分数标签显示值覆盖

Question

当分数更新时，一个新的分数值标签会覆盖显示屏上的旧分数，因为这个分数是不可读的，如何更新新分数？这是我得到的：

SKLabelNode *ScoreLabel;
NSInteger score = 0;
-----------------------------
-(void)Scoring{
score = score +1;
ScoreLabel = [SKLabelNode labelNodeWithFontNamed:@"Arial"];
ScoreLabel.position = CGPointMake(CGRectGetMidX(self.frame), 960);
ScoreLabel.text = [NSString stringWithFormat:@"%ld",(long)score];
[self addChild:ScoreLabel];
}

Answer 1

每次分数更改顶部的新标签时，您都会添加。像这样更改代码：

-(void)Scoring{
  score = score +1;
  if (ScoreLabel == nil) {
    ScoreLabel = [SKLabelNode labelNodeWithFontNamed:@"Arial"];
    ScoreLabel.position = CGPointMake(CGRectGetMidX(self.frame), 960);
    [self addChild:ScoreLabel];
  }
  ScoreLabel.text = [NSString stringWithFormat:@"%ld",(long)score];

}