Rename L4D2_2147plus gametype tag to L4D2_2125plus

Turns out the cvar we use to detect 2147 was actually added in 2125.
Since renaming it doesn't currently break anything (and 2125 was a
fairly notable code shuffling update, given it was the first update with
a native Linux build of the game), it makes most sense to just do this.

6 files changed, 13 insertions, 10 deletions

diff --git a/gamedata/engine.txt b/gamedata/engine.txt
index 9c37f6d..ab6fbd5 100644
--- a/gamedata/engine.txt
+++ b/gamedata/engine.txt
@@ -59,7 +59,7 @@ vtidx_GetEngineBuildNumber
 	#L4D1_1005 99
 	#L4D1_Steam 97
 vtidx_ManageAddonsForActiveSession
-	L4D2_2147plus 179
+	L4D2_2125plus 179
 
 # IGameUIFuncs
 vtidx_GetDesktopResolution 5
@@ -84,7 +84,7 @@ vtidx_SetPaintEnabled 67
 	Client013
 		L4D1 68
 		L4D2 71
-			L4D2_2147plus 72
+			L4D2_2125plus 72
 	Client014
 		L4D2 70
 vtidx_Paint 123
@@ -92,7 +92,7 @@ vtidx_Paint 123
 		L4D2 126 # 2000
 	Client013
 		L4D2 127 # 2045
-			L4D2_2147plus 128
+			L4D2_2125plus 128
 
 # SendProp
 sz_SendProp
diff --git a/gamedata/vguimatsurface.txt b/gamedata/vguimatsurface.txt
index e35c125..dbb5891 100644
--- a/gamedata/vguimatsurface.txt
+++ b/gamedata/vguimatsurface.txt
@@ -29,16 +29,16 @@ vtidx_DrawPrintText
 vtidx_GetScreenSize
 	OrangeBoxbased 37
 	L4D 37
-		L4D2_2147plus 35
+		L4D2_2125plus 35
 # Unused: currently no good way to create custom fonts without leaking them
 #vtidx_CreateFont
 #	OrangeBoxbased 64
 #	L4D 64
-#		L4D2_2147plus 63
+#		L4D2_2125plus 63
 #vtidx_SetFontGlyphSet
 #	OrangeBoxbased 65
 #	L4D 65
-#		L4D2_2147plus 64
+#		L4D2_2125plus 64
 vtidx_GetFontTall
 	OrangeBoxbased 67
 	L4D 67
diff --git a/src/engineapi.c b/src/engineapi.c
index a8f4167..cc5f2cf 100644
--- a/src/engineapi.c
+++ b/src/engineapi.c
@@ -1,6 +1,7 @@
 /*
  * Copyright © 2025 Michael Smith <mikesmiffy128@gmail.com>
  * Copyright © 2023 Willian Henrique <wsimanbrazil@yahoo.com.br>
+ * Copyright © 2025 Hayden K <imaciidz@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -106,7 +107,7 @@ bool engineapi_init(int pluginver) {
 
 	if (GAMETYPE_MATCHES(L4D2)) {
 		if (con_findvar("sv_zombie_touch_trigger_delay")) {
-			_gametype_tag |= _gametype_tag_L4D2_2147plus;
+			_gametype_tag |= _gametype_tag_L4D2_2125plus;
 		}
 		if (con_findvar("director_cs_weapon_spawn_chance")) {
 			_gametype_tag |= _gametype_tag_TheLastStand;
diff --git a/src/fastfwd.c b/src/fastfwd.c
index 7378b04..fa45beb 100644
--- a/src/fastfwd.c
+++ b/src/fastfwd.c
@@ -2,6 +2,7 @@
  * Copyright © 2023 Matthew Wozniak <sirtomato999@gmail.com>
  * Copyright © 2025 Michael Smith <mikesmiffy128@gmail.com>
  * Copyright © 2023 Willian Henrique <wsimanbrazil@yahoo.com.br>
+ * Copyright © 2025 Hayden K <imaciidz@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -221,7 +222,7 @@ INIT {
 		errmsg_errorx("couldn't find FrameUpdate function");
 		return FEAT_INCOMPAT;
 	}
-	if_cold (!(func = find_floatcall(func, GAMETYPE_MATCHES(L4D2_2147plus) ?
+	if_cold (!(func = find_floatcall(func, GAMETYPE_MATCHES(L4D2_2125plus) ?
 			2 : 1, "CHostState::State_Run"))) {
 		errmsg_errorx("couldn't find State_Run function");
 		return FEAT_INCOMPAT;
diff --git a/src/gametype.h b/src/gametype.h
index a6d6b0c..98d360a 100644
--- a/src/gametype.h
+++ b/src/gametype.h
@@ -1,6 +1,7 @@
 /*
  * Copyright © 2025 Michael Smith <mikesmiffy128@gmail.com>
  * Copyright © 2023 Willian Henrique <wsimanbrazil@yahoo.com.br>
+ * Copyright © 2025 Hayden K <imaciidz@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -53,7 +54,7 @@ extern u32 _gametype_tag;
 
 /* games needing version-specific stuff */
 #define _gametype_tag_Portal1_3420	(1 << 17)
-#define _gametype_tag_L4D2_2147plus	(1 << 18)
+#define _gametype_tag_L4D2_2125plus	(1 << 18)
 #define _gametype_tag_TheLastStand	(1 << 19) /* The JAiZ update */
 
 /* Matches for any multiple possible tags */
diff --git a/src/l4daddon.c b/src/l4daddon.c
index 19c7a2f..30f68eb 100644
--- a/src/l4daddon.c
+++ b/src/l4daddon.c
@@ -35,7 +35,7 @@
 #include "x86util.h"
 
 FEATURE("Left 4 Dead 2 addon bugfixes")
-GAMESPECIFIC(L4D2_2147plus)
+GAMESPECIFIC(L4D2_2125plus)
 REQUIRE_GAMEDATA(vtidx_ManageAddonsForActiveSession)
 REQUIRE_GLOBAL(engclient)