feat: complete mobile UI implementation

project/ui/atlas_ui.gd

@@ -35,6 +35,10 @@ var _map_origin := Vector2.ZERO
 var _map_px := Vector2.ZERO
 var _world_size_m := Vector2(1, 1)
 var _center_position_adjust := Vector2.ZERO
+var _touches: Dictionary = {}
+var _touch_dragging := false
+var _touch_drag_origin := Vector2.ZERO
+var _touch_map_origin := Vector2.ZERO
 
 func setup(metin_world: Node, ui_manager: CanvasLayer, get_player: Callable,
 		name := "", m2client: Node = null) -> void:
@@ -64,6 +68,8 @@ func close() -> void:
 	if is_open() and ui:
 		ui.close(_win)
 	_win = null
+	_touches.clear()
+	_touch_dragging = false
 
 # CPythonMiniMap::SetAtlasCenterPosition ultimately calls the atlas window's
 # SetCenterPositionAdjust. Keep the same screen-space adjustment instead of
@@ -119,6 +125,7 @@ func _build_window() -> void:
 	_map_view.position = Vector2(14, 42)
 	_map_view.size = Vector2(VIEW_SIZE.x - 28, VIEW_SIZE.y - 80)
 	_map_view.clip_contents = true
+	_map_view.mouse_filter = Control.MOUSE_FILTER_STOP
 	_map_view.gui_input.connect(_on_map_input)
 	_win.add_child(_map_view)
 	_overlay = AtlasOverlay.new()
@@ -176,6 +183,39 @@ func _build_map() -> void:
 		_coord.text = "坐标：--（缺 minimap.dds，仍可查询）"
 
 func _on_map_input(event: InputEvent) -> void:
+	if event is InputEventScreenTouch:
+		var touch := event as InputEventScreenTouch
+		if touch.pressed:
+			_touches[touch.index] = touch.position
+			if _touches.size() == 1:
+				_touch_dragging = true
+				_touch_drag_origin = touch.position
+				_touch_map_origin = _map.position
+			else:
+				# A second finger is a gesture boundary.  Do not continue the
+				# first finger's drag while pinch/scroll state is ambiguous.
+				_touch_dragging = false
+		else:
+			_touches.erase(touch.index)
+			if _touches.is_empty():
+				_touch_dragging = false
+			elif _touches.size() == 1:
+				# Re-arm panning for the remaining finger without jumping the map.
+				var remaining := int(_touches.keys()[0])
+				_touch_dragging = true
+				_touch_drag_origin = _touches[remaining]
+				_touch_map_origin = _map.position
+			_map_view.accept_event()
+			return
+	if event is InputEventScreenDrag:
+		var drag := event as InputEventScreenDrag
+		if _touches.has(drag.index):
+			_touches[drag.index] = drag.position
+		if _touches.size() == 1 and _touch_dragging and _touches.has(drag.index):
+			_map.position = _touch_map_origin + drag.position - _touch_drag_origin
+			_overlay.position = _map.position
+		_map_view.accept_event()
+		return
 	if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT:
 		_dragging = event.pressed
 		if _dragging:
@@ -187,11 +227,14 @@ func _on_map_input(event: InputEvent) -> void:
 		_overlay.position = _map.position
 		_map_view.accept_event()
 	elif event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_RIGHT and event.pressed:
-		_map_origin = (_map_view.size - _map.size) * 0.5
-		_map.position = _map_origin
-		_overlay.position = _map.position
+		_recenter_map()
 		_map_view.accept_event()
 
+func _recenter_map() -> void:
+	_map_origin = (_map_view.size - _map.size) * 0.5 + _center_position_adjust
+	_map.position = _map_origin
+	_overlay.position = _map.position
+
 func _process(_dt: float) -> void:
 	if is_open():
 		_update_player_marker()