Show gas icons in resource displays

Main.tscn

@@ -114,6 +114,16 @@ offset_bottom = 92
 script = ExtResource("25")
 digit_height = 60.0
 
+[node name="GasIcon" type="Control" parent="UI"]
+mouse_filter = 2
+offset_left = 640
+offset_top = 24
+offset_right = 696
+offset_bottom = 80
+script = ExtResource("10")
+icon = 25
+glow_color = Color(0.85, 0.52, 1, 1)
+
 [node name="GasCaption" type="Label" parent="UI"]
 mouse_filter = 2
 offset_left = 336

ResourceBar.gd

@@ -42,6 +42,7 @@ const RULE_COLOR: Color = Color(0.25, 0.55, 0.7)
 var _numbers: Array[NeonNumber] = []
 var _captions: Array[Label] = []
 var _gas_caption: Label
+var _gas_icon: IconButton
 
 
 func _ready() -> void:
@@ -75,6 +76,11 @@ func _ready() -> void:
 	_gas_caption.add_theme_font_size_override("font_size", 20)
 	_gas_caption.add_theme_color_override("font_color", Color(0.85, 0.52, 1.0))
 	add_child(_gas_caption)
+	_gas_icon = IconButton.new()
+	_gas_icon.mouse_filter = Control.MOUSE_FILTER_IGNORE
+	_gas_icon.icon = IconButton.Icon.GAS
+	_gas_icon.glow_color = Color(0.85, 0.52, 1.0)
+	add_child(_gas_icon)
 
 
 func _layout() -> void:
@@ -90,6 +96,10 @@ func _layout() -> void:
 		_gas_caption.position = Vector2(size.x - 110.0, 2.0)
 		_gas_caption.size = Vector2(106.0, CAPTION_HEIGHT)
 		_gas_caption.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
+	if _gas_icon != null:
+		_gas_icon.position = Vector2(size.x - 34.0, 0.0)
+		_gas_icon.size = Vector2(32.0, 32.0)
+		_gas_caption.size.x = maxf(0.0, _gas_caption.size.x - 36.0)
 
 
 func _process(_delta: float) -> void:

tests/_lab_menu_preview.gd

@@ -12,6 +12,7 @@ func _ready() -> void:
 	GameState.transporters.clear()
 	GameState.reset_progression()
 	GameState.rocks = 240
+	GameState.gas = 36
 	GameState.unlocked = ["shipyards", "vessel_science"]
 	var main: Node = load("res://Main.tscn").instantiate()
 	add_child(main)
@@ -19,6 +20,7 @@ func _ready() -> void:
 	var lab_id: int = int(GameState.buildings[-1].id)
 	GameState.deposit_to_building(lab_id, 18)
 	GameState.fleet_cargo = 12
+	GameState.fleet_gas_cargo = 8
 	# A level already bought, so the list shows both a researched and an
 	# unresearched line rather than a uniform page of zeroes.
 	GameState.vessel_levels["int_damage"] = 1

tests/_transfer_menu_preview.gd

@@ -13,13 +13,16 @@ func _ready() -> void:
 	GameState.extractors.clear()
 	GameState.transporters.clear()
 	GameState.rocks = 180
+	GameState.gas = 36
 	GameState.fleet_cargo = 24
+	GameState.fleet_gas_cargo = 12
 	GameState.unlocked = ["shipyards", "logistics", "freight"]
 	var main: Node = load("res://Main.tscn").instantiate()
 	add_child(main)
 	main.get_node("BuildingField").place(GameState.BUILDING_SHIP_CRAFTER, Vector2(400.0, 0.0))
 	var crafter_id: int = int(GameState.buildings[-1].id)
 	GameState.deposit_to_building(crafter_id, 42)
+	GameState.find_building(crafter_id).gas_stock = 18
 	var bc: Node = main.get_node("BuildController")
 	bc.transfer_building_id = crafter_id
 	main.get_node("UI/TransferMenu").visible = true