What is the easiest way to detect an intersection between any two quadrilaterals? I want to know this because I'm creating a game with quadrilateral tiles, and to see if they collide, then you can place down a new quadrilateral.
I'm pretty sure there's a simple formula, but I'm not sure what it is, and after browsing through a lot of StackExchange sites, I found nothing to do with quadrilateral collisions; just simpler circle and rectangles collisions. I'm not sure, but a polygon-polygon collision isn't going to be my first pick for the formula, but if it's the only one, then that's fine.
To sum up, I really just need to know whether there is a quick formula to detect if any two quadrilaterals are colliding. I just need to have a true or false, and not anything more.
Thanks in advance!