expanding the assassin idea you can make it transparent and green, and slowly loose transparency and turning into a red. Or you got a chance that one of your cell will start turning red, and at this point you need spot it and start to move it out. I am asking just in case, I’m so inspired by this mechanic , can I tweak it a bit and maybe use it in my next game? I will add you in credits in that case. I mean the mouse and gravity thing , not the whole theme
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Sure! Feel free to use the mechanism, no credit necessary :3 It's really simple. Create a Area2D that always follows the mouse
position = get_global_mouse_position()
Then, each frame, for everything that is within the range, change their direction
position = position.move_toward(p, strength) #in the game, strength is 0.2 (before upgrade) and 1.2 (after upgrade)
direction = (position - mouse_position).normalized()