目标c-将CCMenu与网格对齐

Question

有人知道让CCMenuItems数组与网格对齐的最佳实践方法吗？这是一个cocos2d问题

例如：

int levelCount = 10;
CCMenu *menuArray = [CCMenu menuWithItems:nil];
for (int x = 1; x<=levelCount; x++) {
    CCLOG(@"Creating level icon for Level %i", x);     
    [menuArray addChild:[CCMenuItemImage itemFromNormalImage:@"Button2n.png" 
                                               selectedImage:@"Button2s.png" 
                                                      target:self 
                                                    selector:@selector(onPlay:)]];
}
[menuArray alignToGridWouldbeGreat????!!!!];
[self addChild:menuArray];

我可以在列或行中垂直、水平对齐，但不能换行列或行配置。

提前感谢！

Answer 1

您只需要调用重载的alignItemsInColumns或alignItemsRows方法之一。例如，如果您有15个菜单项，并且您想要3行5列，请执行以下操作：

CCMenu* menu = [CCMenu menuWithItems:...];
NSNumber* itemsPerRow = [NSNumber numberWithInt:5];
[menu alignItemsInColumns:itemsPerRow, itemsPerRow, itemsPerRow, nil];

唯一不利的一面是，在与网格对齐时，似乎没有设置填充的方法。

Answer 2

好吧，虽然没有我想要的那么灵活，但我有一个足够好的解决方案。如果其他人也觉得这个代码有用，他们可以随意使用。

//////// Put images (or whatever) for all levels in an array /////////        
    int levelCount = 15;
    NSMutableArray* menuArray = [NSMutableArray arrayWithCapacity:levelCount];
    for (int x = 1; x<=levelCount; x++) {
        CCLOG(@"Creating level icon for Level %i", x);
        CCMenuItemImage* item = [CCMenuItemImage itemFromNormalImage:@"Button2n.png" 
                                                       selectedImage:@"Button2s.png" 
                                                              target:self 
                                                            selector:@selector(onPlay:)];
        [menuArray addObject:item];                        
    }

////////按特定列数排列///////

    CGSize screenSize = [CCDirector sharedDirector].winSize;
    int columns = 5;
    int spaceBetweenColumns = columns + 1;
    int spacing = screenSize.width / spaceBetweenColumns;
    CCLOG(@"screenWidth (%f) / columnsWithEdges (%i) = spacing = %i, ", screenSize.width, spaceBetweenColumns, spacing);
    CGPoint currentDrawPoint = CGPointMake(0, screenSize.height - spacing);  // start at the top 
    for (CCMenuItem *item in menuArray) {
        currentDrawPoint.x = currentDrawPoint.x + spacing;
        if (currentDrawPoint.x > (columns * spacing)) {
            // start a new line as we have reached the end of the previous one
            currentDrawPoint.x = spacing;
            currentDrawPoint.y = currentDrawPoint.y - spacing;
        }
        item.position = currentDrawPoint;
        [self addChild:item];
    }

Answer 3

这是我的解决方案，我希望它能有所帮助。

首先在某个地方定义这个结构：

typedef struct
{
 int cols;
}RowInfo;

然后：

-(void)layoutMenu:(CCMenu *)menu rowInfo:(RowInfo[])inf rows:(int)rows padding:(CGPoint)padding     
{
CCMenuItem *dummy = (CCMenuItem *)[menu.children objectAtIndex:0];
int itemIndex = 0;
float w = dummy.contentSize.width;
float h = dummy.contentSize.height;
CGSize screenSize = [[CCDirector sharedDirector]winSize];
CCArray *items = [menu children];
float startX;
for (int i = rows - 1; i >=0; i--)
{
    int colsNow = info[i].cols;
    startX = (screenSize.width - (colsNow * w + padding.x * (colsNow - 1)))/2;
    float y = i * (padding.y + h);
    for (int j = 0; j < colsNow; j++)
    {
        CCMenuItem *item = (CCMenuItem *)[items objectAtIndex:itemIndex];
        item.anchorPoint = ccp(0,0);
        item.position = ccp(startX, y);
        startX += padding.x + w;
        itemIndex++;
    }
}
}

调用如下（自定义键盘）：

//create custom keyboard
NSArray *captions = [NSArray arrayWithObjects:
@"Q", @"W", @"E", @"R", @"T", @"Y", @"U", @"I", @"O", @"P",
   @"A", @"S", @"D", @"F", @"G",@"H", @"J", @"K", @"L",
     @"Z", @"X", @"C", @"V", @"B", @"N", @"M", nil];
CCMenu *menu = [CCMenu menuWithItems:nil];
[self addChild:menu];
for (NSString *caption in captions)
{
    CCLabelTTF *label = [CCLabelTTF labelWithString:caption fontName:@"Courier" fontSize:25];
    CCMenuItemLabel *item = [CCMenuItemLabel itemWithLabel:label target:self selector:@selector(callDelegate:)];
    [menu addChild:item];
}
RowInfo info[3] = {{7}, {9}, {10}}; //inverse order
[self layoutMenu:menu withRowInfo:info rows:3 padding:ccp(15, 15)];

Answer 4

也许你可以试试这个。。。。

[menuArray alignItemsVerticallyWithPadding:20.0];

或

[first_menu alignItemsHorizontallyWithPadding:20.0];

Answer 5

据我所知，Anish的答案是你最好的行动方案。这就像对齐网格一样，这是我个人使用的。只要设置你的菜单位置和对齐填充，你就应该有你想要的。