Add research lab planets and research points (#63)

ResearchLabPlanetVisual.gd

@@ -0,0 +1,55 @@
+extends Node2D
+
+# Same informal interface as GasGiantVisual/RockyPlanetVisual - configure(),
+# extractor_anchor(), animates via its own _process(). Deliberately angular
+# and armoured rather than a natural silhouette (#63: this is an ENEMY
+# installation, not a celestial body), with a rotating dish and blinking
+# warning lights to read as occupied/hostile at a glance.
+
+var phase: float = 0.0
+
+const RADIUS: float = 108.0
+const HULL_COLOR: Color = Color(0.55, 0.1, 0.08)
+const CORE_COLOR: Color = Color(0.9, 0.25, 0.18)
+const WARNING_COLOR: Color = Color(1.0, 0.2, 0.15)
+const DARK_CORE: Color = Color(0.14, 0.02, 0.02)
+
+
+func configure(_shape_seed: int) -> void:
+	queue_redraw()
+
+
+func extractor_anchor() -> Vector2:
+	return Vector2(0.0, -(RADIUS + 40.0))
+
+
+func _process(delta: float) -> void:
+	phase += delta
+	queue_redraw()
+
+
+func _draw() -> void:
+	var hull: PackedVector2Array = PackedVector2Array()
+	for i in range(6):
+		var angle: float = TAU * float(i) / 6.0
+		hull.append(Vector2(cos(angle), sin(angle)) * RADIUS)
+	NeonDraw.draw_glowing_polygon(self, hull, HULL_COLOR, 0.85, DARK_CORE)
+
+	var inner: PackedVector2Array = PackedVector2Array()
+	for i in range(6):
+		var angle: float = TAU * float(i) / 6.0 + PI / 6.0
+		inner.append(Vector2(cos(angle), sin(angle)) * RADIUS * 0.55)
+	NeonDraw.draw_glowing_polygon(self, inner, CORE_COLOR, 0.9, DARK_CORE)
+
+	# A slow-rotating dish - reads as actively transmitting, not derelict.
+	var dish_angle: float = phase * 0.6
+	var dish_tip: Vector2 = Vector2(cos(dish_angle), sin(dish_angle)) * RADIUS * 1.35
+	NeonDraw.draw_glowing_line(self, Vector2.ZERO, dish_tip, CORE_COLOR, 0.8, 0.55, DARK_CORE)
+	NeonDraw.draw_glowing_circle(self, dish_tip, 11.0, CORE_COLOR, 1.0, DARK_CORE)
+
+	# Blinking hull-corner warning lights.
+	var blink: float = 0.4 + 0.6 * absf(sin(phase * 4.0))
+	for i in range(6):
+		var angle: float = TAU * float(i) / 6.0
+		var at: Vector2 = Vector2(cos(angle), sin(angle)) * RADIUS
+		NeonDraw.draw_glowing_circle(self, at, 5.0, WARNING_COLOR, blink, DARK_CORE)