如何创建跟随 SWIFT 中字符的背景？

Question

我在 Xcode 从事这个项目，我在那里制作动画。我有完美的工作程序，小角色在屏幕上走来走去。如果我在屏幕上按下，那就是角色前进的方向。我想在这里做的是添加背景图像并使其跟随角色的去向。基本上，我希望角色能够在不超出图像的情况下在大地图上走动。类似于 scrollView，但仅限于游戏场景。

P.S。下面的所有代码都有效，我只想添加移动的背景图像。

这是我的主要游戏场景的一些代码

    override func didMoveToView(view: SKView) {
    /* Setup your scene here */

    // the hero is initialized with a texture
    hero = Player(named: "hero_walk_down_0")
    hero.position = CGPoint(x: self.frame.midX, y: self.frame.midY)
    self.addChild(hero)
    if Settings.sharedInstance.virtualPad {
        controller = ControllerNode(position: CGPoint(x:0, y: 0))
        self.addChild(controller)
    }
    backgroundColor = SKColor.blueColor()
}


override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        if Settings.sharedInstance.virtualPad == false {
            hero.destination = location
        }
    }
}

override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let previousLocation = touch.previousLocationInNode(self)
        if Settings.sharedInstance.virtualPad == false {
            hero.destination = location
        }
    }
}

override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {
    touchesEndedOrCancelled(touches, withEvent: event)
}

override func touchesCancelled(touches: Set<NSObject>!, withEvent event: UIEvent!) {
    touchesEndedOrCancelled(touches, withEvent: event)
}

func touchesEndedOrCancelled(touches: NSSet, withEvent event: UIEvent) {
    // when a touch is ended, remove it from the list
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let previousLocation = touch.previousLocationInNode(self)
        if Settings.sharedInstance.virtualPad == false {
            hero.destination = nil
        }
    }
}

override func update(currentTime: CFTimeInterval) {
    /* Called before each frame is rendered */
    if Settings.sharedInstance.virtualPad {
        hero.walk(self.controller!.pressedDirections())
    }
    else {
        if hero.destination != nil {
            hero.walkTowards(hero.destination!)
        }
    }
}

Answer 1

您创建两个 SKNodes - 一个用于角色，一个用于背景，并将它们分别添加到每个组中。

无论何时移动角色的SKNode，都会在后台节点上复制相同的动作。

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