Mercurial > molko
annotate src/libmlk-core/core/sprite.c @ 423:63ebfa352ae1
core: use err.h in font
author | David Demelier <markand@malikania.fr> |
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date | Sat, 15 Oct 2022 14:00:38 +0200 |
parents | 460c78706989 |
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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) 2020-2022 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.h" |
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23 |
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24 void |
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25 sprite_init(struct sprite *sprite, |
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26 struct texture *tex, |
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27 unsigned int cellw, |
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28 unsigned int cellh) |
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29 { |
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30 assert(sprite); |
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31 assert(tex && texture_ok(tex)); |
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32 |
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33 sprite->texture = tex; |
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34 sprite->cellw = cellw; |
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35 sprite->cellh = cellh; |
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36 sprite->nrows = tex->h / cellh; |
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37 sprite->ncols = tex->w / cellw; |
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38 } |
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39 |
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40 int |
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41 sprite_ok(const struct sprite *sprite) |
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42 { |
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43 return sprite && texture_ok(sprite->texture) && sprite->cellw != 0 && sprite->cellh != 0; |
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44 } |
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45 |
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46 int |
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47 sprite_draw(const struct sprite *sprite, unsigned int r, unsigned int c, int x, int y) |
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48 { |
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49 return sprite_scale(sprite, r, c, x, y, sprite->cellw, sprite->cellh); |
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50 } |
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51 |
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52 int |
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53 sprite_scale(const struct sprite *sprite, |
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54 unsigned int r, |
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55 unsigned int c, |
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56 int x, |
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57 int y, |
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58 unsigned int w, |
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59 unsigned int h) |
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60 { |
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61 assert(sprite_ok(sprite)); |
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62 assert(r < sprite->nrows); |
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63 assert(c < sprite->ncols); |
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64 |
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65 return texture_scale( |
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66 sprite->texture, |
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67 c * sprite->cellw, /* src y */ |
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68 r * sprite->cellh, /* src x */ |
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69 sprite->cellw, /* src width */ |
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70 sprite->cellh, /* src height */ |
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71 x, /* dst x */ |
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72 y, /* dst y */ |
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73 w, /* dst width */ |
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74 h, /* dst height */ |
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75 0.0 /* angle */ |
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76 ); |
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77 } |