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annotate src/walksprite.c @ 49:a8c7db56ccb0

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core: backed out changeset 55869b5e4761 We don't need properties because we will generate them in the map.
author David Demelier <markand@malikania.fr>
date Fri, 17 Jan 2020 12:09:30 +0100
parents b815621df3e3
children
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3996f873a54b core: implement walksprite, closes #2455
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1 /*
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2 * walksprite.c -- sprite designed for walking entities
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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 #include <string.h>
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21
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22 #include "walksprite.h"
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23 #include "sprite.h"
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24
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25 void
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26 walksprite_init(struct walksprite *ws, struct sprite *sprite, unsigned int delay)
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27 {
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28 assert(ws);
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29 assert(sprite);
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30
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31 memset(ws, 0, sizeof (struct walksprite));
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32 ws->sprite = sprite;
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33 ws->delay = delay;
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34 }
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35
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36 void
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37 walksprite_update(struct walksprite *ws, unsigned int ticks)
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38 {
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39 assert(ws);
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40
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41 ws->elapsed += ticks;
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42
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43 if (ws->elapsed >= ws->delay) {
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44 ws->index += 1;
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45
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46 if (ws->index >= ws->sprite->ncols)
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47 ws->index = 0;
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48
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49 ws->elapsed = 0;
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50 }
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51 }
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52
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53 void
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54 walksprite_draw(struct walksprite *ws, unsigned int orientation, int x, int y)
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55 {
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56 assert(ws);
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57 assert(orientation < 8);
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58
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59 sprite_draw(ws->sprite, orientation, ws->index, x, y);
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60 }