Fix mobile restart and swipe aiming while firing

scripts/touch_controls.gd

@@ -15,7 +15,8 @@ const JOY_RADIUS := 92.0
 const KNOB_RADIUS := 40.0
 const BTN_RADIUS := 46.0
 const BTN_FIRE_RADIUS := 62.0
-const LOOK_SENSITIVITY := 1.7    # moltiplicatore del trascinamento nell'area di puntamento
+const LOOK_TURN_RADIANS := PI   # swipe largo quanto lo schermo = 180 gradi
+const LOOK_VERTICAL_RATIO := 0.75
 const EDGE := 24.0
 
 const COLOR_BASE := Color(1, 1, 1, 0.09)
@@ -137,7 +138,7 @@ func _input(event: InputEvent) -> void:
 	elif event is InputEventScreenDrag:
 		index = event.index
 		pos = event.position
-		relative = event.relative
+		relative = event.screen_relative
 		is_drag = true
 	elif mouse_fallback and event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT:
 		index = MOUSE_INDEX
@@ -218,9 +219,31 @@ func _drag(index: int, pos: Vector2, relative: Vector2) -> void:
 			_joy_knob = (pos - _joy_origin).limit_length(JOY_RADIUS)
 			_apply_move()
 			_root.queue_redraw()
-		Role.LOOK:
+		Role.LOOK, Role.FIRE:
 			if player and player.has_method("apply_look"):
-				player.apply_look(relative * LOOK_SENSITIVITY)
+				player.apply_look(_look_delta(relative, _screen_width()))
+
+## Stessa frazione di swipe = stessa rotazione, senza stretch o delta temporale.
+static func _look_delta(relative: Vector2, screen_width: float) -> Vector2:
+	return relative * Vector2(1.0, LOOK_VERTICAL_RATIO) * LOOK_TURN_RADIANS / maxf(screen_width, 1.0) / 0.0025
+
+func _screen_width() -> float:
+	return _size.x if DisplayServer.get_name() == "headless" else float(DisplayServer.window_get_size().x)
+
+func release_all() -> void:
+	for index in _touches.keys():
+		_release(index)
+	for action in MOVE_ACTIONS + ["shoot", "grenade", "reload", "jump"]:
+		Input.action_release(action)
+
+func _process(_dt: float) -> void:
+	if player and player.hp <= 0 and enabled:
+		release_all()
+		enabled = false
+		_root.hide()
+
+func _exit_tree() -> void:
+	release_all()
 
 ## Traduce il vettore del joystick nelle azioni di movimento (analogiche).
 func _apply_move() -> void: