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Diffstat (limited to 'src/d_mode.c')
| -rw-r--r-- | src/d_mode.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/d_mode.c b/src/d_mode.c new file mode 100644 index 00000000..453ae4eb --- /dev/null +++ b/src/d_mode.c @@ -0,0 +1,178 @@ +// 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: + default: + return false; + } +} + |