Refactor multi-resource UI and transfers

ResourceGlyph.gd

@@ -0,0 +1,54 @@
+class_name ResourceGlyph
+extends Control
+
+# A small, non-interactive resource mark shared by tables and transfer rows.
+# Resource buttons used to borrow IconButton, which made decorative icons
+# look tappable and encouraged each screen to invent its own version.
+
+@export var resource_type: String = GameState.RESOURCE_ORE: set = set_resource_type
+
+
+func set_resource_type(value: String) -> void:
+	if resource_type == value:
+		return
+	resource_type = value
+	queue_redraw()
+
+
+func _ready() -> void:
+	mouse_filter = Control.MOUSE_FILTER_IGNORE
+	queue_redraw()
+
+
+func _draw() -> void:
+	var colour: Color = GameState.resource_color(resource_type)
+	var centre: Vector2 = size * 0.5
+	var radius: float = minf(size.x, size.y) * 0.34
+	match resource_type:
+		GameState.RESOURCE_GAS:
+			_draw_gas(centre, radius, colour)
+		_:
+			_draw_ore(centre, radius, colour)
+
+
+func _draw_ore(centre: Vector2, radius: float, colour: Color) -> void:
+	var points := PackedVector2Array()
+	for i in range(6):
+		var angle: float = TAU * float(i) / 6.0 - PI * 0.5
+		points.append(centre + Vector2(cos(angle), sin(angle)) * radius)
+	NeonDraw.draw_glowing_polygon(self, points, colour, 1.0, colour.darkened(0.78), maxf(0.5, radius * 0.035))
+	NeonDraw.draw_glowing_line(self, points[5], points[2], colour, 0.55, maxf(0.4, radius * 0.025), colour.darkened(0.78))
+
+
+func _draw_gas(centre: Vector2, radius: float, colour: Color) -> void:
+	var bubbles: Array = [
+		[centre + Vector2(-radius * 0.38, radius * 0.12), radius * 0.46],
+		[centre + Vector2(radius * 0.34, radius * 0.26), radius * 0.58],
+		[centre + Vector2(radius * 0.38, -radius * 0.48), radius * 0.32],
+	]
+	for bubble in bubbles:
+		var ring := PackedVector2Array()
+		for i in range(12):
+			var angle: float = TAU * float(i) / 12.0
+			ring.append(bubble[0] + Vector2(cos(angle), sin(angle)) * float(bubble[1]))
+		NeonDraw.draw_glowing_polygon(self, ring, colour, 1.0, colour.darkened(0.78), maxf(0.5, radius * 0.035))