From 10e606e2b6a61c0ab8950d1acb434614b4b72bf4 Mon Sep 17 00:00:00 2001
From: Garritt McCune <glmccune@gmail.com>
Date: Tue, 1 Nov 2022 18:10:01 +0000
Subject: [PATCH] Fixed a memory corruption bug in the List's render function.

---
 includes/texture_font_cache.h |  1 +
 src/list.c                    |  5 +++--
 src/main.c                    |  1 +
 src/texture_font_cache.c      | 12 ++++++++++++
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/includes/texture_font_cache.h b/includes/texture_font_cache.h
index 9e69bb2..74841f6 100644
--- a/includes/texture_font_cache.h
+++ b/includes/texture_font_cache.h
@@ -18,6 +18,7 @@ typedef struct {
 
 TextureFontCache* CreateTextureFontCache();
 TextureDetails* AddTextureToCache(SDL_Texture* texture, unsigned short fontSize, SDL_Rect textSize, TextureFontCache* cache);
+void UpdateTextureDetails(SDL_Texture* texture, unsigned short fontSize, SDL_Rect textSize, int index, TextureFontCache* cache);
 TextureDetails* GetTextureFromCache(TextureFontCache* cache, unsigned int index);
 void FreeTextureDetails(TextureDetails* details);
 
diff --git a/src/list.c b/src/list.c
index 65601ae..67e873a 100644
--- a/src/list.c
+++ b/src/list.c
@@ -45,13 +45,14 @@ void RenderList(SDL_Renderer* renderer, SDL_FPoint motion, TTF_Font* font, unsig
         TTF_SizeUTF8(font, "List (Array)", &textSize.w, &textSize.h);
         SDL_Surface* surface = TTF_RenderText_Shaded(font, "List (Array)", (SDL_Color){255, 255, 255, 0}, (SDL_Color){0, 0, 0, 0});
         
-        if (!details) FreeTextureDetails(details);
+        //if (!details) FreeTextureDetails(details);
 
         SDL_Texture* tex = SDL_CreateTextureFromSurface(renderer, surface);
         
         SDL_FreeSurface(surface);
         
-        details = AddTextureToCache(tex, fontSize, textSize, list->TextureCache);
+        if (details) UpdateTextureDetails(tex, fontSize, textSize, 0, list->TextureCache);
+        else details = AddTextureToCache(tex, fontSize, textSize, list->TextureCache);
     }
 
     SDL_FRect size;
diff --git a/src/main.c b/src/main.c
index df2a1dc..af76be3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -186,6 +186,7 @@ void HandleInput(void) {
                 Exit = 1;
                 break;
             case SDL_MOUSEBUTTONDOWN:
+                if (event.button.button == SDL_BUTTON_RIGHT) Exit = 1;
                 MouseDown = 1;
                 break;
             case SDL_MOUSEBUTTONUP:
diff --git a/src/texture_font_cache.c b/src/texture_font_cache.c
index 766996c..3eaa022 100644
--- a/src/texture_font_cache.c
+++ b/src/texture_font_cache.c
@@ -45,6 +45,18 @@ TextureDetails* AddTextureToCache(SDL_Texture* texture, unsigned short fontSize,
     return cache->Textures[cache->Size - 1];
 }
 
+void UpdateTextureDetails(SDL_Texture* texture, unsigned short fontSize, SDL_Rect textSize, int index, TextureFontCache* cache) {
+    if (index >= cache->Size) return;
+
+    TextureDetails* details = cache->Textures[index];
+
+    SDL_DestroyTexture(details->Texture);
+
+    details->Texture = texture;
+    details->FontSize = fontSize;
+    details->TextSize = textSize;
+}
+
 void FreeTextureDetails(TextureDetails* details) {
     if (!details) return;