From 567c422f8cd42eba2437f9a8c2522716a1649be7 Mon Sep 17 00:00:00 2001
From: hazel <hazel@hazelthats.me>
Date: Mon, 26 Jan 2026 22:04:39 +0100
Subject: celesteia archive, last updated april 9th 2024

Signed-off-by: hazel <hazel@hazelthats.me>
---
 .../systems/mainmenu/MainMenuBackgroundSystem.cs   | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 source/game/systems/mainmenu/MainMenuBackgroundSystem.cs

(limited to 'source/game/systems/mainmenu/MainMenuBackgroundSystem.cs')

diff --git a/source/game/systems/mainmenu/MainMenuBackgroundSystem.cs b/source/game/systems/mainmenu/MainMenuBackgroundSystem.cs
new file mode 100644
index 0000000..e4d5e28
--- /dev/null
+++ b/source/game/systems/mainmenu/MainMenuBackgroundSystem.cs
@@ -0,0 +1,33 @@
+using Celesteia.Game.Components.Skybox;
+using Microsoft.Xna.Framework;
+using MonoGame.Extended;
+using MonoGame.Extended.Entities;
+using MonoGame.Extended.Entities.Systems;
+
+namespace Celesteia.Game.Systems.MainMenu {
+    public class MainMenuBackgroundSystem : EntityUpdateSystem
+    {
+        private ComponentMapper<Transform2> transformMapper;
+        private ComponentMapper<SkyboxRotateZ> rotatorMapper;
+
+        public MainMenuBackgroundSystem() : base(Aspect.All(typeof(Transform2), typeof(SkyboxRotateZ))) {}
+
+        public override void Initialize(IComponentMapperService mapperService)
+        {
+            transformMapper = mapperService.GetMapper<Transform2>();
+            rotatorMapper = mapperService.GetMapper<SkyboxRotateZ>();
+        }
+
+        public override void Update(GameTime gameTime)
+        {
+            foreach (int entityId in ActiveEntities) {
+                SkyboxRotateZ rotator = rotatorMapper.Get(entityId);
+                Transform2 transform = transformMapper.Get(entityId);
+
+                rotator.Current += rotator.Magnitude * (gameTime.GetElapsedSeconds() / 1000f) * 20f;
+
+                transform.Rotation = rotator.Current;
+            }
+        }
+    }
+}
\ No newline at end of file
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