Players running into walls while they try to open a door causes crash

[cbcerquiaga]

I can't recreate it consistently, but several times now, a player attempting to open a door in the exploring scene has led to an error "Attempt to call function 'has_method' in base 'null instance' on a null instance" on line 147 of the player 2 script or 143 in the player 1 script. That line reads:

if collision_objects.keys()[i].has_method('handle_collide'):

I think it has to do with colliding with the walls in the scene, and maybe with pressing the button to open doors while the game is still trying to handle the collision.