Mercurial > molko
annotate 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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1 /* |
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2 * animation.c -- basic animations |
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3 * |
314 | 4 * Copyright (c) 2020-2021 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 "drawable.h" |
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23 #include "animation.h" |
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24 #include "sprite.h" |
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25 |
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26 static int |
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27 update(struct drawable *dw, unsigned int ticks) |
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28 { |
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29 return animation_update(dw->data, ticks); |
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30 } |
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31 |
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32 static void |
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33 draw(struct drawable *dw) |
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34 { |
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35 animation_draw(dw->data, dw->x, dw->y); |
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36 } |
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37 |
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38 void |
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39 animation_init(struct animation *an, const struct sprite *sprite, unsigned int delay) |
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40 { |
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41 assert(an); |
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42 assert(sprite); |
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43 |
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44 an->sprite = sprite; |
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45 an->row = 0; |
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46 an->column = 0; |
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47 an->delay = delay; |
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48 an->elapsed = 0; |
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49 } |
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50 |
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51 void |
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52 animation_start(struct animation *an) |
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53 { |
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54 assert(an); |
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55 |
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56 an->row = 0; |
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57 an->column = 0; |
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58 an->elapsed = 0; |
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59 } |
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60 |
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61 int |
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62 animation_completed(const struct animation *an) |
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63 { |
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64 assert(an); |
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65 |
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66 return an->elapsed >= an->delay && |
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67 an->row >= an->sprite->nrows && |
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68 an->column >= an->sprite->ncols; |
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69 } |
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70 |
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71 int |
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72 animation_update(struct animation *an, unsigned int ticks) |
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73 { |
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74 assert(an); |
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75 |
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76 an->elapsed += ticks; |
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77 |
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78 if (an->elapsed < an->delay) |
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79 return 0; |
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80 |
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81 /* Increment column first */ |
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82 if (++an->column >= an->sprite->ncols) { |
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83 /* |
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84 * Increment row, if we reach the last row it means we are |
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85 * at the last frame. |
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86 */ |
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87 if (++an->row >= an->sprite->nrows) |
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88 an->row = an->sprite->nrows; |
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89 else |
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90 an->column = an->elapsed = 0; |
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91 } else |
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92 an->elapsed = 0; |
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93 |
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94 return animation_completed(an); |
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95 } |
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96 |
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97 int |
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98 animation_draw(const struct animation *an, int x, int y) |
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99 { |
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100 assert(an); |
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101 |
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102 return sprite_draw(an->sprite, an->row, an->column, x, y); |
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103 } |
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104 |
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105 void |
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106 animation_drawable(struct animation *an, struct drawable *dw, int x, int y) |
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107 { |
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108 assert(an); |
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109 assert(dw); |
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110 |
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111 memset(dw, 0, sizeof (*dw)); |
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112 |
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113 dw->data = an; |
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114 dw->x = x - (an->sprite->cellw / 2); |
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115 dw->y = y - (an->sprite->cellh / 2); |
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116 dw->update = update; |
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117 dw->draw = draw; |
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118 |
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119 animation_start(an); |
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120 } |