# collision

sudde gameeef

Greenhorn

Posts: 19

posted 3 years ago

i was test collision between ball and box. i have a ball and long rect(platform) on screen. the collision part works fine. but i want to test where the ball is touch the platform. so if ball touch the ball from left or right or top or bottom. but when i run this. but it is not seem to be going in any of the inner if statments.

sudde gameeef

Greenhorn

Posts: 19

Campbell Ritchie

Sheriff

Posts: 50687

83

posted 3 years ago

I think this discussion would fit better in the GUIs forum, so I shall move it.

I think you will have to work out how two shapes collide by comparing their locations. Draw two shapes on a piece of paper.

Example: Two “ball”s will collide with a straight line connecting their two centres. That line will consist of radii of the two shapes, and its length and direction can be calculated by the usual geometrical methods, maybe implemented by the hypot and atan2 methods of the Math class.

I think you will have to work out how two shapes collide by comparing their locations. Draw two shapes on a piece of paper.

Example: Two “ball”s will collide with a straight line connecting their two centres. That line will consist of radii of the two shapes, and its length and direction can be calculated by the usual geometrical methods, maybe implemented by the hypot and atan2 methods of the Math class.