Mercurial > molko
diff libmlk-rpg/rpg/selection.c @ 289:63d9fb56c609
rpg: rework selection
author | David Demelier <markand@malikania.fr> |
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date | Thu, 07 Jan 2021 15:52:56 +0100 |
parents | |
children | d01e83210ca2 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libmlk-rpg/rpg/selection.c Thu Jan 07 15:52:56 2021 +0100 @@ -0,0 +1,84 @@ +/* + * selection.c -- kind of selection + * + * Copyright (c) 2020 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <assert.h> + +#include <core/util.h> + +#include "battle.h" +#include "character.h" +#include "selection.h" + +static void +random(struct selection *slt, const struct battle *bt, const struct battle_entity *entities, size_t entitiesz) +{ + struct { + const struct battle_entity *entity; + size_t position; + } table[BATTLE_ENTITY_MAX] = {0}; + + size_t tablesz = 0; + + /* + * Merge the list of valid entities into the table to select a random + * one. + */ + for (size_t i = 0; i < entitiesz; ++i) { + if (battle_entity_ok(&entities[i])) { + table[tablesz].entity = &entities[i]; + table[tablesz++].position = i; + } + } + + slt->index_character = table[util_nrand(0, tablesz)].position; +} + +static void +first(struct selection *slt, const struct battle *bt, const struct battle_entity *entities, size_t entitiesz) +{ + for (size_t i = 0; i < entitiesz; ++i) { + if (battle_entity_ok(&entities[i])) { + slt->index_character = i; + break; + } + } +} + +void +selection_first(struct selection *slt, const struct battle *bt) +{ + assert(slt); + assert(bt); + + if (slt->index_side == 0) + first(slt, bt, bt->enemies, BATTLE_ENEMY_MAX); + else + first(slt, bt, bt->team, BATTLE_TEAM_MAX); +} + +void +selection_random(struct selection *slt, const struct battle *bt) +{ + assert(slt); + assert(bt); + + if (slt->index_side == 0) + random(slt, bt, bt->enemies, BATTLE_ENEMY_MAX); + else + random(slt, bt, bt->team, BATTLE_TEAM_MAX); +}