Collapse contextual building actions

BuildController.gd

@@ -19,6 +19,7 @@ extends Node2D
 @onready var world_map: Control = get_node("../UI/WorldMap")
 @onready var build_button: IconButton = get_node("../UI/BuildButton")
 @onready var action_button: IconButton = get_node("../UI/BuildActionButton")
+@onready var building_action_button: IconButton = get_node("../UI/BuildingActionButton")
 
 @onready var build_menu: Control = get_node("../UI/BuildMenu")
 @onready var build_mothership_button: IconButton = get_node("../UI/BuildMenu/MothershipButton")
@@ -209,6 +210,7 @@ var transfer_building_id: int = 0
 var current_building: Node2D = null
 var pending_building: Node2D = null
 var pending_time: float = 0.0
+var context_actions_expanded: bool = false
 
 
 func _ready() -> void:
@@ -230,7 +232,8 @@ func _ready() -> void:
 	info_close_button.pressed.connect(_close_info)
 	info_build_button.pressed.connect(_confirm_build)
 
-	action_button.pressed.connect(_on_action_pressed)
+	action_button.pressed.connect(_on_context_action_pressed)
+	building_action_button.pressed.connect(_on_action_pressed)
 
 	craft_interceptor_button.pressed.connect(_on_craft_interceptor)
 	craft_transporter_button.pressed.connect(_on_craft_transporter)
@@ -266,6 +269,7 @@ func _ready() -> void:
 	lab_menu.visible = false
 	transfer_menu.visible = false
 	action_button.visible = false
+	building_action_button.visible = false
 	transfer_button.visible = false
 	hangar_button.visible = false
 	hangar_menu.visible = false
@@ -281,6 +285,12 @@ func is_showing_building_prompt() -> bool:
 
 
 func _unhandled_input(event: InputEvent) -> void:
+	if context_actions_expanded and (event is InputEventScreenTouch and event.pressed \
+			or event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT):
+		# Buttons consume their own touch; reaching this handler means the tap
+		# landed somewhere else, which dismisses an expanded action list.
+		_collapse_context_actions()
+
 	# The formation editor and the skill tree are driven from here rather than
 	# via _gui_input, for the same reason as the joystick: a Control that
 	# consumes touches through the GUI system swallows them before they get
@@ -337,8 +347,10 @@ func _process(delta: float) -> void:
 		current_building = null
 		pending_building = null
 		action_button.visible = false
+		building_action_button.visible = false
 		transfer_button.visible = false
 		hangar_button.visible = false
+		context_actions_expanded = false
 		return
 
 	# Debounced exactly like the enter-atmosphere prompt, so the action
@@ -355,7 +367,7 @@ func _process(delta: float) -> void:
 		return
 
 	current_building = pending_building
-	action_button.visible = current_building != null
+	context_actions_expanded = false
 	# The hangar is where finished vessels are delivered (#23), so it belongs
 	# at the mothership and nowhere else.
 	hangar_button.visible = current_building != null \
@@ -363,26 +375,68 @@ func _process(delta: float) -> void:
 	# Every building can hold ore, so the transfer button rides alongside the
 	# action button rather than being one of the things the action button
 	# turns into - the two are independent choices at the same structure.
-	transfer_button.visible = current_building != null
+	transfer_button.visible = false
+	building_action_button.visible = false
+	action_button.visible = current_building != null
 	if current_building != null:
-		action_button.icon = _action_icon_for(current_building.building_type)
+		var actions: Array = _context_action_buttons()
+		building_action_button.icon = _action_icon_for(current_building.building_type)
+		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()
 	_layout_context_buttons()
 
 
 func _layout_context_buttons() -> void:
-	# Every contextual action uses a distinct, fixed berth above Build. This
-	# replaces the old hand-picked offsets where Hangar overlapped Action at a
-	# mothership (#25).
-	var buttons: Array = [action_button, transfer_button]
-	if hangar_button.visible:
-		buttons.append(hangar_button)
+	# Build is permanently under the resource counter. The contextual berth
+	# directly below it is compact until it has more than one real choice.
+	action_button.offset_top = 324
+	action_button.offset_bottom = 472
+	var buttons: Array = _context_action_buttons()
+	if not context_actions_expanded:
+		for button in buttons:
+			button.visible = false
+		return
 	for i in range(buttons.size()):
 		var button: Control = buttons[i]
-		button.offset_top = -720 + i * 164
+		button.visible = true
+		button.offset_top = 488 + i * 164
 		button.offset_bottom = button.offset_top + 148
 
 
+func _context_action_buttons() -> Array:
+	if current_building == null:
+		return []
+	var actions: Array = [transfer_button]
+	if current_building.building_type in [GameState.BUILDING_MOTHERSHIP, GameState.BUILDING_SHIP_CRAFTER,
+			GameState.BUILDING_SHIP_LAB, GameState.BUILDING_COMMAND_CENTER]:
+		actions.push_front(building_action_button)
+	if current_building.building_type == GameState.BUILDING_MOTHERSHIP:
+		actions.append(hangar_button)
+	return actions
+
+
+func _on_context_action_pressed() -> void:
+	if current_building == null:
+		return
+	var actions: Array = _context_action_buttons()
+	if actions.size() == 1:
+		if actions[0] == transfer_button:
+			_on_transfer_pressed()
+		else:
+			_on_action_pressed()
+		return
+	context_actions_expanded = not context_actions_expanded
+	_layout_context_buttons()
+
+
+func _collapse_context_actions() -> void:
+	if not context_actions_expanded:
+		return
+	context_actions_expanded = false
+	_layout_context_buttons()
+
+
 func _action_icon_for(type: String) -> int:
 	match type:
 		GameState.BUILDING_SHIP_CRAFTER: