objective-c - 动态身体超越框架

Question

我是 Cocos2d 和 Box2d 的新手，我有一些问题要问你。在开发或尝试玩游戏时，我将动态身体拖到边界（到我的 ipone 的框架），并且发生了一些事情，我的动态身体的一半超出了框架！我不知道为什么？请尽快帮助我！

Answer 1

我解决了。我将以下代码写入 ccTouchesMoved 函数。

CGSize s = [[CCDirector sharedDirector] winSize];
            // Update if it is moved
            CGPoint location = [tj.touch locationInView:tj.touch.view];
            location = [[CCDirector sharedDirector] convertToGL:location];
            int deger=50;  // mydynamicbody width
            float xcordinate=location.x;
            float ycordinate=location.y;
            if (xcordinate>(s.width-deger)) 
            {
                xcordinate=s.width-deger;
            }
            if (ycordinate>(s.height-deger)) 
            {
                ycordinate=s.height-deger;
            }
            if (xcordinate<deger) 
            {
                xcordinate=deger;
            }
            if(ycordinate<deger)
            {
                ycordinate=deger;
            }
            //  NSLog(@"cordinates %f , %f %g %g",xcordinate,ycordinate,s.width,s.height);
            b2Vec2 worldLocation = b2Vec2(ptm(xcordinate),ptm(ycordinate) );
            //b2Vec2 worldLocation = b2Vec2(200, 200);
            tj.mouseJoint->SetTarget(worldLocation);