如何在Sprite-Kit中实现类似CCBlink的操作?我希望2闪烁10次。
id blink = [CCBlink actionWithDuration:2.0f blinks:10];
id calBck = [CCCallBlock actionWithBlock:^{
[enemy expired];
}];
[HeroSprite runAction:[CCSequence actions:blink, calBck, nil]];
答案 0 :(得分:6)
此示例使用alpha
属性创建闪烁效果。您也可以使用hidden
属性和runBlock操作,如@ LearnCocos2D建议的那样。
闪烁时间:2.0 / 10 = 0.2,每次淡入和淡出都是0.1秒。
HeroSprite.alpha = 0.0;
SKAction *blinkSequence = [SKAction sequence:@[
[SKAction fadeAlphaTo:1.0 duration:0.1],
[SKAction fadeAlphaTo:0.0 duration:0.1]
]];
[HeroSprite runAction:[SKAction repeatAction:blinkSequence count:10] completion:^{
[enemy expired];
}];
答案 1 :(得分:0)
我已经转换为 Swift 2.x S.E.答案,但我想要在闪烁期间着色我的节点。问题是当你必须处理不同类型的节点时。
我用这段代码解决了这个扩展:
// SKAction extension : blink effect for a generic SKNode, SKShapeNode, SKSpriteNode and SKLabelNode
// Usage:
// self.runAction(SKAction.blink(5)) // fade in and fade out 5 times for 2 seconds
// self.runAction(SKAction.blink(5, duration: 3.0)) // fade in and fade out 5 times for 3 seconds or whatever you want
// self.runAction(SKAction.blink(5, duration: 3.0, colorize: true)) // fade in and fade out 5 times for 3 seconds switching color from red to white
// self.runAction(SKAction.blink(5, duration: 3.0, colorize: true, color1:SKColor.blueColor(), color2:SKColor.yellowColor())) // fade in and fade out 5 times for 3 seconds switching color from custom color2 to custom color1
extension SKAction {
class func blink(times:Int,duration:NSTimeInterval = 2.0,colorize:Bool = false, color1:SKColor = SKColor.redColor(),color2:SKColor = SKColor.whiteColor())->SKAction {
let fadeOut = SKAction.fadeAlphaTo(0.0, duration: (duration/Double(times))/2)
let fadeIn = SKAction.fadeAlphaTo(1.0, duration: (duration/Double(times))/2)
if colorize {
var isColorChanged = false
let colorize = SKAction.customActionWithDuration(0.01, actionBlock: {
node, elapsedTime in
switch node {
case is SKSpriteNode:
if !isColorChanged {
node.runAction(SKAction.colorizeWithColor(color2, colorBlendFactor: 1, duration: 0.01))
} else {
node.runAction(SKAction.colorizeWithColor(color1, colorBlendFactor: 1, duration: 0.01))
}
case is SKShapeNode:
(node as! SKShapeNode).fillColor = isColorChanged ? color1 : color2
case is SKLabelNode:
(node as! SKLabelNode).fontColor = isColorChanged ? color1 : color2
default:
break
}
})
let changeColor = SKAction.runBlock({
isColorChanged = !isColorChanged
})
let blink = SKAction.sequence([fadeOut,colorize, fadeIn, changeColor])
return SKAction.repeatAction(blink, count: times)
}
let blink = SKAction.sequence([fadeOut, fadeIn])
return SKAction.repeatAction(blink, count: times)
}
}