SpriteKit 部分纹理映射

2 回答

• 2

  如果你想将纹理分解成较小的纹理块以用作拼图，那么你想要使用SKTexture(rect: in texture:)

  以下是如何使用它的示例：

  let texture = SKTexture(...)  //How ever you plan on getting main texture
  let subTextureRect = CGRect(x:0,y:0.width:10,height:10) // The actual location and size of where you want to grab the sub texture from main texture
  let subTexture = SKTexture(rect:subTextureRect, in:texture);
  

  您现在有一个子纹理块可用于其他节点。

  回复于 2024-04-28T11:45:49+08:00
• 4

  尝试这样的事情：

  import SpriteKit
  import GameplayKit
  
  class GameScene: SKScene {
  
     let visibleArea = SKSpriteNode(color: .black, size: CGSize(width:100,height:100))
  
     let parentNode = SKSpriteNode(color: .white, size: CGSize(width:200, height:200))
  
      override func didMove(to view: SKView) {
  
          let cropNode = SKCropNode()
  
          let texture = SKSpriteNode(imageNamed: "Spaceship")
  
          visibleArea.position = CGPoint(x: 0, y: 100)
          cropNode.maskNode = visibleArea
  
          cropNode.addChild(texture)
  
          addChild(cropNode)
  
      }
  
      override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
          if let touch = touches.first {
  
              let location = touch.location(in: self)
  
              let previousPosition = touch.previousLocation(in: self)
  
                  let translation = CGPoint(x: location.x - previousPosition.x , y: location.y - previousPosition.y )
  
                  visibleArea.position = CGPoint(x: visibleArea.position.x + translation.x , y: visibleArea.position.y + translation.y)
          }
      }
  }
  

  Overriden touchesMoved 方法就是因为更好的例子。我在这里做的是：

  • 创建了 SKCropNode

  • 为它添加了一个将被遮罩的纹理

  • 定义了可见区域，即 SKSpriteNode 并将其分配给裁剪节点的掩码属性，这实际上是神奇

  结果如下：

  

  回复于 2024-04-28T11:45:49+08:00