Check touch on rotated sprite

cocos2d-x C++
1

When sprite is not rotated it’s simple, just create a rect a check if point is inside, but what about rotated? I’ve found some solution for old cocos2d, but I can’t port it to cocos2d-x.

2

I dont understand Your problem. If the rotation was made on the object itself, so You have something like this:

auto rotate = RotateBy::create(2.0f, 360);
YourSprite->runAction(rotate);

then You should be able to do something like this:

void YourGameClass::onTouchesBegan(const std::vector<Touch *> &touches, Event *event)
{
     for (auto touch: touches)
     {      
         Point location = this->convertTouchToNodeSpace(touch);
         if (YourSprite->getBoundingBox().containsPoint(location))
         {
              // do what You want here
          }
     }
}
3

That’s not what I wanted. Anyway I solved it:

bool Item::isTouched(Touch* touch, Event* event){
    Point locationInNode = getParent()->convertToNodeSpace(touch->getLocation());
    Size size = sprite->getContentSize();
    Rect rect = Rect(getPositionX() - size.width / 2 , getPositionY() - size.height / 2, size.width, size.height);
    
    float rad = CC_DEGREES_TO_RADIANS(getRotation());
    
    Vec2 p = locationInNode.rotateByAngle(getPosition(), rad);
    
    return rect.containsPoint(p);
}