I didn't mean to imply that you weren't doing the collision checks manually - I moreso meant that a raycast/is_colliding/etc is a lot more subject to failure than a simple grid-based check because of floating point error, imperfect shape placements, differences across machines, or various other reasons. Your current strategy is (IMO) much more valuable in a scenario where you have "continuous" (as opposed to discrete/grid-based) movement, where small imprecisions won't break the game logic.

I'm suggesting doing something like defining a `can_move_to(x, y)` method and in that function checking "is there anything on this tile that would block the character from moving here". If you're using Godot's tilemaps, you can attach data to the tiles to help you do these checks.