feat: add nearby social interactions

scenes/Maps/WorkZoneBuildingArea.gd

@@ -8,14 +8,30 @@ extends Area2D
 # ============================================================================
 
 const INTERACTION_COLLISION_LAYER: int = 2
+const InteractionAnchorUtil = preload("res://_Core/utils/InteractionAnchor.gd")
 
 @export var buildingId: String = ""
 @export var buildingTitle: String = ""
 @export var buildingRole: String = ""
+@export var interactionDistance: float = 150.0
 
 func _ready() -> void:
 	collision_layer = INTERACTION_COLLISION_LAYER
 	collision_mask = 0
+	add_to_group("whaletown_interactable")
+
+func get_interaction_actions(player: Node2D) -> Array[Dictionary]:
+	var anchor_position: Vector2 = InteractionAnchorUtil.get_position(self)
+	var distance: float = anchor_position.distance_to(player.global_position)
+	if distance > interactionDistance:
+		return []
+	return [{
+		"id": "building:%s" % buildingId,
+		"title": "使用 %s" % (buildingTitle if not buildingTitle.is_empty() else "设施"),
+		"distance": distance,
+		"priority": 30,
+		"callback": Callable(self, "interact"),
+	}]
 
 func interact() -> void:
 	var payload := {