From c2ab7e828dc9b593d2245269d3740d428306da41 Mon Sep 17 00:00:00 2001
From: Zaurzo <101999193+Zaurzo@users.noreply.github.com>
Date: Sun, 14 May 2023 16:24:51 -0400
Subject: [PATCH 1/2] Add AddLegacyType & GetLegacyTypes

---
 garrysmod/lua/includes/modules/notification.lua | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/garrysmod/lua/includes/modules/notification.lua b/garrysmod/lua/includes/modules/notification.lua
index 2e650a2334..c490a3a405 100644
--- a/garrysmod/lua/includes/modules/notification.lua
+++ b/garrysmod/lua/includes/modules/notification.lua
@@ -84,6 +84,21 @@ function AddLegacy( text, type, length )
 
 end
 
+function AddLegacyType( legacyName, materialName )
+	if ( !isstring( legacyName ) ) then error( "bad argument #1 to 'AddLegacyType' (string expected, got " .. type( legacyName ) .. ")", 2 ) return end
+	if ( !isstring( materialName ) ) then error( "bad argument #2 to 'AddLegacyType' (string expected, got " .. type( materialName ) .. ")", 2 ) return end
+
+	local mat = Material( materialName )
+
+	if ( !mat || mat:IsError() ) then return end
+
+	NoticeMaterial[ legacyName ] = mat
+end
+
+function GetLegacyTypes()
+	return NoticeMaterial
+end
+
 -- This is ugly because it's ripped straight from the old notice system
 local function UpdateNotice( pnl, total_h )
 

From 6b5cb608a38307c3995031bc841edcac6bae1a26 Mon Sep 17 00:00:00 2001
From: Zaurzo <101999193+Zaurzo@users.noreply.github.com>
Date: Wed, 22 Nov 2023 22:22:13 -0500
Subject: [PATCH 2/2] Add proper return and fallback

- Return the created IMaterial for the icon on success
- If the material is nil or an error, fallback to the generic notify icon and return false
---
 garrysmod/lua/includes/modules/notification.lua | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/garrysmod/lua/includes/modules/notification.lua b/garrysmod/lua/includes/modules/notification.lua
index c490a3a405..4e5a6ec18d 100644
--- a/garrysmod/lua/includes/modules/notification.lua
+++ b/garrysmod/lua/includes/modules/notification.lua
@@ -84,15 +84,23 @@ function AddLegacy( text, type, length )
 
 end
 
+local matNotifyGeneric = NoticeMaterial[ NOTIFY_GENERIC ]
+
 function AddLegacyType( legacyName, materialName )
 	if ( !isstring( legacyName ) ) then error( "bad argument #1 to 'AddLegacyType' (string expected, got " .. type( legacyName ) .. ")", 2 ) return end
 	if ( !isstring( materialName ) ) then error( "bad argument #2 to 'AddLegacyType' (string expected, got " .. type( materialName ) .. ")", 2 ) return end
 
 	local mat = Material( materialName )
 
-	if ( !mat || mat:IsError() ) then return end
+	if ( !mat || mat:IsError() ) then
+		NoticeMaterial[ legacyName ] = matNotifyGeneric
+
+		return false
+	end
 
 	NoticeMaterial[ legacyName ] = mat
+
+	return mat
 end
 
 function GetLegacyTypes()