Mercurial > molko
view src/libmlk-rpg/rpg/inventory.c @ 428:26d23999a54b
core: get rid of zfile
author | David Demelier <markand@malikania.fr> |
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date | Sat, 15 Oct 2022 14:38:15 +0200 |
parents | 460c78706989 |
children |
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/* * inventory.c -- item inventory * * Copyright (c) 2020-2022 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 <stddef.h> #include "inventory.h" static struct inventory_slot * find(struct inventory *iv, const struct item *item) { for (size_t i = 0; i < INVENTORY_ITEM_MAX; ++i) if (iv->items[i].item == item) return &iv->items[i]; return NULL; } int inventory_add(struct inventory *iv, const struct item *item, unsigned int amount) { assert(iv); assert(item); struct inventory_slot *slot; /* Find one existing, otherwise find one empty. */ if (!(slot = find(iv, item))) slot = find(iv, NULL); if (!slot) return 0; slot->item = item; slot->amount += amount; return -1; } void inventory_consume(struct inventory *iv, const struct item *item, unsigned int amount) { assert(iv); assert(item); struct inventory_slot *slot; if ((slot = find(iv, item))) { slot->amount -= amount; if (slot->amount == 0) slot->item = NULL; } }