From 467cf2800b21204b35dc34fa5bc383cb8508d4e4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ricardo=20Lu=C3=ADs=20Vaz=20Silva?= <ricolvs123@gmail.com>
Date: Sat, 10 Aug 2024 16:51:56 -0300
Subject: [PATCH] Fix compilation

---
 .../rendering/hwrenderer/data/hw_meshbuilder.cpp   | 14 ++++++++++++++
 src/levelmeshhelper.h                              | 11 ++++-------
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/src/common/rendering/hwrenderer/data/hw_meshbuilder.cpp b/src/common/rendering/hwrenderer/data/hw_meshbuilder.cpp
index 6df23029e..cfad561b1 100644
--- a/src/common/rendering/hwrenderer/data/hw_meshbuilder.cpp
+++ b/src/common/rendering/hwrenderer/data/hw_meshbuilder.cpp
@@ -1,8 +1,22 @@
 
+#include "levelmeshhelper.h"
 #include "hw_meshbuilder.h"
 #include "hw_mesh.h"
 #include "v_video.h"
 
+
+struct NullLevelMeshUpdater : UpdateLevelMesh
+{
+	virtual void SectorChanged(void *sector) {};
+
+	virtual void SideChanged(void *side) {};
+};
+
+static NullLevelMeshUpdater nullUpdater;
+
+UpdateLevelMesh* LevelMeshUpdater = &nullUpdater;
+
+
 MeshBuilder::MeshBuilder()
 {
 	Reset();
diff --git a/src/levelmeshhelper.h b/src/levelmeshhelper.h
index 616c4eac0..6fd72bbcf 100644
--- a/src/levelmeshhelper.h
+++ b/src/levelmeshhelper.h
@@ -1,15 +1,12 @@
+#pragma once
 // level mesh helper
 // this is a minimal include to keep the other source files a little bit leaner
 
 struct UpdateLevelMesh
 {
-	void SectorChanged(void *sector)
-	{
-	}
+	virtual void SectorChanged(void *sector) = 0;
 
-	void SideChanged(void *side)
-	{
-	}
+	virtual void SideChanged(void *side) = 0;
 };
 
-UpdateLevelMesh* LevelMeshUpdater;
+extern UpdateLevelMesh* LevelMeshUpdater;