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annotate examples/example-trace.c @ 159:e05a792f6910

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ui: make message less clever and provide spacing field
author David Demelier <markand@malikania.fr>
date Fri, 16 Oct 2020 18:44:05 +0200
parents c3a40062acc2
children aab824406d3d
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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 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 <core/clock.h>
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20 #include <core/core.h>
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21 #include <core/event.h>
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22 #include <core/sys.h>
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23 #include <core/window.h>
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24 #include <core/painter.h>
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25 #include <core/panic.h>
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26 #include <core/trace.h>
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27 #include <core/util.h>
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28
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29 #include <ui/theme.h>
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30 #include <ui/ui.h>
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31
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32 #include <adventure/trace_hud.h>
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33
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34 #define W 1280
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35 #define H 720
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36
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37 static void
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38 init(void)
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39 {
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40 if (!core_init() || !ui_init())
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41 panic();
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42 if (!window_open("Example - Trace", W, H))
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43 panic();
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44
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45 trace_handler = trace_hud_handler;
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46 }
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47
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48 static void
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49 run(void)
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50 {
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51 struct clock clock = {0};
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52
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53 clock_start(&clock);
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54
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55 for (;;) {
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56 union event ev;
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57 unsigned int elapsed = clock_elapsed(&clock);
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58
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59 clock_start(&clock);
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60
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61 while (event_poll(&ev)) {
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62 switch (ev.type) {
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63 case EVENT_KEYDOWN:
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64 switch (ev.key.key) {
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65 case KEY_ESCAPE:
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66 trace_hud_clear();
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67 break;
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68 default:
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69 trace("keydown pressed: %d", ev.key.key);
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70 break;
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71 }
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72 break;
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73 case EVENT_CLICKDOWN:
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74 trace("click at %d,%d", ev.click.x, ev.click.y);
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75 break;
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76 case EVENT_QUIT:
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77 return;
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78 default:
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79 break;
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80 }
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81 }
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82
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83 painter_set_color(0x4f8fbaff);
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84 painter_clear();
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85 trace_hud_update(elapsed);
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86 trace_hud_draw();
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87 painter_present();
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88
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89 if ((elapsed = clock_elapsed(&clock)) < 20)
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90 delay(20 - elapsed);
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91 }
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92 }
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93
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94 static void
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95 quit(void)
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96 {
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97 window_finish();
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98 ui_finish();
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99 core_finish();
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100 }
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101
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102 int
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103 main(int argc, char **argv)
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104 {
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105 (void)argc;
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106 (void)argv;
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107
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108 init();
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109 run();
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110 quit();
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111 }
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112