I'm building simple arkanoid game with a bit of Twist.
The paddle is controlled by two touch. the center between two fingers(ex.thumbs) will become the position of the paddle, and the tilt between two thumbs will change the paddle angle.
The problem is how to limit the position of the paddle so it won't go beyond the border/mad I've made around the game?
Checking collision doesn't work in this case.
Limitting x of paddle also impossible, because the paddle can shift its angle.