点击它后,有没有办法在Cocos2d中获取菜单按钮的位置?
所以我有一个菜单:
HelloWorld.h
//creating a menu
CCMenu *menu;
HelloWorld.m
// initializing the menu and its position
menu = [CCMenu menuWithItems:nil];
menu.position = ccp(0,0);
// set cells in placing grid
[self setItem];
[self addChild:menu];
- (void)setItem
{
//this method is a loop that creates menu items
//but i've simplified it for this example, but please keep in mind that there are lots
//of menu items and tagging them could be troublesome
for (int i = 1; i <= 13; i++) {
for (int j = 1; j <= 8; j++) {
// this creates a menu item called grid
CCMenuItem grid = [CCMenuItemSprite
itemWithNormalSprite:[CCSprite spriteWithSpriteFrameName:@"menuItem.png"]
selectedSprite:[CCSprite spriteWithSpriteFrameName:@"selected.png"]
target:self
// when button is pressed go to someSelector function
selector:@selector(someSelector:)];
//coordinates
float x = (j+0.55) * grid.contentSize.width;
float y = (i-0.5) * grid.contentSize.height;
//passing the coordinates
grid.position = ccp(x, y);
//add grid to the menu
[menu addChild:grid];
//loop unless finished
}
}
}
-(void)someSelector:(id)selector
{
//i know when the button is pressed but is there any way
//to pass selected menu coordinates to this function?
NSLog(@"Grid is pressed");
}
基本上上面发生的是 - 我创建一个菜单,然后我调用一个创建菜单项的功能,一旦创建了这些菜单项,它们就被添加到菜单中。每个菜单项都有一个self目标,而selector是someSelector函数,我想将参数传递给(菜单按钮位置)。
我想在这里做的是,
当我在模拟器中运行程序时,我希望能够按下菜单按钮的位置。
谢谢,期待收到您的回复。
我想我找到了解决自己问题的方法:
-(void)someSelector:(id)selector
必须改为
-(void)someSelector:(CCMenuItem *) item
然后你可以这样做:
NSLog(@"Grid is pressed %f %f", item.position.x, item.position.y);
瞧,瞧! :)
答案 0 :(得分:4)
在您的处理程序中,您可以将发件人强制转换为CCMenuItem并从中访问其位置:
-(void)someSelector:(id)sender
{
//i know when the button is pressed but is there any way
//to pass selected menu coordinates to this function?
NSLog(@"Grid is pressed");
CCMenuItem* menuItem = (CCMenuItem*)sender;
float x = menuItem.position.x;
float y = menuItem.position.y;
}