Use gas glyph in HUD counter

GasCounter.gd

@@ -14,3 +14,22 @@ func _ready() -> void:
 
 func _process(_delta: float) -> void:
 	set_amount(GameState.gas)
+
+
+func _draw() -> void:
+	# Gas keeps the segmented count used by ore, but replaces ore's mining
+	# hex with the three-bubble resource glyph. The label above it now names
+	# the same icon rather than describing a pink recolour of ore.
+	var h: float = digit_height
+	var s: float = h / 60.0
+	for bubble in [[Vector2(21, 36), 13.0], [Vector2(35, 42), 17.0], [Vector2(39, 23), 9.0]]:
+		var ring := PackedVector2Array()
+		for i in range(12):
+			var angle := TAU * float(i) / 12.0
+			ring.append((bubble[0] + Vector2(cos(angle), sin(angle)) * bubble[1]) * s)
+		NeonDraw.draw_glowing_polygon(self, ring, GAS_GLOW, 1.0, GAS_CORE, 0.55 * s)
+	var x: float = h * 1.10
+	var w: float = h * 0.56
+	for digit in str(maxi(amount, 0)):
+		_draw_digit(int(digit), Vector2(x, 0.0), w, h)
+		x += w + digit_gap

Main.tscn

@@ -114,16 +114,6 @@ offset_bottom = 92
 script = ExtResource("25")
 digit_height = 60.0
 
-[node name="GasIcon" type="Control" parent="UI"]
-mouse_filter = 2
-offset_left = 476
-offset_top = 32
-offset_right = 524
-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 = 294