Fix direction bug in PhysicsUpdateSystem #23
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In the prior version of `PhysicsUpdateSystem` logic, if the `PhysicsBody.body.velocity.x` velocity is zero, the `Position.direction.x` will always be updated to point to the negative direction. This was causing the following problematic behavior: - an entity that "walks" rightward and is stopped by a "wall" will switch to facing left when it comes to a stop - an entity that "walks" leftward and is stopped by a "wall" will continue facing left when it comes to a stop After this commit, the behavior is fixed and made consistent by ensuring that when the X velocity is zero we do not update the X direction.
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In the prior version of
PhysicsUpdateSystemlogic, if thePhysicsBody.body.velocity.xvelocity is zero, the
Position.direction.xwill always be updated to point to the negative direction.This was causing the following problematic behavior:
will switch to facing left when it comes to a stop
will continue facing left when it comes to a stop
After this commit, the behavior is fixed and made consistent by ensuring that
when the X velocity is zero we do not update the X direction.