Update demo scripts

Author: TokisanGames

project/demo/src/Player.gd

@@ -18,7 +18,7 @@ extends CharacterBody3D
 		$CollisionShapeRay.disabled = ! collision_enabled
 
 
-func _physics_process(delta):
+func _physics_process(delta) -> void:
 	var direction: Vector3 = get_camera_relative_input()
 	var h_veloc: Vector2 = Vector2(direction.x, direction.z) * MOVE_SPEED
 	velocity.x = h_veloc.x
@@ -56,7 +56,7 @@ func get_camera_relative_input() -> Vector3:
 	return input_dir		
 
 
-func _input(event: InputEvent):
+func _input(event: InputEvent) -> void:
 	if event is InputEventMouseButton and event.pressed:
 		if event.button_index == MOUSE_BUTTON_WHEEL_UP:
 			MOVE_SPEED = clamp(MOVE_SPEED + 5, 0, 9999)

project/demo/src/UI.gd

@@ -20,6 +20,8 @@ func _process(delta) -> void:
 func _unhandled_key_input(event: InputEvent) -> void:
 	if event is InputEventKey and event.pressed:
 		match event.keycode:
+			KEY_F8:
+				get_tree().quit()
 			KEY_F10:
 				var vp = get_viewport()
 				vp.debug_draw = (vp.debug_draw + 1 ) % 4