From 964cf66f6b4860d518ed67d041bda222de5f29ca Mon Sep 17 00:00:00 2001
From: Ted John <ted@brambles.org>
Date: Sat, 16 Jul 2016 18:07:48 +0100
Subject: [PATCH] Zero g1 elements when freeing images

This is to help diagnose issues where we are drawing invalid sprites as well as general cleanliness
---
 src/drawing/Image.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/drawing/Image.cpp b/src/drawing/Image.cpp
index dc82de5dfb..acc92962fc 100644
--- a/src/drawing/Image.cpp
+++ b/src/drawing/Image.cpp
@@ -145,6 +145,15 @@ extern "C"
     {
         if (baseImageId != 0)
         {
+            // Zero the G1 elements so we don't have invalid pointers
+            // and data lying about
+            for (uint32 i = 0; i < count; i++)
+            {
+                uint32 imageId = baseImageId + i;
+                g1Elements[imageId] = { 0 };
+                drawing_engine_invalidate_image(imageId);
+            }
+
             FreeImageList(baseImageId, count);
         }
     }