# Collision detection of off-screen objects (really far away objects...!) **URL:** \ **Category:** programming\ **Created:** [July 19, 2011, 7:26pm UTC](https://forum.kirupa.com/t/collision-detection-of-off-screen-objects-really-far-away-objects/323818 "2011-07-19T19:26:46Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![franboud](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@franboud](https://forum.kirupa.com/u/franboud)\ **Post date:** [July 19, 2011, 7:26pm UTC](https://forum.kirupa.com/t/collision-detection-of-off-screen-objects-really-far-away-objects/323818/1 "2011-07-19T19:26:46Z")
Hi everyone, I’ve been trying all day to solve this problem I have… I’m currently developing a racing game. The player controls one car, and 7 cars are controlled by AI. The MovieClip which contains the race art is really big, like 4000px \* 2000px, and in the AS I’m scaling it by 5. I also have a MovieClip for collision detection of the sides of the race (the grass). Let’s call this MovieClip mc\_collision\_detection. To detect collision with the grass, I run a hitTestPoint to each wheels of the car with mc\_collision\_detection. The race runs great! Except for one thing… When the AI cars are far away from my car, they don’t make the collision with mc\_collision\_detection! I think this is because the stage is too big, and the mc\_collision\_detection isn’t rendered far away from my car. Is there a way to force the rendering of this MovieClip? Did anyone encountered a problem like this before?