SKAction.moveTo(x: 900, duration: flyAnim.duration)
        let moveLeft  = SKAction.moveTo(x: 100, duration: flyAnim.duration)

        // as we have only an animation with the CapGuy walking from left to right, we use a 'scale' action
        // to get a mirrored animation.
        let mirrorDirection = SKAction.scaleX(to: -1, y:1, duration:0.0)
        let resetDirection  = SKAction.scaleX(to: 1,  y:1, duration:0.0);

        // Action within a group are executed in parallel:
        let flyAndMoveRight = SKAction.group([resetDirection,  flyAnim, moveRight]);
        let flyAndMoveLeft  = SKAction.group([mirrorDirection, flyAnim, moveLeft]);

        // now we combine the walk+turn actions into a sequence, and repeat it forever
        sequence = SKAction.repeatForever(SKAction.sequence([flyAndMoveRight, flyAndMoveLeft]));

        // each time the user touches the screen, we create a new sprite, set its position, ...
        let sprite = SKSpriteNode(texture: sheet.flyer1())
        sprite.position = CGPoint(x: 100.0, y: CGFloat(arc4random() % 100) + 200.0)

        // ... attach the action with the walk animation, and add it to our scene
        sprite.run(sequence!)
        addChild(sprite)



    }


    override func update(_ currentTime: CFTimeInterval)
    {
        /* Called before each frame is rendered */
        /*self.backgroundColor = NSColor(calibratedHue: 0.0, saturation: 0.0, brightness: CGFloat(0.5 + (sin(currentTime) * 0.5)), alpha: 1.0)*/
    }
}

这是 Flyers.swift 代码：

// ---------------------------------------
// Sprite definitions for 'Flyers'
// Generated with TexturePacker 4.3.1
//
// http://www.codeandweb.com/texturepacker
// ---------------------------------------

import SpriteKit


class Flyers {

    // sprite names
    let FLYER1 = "flyer1"
    let FLYER2 = "flyer2"
    let FLYER3 = "flyer3"
    let FLYER4 = "flyer4"
    let TOAST  = "toast"


    // load texture atlas
    let textureAtlas = SKTextureAtlas(named: "Flyers")


    // individual texture objects
    func flyer1() -> SKTexture { return textureAtlas.textureNamed(FLYER1) }
    func flyer2() -> SKTexture { return textureAtlas.textureNamed(FLYER2) }
    func flyer3() -> SKTexture { return textureAtlas.textureNamed(FLYER3) }
    func flyer4() -> SKTexture { return textureAtlas.textureNamed(FLYER4) }
    func toast() -> SKTexture  { return textureAtlas.textureNamed(TOAST) }


    // texture arrays for animations
    func flyer() -> [SKTexture] {
        return [
            flyer1(),
            flyer2(),
            flyer3(),
            flyer4(),
            flyer3(),
            flyer2()
        ]
    }


}

我有一个由 TexturePacker 生成的 Flyers.atlasc 作为蓝色文件夹导入到项目中。

在此处输入图像描述

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