From 75d20733079be3d11501c6dcb20da111d8763740 Mon Sep 17 00:00:00 2001
From: Monster Iestyn <iestynjealous@ntlworld.com>
Date: Mon, 11 Jun 2018 20:23:00 +0100
Subject: [PATCH] Do the usual hack for loading a lump from a map WAD in a pk3,
 but this time for P_LoadThingsOnly

---
 src/p_setup.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/p_setup.c b/src/p_setup.c
index a5544c26b..127a5b880 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -2402,7 +2402,17 @@ void P_LoadThingsOnly(void)
 
 	P_LevelInitStuff();
 
-	P_PrepareThings(lastloadedmaplumpnum + ML_THINGS);
+	if (W_IsLumpWad(lastloadedmaplumpnum)) // welp it's a map wad in a pk3
+	{ // HACK: Open wad file rather quickly so we can use the things lump
+		UINT8 *wadData = W_CacheLumpNum(lastloadedmaplumpnum, PU_STATIC);
+		filelump_t *fileinfo = (filelump_t *)(wadData + ((wadinfo_t *)wadData)->infotableofs);
+		fileinfo += ML_THINGS; // we only need the THINGS lump
+		P_PrepareRawThings(wadData + fileinfo->filepos, fileinfo->size);
+		Z_Free(wadData); // we're done with this now
+	}
+	else // phew it's just a WAD
+		P_PrepareThings(lastloadedmaplumpnum + ML_THINGS);
+
 	P_LoadThings();