bool MidPointCollisionStrategy::execute(
const MultiframeSprite& obj1, const MultiframeSprite& obj2) const {
int COLLISION_DISTANCE =
obj1.getCurrentFrameref()->getWidth()/2 + obj2.getCurrentFrameref()->getWidth()/2;
float xobj1 = obj1.X()+obj1.getCurrentFrameref()->getWidth()/2;
float yobj1 = obj1.Y()+obj1.getCurrentFrameref()->getHeight()/2;
float xobj2 = obj2.X() + obj2.getCurrentFrameref()->getWidth()/2;
float yobj2 = obj2.Y() + obj2.getCurrentFrameref()->getHeight()/2;
return distance(xobj1, yobj1, xobj2, yobj2) < COLLISION_DISTANCE;
}
bool RectangularCollisionStrategy::execute(
const MultiframeSprite& obj1, const MultiframeSprite& obj2) const {
float left1 = obj1.X();
float left2 = obj2.X();
float right1 = left1+obj1.getFrame()->getWidth();
float right2 = left2+obj2.getFrame()->getWidth();
float top1 = obj1.Y();
float top2 = obj2.Y();
float bottom1 = top1+obj1.getFrame()->getHeight();
float bottom2 = top2+obj2.getFrame()->getHeight();
if ( right1 < left2 ) return false;
if ( left1 > right2 ) return false;
if ( bottom1 < top2 ) return false;
if ( bottom2 < top1 ) return false;
return true;
}