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annotate examples/example-trace/example-trace.c @ 510:21d2c66f3521

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core: doxygenize alloc
author David Demelier <markand@malikania.fr>
date Sat, 04 Mar 2023 10:06:07 +0100
parents 7f7602bae0bd
children f45a023f6690
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1 /*
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2 * example-trace.c -- example on how to use custom trace handlers
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3 *
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4 * Copyright (c) 2020-2023 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 <mlk/core/core.h>
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20 #include <mlk/core/err.h>
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21 #include <mlk/core/event.h>
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22 #include <mlk/core/game.h>
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23 #include <mlk/core/sys.h>
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24 #include <mlk/core/window.h>
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25 #include <mlk/core/painter.h>
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26 #include <mlk/core/panic.h>
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27 #include <mlk/core/state.h>
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28 #include <mlk/core/trace.h>
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29 #include <mlk/core/util.h>
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30
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31 #include <mlk/ui/ui.h>
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32
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33 #include <mlk/example/example.h>
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34 #include <mlk/example/trace-hud.h>
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35
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36 static struct mlk_state *states[1];
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37
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38 static void
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39 init(void)
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40 {
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41 int err;
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42
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43 if ((err = mlk_example_init("example-trace")) < 0)
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44 mlk_panicf("mlk_example_init: %s", mlk_err_string(err));
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45
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46 mlk_trace_handler = mlk_trace_hud_handler;
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47 }
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49 static void
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50 handle(struct mlk_state *st, const union mlk_event *ev)
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51 {
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52 (void)st;
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53
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54 switch (ev->type) {
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55 case MLK_EVENT_KEYDOWN:
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56 switch (ev->key.key) {
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57 case MLK_KEY_ESCAPE:
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58 mlk_trace_hud_clear();
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59 break;
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60 default:
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61 mlk_tracef("keydown pressed: %d", ev->key.key);
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62 break;
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63 }
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64 break;
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65 case MLK_EVENT_CLICKDOWN:
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66 mlk_tracef("click at %d,%d", ev->click.x, ev->click.y);
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67 break;
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68 case MLK_EVENT_QUIT:
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69 mlk_game_quit();
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70 break;
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71 default:
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72 break;
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73 }
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74 }
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76 static void
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77 update(struct mlk_state *st, unsigned int ticks)
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78 {
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79 (void)st;
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80
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81 mlk_trace_hud_update(ticks);
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82 }
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83
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84 static void
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85 draw(struct mlk_state *st)
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86 {
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87 (void)st;
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88
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89 mlk_painter_set_color(MLK_EXAMPLE_BG);
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90 mlk_painter_clear();
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91 mlk_trace_hud_draw();
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92 mlk_painter_present();
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93 }
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94
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95 static void
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96 run(void)
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97 {
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98 struct mlk_state state = {
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99 .handle = handle,
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100 .update = update,
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101 .draw = draw
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102 };
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103
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104 mlk_game_init(states, MLK_UTIL_SIZE(states));
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105 mlk_game_push(&state);
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106 mlk_game_loop();
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107 }
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108
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109 static void
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110 quit(void)
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111 {
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112 mlk_example_finish();
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113 }
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114
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115 int
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116 main(int argc, char **argv)
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117 {
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118 (void)argc;
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119 (void)argv;
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120
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121 init();
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122 run();
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123 quit();
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124 }
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125