Mercurial > molko
view src/libmlk-core/core/sprite.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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/* * sprite.c -- image sprites * * 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 "sprite.h" #include "texture.h" void sprite_init(struct sprite *sprite, struct texture *tex, unsigned int cellw, unsigned int cellh) { assert(sprite); assert(tex && texture_ok(tex)); sprite->texture = tex; sprite->cellw = cellw; sprite->cellh = cellh; sprite->nrows = tex->h / cellh; sprite->ncols = tex->w / cellw; } int sprite_ok(const struct sprite *sprite) { return sprite && texture_ok(sprite->texture) && sprite->cellw != 0 && sprite->cellh != 0; } int sprite_draw(const struct sprite *sprite, unsigned int r, unsigned int c, int x, int y) { return sprite_scale(sprite, r, c, x, y, sprite->cellw, sprite->cellh); } int sprite_scale(const struct sprite *sprite, unsigned int r, unsigned int c, int x, int y, unsigned int w, unsigned int h) { assert(sprite_ok(sprite)); assert(r < sprite->nrows); assert(c < sprite->ncols); return texture_scale( sprite->texture, c * sprite->cellw, /* src y */ r * sprite->cellh, /* src x */ sprite->cellw, /* src width */ sprite->cellh, /* src height */ x, /* dst x */ y, /* dst y */ w, /* dst width */ h, /* dst height */ 0.0 /* angle */ ); }