如何從CCLabelTTF精靈中獲取獨特的字母當觸摸移動到cocos2d中

Question

我有一個8x8矩陣的字母遊戲，當我將觸摸移動到標籤中，標籤值重複，如何克服這個問題，字母在8x8中隨機位置矩陣。

-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{ 
    UITouch *touch=[touches anyObject]; 
    CGPoint newlocation=[touch locationInView:[touch view]]; 

    newlocation=[[CCDirector sharedDirector] convertToGL:newlocation]; 
    for (int i=0; i<GRID_WIDTH; i++) { 
     for (int j=0; j<GRID_HEIGHT; j++) { 
     if (CGRectContainsPoint([grid[i][j].letter boundingBox],newlocation)) { 
      CCLOG(@"letters %@",[grid[i][j].letter string]); 
      [letterarray addObject:[grid[i][j].letter string]]; 
     } 
     } 
    } 
} 

Answer 1

啊......太多touchMoved更新在單個網格元素！試試這個

 if (CGRectContainsPoint([grid[i][j].letter boundingBox],newlocation)) { 
     CCLOG(@"letters %@",[grid[i][j].letter string]); 
     NSString *thisLetter = [grid[i][j].letter string]; 
     if (![letterArray containsObject:thisLetter]) { 
      [letterarray addObject:thisLetter]; 
     } else { 
      NSLog(@"*** Skipping letter, [%@] already in the array",thisLetter); 
     } 
    }