Hide mouse pointer after no movement is registered

Add a new global that, whenever the mouse is moved, restarts a 3 seconds
one-shot timer. Upon timeout, hide the mouse.

This makes the mouse visible only when using it. Assuming that people is
used to move the mouse in order to find its position on screen.

#807

Author: manuq

project.godot

@@ -33,6 +33,7 @@ CameraShake="*res://scenes/globals/camera_shaker/camera_shake.tscn"
 InputHelper="*res://addons/input_helper/input_helper.gd"
 AspectRatioDebugger="*res://scenes/globals/aspect_ratio_debugger/aspect_ratio_debugger.tscn"
 InputGlobal="*res://scenes/game_elements/props/hint/input_key/InputHintManager.gd"
+MouseManager="*res://scenes/globals/mouse_manager/mouse_manager.tscn"
 
 [debug]
 

scenes/globals/mouse_manager/mouse_manager.gd

@@ -0,0 +1,15 @@
+# SPDX-FileCopyrightText: The Threadbare Authors
+# SPDX-License-Identifier: MPL-2.0
+extends Node
+
+@onready var hide_timer: Timer = %HideTimer
+
+
+func _input(event: InputEvent) -> void:
+	if event is InputEventMouseMotion:
+		Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+		hide_timer.start(3)
+
+
+func _on_hide_timer_timeout() -> void:
+	Input.mouse_mode = Input.MOUSE_MODE_HIDDEN

scenes/globals/mouse_manager/mouse_manager.gd.uid

@@ -0,0 +1 @@
+uid://rw3yh3185lpn

scenes/globals/mouse_manager/mouse_manager.tscn

@@ -0,0 +1,14 @@
+[gd_scene load_steps=2 format=3 uid="uid://cnihu6fwcogid"]
+
+[ext_resource type="Script" uid="uid://rw3yh3185lpn" path="res://scenes/globals/mouse_manager/mouse_manager.gd" id="1_u8i10"]
+
+[node name="MouseManager" type="Node"]
+script = ExtResource("1_u8i10")
+
+[node name="HideTimer" type="Timer" parent="."]
+unique_name_in_owner = true
+wait_time = 3.0
+one_shot = true
+autostart = true
+
+[connection signal="timeout" from="HideTimer" to="." method="_on_hide_timer_timeout"]