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+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 2005 Simon Howard
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+// Functions and definitions relating to the game type and operational
+// mode.
+//
+//-----------------------------------------------------------------------------
+
+#ifndef __D_MODE__
+#define __D_MODE__
+
+#include "doomtype.h"
+
+// The "mission" controls what game we are playing.
+
+typedef enum
+{
+ doom, // Doom 1
+ doom2, // Doom 2
+ pack_tnt, // Final Doom: TNT: Evilution
+ pack_plut, // Final Doom: The Plutonia Experiment
+ heretic, // Heretic
+ hexen, // Hexen
+
+ none
+} GameMission_t;
+
+// The "mode" allows more accurate specification of the game mode we are
+// in: eg. shareware vs. registered. So doom1.wad and doom.wad are the
+// same mission, but a different mode.
+
+typedef enum
+{
+ shareware, // Doom/Heretic shareware
+ registered, // Doom/Heretic registered
+ commercial, // Doom II/Hexen
+ retail, // Ultimate Doom
+ indetermined // Unknown.
+} GameMode_t;
+
+// What version are we emulating?
+
+typedef enum
+{
+ exe_doom_1_9, // Doom 1.9: used for shareware, registered and commercial
+ exe_ultimate, // Ultimate Doom (retail)
+ exe_final, // Final Doom
+ exe_chex, // Chex Quest executable (based on Final Doom)
+
+ exe_heretic_1_3, // Heretic 1.3
+
+ exe_hexen_1_1 // Hexen 1.1
+} GameVersion_t;
+
+// Skill level.
+
+typedef enum
+{
+ sk_noitems = -1, // the "-skill 0" hack
+ sk_baby = 0,
+ sk_easy,
+ sk_medium,
+ sk_hard,
+ sk_nightmare
+} skill_t;
+
+boolean D_ValidGameMode(GameMission_t mission, GameMode_t mode);
+boolean D_ValidGameVersion(GameMission_t mission, GameVersion_t version);
+boolean D_ValidEpisodeMap(GameMission_t mission, GameMode_t mode,
+ int episode, int map);
+int D_GetNumEpisodes(GameMission_t mission, GameMode_t mode);
+boolean D_IsEpisodeMap(GameMission_t mission);
+
+#endif /* #ifndef __D_MODE__ */
+