koobas.hobune.stream
Box colliders on a grid. How to prevent unwanted collisions at distance 0?
On a 2D grid of squares (like a chess board), there are some static box colliders (see brown squares in the image) and moving box colliders (chickens) that automatically move either vertically or horizontally at a constant speed. Both the static and moving colliders have the same dimensions (1 x 1).
When the chickens collide with a static box they change direction by turning 90 degrees. If I set the trigger to OnTriggerEnter2D or OnTriggerStay2D they incorrectly collide with static boxes on adjacent rows or columns because the distance between them is 0. If I set the trigger to OnTriggerExit2D, they move slightly too far before triggering the collision, making their next collision incorrect.
How can I change this so that the trigger only occurs when chicken box colliders hit static box colliders in the same row or column when the distance between them is 0?
