Open Source Glasgow

1. New scene: click 3D Scene, rename to 'world'
2. Create floor. Add MeshInstance3D to scene
3. Set Mesh type to 'New PlaneMesh'
4. Change size. Transform → scale to 20
5. Create collision mesh. Using the 'Mesh' top button, choose 'Trimesh Static Body'. That automatically creates a StaticBody3D of the correct type, and then adds a CollisionShape3D.
6. New wall. Create another new mesh. This time the Mesh should be New BoxMesh'. Move walls to edge, set z to 20
7. Tweak the wall height, 'y to the sky', set to 10
8. Duplicate for the other three walls

1. New scene. Click + next to the world scene. Other node. Search for CharacterBody3D. Name it 'player'.
2. Add subnode. Click +, search for MeshInstance3D. Set Mesh shape to Capsule shape.
3. Fix the height. Transform, adjust Y to 1m.
4. Select player node, add new node, Camera3D.
5. Adjust Camera height to eye height.
6. Create script. Select player node. Use script+/scroll button. Select a template for Basic movement.
7. Add new variable. const TURN_SPEED = 0.05
8. Add new code

if Input.is_action_pressed("ui_left"):
  self.rotate_y(TURN_SPEED)
if Input.is_action_pressed("ui_right"):
  self.rotate_y(-TURN_SPEED)