From b1ece32aaba8bf6b7f233de77b6843af179631b0 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Fri, 25 Jul 2008 19:56:39 +0000
Subject: Initial chex.exe emulation.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 1155
---
 src/d_iwad.c   | 87 ++++++++++++++++++++++++++++++++++++++++------------------
 src/d_main.c   |  7 ++++-
 src/doomdef.h  |  1 +
 src/f_finale.c |  7 +++++
 src/g_game.c   | 39 ++++++++++++++++++--------
 src/m_menu.c   |  5 +++-
 6 files changed, 106 insertions(+), 40 deletions(-)

(limited to 'src')

diff --git a/src/d_iwad.c b/src/d_iwad.c
index d54ad915..032679e6 100644
--- a/src/d_iwad.c
+++ b/src/d_iwad.c
@@ -325,7 +325,18 @@ static struct
     {"tnt.wad",      pack_tnt},
     {"doom.wad",     doom},
     {"doom1.wad",    doom},
+    {"chex.wad",     doom},
 };
+            
+// Hack for chex quest mode
+
+static void CheckChex(char *iwad_name)
+{
+    if (!strcmp(iwad_name, "chex.wad")) 
+    {
+        gameversion = exe_chex;
+    }
+}
 
 // Search a directory to try to find an IWAD
 // Returns the location of the IWAD if found, otherwise NULL.
@@ -354,7 +365,9 @@ static char *SearchDirectoryForIWAD(char *dir)
 
         if (M_FileExists(filename))
         {
+            CheckChex(iwads[i].name);
             gamemission = iwads[i].mission;
+
             return filename;
         }
 
@@ -387,6 +400,7 @@ static void IdentifyIWADByName(char *name)
         if (!strcasecmp(name + strlen(name) - strlen(iwadname), 
                         iwadname))
         {
+            CheckChex(iwads[i].name);
             gamemission = iwads[i].mission;
             break;
         }
@@ -618,6 +632,43 @@ char *D_FindIWAD(void)
     return result;
 }
 
+// 
+// Get the IWAD name used for savegames.
+//
+
+static char *SaveGameIWADName(void)
+{
+    size_t i;
+
+    // Chex quest hack
+
+    if (gameversion == exe_chex)
+    {
+        return "chex.wad";
+    }
+
+    // Find what subdirectory to use for savegames
+    //
+    // They should be stored in something like
+    //    ~/.chocolate-doom/savegames/doom.wad/
+    //
+    // The directory depends on the IWAD, so that savegames for
+    // different IWADs are kept separate.
+    //
+    // Note that we match on gamemission rather than on IWAD name.
+    // This ensures that doom1.wad and doom.wad saves are stored
+    // in the same place.
+
+    for (i=0; i<arrlen(iwads); ++i)
+    {
+        if (gamemission == iwads[i].mission)
+        {
+            return iwads[i].name;
+        }
+    }
+    
+    return NULL;
+}
 // 
 // SetSaveGameDir
 //
@@ -626,7 +677,7 @@ char *D_FindIWAD(void)
 
 void D_SetSaveGameDir(void)
 {
-    size_t i;
+    char *iwad_name;
 
     if (!strcmp(configdir, ""))
     {
@@ -638,34 +689,18 @@ void D_SetSaveGameDir(void)
     {
         // Directory for savegames
 
-        savegamedir = Z_Malloc(strlen(configdir) + 30, PU_STATIC, 0);
-        sprintf(savegamedir, "%ssavegames", configdir);
-
-        M_MakeDirectory(savegamedir);
+        iwad_name = SaveGameIWADName();
 
-        // Find what subdirectory to use for savegames
-        //
-        // They should be stored in something like
-        //    ~/.chocolate-doom/savegames/doom.wad/
-        //
-        // The directory depends on the IWAD, so that savegames for
-        // different IWADs are kept separate.
-        //
-        // Note that we match on gamemission rather than on IWAD name.
-        // This ensures that doom1.wad and doom.wad saves are stored
-        // in the same place.
-
-        for (i=0; i<arrlen(iwads); ++i)
+        if (iwad_name == NULL) 
         {
-            if (gamemission == iwads[i].mission)
-            {
-                sprintf(savegamedir + strlen(savegamedir), 
-                        "%c%s%c", 
-                        DIR_SEPARATOR, iwads[i].name, DIR_SEPARATOR);
-                M_MakeDirectory(savegamedir);
-                break;
-            }
+            iwad_name = "unknown.wad";
         }
+
+        savegamedir = Z_Malloc(strlen(configdir) + 30, PU_STATIC, 0);
+        sprintf(savegamedir, "%ssavegames%c%s%c", configdir,
+                             DIR_SEPARATOR, iwad_name, DIR_SEPARATOR);
+
+        M_MakeDirectory(savegamedir);
     }
 }
 
