easefunSZ / cocos2d-android

Automatically exported from code.google.com/p/cocos2d-android
Other
0 stars 0 forks source link

Menus can only be clicked once #7

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago
What steps will reproduce the problem?
1. Launch the MenuTest demo 
2. Click on any menu item
3. Try to click any menu item again

Expected: menu items can be clicked repeatedly. 
Actual: after first click the menu does not acknowledge further clicks

Tested with version from Jan,25th on both simulator and Nexus One. 

Tested this with the MenuTest application shipped with the package aswell 
as with my own app, using different menu types, including 
MenuItemImage, MenuItemSprite and MenuItemLabel.

Original issue reported on code.google.com by marcelo.emmerich@gmail.com on 26 Feb 2010 at 10:03

GoogleCodeExporter commented 8 years ago
Not sure this is the actual cause, but the coordinates that are used in the 
itemForTouch 
function in Menu.java differ between the first and subsequent calls. Especially 
the 
coordinates in the line
CCPoint local = item.convertToNodeSpace(touchLocation.x, touchLocation.y);
are different and make no sense to me. The subsequent call to containsPoint 
does never 
return true after the first time.

Original comment by marcelo.emmerich@gmail.com on 26 Feb 2010 at 12:15

GoogleCodeExporter commented 8 years ago
[deleted comment]
GoogleCodeExporter commented 8 years ago
silly workaround:
    private MenuItem itemForTouch(MotionEvent event) {
        CCPoint touchLocation =
Director.sharedDirector().convertCoordinate(event.getX(), event.getY());
        float menuX = getPositionX();
        float menuY = getPositionY();

        for (int i = 0; i < children.size(); i++) {
            MenuItem item = (MenuItem) children.get(i);
            CCRect r = item.rect();
            r.origin.x +=menuX;
            r.origin.y +=menuY;
            if (CCRect.containsPoint(r, touchLocation)) {
                return item;
            }
        }
        return null;
    }

Original comment by webdev.p...@gmail.com on 2 Apr 2010 at 3:13

GoogleCodeExporter commented 8 years ago
The problem is the function:

    private CCAffineTransform nodeToWorldTransform() {
        CCAffineTransform t = nodeToParentTransform();

        for (CocosNode p = parent; p != null; p = p.parent)
            t.concatenate(p.nodeToParentTransform());

        return t;
    }

nodeToParentTransform returns a reference to the this.transform_ and the for 
loop concatenate inside the variable. The second call concatenate again into 
this.transform_ the nodeToParent transforms, so the final transform is fucked. 
My solution:

   CCAffineTransform t = new CCAffineTransform( nodeToParentTransform() );

Original comment by zhen.sy...@gmail.com on 13 Aug 2010 at 3:30