Initial commit: SpaceshipTest, a top-down space RTS in Godot 4.7.1

A fleet of neon-outlined ships explores a procedurally generated, seeded
infinite world: tap/joystick steering, pinch zoom, formation pivoting,
planet landings, an ore economy with extractors and haulers, and player
built structures (mothership, ship crafter, command centre).

All art is hand-drawn with draw_* calls rather than textures, and the
backgrounds are camera-relative shaders so they stay precise at large
world coordinates.

Includes a 35-test headless suite (tests/run_tests.sh) plus screenshot
tooling that renders real frames through Xvfb and Mesa softpipe, since
--headless has no GPU.

Excluded from version control: .godot/ (import cache, and it holds
export credentials), builds/, android/build/ and packaged APKs - all
regenerable, and ~325 MB combined.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Asteroid.gd

@@ -0,0 +1,40 @@
+extends Area2D
+
+var velocity: Vector2 = Vector2.ZERO
+var rotation_speed: float = 0.0
+
+var shape_points: PackedVector2Array = PackedVector2Array()
+
+
+func _ready() -> void:
+	randomize()
+	add_to_group("asteroids")
+	area_entered.connect(_on_area_entered)
+
+	var point_count: int = 7
+	for i in range(point_count):
+		var angle: float = (float(i) / point_count) * TAU
+		var radius: float = randf_range(14.0, 22.0)
+		shape_points.append(Vector2(cos(angle), sin(angle)) * radius)
+	queue_redraw()
+
+
+func _process(delta: float) -> void:
+	# Deliberately no queue_redraw() here. position and rotation are node
+	# TRANSFORM properties - Godot applies them when rendering, and the
+	# polygon built in _ready() is in local space, so it never changes.
+	# Redrawing each frame re-tessellated four antialiased polylines per
+	# asteroid for an identical result; with ~150 asteroids on screen that
+	# was the single largest source of stutter.
+	position += velocity * delta
+	rotation += rotation_speed * delta
+
+
+func _on_area_entered(area: Area2D) -> void:
+	if area.is_in_group("player_ships"):
+		AsteroidExplosionVFX.spawn(get_tree().root, position)
+		queue_free()
+
+
+func _draw() -> void:
+	NeonDraw.draw_glowing_polygon(self, shape_points, Color(0.65, 0.5, 0.35), 1.0)