From 1301a1c632d8a2e275278932dc933e25041de85d Mon Sep 17 00:00:00 2001
From: Justin Oros <JustinOros@gmail.com>
Date: Fri, 25 Sep 2026 19:34:35 -0700
Subject: [PATCH] Add rear lights that turn on while reversing

---
 BackupCam.cs | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 README.md    | 16 ++++++++++------
 2 files changed, 55 insertions(+), 8 deletions(-)

diff --git a/BackupCam.cs b/BackupCam.cs
index b215d5b..3a69e07 100644
--- a/BackupCam.cs
+++ b/BackupCam.cs
@@ -20,6 +20,8 @@ public class BackupCam : SonsMod
     const float SearchRadius = 2.5f;
     const string ScreenPath = "GolfCartScreen/GolfCartGps/Canvas/ScreenMask";
     const string ScreenImageName = "BackupCamScreen";
+    const string HeadLightPath = "LightsGroup/HeadLights";
+    const string RearLightName = "BackupCamRearLight";
 
     static readonly string[] TextureProps =
     {
@@ -35,6 +37,7 @@ public class BackupCam : SonsMod
     GameObject _canvasGo;
     RawImage _image;
     GameObject _screenGo;
+    GameObject _rearLightGo;
     float _screenAspect;
     float _searchTimer;
     float _lastReverse = -10f;
@@ -52,7 +55,7 @@ public class BackupCam : SonsMod
 
     protected override void OnSdkInitialized()
     {
-        RLog.Msg("BackupCam 1.1.1 loaded. Reverse the golf cart to show the camera on its GPS screen. Console: backupcamoffset, backupcamdump");
+        RLog.Msg("BackupCam 1.2.0 loaded. Reverse the golf cart to show the camera on its GPS screen and turn on rear lights. Console: backupcamoffset, backupcamdump");
     }
 
     protected override void OnGameStart()
@@ -117,6 +120,7 @@ public class BackupCam : SonsMod
         _cart = null;
         _body = null;
         _screenGo = null;
+        _rearLightGo = null;
 
         var player = LocalPlayer.Transform;
         var root = player.root;
@@ -143,6 +147,7 @@ public class BackupCam : SonsMod
         _body = body;
         AttachCamera();
         AttachScreen();
+        AttachRearLight();
         return true;
     }
 
@@ -213,6 +218,43 @@ public class BackupCam : SonsMod
         _screenAspect = maskRect.height > 0f ? maskRect.width / maskRect.height : 0f;
     }
 
+    void AttachRearLight()
+    {
+        var root = _cart.transform.root;
+        var existing = root.Find(RearLightName);
+        if (existing != null)
+        {
+            _rearLightGo = existing.gameObject;
+            _rearLightGo.SetActive(false);
+            return;
+        }
+
+        var head = root.Find(HeadLightPath);
+        if (head == null)
+        {
+            RLog.Msg("BackupCam: headlights not found on this cart, no rear lights");
+            return;
+        }
+
+        var go = Object.Instantiate(head.gameObject, root);
+        go.name = RearLightName;
+        go.SetActive(false);
+
+        foreach (var c in go.GetComponents<Component>())
+            if (c != null && c.GetIl2CppType().Name == "UL_FastGI")
+                Object.Destroy(c);
+
+        var localPos = root.InverseTransformPoint(head.position);
+        var localRot = Quaternion.Inverse(root.rotation) * head.rotation;
+        go.transform.localPosition = new Vector3(localPos.x, localPos.y, -localPos.z);
+        go.transform.localRotation = Quaternion.AngleAxis(180f, Vector3.up) * localRot;
+
+        var light = go.GetComponent<Light>();
+        if (light != null) light.enabled = true;
+
+        _rearLightGo = go;
+    }
+
     void ApplyOffset()
     {
         if (_cam == null) return;
@@ -228,6 +270,7 @@ public class BackupCam : SonsMod
         var onScreen = _screenGo != null;
         if (_screenGo != null) _screenGo.SetActive(show);
         if (_canvasGo != null) _canvasGo.SetActive(show && !onScreen);
+        if (_rearLightGo != null) _rearLightGo.SetActive(show);
 
         if (_cam == null) return;
         if (onScreen && _screenAspect > 0f) _cam.aspect = _screenAspect;
@@ -379,4 +422,4 @@ public class BackupCam : SonsMod
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/README.md b/README.md
index 81fe2ab..0c7fdf3 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # BackupCam
 
-Shows a backup camera on screen while you reverse the golf cart in Sons of the
-Forest.
+Shows a backup camera on the golf cart's GPS screen and turns on rear lights
+while you reverse in Sons of the Forest.
 
 ## Multiplayer
 
@@ -53,9 +53,13 @@ Mods\BackupCam\manifest.json
 
 ## Usage
 
-Get in a golf cart and drive backward. The camera feed appears at the bottom of
-the screen, mirrored like a real backup camera, and hides shortly after you stop
-reversing.
+Get in a golf cart and drive backward. The camera feed replaces the map on the
+cart's GPS screen, mirrored like a real backup camera, and the map comes back
+shortly after you stop reversing. Rear lights also turn on while reversing so
+the camera can see at night. If a cart has no GPS screen, the feed is shown at
+the bottom of your screen instead.
+
+The rear lights and camera are only visible to players who have the mod.
 
 Press F1 to open the console, then use these commands:
 
@@ -63,7 +67,7 @@ Press F1 to open the console, then use these commands:
 | --- | --- |
 | `backupcamoffset` | Show the current camera height, distance and tilt |
 | `backupcamoffset 1.1 -1.3 20` | Set camera height, distance behind the cart, and downward tilt |
-| `backupcamdump` | Write the golf cart's object and material list to `_RedLoader\Latest.log` |
+| `backupcamdump` | Write the golf cart's objects, components and textures to `UserData\BackupCamDump.txt` |
 
 ## Uninstall