CGpoint到NSMutableArray中的CCmenuItem

Question

    brickorna = [NSMutableArray arrayWithCapacity:10];

    int chipSize = 100;
    gridPoints = [NSMutableArray arrayWithObjects:
                  [NSValue valueWithCGPoint:CGPointMake(chipSize, chipSize)],
                  [NSValue valueWithCGPoint:CGPointMake(chipSize*2, chipSize)],
                  [NSValue valueWithCGPoint:CGPointMake(chipSize*3, chipSize)],

                  [NSValue valueWithCGPoint:CGPointMake(chipSize, chipSize*2)],
                  [NSValue valueWithCGPoint:CGPointMake(chipSize*2, chipSize*2)],
                  [NSValue valueWithCGPoint:CGPointMake(chipSize*3, chipSize*2)],

                  [NSValue valueWithCGPoint:CGPointMake(chipSize, chipSize*3)],
                  [NSValue valueWithCGPoint:CGPointMake(chipSize*2, chipSize*3)],
                  [NSValue valueWithCGPoint:CGPointMake(chipSize*3, chipSize*3)],
                  nil];


    for (int i = 0; i <= 8; i++) { //createing chips and adding them to array
    CCMenuItemImage *bricka = [CCMenuItemImage itemFromNormalImage:@"Icon.png" selectedImage:nil];
        [brickorna addObject:bricka];
    }

    for (int a = 0; a <= 8; a++) { //adding the chips to scene

        CCMenuItemImage *tempB = [brickorna objectAtIndex:a];
        tempB.position = [[gridPoints objectAtIndex:a] CGPointValue];

        [self addChild:[brickorna objectAtIndex:a]];
    }

我在试着做一个瓷砖游戏，但是卡住了。请看“这是错的”这一行。我试图将CGPoint坐标从gridPointArray传递给BrickornaArray中的CCmenuItem(bricka)，但没有成功。我想不出它的语法。

Answer 1

CCMenuItemImage没有名为' CGPointValue‘的属性-它有一个CGPointValue类型的属性，名为position，这是您应该设置的属性。

类似于：

[brickorna objectAtIndex:a].position = [[gridPoints objectAtIndex:a] CGPointValue];

position属性在CCNode中声明，CCMenuItem (和CCMenuItemImage)继承自该属性。