Mercurial > molko
view src/libmlk-core/core/animation.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 | 460c78706989 |
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/* * animation.c -- basic animations * * 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 <string.h> #include "drawable.h" #include "animation.h" #include "sprite.h" static int update(struct drawable *dw, unsigned int ticks) { return animation_update(dw->data, ticks); } static void draw(struct drawable *dw) { animation_draw(dw->data, dw->x, dw->y); } void animation_init(struct animation *an, const struct sprite *sprite, unsigned int delay) { assert(an); assert(sprite); an->sprite = sprite; an->row = 0; an->column = 0; an->delay = delay; an->elapsed = 0; } void animation_start(struct animation *an) { assert(an); an->row = 0; an->column = 0; an->elapsed = 0; } int animation_completed(const struct animation *an) { assert(an); return an->elapsed >= an->delay && an->row >= an->sprite->nrows && an->column >= an->sprite->ncols; } int animation_update(struct animation *an, unsigned int ticks) { assert(an); an->elapsed += ticks; if (an->elapsed < an->delay) return 0; /* Increment column first */ if (++an->column >= an->sprite->ncols) { /* * Increment row, if we reach the last row it means we are * at the last frame. */ if (++an->row >= an->sprite->nrows) an->row = an->sprite->nrows; else an->column = an->elapsed = 0; } else an->elapsed = 0; return animation_completed(an); } int animation_draw(const struct animation *an, int x, int y) { assert(an); return sprite_draw(an->sprite, an->row, an->column, x, y); } void animation_drawable(struct animation *an, struct drawable *dw, int x, int y) { assert(an); assert(dw); memset(dw, 0, sizeof (*dw)); dw->data = an; dw->x = x - (an->sprite->cellw / 2); dw->y = y - (an->sprite->cellh / 2); dw->update = update; dw->draw = draw; animation_start(an); }