Add back the Doom PWAD reload hack.

This was removed back in d190b596c566394717324296cbf6b46e67c64f5c;
at the time I didn't understand what it was or how it was supposed
to be used - it seemed like cruft left over from Doom's development.

It is actually a potentially useful feature for level authors when
developing their maps. See here: http://doomwiki.org/wiki/Reload_hack

The reload hack is a relatively obscure feature of limited usefulness
nowadays, but nonetheless a technical curiosity that ought to be
preserved in Chocolate Doom.

The reimplementation here is a lot cleaner than the original version
from the source release: W_Reload() is based on a call to W_AddFile(),
we don't reopen the reload file every time we want to read a lump,
and we include a check in W_AddFile() that we are not trying to use
the hack on more than one PWAD file.

This fixes #539.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/strife/p_setup.c b/src/strife/p_setup.c
index 1fd889fa..fe1140bd 100644
--- a/src/strife/p_setup.c
+++ b/src/strife/p_setup.c
@@ -785,6 +785,9 @@ P_SetupLevel
     // UNUSED W_Profile ();
     P_InitThinkers ();
 
+    // if working with a devlopment map, reload it
+    W_Reload();
+
     // [STRIFE] Removed ExMy map support
     if (map<10)
         DEH_snprintf(lumpname, 9, "map0%i", map);