This is an implementation of stair stepping based on Shifty's Godot Character Movement Manifesto and Collision Response: How to Climb a Staircase Properly.
TrenchBroom and Qodot are used for map building.
Kenney's Prototype Textures is used for texturing.
Garbaj FPS Controller is used for basic movement.
Old Godot 3.5+ compatible branch: 3.5