我们怎样才能在iphone游戏中创造得分

Question

我想在目标被击中时创建得分......

每当目标被击中时

int targetHit=0;
targerhit=targethit+1;

现在我想在标签中显示....

CCLabel* label2 = [CCLabel  labelWithString:@"null"   <-----i want to add score herer?and keep changing it ?how can i
                                         fontName:@"Marker Felt"
                                         fontSize:30];
        label2.position = ccp(400, 295);


        [self addChild:label2];

Answer 1

我还没有使用cocos2d，但这里有一些我发现的信息。

• （void）setString：（NSString *）string

  更改要渲染的字符串

  警告： 更改字符串与创建新的CCLabel一样昂贵。

Answer 2

假设您有一个整数得分和与CCLabel scoreLabel相关联的String scoreString。这些thre元素必须都是您的类的属性（可能是CCLayer）。 现在，如果您只想更新scoreLabel，您必须：

//create a range object
NSRange range;
//it starts from the first character(0) and ends at the scoreString length
range.location=0;
range.length = [scoreString length];
//then delete the characters of the string which fall in the range (that means all)
[scoreString deleteCharactersInRange:range];
//then use appendFormat to update the scoreString with the latest score value
[scoreString appendFormat:@"%07d",score];
//therefore update the label
[scoreLabel setString:scoreString];