我想暂停和取消暂停 SpriteKit 中的场景,在同一位置有 2 个按钮。在场景运行时,我想显示“暂停”按钮。当场景暂停时,我想隐藏“暂停”按钮并显示“播放”按钮。在 SpriteKit 中,您可以使用self.scene.view.paused
SpriteKit 中定义的。
我的代码:
@implementation MyScene {
SKSpriteNode *PauseButton;
SKSpriteNode *PlayButton;
}
-(id)initWithSize:(CGSize)size {
if (self = [super initWithSize:size]) {
[self Pause];
}
return self;
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
/* Called when a touch begins */
UITouch * touch = [touches anyObject];
CGPoint location = [touch locationInNode:self];
SKNode * Node = [self nodeAtPoint:location];
if([Node.name isEqualToString:@"PauseButton"]){
self.scene.view.paused = YES;
[PauseButton removeFromParent];
[self Resume];
}
if([Node.name isEqualToString:@"PlayButton"]){
self.scene.view.paused = NO;
[PlayButton removeFromParent];
[self Pause];
}
}
-(void)Pause{
PauseButton = [SKSpriteNode spriteNodeWithImageNamed:@"Pause.png"];
PauseButton.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 1.04);
PauseButton.zPosition = 3;
PauseButton.size = CGSizeMake(40, 40);
PauseButton.name = @"PauseButton";
[self addChild:PauseButton];
}
-(void)Resume{
PlayButton = [SKSpriteNode spriteNodeWithImageNamed:@"Play.png"];
PlayButton.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 1.04);
PlayButton.zPosition = 3;
PlayButton.size = CGSizeMake(60, 60);
PlayButton.name = @"PlayButton";
[self addChild:PlayButton];
}
它暂停了场景,但仍然有暂停按钮,如果我再次触摸暂停按钮,场景就会恢复。所以现在只有图像不会改变。我怎样才能解决这个问题?