Sprite-Kit 中的按钮按下动画

Posted 2023-03-08

【中文标题】Sprite-Kit 中的按钮按下动画

【英文标题】：Button pressed animation in Sprite-Kit

【发布时间】：2014-04-23 12:51:48

【问题描述】：

在 Sprite-Kit 游戏中，我想在按钮被按下时制作动画。现在代码直接做出反应，而不是等到动画执行。此外，当用户将手指从按钮上擦掉时，我希望按钮能够动画回来。

Here my code:

-(void)addStartButton:(CGSize)size 
    self.start = [SKSpriteNode spriteNodeWithImageNamed:@"startButton1"];
    self.start.position = CGPointMake(size.width/2, size.height/2);
    self.start.name = @"start";
    [self addChild:self.start];  




-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 


   UITouch *touch = [touches anyObject];
   CGPoint location = [touch locationInNode:self];
   SKNode *node = [self nodeAtPoint:location];


if ([node.name isEqualToString:@"start"]) 

    self.start.texture = [SKTexture textureWithImageNamed:@"startButton2"];        

    MyScene *myScene = [MyScene sceneWithSize:self.size];
    [self.view presentScene:myScene transition:[SKTransition pushWithDirection:SKTransitionDirectionLeft duration:0.5]];
    

【参考方案1】：

这会让你在切换到另一个场景之前有 2 秒的延迟：

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event   
   UITouch *touch = [touches anyObject];
   CGPoint location = [touch locationInNode:self];
   SKNode *node = [self nodeAtPoint:location];    

if ([node.name isEqualToString:@"start"]) 
    SKAction *changeTexture = [SKAction runBlock:^
        self.start.texture = [SKTexture textureWithImageNamed:@"startButton2"];   
    ];
    SKAction *wait = [SKAction waitForDuration:2.f];
    SKAction *presentAnotherScene = [SKAction runBlock:^        
        MyScene *myScene = [MyScene sceneWithSize:self.size];
        [self.view presentScene:myScene transition:[SKTransition pushWithDirection:SKTransitionDirectionLeft duration:0.5]];
    ];
    [self runAction:[SKAction sequence:@[changeTexture,wait,presentAnotherScene]]];
    

此外，我希望当用户将手指从按钮上擦掉时，按钮会重新生成动画。

这似乎毫无意义，因为当用户按下按钮时，您正在转换到另一个场景。

【参考方案2】：

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event 
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];
if ([node.name isEqualToString:@"start"]) 
    startButton.texture = [SKTexture textureWithImageNamed:@"startButton2"];
elsestartButton.texture = [SKTexture textureWithImageNamed:@"startButton1"];

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];
if ([node.name isEqualToString:@"start"]) 
    startButton.texture = [SKTexture textureWithImageNamed:@"startButton2"];


-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInNode:self];
SKNode *node = [self nodeAtPoint:location];
if ([node.name isEqualToString:@"start"]) 
        //Start Button Actions