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annotate libadventure/adventure/panic_state.c @ 150:9733d379be89

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ui: add a standalone align() function
author David Demelier <markand@malikania.fr>
date Thu, 15 Oct 2020 13:13:38 +0200
parents c577c15df07f
children
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1 /*
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2 * panic_state.c -- panic state
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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 <stdlib.h>
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22
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23 #include <core/error.h>
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24 #include <core/event.h>
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25 #include <core/font.h>
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26 #include <core/game.h>
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27 #include <core/painter.h>
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28 #include <core/sys.h>
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29 #include <core/texture.h>
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30 #include <core/util.h>
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31 #include <core/window.h>
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32
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33 #include <rpg/map_state.h>
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34
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35 #include <adventure/assets/fonts/lato.h>
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36
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37 #include "panic_state.h"
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38
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39 #define BACKGROUND 0x4f5070ff
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40 #define FOREGROUND 0xffffffff
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41
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42 #define SIZE 16
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43 #define PADDING 20
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44
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45 #define OUT "molko-adventure.txt"
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46
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47 struct label {
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48 const char *text;
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49 struct texture texture;
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50 };
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51
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52 static struct {
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53 struct font font;
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54 } data;
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55
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56 static struct label headers[] = {
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57 { .text = "An unrecoverable error occured and the game cannot continue." },
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58 { .text = "Please report the detailed error as provided below." },
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59 };
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60
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61 static struct label bottom[] = {
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62 { .text = "Press <s> to save information and generate a core dump." },
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63 { .text = "Press <q> to quit without saving information." }
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64 };
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65
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66 static struct label lerror;
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67
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68 static void
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69 die(const char *fmt, ...)
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70 {
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71 assert(fmt);
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72
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73 va_list ap;
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74
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75 va_start(ap, fmt);
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76 fprintf(stderr, "abort: ");
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77 vfprintf(stderr, fmt, ap);
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78 va_end(ap);
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79 exit(1);
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80 }
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81
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82 static void
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83 enter(void)
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84 {
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85 }
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86
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87 static void
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88 dump(void)
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89 {
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90 FILE *fp;
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91
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92 if (!(fp = fopen(OUT, "w")))
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93 goto dump;
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94
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95 /* Print various information. */
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96 fprintf(fp, "Molko's Adventure crash dump report\n");
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97 fprintf(fp, "== state map dump ==\n");
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98 fprintf(fp, "map:\n");
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99 fprintf(fp, " w %u\n", map_state_data.map.data.w);
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100 fprintf(fp, " h %u\n", map_state_data.map.data.h);
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101 fprintf(fp, "player:\n");
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102 fprintf(fp, " x: %u\n", map_state_data.player.x);
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103 fprintf(fp, " y: %u\n", map_state_data.player.y);
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104 fprintf(fp, "view:\n");
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105 fprintf(fp, " w: %u\n", map_state_data.view.w);
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106 fprintf(fp, " h: %u\n", map_state_data.view.h);
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107 fprintf(fp, " x: %u\n", map_state_data.view.x);
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108 fprintf(fp, " y: %u\n", map_state_data.view.y);
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109
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110 dump:
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111 if (fp)
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112 fclose(fp);
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113
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114 abort();
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115 }
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116
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117 static void
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118 handle_keydown(const struct event_key *ev)
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119 {
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120 assert(ev);
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121
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122 switch (ev->key) {
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123 case KEY_q:
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124 game_quit();
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125 break;
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126 case KEY_s:
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127 dump();
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128 break;
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129 default:
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130 break;
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131 }
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132 }
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133
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134 static void
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135 handle(const union event *ev)
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136 {
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137 assert(ev);
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138
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139 switch (ev->type) {
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140 case EVENT_KEYDOWN:
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141 handle_keydown(&ev->key);
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142 break;
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143 default:
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144 break;
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145 }
89
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146 }
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147
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148 static void
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149 generate(struct label labels[], size_t labelsz)
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150 {
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151 assert(labels);
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152
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153 for (size_t i = 0; i < labelsz; ++i) {
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154 if (texture_ok(&labels[i].texture))
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155 continue;
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156
94
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157 data.font.color = FOREGROUND;
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158 font_render(&data.font, &labels[i].texture, labels[i].text);
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159
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160 if (!texture_ok(&labels[i].texture))
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161 die("%s\n", error());
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162 }
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163 }
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164
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165 static void
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166 update(unsigned int ticks)
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167 {
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168 (void)ticks;
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169
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170 lerror.text = error();
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171
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172 generate(headers, NELEM(headers));
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173 generate(&lerror, 1);
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174 generate(bottom, NELEM(bottom));
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175 }
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176
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177 static void
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178 draw(void)
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179 {
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180 int y = PADDING;
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181
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182 painter_set_target(NULL);
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183 painter_set_color(BACKGROUND);
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184 painter_clear();
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185
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186 /* Header. */
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187 for (size_t i = 0; i < NELEM(headers); ++i) {
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188 texture_draw(&headers[i].texture, PADDING, y);
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189 y += headers[i].texture.h + 2;
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190 }
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191
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192 /* Error message. */
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193 texture_draw(&lerror.texture, PADDING, y + PADDING);
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194
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195 /* Bottom. */
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196 y = window.h - PADDING;
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197 y -= bottom[0].texture.h;
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198
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199 for (size_t i = 0; i < NELEM(bottom); ++i) {
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200 texture_draw(&bottom[i].texture, PADDING, y);
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201 y -= bottom[i].texture.h + 2;
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202 }
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203 }
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204
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205 static void
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206 leave(void)
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207 {
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208 }
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209
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210 struct state panic_state = {
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211 .enter = enter,
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212 .handle = handle,
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213 .update = update,
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214 .draw = draw,
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215 .leave = leave
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216 };
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217
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218 void
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219 panic_state_init(void)
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220 {
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221 /*
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222 * If the panic state can not be loaded we're unable to show any
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223 * useful information to the screen so as last resort print them
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224 * on the console.
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225 */
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226 if (!(font_openmem(&data.font, fonts_lato, sizeof (fonts_lato), SIZE)))
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227 die("%s", error());
89
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228 }