Added Glitch Room Source code to Gitty

tests/robotron/render_preview.gd

@@ -0,0 +1,29 @@
+extends SceneTree
+func _initialize() -> void:
+	call_deferred("run")
+func run() -> void:
+	root.size=Vector2i(960,720)
+	root.content_scale_size=Vector2i(960,720)
+	var g=load("res://games/robotron/Robotron.tscn").instantiate()
+	root.add_child(g)
+	g.set_physics_process(false)
+	g.sound_enabled=false
+	for state in ["title","play","brain","roster"]:
+		g.phase_time=3
+		g.phase=state
+		if state=="play":
+			g.wave=3
+			g.setup_wave()
+			g.invulnerable=0
+		if state=="brain":
+			g.wave=5
+			g.setup_wave()
+			g.phase="play"
+			g.invulnerable=0
+		g.board.queue_redraw()
+		await process_frame
+		await process_frame
+		await RenderingServer.frame_post_draw
+		root.get_texture().get_image().save_png("res://tests/robotron/"+state+".png")
+	g.free()
+	quit()