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annotate src/core/sprite.c @ 59:52792b863ff7

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misc: separate core from game
author David Demelier <markand@malikania.fr>
date Tue, 21 Jan 2020 12:42:33 +0100
parents src/sprite.c@b815621df3e3
children ed72843a7194
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1 /*
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2 * sprite.c -- image sprites
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3 *
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4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20
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21 #include "sprite.h"
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22 #include "texture_p.h"
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23 #include "texture.h"
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24
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25 void
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26 sprite_init(struct sprite *sprite,
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27 struct texture *tex,
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28 unsigned int cellw,
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29 unsigned int cellh)
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30 {
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31 int w = 0;
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32 int h = 0;
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33
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34 assert(sprite);
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35 assert(tex);
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36
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37 /* TODO: use texture_get_size */
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38 SDL_QueryTexture(tex->handle, NULL, NULL, &w, &h);
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39
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40 sprite->texture = tex;
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41 sprite->cellw = cellw;
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42 sprite->cellh = cellh;
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43 sprite->nrows = h / cellh;
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44 sprite->ncols = w / cellw;
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45 }
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46
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47 void
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48 sprite_draw(struct sprite *sprite, unsigned int r, unsigned int c, int x, int y)
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49 {
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50 assert(sprite);
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51
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52 texture_draw_ex(
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53 sprite->texture,
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54 c * sprite->cellw, /* src y */
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55 r * sprite->cellh, /* src x */
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56 sprite->cellw, /* src width */
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57 sprite->cellh, /* src height */
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58 x, /* dst x */
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59 y, /* dst y */
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60 sprite->cellw, /* dst width */
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61 sprite->cellh, /* dst height */
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62 0.0 /* angle */
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63 );
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64 }