From 11a677c349b149b2f77184dc903e6bb17f8df69b Mon Sep 17 00:00:00 2001
From: Voids29 <99505279+Voids29@users.noreply.github.com>
Date: Thu, 15 Jan 2026 20:16:01 -0500
Subject: [PATCH] Added .vmt configurable horizontal texture scrolling to
 BuildingRescueLevel material proxy

---
 src/game/client/tf/c_tf_player.cpp | 39 +++++++++++++++++++++++++++---
 1 file changed, 36 insertions(+), 3 deletions(-)

diff --git a/src/game/client/tf/c_tf_player.cpp b/src/game/client/tf/c_tf_player.cpp
index ca482d17d..0873ffe25 100644
--- a/src/game/client/tf/c_tf_player.cpp
+++ b/src/game/client/tf/c_tf_player.cpp
@@ -76,6 +76,9 @@
 #include "netadr.h"
 #include "input.h"
 
+// for rescue ranger
+#include "materialsystem/imaterialproxy.h"
+
 #include "gcsdk/gcclientsdk.h"
 #include "econ_gcmessages.h"
 #include "rtime.h"
@@ -2289,12 +2292,31 @@ public:
 EXPOSE_INTERFACE( CProxyBenefactorLevel, IMaterialProxy, "BenefactorLevel" IMATERIAL_PROXY_INTERFACE_VERSION );
 
 //-----------------------------------------------------------------------------
-// Purpose: Used for scaling the oscilloscope on the Building Rescue Gun
-// Flattens the Wave when the player has no energy
+// Purpose: Used for scaling the oscilloscope on the Rescue Ranger
+// Flattens the Wave when the player has insufficent energy to rescue buildings
+// Wave has horizontal scrolling whose speed and direction can be controlled from material proxy
 //-----------------------------------------------------------------------------
+
 class CProxyBuildingRescueLevel : public CResultProxy
 {
 public:
+// Add this member (default to something safe)
+    float m_flScrollSpeed = -0.1f;
+
+    virtual bool Init( IMaterial *pMaterial, KeyValues *pKeyValues )
+    {
+        // Call base init first if needed
+        if ( !CResultProxy::Init( pMaterial, pKeyValues ) )
+            return false;
+
+        // pKeyValues points to the { "screenScrollRate" "#" ... } subkey
+        if ( pKeyValues )
+        {
+            m_flScrollSpeed = pKeyValues->GetFloat( "screenScrollRate", -0.1f );  // fallback if missing
+        }
+
+        return true;
+    }
 	void OnBind( void *pC_BaseEntity )
 	{
 		Assert( m_pResult );
@@ -2338,6 +2360,17 @@ public:
 		MatrixBuildTranslation( temp, center.x, center.y, 0.0f );
 		MatrixMultiply( temp, mat, mat );
 
+
+		float flScrollSpeed = m_flScrollSpeed;
+
+		float scrollOffset = fmodf( gpGlobals->curtime * flScrollSpeed, 1.0f );
+		if ( scrollOffset < 0.0f )
+			scrollOffset += 1.0f;  // [0,1) range for seamless loop
+
+		// Apply horizontal scroll AFTER the existing scale/center operations
+		MatrixBuildTranslation( temp, scrollOffset, 0.0f, 0.0f );
+		MatrixMultiply( temp, mat, mat );
+
 		m_pResult->SetMatrixValue( mat );
 
 		if ( ToolsEnabled() )
@@ -2347,7 +2380,7 @@ public:
 	}
 };
 
-EXPOSE_INTERFACE( CProxyBuildingRescueLevel, IMaterialProxy, "BuildingRescueLevel" IMATERIAL_PROXY_INTERFACE_VERSION );
+EXPOSE_INTERFACE(CProxyBuildingRescueLevel, IMaterialProxy, "BuildingRescueLevel" IMATERIAL_PROXY_INTERFACE_VERSION);
 
 
 //-----------------------------------------------------------------------------