refactor: unify interactable components

_Core/interactions/InteractableComponent.gd

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+class_name InteractableComponent
+extends Node
+
+# 可挂载于任意 Node2D 宿主的交互组件。
+# 它统一负责交互锚点、距离过滤、白圈位置和静态动作；复杂宿主可通过
+# build_interaction_actions(component, player) 返回多个 InteractionAction。
+const GROUP: StringName = &"whaletown_interactable_component"
+
+@export_category("Interaction")
+@export var interaction_id: String = ""
+@export var interaction_title: String = ""
+@export var interaction_priority: int = 100
+@export var interaction_distance: float = 150.0
+@export var activation_method: StringName = &""
+@export var show_marker: bool = true
+
+@export_category("Anchor")
+@export var anchor_path: NodePath = NodePath("")
+
+var _host: Node2D
+
+func _ready() -> void:
+	_host = get_parent() as Node2D
+	if _host == null:
+		push_error("InteractableComponent 必须挂在 Node2D 宿主下：%s" % get_path())
+		return
+	add_to_group(GROUP)
+
+func get_actions(player: Node2D) -> Array[InteractionAction]:
+	var actions: Array[InteractionAction] = []
+	if player == null or not is_interaction_active():
+		return actions
+	var distance: float = get_anchor_position().distance_to(player.global_position)
+	if distance > interaction_distance:
+		return actions
+	if _host != null and _host.has_method("build_interaction_actions"):
+		var actions_variant: Variant = _host.call("build_interaction_actions", self, player)
+		if actions_variant is Array:
+			for action_variant: Variant in actions_variant as Array:
+				if action_variant is InteractionAction:
+					var action: InteractionAction = action_variant as InteractionAction
+					if action.is_valid():
+						action.distance = distance
+						actions.append(action)
+			return actions
+	var default_action: InteractionAction = _create_default_action()
+	if default_action != null:
+		default_action.distance = distance
+		actions.append(default_action)
+	return actions
+
+func get_marker_positions() -> Array[Vector2]:
+	if not show_marker or not is_interaction_active():
+		return []
+	return [get_anchor_position()]
+
+func get_anchor_position() -> Vector2:
+	var anchor: Node2D = _resolve_anchor()
+	if anchor == null:
+		return Vector2.ZERO
+	var collision_shape: CollisionShape2D = _first_enabled_collision_shape(anchor)
+	return collision_shape.global_position if collision_shape != null else anchor.global_position
+
+func is_interaction_active() -> bool:
+	if _host == null:
+		return false
+	if _host.has_method("is_interaction_active"):
+		return bool(_host.call("is_interaction_active", self))
+	return true
+
+func _create_default_action() -> InteractionAction:
+	if _host == null or activation_method.is_empty() or interaction_id.strip_edges().is_empty() or interaction_title.strip_edges().is_empty():
+		return null
+	if not _host.has_method(activation_method):
+		push_warning("InteractableComponent: %s 不存在方法 %s" % [_host.get_path(), activation_method])
+		return null
+	return InteractionAction.create(interaction_id, interaction_title, interaction_priority, Callable(_host, activation_method))
+
+func _resolve_anchor() -> Node2D:
+	if _host == null:
+		return null
+	if not anchor_path.is_empty():
+		var explicit_anchor: Node2D = _host.get_node_or_null(anchor_path) as Node2D
+		if explicit_anchor != null:
+			return explicit_anchor
+	return _host
+
+func _first_enabled_collision_shape(anchor: Node2D) -> CollisionShape2D:
+	var direct_shape: CollisionShape2D = anchor as CollisionShape2D
+	if direct_shape != null and not direct_shape.disabled and direct_shape.shape != null:
+		return direct_shape
+	for child: Node in anchor.get_children():
+		var collision_shape: CollisionShape2D = child as CollisionShape2D
+		if collision_shape != null and not collision_shape.disabled and collision_shape.shape != null:
+			return collision_shape
+	return null

_Core/interactions/InteractableComponent.gd.uid

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+uid://cn3fccr0qc41h

_Core/interactions/InteractionAction.gd

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+class_name InteractionAction
+extends RefCounted
+
+# 交互管理器使用的强类型动作数据，避免各交互物品以 Dictionary 约定字段。
+var id: String = ""
+var title: String = ""
+var priority: int = 100
+var distance: float = INF
+var activate: Callable = Callable()
+
+static func create(action_id: String, action_title: String, action_priority: int, callback: Callable) -> InteractionAction:
+	var action: InteractionAction = InteractionAction.new()
+	action.id = action_id
+	action.title = action_title
+	action.priority = action_priority
+	action.activate = callback
+	return action
+
+func is_valid() -> bool:
+	return not id.strip_edges().is_empty() and not title.strip_edges().is_empty() and activate.is_valid()

_Core/interactions/InteractionAction.gd.uid

@@ -0,0 +1 @@
+uid://dbrui8h3sbjrn