feat(相机): 添加鼠标位置对相机偏移的影响

实现鼠标位置影响相机偏移的功能，使相机能够根据鼠标在屏幕上的位置进行轻微偏移，提升游戏交互体验

components/Scenes/World.tscn

@@ -86,6 +86,8 @@ limit_top = -1800
 limit_right = 2400
 limit_bottom = 1800
 position_smoothing_enabled = true
+drag_horizontal_enabled = true
+drag_vertical_enabled = true
 editor_draw_limits = true
 script = ExtResource("5_mk7bv")
 constantOffset = Vector2(0, -80)

scripts/Tools/Managers/CameraManager.gd

@@ -17,6 +17,7 @@ func _physics_process(_delta):
 	if is_instance_valid(UIState.player):
 		position = UIState.player.position + constantOffset
 		position += MathTool.sampleInCircle(shakeIntensity)
+		position += MouseTool.getPositionByScreen(Vector2.ONE * 0.5, self ) / 2
 
 static func shake(millseconds: float, intensity: float = 10, steper: Callable = func(currentValue, _totalValue, _restPercent): return currentValue):
 	if StarterPanel.buildingShader: return

scripts/Tools/MouseTool.gd

@@ -0,0 +1,5 @@
+class_name MouseTool
+
+static func getPositionByScreen(anchor: Vector2, by: Node):
+	var viewport = by.get_viewport()
+	return viewport.get_mouse_position() - viewport.get_visible_rect().size * anchor

scripts/Tools/MouseTool.gd.uid

@@ -0,0 +1 @@
+uid://yf2h5ni3gobm