Mercurial > molko
annotate libmlk-adventure/adventure/trace_hud.c @ 243:71b3b7036de7
misc: lot of cleanups,
- prefix libraries with libmlk,
- move assets from source directories closes #2520,
- prefix header guards closes #2519
author | David Demelier <markand@malikania.fr> |
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date | Sat, 28 Nov 2020 22:37:30 +0100 |
parents | libadventure/adventure/trace_hud.c@a43e79d489ea |
children | 8d41e317c07b |
rev | line source |
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141
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1 /* |
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2 * trace_hud.c -- on screen hud |
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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 <stdio.h> |
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21 #include <string.h> |
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22 |
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23 #include <core/font.h> |
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24 #include <core/trace.h> |
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25 #include <core/window.h> |
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26 |
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27 #include <ui/label.h> |
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28 #include <ui/theme.h> |
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29 |
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30 #include "trace_hud.h" |
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31 |
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32 #define LINES_MAX (4) |
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33 #define THEME(t) ((t) ? (t) : theme_default()) |
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34 |
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35 static struct { |
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36 char lines[LINES_MAX + 1][TRACE_LINE_MAX]; |
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37 unsigned int elapsed; |
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38 } data; |
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39 |
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40 struct trace_hud trace_hud = { |
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41 .timeout = TRACE_HUD_TIMEOUT_DEFAULT |
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42 }; |
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43 |
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44 void |
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45 trace_hud_handler(const char *str) |
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46 { |
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47 assert(str); |
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48 |
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49 /* 1.Try to find an empty line. */ |
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50 for (size_t i = 0; i < LINES_MAX; ++i) { |
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51 if (data.lines[i][0] == '\0') { |
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52 snprintf(data.lines[i], sizeof (data.lines[i]), "%s", str); |
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53 return; |
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54 } |
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55 } |
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56 |
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57 /* 2. All lines are full, put in last one and move other. */ |
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58 memmove(&data.lines[0], &data.lines[1], sizeof (data.lines[0]) * LINES_MAX - 1); |
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59 snprintf(data.lines[LINES_MAX - 1], sizeof (data.lines[0]), "%s", str); |
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60 |
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61 /* 3. Reset elapsed time now. */ |
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62 data.elapsed = 0; |
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63 } |
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64 |
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65 void |
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66 trace_hud_update(unsigned int ticks) |
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67 { |
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68 data.elapsed += ticks; |
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69 |
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70 /* |
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71 * We have an empty line in the data.lines at LINES_MAX, so we simply so |
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72 * to move the whole array. |
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73 * |
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74 * [0] = "abc" |
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75 * [1] = "def" |
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76 * [2] = "xyz" |
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77 * [3] = "zef" |
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78 * [n] = "ldkf" |
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79 * [LINES_MAX + 1] = "\0" |
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80 */ |
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81 if (data.elapsed >= trace_hud.timeout) { |
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82 data.elapsed = 0; |
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83 memmove(&data.lines[0], &data.lines[1], sizeof (data.lines[0]) * LINES_MAX); |
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84 } |
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85 } |
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86 |
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87 void |
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88 trace_hud_draw(void) |
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89 { |
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90 struct theme *th; |
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91 int x, y; |
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92 |
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93 th = THEME(trace_hud.theme); |
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94 x = th->padding; |
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95 y = th->padding; |
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96 |
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97 for (int i = 0; i < LINES_MAX && data.lines[i][0]; ++i) { |
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98 label_draw(&(struct label) { |
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99 .x = x, |
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100 .y = y, |
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101 .text = data.lines[i], |
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102 .theme = th, |
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103 .flags = LABEL_FLAGS_SHADOW |
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104 }); |
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105 |
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106 y += font_height(th->fonts[THEME_FONT_INTERFACE]); |
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107 y += th->padding; |
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108 } |
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109 } |
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110 |
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111 void |
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112 trace_hud_clear(void) |
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113 { |
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114 memset(&data, 0, sizeof (data)); |
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115 } |