From 2ba339035c5465ba869c81fe0e32fbaa9bf95754 Mon Sep 17 00:00:00 2001
From: Joonas Rikkonen <poe.regalis@gmail.com>
Date: Fri, 12 Jan 2018 16:17:02 +0200
Subject: [PATCH] Fixed LOS lightsource keeping references to already unloaded
 convex hulls and subs, causing the los effects of the previously loaded subs
 to be always rendered.

---
 .../Source/Map/Lights/LightManager.cs         |  1 +
 .../Source/Map/Lights/LightSource.cs          | 22 +++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs b/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs
index 0cd602cac..9d2ed314f 100644
--- a/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs
+++ b/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs
@@ -370,6 +370,7 @@ namespace Barotrauma.Lights
         public void ClearLights()
         {
             lights.Clear();
+            losSource.Reset();
         }
     }
 
diff --git a/Barotrauma/BarotraumaClient/Source/Map/Lights/LightSource.cs b/Barotrauma/BarotraumaClient/Source/Map/Lights/LightSource.cs
index 07bd5dd0a..3bf19416c 100644
--- a/Barotrauma/BarotraumaClient/Source/Map/Lights/LightSource.cs
+++ b/Barotrauma/BarotraumaClient/Source/Map/Lights/LightSource.cs
@@ -641,6 +641,28 @@ namespace Barotrauma.Lights
             );
         }
         
+        public void Reset()
+        {
+            hullsInRange.Clear();
+            diffToSub.Clear();
+            NeedsHullCheck = true;
+            NeedsRecalculation = true;
+
+            vertexCount = 0;
+            if (lightVolumeBuffer != null)
+            {
+                lightVolumeBuffer.Dispose();
+                lightVolumeBuffer = null;
+            }
+
+            indexCount = 0;
+            if (lightVolumeIndexBuffer != null)
+            {
+                lightVolumeIndexBuffer.Dispose();
+                lightVolumeIndexBuffer = null;
+            }
+        }
+
         public void Remove()
         {
             if (LightSprite != null) LightSprite.Remove();