我的部分动画在 SpriteKit 中不起作用

Question

init () {
    
    super.init(texture: nil, color: .clear, size: initialSize)
    // Create physicsBody based on a frame of the sprite
    // basically giving it gravity and physics components
    let bodyTexture = textureAtlas.textureNamed("MainCharacterFlying1")
    self.physicsBody = SKPhysicsBody(texture: bodyTexture, size: self.size)
    // Lose momentum quickly with high linear dampening
    self.physicsBody?.linearDamping = 0.9
    // weighs around 30 kg
    self.physicsBody?.mass = 30
    // no rotation
    self.physicsBody?.allowsRotation = false
    createAnimations()
    self.run(soarAnimation, withKey: "soarAnimation")
}


// Animations to make the main character seem like it is flying
func createAnimations() {
    let rotateUpAction = SKAction.rotate(byAngle: 0, duration: 0.475)
    rotateUpAction.timingMode = .easeOut
    
    let rotateDownAction = SKAction.rotate(byAngle: -1, duration: 0.8)
    rotateDownAction.timingMode = .easeIn
    
    let flyFrames: [SKTexture] = [textureAtlas.textureNamed("MainCharacterFlying1"), textureAtlas.textureNamed("MainCharacterFlying2"),textureAtlas.textureNamed("MainCharacterFlying3"), textureAtlas.textureNamed("MainCharacterFlying4"),textureAtlas.textureNamed("MainCharacterFlying5"),textureAtlas.textureNamed("MainCharacterFlying4"),textureAtlas.textureNamed("MainCharacterFlying3"),textureAtlas.textureNamed("MainCharacterFlying2")]
    var flyAction = SKAction.animate(with: flyFrames, timePerFrame: 0.1)
    flyAction = SKAction.repeatForever(flyAction)
    flyAnimation = SKAction.group([flyAction,rotateUpAction])
    
    let soarFrames: [SKTexture] = [textureAtlas.textureNamed("MainCharacterFlying5")]
    var soarAction = SKAction.animate(with: soarFrames, timePerFrame: 1)
    soarAction = SKAction.repeatForever(soarAction)
    let soarAnimation = SKAction.group([soarAction,rotateDownAction])
}

When I run this code on the IOS Simulator, I have to click on the screen once in order for my main sprite to show up on the screen, or else it will not. And when I click on the sprite, the sprite will start flapping its wings and go up (I have other code for that) however, the rotateUpAction and rotateDownAction are not showing up at all on the Simulator. So I was wondering if there were any solutions and anyone willing to answer. Thank you for your time. Also, this code from the class of the main character, the name of the class is "Player"

Answer 1

您在 let soarAnimation 内部声明了您的 createAnimations 函数，这意味着当您调用 self.run(soarAnimation) 时它不在范围内。解决方案：将 soarAnimation 声明为 class 属性。替代解决方案：拥有 createAnimations() return SKAction 并以这种方式在 init 中获取它

我的部分动画在 SpriteKit 中不起作用

Part of my animation is not working in SpriteKit

sprite-kit

swift