Mercurial > molko
view src/libmlk-core/core/action.c @ 347:0969931b98e4
core: start removing POSIX APIs
author | David Demelier <markand@malikania.fr> |
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date | Tue, 19 Oct 2021 13:23:30 +0200 |
parents | 8f9937403749 |
children | 1e06f871dc63 |
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/* * action.c -- action states * * Copyright (c) 2020-2021 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 <string.h> #include "action.h" #define ACTION_FOREACH(st, iter) \ for (size_t i = 0; i < ACTION_STACK_MAX && ((iter) = (st)->actions[i], 1); ++i) void action_handle(struct action *act, const union event *ev) { assert(act); assert(ev); if (act->handle) act->handle(act, ev); } int action_update(struct action *act, unsigned int ticks) { assert(act); if (act->update) return act->update(act, ticks); /* No function means immortal action. */ return 0; } void action_draw(struct action *act) { assert(act); if (act->draw) act->draw(act); } void action_end(struct action *act) { assert(act); if (act->end) act->end(act); } void action_finish(struct action *act) { assert(act); if (act->finish) act->finish(act); } void action_stack_init(struct action_stack *st) { assert(st); memset(st, 0, sizeof (*st)); } int action_stack_add(struct action_stack *st, struct action *act) { assert(st); assert(act); for (size_t i = 0; i < ACTION_STACK_MAX; ++i) { if (!st->actions[i]) { st->actions[i] = act; return 0; } } return -1; } void action_stack_handle(struct action_stack *st, const union event *ev) { assert(st); assert(ev); struct action *act; ACTION_FOREACH(st, act) if (act) action_handle(act, ev); } int action_stack_update(struct action_stack *st, unsigned int ticks) { assert(st); struct action *act; for (size_t i = 0; i < ACTION_STACK_MAX; ++i) { act = st->actions[i]; if (act && action_update(act, ticks)) { action_end(act); action_finish(act); st->actions[i] = NULL; } } /* * We process all actions again in case the user modified the stack * within their update function. */ return action_stack_completed(st); } void action_stack_draw(const struct action_stack *st) { assert(st); struct action *act; ACTION_FOREACH(st, act) if (act) action_draw(act); } int action_stack_completed(const struct action_stack *st) { assert(st); struct action *act; ACTION_FOREACH(st, act) if (act) return 0; return 1; } void action_stack_finish(struct action_stack *st) { assert(st); struct action *act; ACTION_FOREACH(st, act) { if (act) { action_end(act); action_finish(act); } } memset(st, 0, sizeof (*st)); }