commit 084587ecb43ea3acdc43db3f583d657ff0219b2a
Author:     Simon Howard <fraggle@gmail.com>
AuthorDate: Sun Oct 19 17:02:26 2014 -0400
Commit:     Simon Howard <fraggle@gmail.com>
CommitDate: Sun Oct 19 17:02:26 2014 -0400

    doom: Write -cdrom savegames to c:\doomdata.

    When using the -cdrom command line parameter (does anyone still use
    that?), savegames should be written to c:\doomdata to properly
    reproduce Vanilla behavior. These were being incorrectly written to
    c:\doomdata\savegames\foo.wad instead.

    This fixes #175. Thanks Alexandre-Xavier.
---
 src/doom/d_main.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/doom/d_main.c b/src/doom/d_main.c
index 733a11fb..c7987b90 100644
--- a/src/doom/d_main.c
+++ b/src/doom/d_main.c
@@ -1250,7 +1250,7 @@ void D_DoomMain (void)
     // allowing play from CD.
     //

-    if (M_CheckParm("-cdrom") > 0)
+    if (M_ParmExists("-cdrom"))
     {
         printf(D_CDROM);

@@ -1263,7 +1263,7 @@ void D_DoomMain (void)

         M_SetConfigDir(NULL);
     }
-
+
     //!
     // @arg <x>
     // @vanilla
@@ -1468,7 +1468,18 @@ void D_DoomMain (void)
     // Set the gamedescription string. This is only possible now that
     // we've finished loading Dehacked patches.
     D_SetGameDescription();
-    savegamedir = M_GetSaveGameDir(D_SaveGameIWADName(gamemission));
+
+#ifdef _WIN32
+    // In -cdrom mode, we write savegames to c:\doomdata as well as configs.
+    if (M_ParmExists("-cdrom"))
+    {
+        savegamedir = configdir;
+    }
+    else
+#endif
+    {
+        savegamedir = M_GetSaveGameDir(D_SaveGameIWADName(gamemission));
+    }

     // Check for -file in shareware
     if (modifiedgame)