diff --git a/src/d_main.c b/src/d_main.c
index 5e9d3f5b..6b90d57e 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -662,6 +662,7 @@ static struct
     {"Doom 1.9",             "1.9",        exe_doom_1_9},
     {"Ultimate Doom",        "ultimate",   exe_ultimate},
     {"Final Doom",           "final",      exe_final},
+    {"Chex Quest",           "chex",       exe_chex},
     { NULL,                  NULL,         0},
 };
 
@@ -710,7 +711,11 @@ static void InitGameVersion(void)
     {
         // Determine automatically
 
-        if (gamemode == shareware || gamemode == registered)
+        if (gameversion == exe_chex) 
+        {
+            // Already determined
+        }
+        else if (gamemode == shareware || gamemode == registered)
         {
             // original
 
diff --git a/src/doomdef.h b/src/doomdef.h
index acd2a5d6..87021ae2 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -105,6 +105,7 @@ typedef enum
 {
     exe_doom_1_9,   // Doom 1.9: used for shareware, registered and commercial
     exe_ultimate,   // Ultimate Doom (retail)
+    exe_chex,       // Chex Quest executable (based on Ultimate Doom)
     exe_final,      // Final Doom
 } GameVersion_t;
 
diff --git a/src/f_finale.c b/src/f_finale.c
index 7674f09f..1a3a85ca 100644
--- a/src/f_finale.c
+++ b/src/f_finale.c
@@ -136,6 +136,13 @@ void F_StartFinale (void)
     {
         textscreen_t *screen = &textscreens[i];
 
+        // Hack for Chex Quest
+
+        if (gameversion == exe_chex && screen->mission == doom)
+        {
+            screen->level = 5;
+        }
+
         if (gamemission == screen->mission
          && (gamemission != doom || gameepisode == screen->episode)
          && gamemap == screen->level)
diff --git a/src/g_game.c b/src/g_game.c
index fc644778..44e77a74 100644
--- a/src/g_game.c
+++ b/src/g_game.c
@@ -1258,18 +1258,33 @@ void G_DoCompleted (void)
     if (automapactive) 
 	AM_Stop (); 
 	
-    if ( gamemode != commercial)
-	switch(gamemap)
-	{
-	  case 8:
-	    gameaction = ga_victory;
-	    return;
-	  case 9: 
-	    for (i=0 ; i<MAXPLAYERS ; i++) 
-		players[i].didsecret = true; 
-	    break;
-	}
-		
+    if (gamemode != commercial)
+    {
+        // Chex Quest ends after 5 levels, rather than 8.
+
+        if (gameversion == exe_chex)
+        {
+            if (gamemap == 5)
+            {
+                gameaction = ga_victory;
+                return;
+            }
+        }
+        else
+        {
+            switch(gamemap)
+            {
+              case 8:
+                gameaction = ga_victory;
+                return;
+              case 9: 
+                for (i=0 ; i<MAXPLAYERS ; i++) 
+                    players[i].didsecret = true; 
+                break;
+            }
+        }
+    }
+
 //#if 0  Hmmm - why?
     if ( (gamemap == 8)
 	 && (gamemode != commercial) ) 
diff --git a/src/m_menu.c b/src/m_menu.c
index 1426faa9..85d09a48 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -777,6 +777,7 @@ void M_DrawReadThis1(void)
             break;
 
         case exe_ultimate:
+        case exe_chex:
 
             // Ultimate Doom always displays "HELP1".
 
@@ -901,7 +902,9 @@ void M_NewGame(int choice)
 	return;
     }
 	
-    if ( gamemode == commercial )
+    // Chex Quest disabled the episode select screen, as did Doom II.
+
+    if (gamemode == commercial || gameversion == exe_chex)
 	M_SetupNextMenu(&NewDef);
     else
 	M_SetupNextMenu(&EpiDef);
-- 
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