I am trying to remake a game with a left and right playfield where there is a 1 pixel wide dividing wall that occasionally moves position. When the wall is set to 2 pixels wide the player sprites (using gridmovement) cannot pass through them but when set to 1 pixel wide they do pass. Is this related to a collision mask bug I have been reading about?
If gridmovement supported a halt movement I could workaround this issue. Other wise I could have a seperate, invisible and wider walls for each side, but I would need help grouping:
left player+its wall to only collide
right player+its wall to only collide
10 points if you can guess the game