From 29e7b9d813046415ca385b8fcea4c39249f9e78e Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Sun, 19 Jan 2014 07:35:58 +0000
Subject: doom: Add support for Freedoom IWAD names.

Freedoom has new IWAD names. Support these as fallbacks if no other
IWAD file can be found, but prefer FreeDM as it has Vanilla-
compatible levels. Show a warning on startup if running using the
main Freedoom IWADs.
---
 src/doom/d_main.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/doom/d_main.c')

diff --git a/src/doom/d_main.c b/src/doom/d_main.c
index 95342437..70144fb6 100644
--- a/src/doom/d_main.c
+++ b/src/doom/d_main.c
@@ -1387,6 +1387,18 @@ void D_DoomMain (void)
     I_PrintStartupBanner(gamedescription);
     PrintDehackedBanners();
 
+    // Freedoom's IWADs are Boom-compatible, which means they usually
+    // don't work in Vanilla (though FreeDM is okay). Show a warning
+    // message and give a link to the website.
+    if (W_CheckNumForName("FREEDOOM") >= 0 && W_CheckNumForName("FREEDM") < 0)
+    {
+        printf(" WARNING: You are playing using one of the Freedoom IWAD\n"
+               " files, which might not work in this port. See this page\n"
+               " for more information on how to play using Freedoom:\n"
+               "   http://www.chocolate-doom.org/wiki/index.php/Freedoom\n");
+        I_PrintDivider();
+    }
+
     DEH_printf("I_Init: Setting up machine state.\n");
     I_CheckIsScreensaver();
     I_InitTimer();
-- 
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