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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// 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.
//
#include "doomtype.h"
#include "d_mode.h"
// Valid game mode/mission combinations, with the number of
// episodes/maps for each.
static struct
{
GameMission_t mission;
GameMode_t mode;
int episode;
int map;
} valid_modes[] = {
{ doom, shareware, 1, 9 },
{ doom, registered, 3, 9 },
{ doom, retail, 4, 9 },
{ doom2, commercial, 1, 32 },
{ pack_tnt, commercial, 1, 32 },
{ pack_plut, commercial, 1, 32 },
{ heretic, shareware, 1, 9 },
{ heretic, registered, 3, 9 },
{ heretic, retail, 5, 9 },
{ hexen, commercial, 1, 40 },
};
// Check that a gamemode+gamemission received over the network is valid.
boolean D_ValidGameMode(GameMission_t mission, GameMode_t mode)
{
int i;
for (i=0; i<arrlen(valid_modes); ++i)
{
if (valid_modes[i].mode == mode && valid_modes[i].mission == mission)
{
return true;
}
}
return false;
}
boolean D_ValidEpisodeMap(GameMission_t mission, GameMode_t mode,
int episode, int map)
{
int i;
// Hacks for Heretic secret episodes
if (mission == heretic)
{
if (mode == retail && episode == 6)
{
return map >= 1 && map <= 3;
}
else if (mode == registered && episode == 4)
{
return map == 1;
}
}
// Find the table entry for this mission/mode combination.
for (i=0; i<arrlen(valid_modes); ++i)
{
if (mission == valid_modes[i].mission
&& mode == valid_modes[i].mode)
{
return episode >= 1 && episode <= valid_modes[i].episode
&& map >= 1 && map <= valid_modes[i].map;
}
}
// Unknown mode/mission combination
return false;
}
// Get the number of valid episodes for the specified mission/mode.
int D_GetNumEpisodes(GameMission_t mission, GameMode_t mode)
{
int episode;
episode = 1;
while (D_ValidEpisodeMap(mission, mode, episode, 1))
{
++episode;
}
return episode - 1;
}
// Table of valid versions
static struct {
GameMission_t mission;
GameVersion_t version;
} valid_versions[] = {
{ doom, exe_doom_1_9 },
{ doom, exe_ultimate },
{ doom, exe_chex },
{ doom, exe_final },
{ heretic, exe_heretic_1_3 },
{ hexen, exe_hexen_1_1 },
};
boolean D_ValidGameVersion(GameMission_t mission, GameVersion_t version)
{
int i;
// All Doom variants can use the Doom versions.
if (mission == doom2 || mission == pack_plut || mission == pack_tnt)
{
mission = doom;
}
for (i=0; i<arrlen(valid_versions); ++i)
{
if (valid_versions[i].mission == mission
&& valid_versions[i].version == version)
{
return true;
}
}
return false;
}
// Does this mission type use ExMy form, rather than MAPxy form?
boolean D_IsEpisodeMap(GameMission_t mission)
{
switch (mission)
{
case doom:
case heretic:
return true;
case none:
case hexen:
case doom2:
case pack_tnt:
case pack_plut:
return false;
}
}
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