From b78110338eed0cf59d21fc3ea9448ba427f58ca5 Mon Sep 17 00:00:00 2001
From: Caner Karaca <canerkaraca_23@hotmail.com>
Date: Tue, 25 Aug 2026 14:35:16 +0300
Subject: [PATCH] feat(lights): provide dynamic material color for low/high
 beams via RegisterMaterialColProvider

---
 src/features/lights.cpp         | 17 +++++++++++++++++
 src/features/lights/manager.cpp | 12 ++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/src/features/lights.cpp b/src/features/lights.cpp
index e98a41a4..522031be 100755
--- a/src/features/lights.cpp
+++ b/src/features/lights.cpp
@@ -114,6 +114,23 @@ void Lights::Init()
 		}
 	};
 
+	ModelInfoMgr::RegisterMaterialColProvider([](CVehicle *pVeh, RpMaterial *pMat, eMaterialType type) -> MatStateColor
+	{
+		if (type == eMaterialType::HeadLightLeft || type == eMaterialType::HeadLightRight)
+		{
+			bool longLights = pVeh && m_VehData.Get(pVeh).m_bLongLightsOn;
+			if (longLights)
+			{
+				return { CRGBA(255, 255, 255, 255), DEFAULT_MAT_COL };
+			}
+			else
+			{
+				return { CRGBA(190, 190, 190, 255), DEFAULT_MAT_COL };
+			}
+		}
+		return { DEFAULT_MAT_COL, DEFAULT_MAT_COL };
+	});
+
 	ModelInfoMgr::RegisterMaterial([](CVehicle *pVeh, RpMaterial *pMat)
 								   {
 		if (!m_bEnabled) {
diff --git a/src/features/lights/manager.cpp b/src/features/lights/manager.cpp
index 00e271cf..4f161314 100644
--- a/src/features/lights/manager.cpp
+++ b/src/features/lights/manager.cpp
@@ -34,6 +34,18 @@ void LightManager::Init() {
     m_Components.push_back(std::make_unique<AllDayLightComponent>());
     m_Components.push_back(std::make_unique<SideLightComponent>());
     m_Components.push_back(std::make_unique<SpotLightComponent>());
+
+    ModelInfoMgr::RegisterMaterialColProvider([](CVehicle* pVeh, RpMaterial* pMat, eMaterialType type) -> MatStateColor {
+        if (type == eMaterialType::HeadLightLeft || type == eMaterialType::HeadLightRight) {
+            bool longLights = pVeh && m_VehData.Get(pVeh).bLongLightsOn;
+            if (longLights) {
+                return { CRGBA(255, 255, 255, 255), DEFAULT_MAT_COL };
+            } else {
+                return { CRGBA(190, 190, 190, 255), DEFAULT_MAT_COL };
+            }
+        }
+        return { DEFAULT_MAT_COL, DEFAULT_MAT_COL };
+    });
 }
 
 DummyConfig LightManager::CreateBaseConfig(CVehicle* pVeh, RwFrame* pFrame) {