Add manual extractor resource transfers

BuildController.gd

@@ -159,9 +159,12 @@ var craft_message_until: int = 0
 # current_building while any menu is open, so by the next frame the panel
 # would not know which building it belongs to.
 var transfer_building_id: int = 0
+var transfer_extractor_index: int = -1
 
 var current_building: Node2D = null
 var pending_building: Node2D = null
+var current_extractor_index: int = -1
+var pending_extractor_index: int = -1
 var pending_time: float = 0.0
 var context_actions_expanded: bool = false
 
@@ -304,6 +307,8 @@ func _process(delta: float) -> void:
 			or transfer_menu.visible or hangar_menu.visible:
 		current_building = null
 		pending_building = null
+		current_extractor_index = -1
+		pending_extractor_index = -1
 		action_button.visible = false
 		building_action_button.visible = false
 		transfer_button.visible = false
@@ -314,17 +319,25 @@ func _process(delta: float) -> void:
 	# Debounced exactly like the enter-atmosphere prompt, so the action
 	# button can't flicker while the fleet drifts on the interact boundary.
 	var detected: Node2D = building_field.get_building_fleet_is_on()
+	var detected_extractor: int = -1
+	if detected == null:
+		var planet: Node2D = _planet_under_fleet()
+		if planet != null:
+			detected_extractor = GameState.extractor_index_at(planet.planet_id)
 
-	if detected != pending_building:
+	if detected != pending_building or detected_extractor != pending_extractor_index:
 		pending_building = detected
+		pending_extractor_index = detected_extractor
 		pending_time = 0.0
 	else:
 		pending_time += delta
 
-	if pending_time < prompt_debounce_time or pending_building == current_building:
+	if pending_time < prompt_debounce_time or (pending_building == current_building \
+			and pending_extractor_index == current_extractor_index):
 		return
 
 	current_building = pending_building
+	current_extractor_index = pending_extractor_index
 	context_actions_expanded = false
 	hangar_button.visible = false
 	# Every building can hold ore, so the transfer button rides alongside the
@@ -332,13 +345,16 @@ func _process(delta: float) -> void:
 	# turns into - the two are independent choices at the same structure.
 	transfer_button.visible = false
 	building_action_button.visible = false
-	action_button.visible = current_building != null
+	action_button.visible = current_building != null or current_extractor_index >= 0
 	if current_building != null:
 		var actions: Array = _context_action_buttons()
 		building_action_button.icon = int(current_building.definition.action_icon)
 		building_action_button.queue_redraw()
 		action_button.icon = building_action_button.icon if actions.size() == 1 else IconButton.Icon.ACTION_MENU
 		action_button.queue_redraw()
+	elif current_extractor_index >= 0:
+		action_button.icon = IconButton.Icon.TRANSFER
+		action_button.queue_redraw()
 	_layout_context_buttons()
 
 
@@ -365,6 +381,8 @@ func _layout_context_buttons() -> void:
 
 
 func _context_action_buttons() -> Array:
+	if current_extractor_index >= 0:
+		return [transfer_button]
 	if current_building == null:
 		return []
 	var buttons: Array = []
@@ -384,7 +402,7 @@ func _button_for_building_action(action: String) -> IconButton:
 
 
 func _on_context_action_pressed() -> void:
-	if current_building == null:
+	if current_building == null and current_extractor_index < 0:
 		return
 	var actions: Array = _context_action_buttons()
 	if actions.size() == 1:
@@ -877,9 +895,10 @@ const ALL: int = 1 << 30
 
 
 func _on_transfer_pressed() -> void:
-	if current_building == null:
+	if current_building == null and current_extractor_index < 0:
 		return
-	transfer_building_id = current_building.building_id
+	transfer_building_id = current_building.building_id if current_building != null else 0
+	transfer_extractor_index = current_extractor_index
 	for bar in resource_bars:
 		bar.building_id = transfer_building_id
 	transfer_menu.visible = true
@@ -892,15 +911,17 @@ func _on_transfer(to_building: bool, amount: int) -> void:
 
 
 func _on_resource_transfer(resource_type: String, to_building: bool, amount: int = ALL) -> void:
-	if transfer_building_id == 0:
-		transfer_status.text = "No building selected - reopen this panel from the building"
+	if transfer_building_id == 0 and transfer_extractor_index < 0:
+		transfer_status.text = "No resource store selected - reopen this panel from its action"
 		return
 
-	var moved: int = GameState.transfer_resource_to_building(
-		transfer_building_id, resource_type, amount
-	) if to_building else GameState.transfer_resource_to_fleet(
-		transfer_building_id, resource_type, amount
-	)
+	var moved: int
+	if transfer_extractor_index >= 0:
+		moved = GameState.transfer_resource_to_extractor(transfer_extractor_index, resource_type, amount) \
+			if to_building else GameState.transfer_resource_from_extractor(transfer_extractor_index, resource_type, amount)
+	else:
+		moved = GameState.transfer_resource_to_building(transfer_building_id, resource_type, amount) \
+			if to_building else GameState.transfer_resource_to_fleet(transfer_building_id, resource_type, amount)
 	var resource_name: String = GameState.resource_name(resource_type).to_lower()
 
 	# Nothing moving is the common case at an empty end, and a silent no-op
@@ -922,6 +943,8 @@ func _on_gas_transfer(to_building: bool) -> void:
 
 
 func _transfer_place_name() -> String:
+	if transfer_extractor_index >= 0:
+		return "the extractor"
 	var b: Dictionary = GameState.find_building(transfer_building_id)
 	if b.is_empty():
 		return "this building"
@@ -933,6 +956,9 @@ func _transfer_place_name() -> String:
 
 
 func _refresh_transfer() -> void:
+	if transfer_extractor_index >= 0:
+		transfer_list.set_extractor_destination(transfer_extractor_index, "Planet extractor")
+		return
 	var building: Dictionary = GameState.find_building(transfer_building_id)
 	var heading: String = "This building"
 	if not building.is_empty() and building.type == GameState.BUILDING_MOTHERSHIP: