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annotate src/adventure/panic_state.c @ 91:8bfb90e85b28

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adventure: add more details in panic
author David Demelier <markand@malikania.fr>
date Sat, 21 Mar 2020 14:39:43 +0100
parents 30baadb6f6a2
children ed72843a7194
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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 <error.h>
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24 #include <event.h>
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25 #include <font.h>
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26 #include <game.h>
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27 #include <painter.h>
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28 #include <sys.h>
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29 #include <texture.h>
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30 #include <util.h>
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31 #include <window.h>
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32 #include <map_state.h>
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33
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34 #include "panic_state.h"
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35
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36 #define BACKGROUND 0x4f5070ff
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37 #define FOREGROUND 0xffffffff
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38
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39 #define FONT "fonts/Lato-Regular.ttf"
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40 #define FONT_SZ 16
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41
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42 #define PADDING 20
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43
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44 #define OUT "molko-adventure.txt"
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45
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46 struct label {
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47 const char *text;
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48 struct texture *texture;
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49 };
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50
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51 static struct {
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52 struct font *font;
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53 } data;
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54
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55 static struct label headers[] = {
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56 { "An unrecoverable error occured and the game cannot continue.", NULL },
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57 { "Please report the detailed error as provided below.", NULL },
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58 };
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59
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60 static struct label bottom[] = {
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61 { "Press <s> to save information and generate a core dump.", NULL },
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62 { "Press <q> to quit without saving information.", NULL }
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63 };
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64
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65 static struct label lerror;
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66
89
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67 static void
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68 enter(void)
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69 {
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70 }
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71
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72 static void
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73 dump(void)
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74 {
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75 FILE *fp;
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76
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77 if (!(fp = fopen(OUT, "w")))
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78 goto dump;
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79
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80 /* Print various information. */
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81 fprintf(fp, "Molko's Adventure crash dump report\n");
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82 fprintf(fp, "== state map dump ==\n");
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83 fprintf(fp, "map:\n");
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84 fprintf(fp, " w %u\n", map_state_data.map.w);
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85 fprintf(fp, " h %u\n", map_state_data.map.h);
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86 fprintf(fp, "player:\n");
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87 fprintf(fp, " x: %u\n", map_state_data.player.x);
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88 fprintf(fp, " y: %u\n", map_state_data.player.y);
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89 fprintf(fp, "view:\n");
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90 fprintf(fp, " w: %u\n", map_state_data.view.w);
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91 fprintf(fp, " h: %u\n", map_state_data.view.h);
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92 fprintf(fp, " x: %u\n", map_state_data.view.x);
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93 fprintf(fp, " y: %u\n", map_state_data.view.y);
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94
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95 dump:
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96 if (fp)
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97 fclose(fp);
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98
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99 abort();
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100 }
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101
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102 static void
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103 handle_keydown(const struct event_key *ev)
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104 {
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105 assert(ev);
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106
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107 switch (ev->key) {
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108 case KEY_q:
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109 game_quit();
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110 break;
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111 case KEY_s:
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112 dump();
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113 break;
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114 default:
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115 break;
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116 }
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117 }
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118
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119 static void
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120 handle(const union event *ev)
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121 {
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122 assert(ev);
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123
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124 switch (ev->type) {
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125 case EVENT_KEYDOWN:
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126 handle_keydown(&ev->key);
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127 break;
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128 default:
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129 break;
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130 }
89
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131 }
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132
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133 static void
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134 generate(struct label labels[], size_t labelsz)
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135 {
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136 assert(labels);
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137
91
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138 for (size_t i = 0; i < labelsz; ++i) {
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139 if (labels[i].texture)
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140 continue;
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141
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142 labels[i].texture = font_render(data.font, labels[i].text, FOREGROUND);
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143
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144 if (!labels[i].texture)
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145 error_fatal();
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146 }
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147 }
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148
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149 static void
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150 update(unsigned int ticks)
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151 {
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152 (void)ticks;
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153
91
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154 lerror.text = error();
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155
89
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156 generate(headers, NELEM(headers));
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157 generate(&lerror, 1);
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158 generate(bottom, NELEM(bottom));
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159 }
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160
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161 static void
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162 draw(void)
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163 {
91
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164 int y = PADDING;
89
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165
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166 painter_set_target(NULL);
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167 painter_set_color(BACKGROUND);
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168 painter_clear();
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169
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170 /* Header. */
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171 for (size_t i = 0; i < NELEM(headers); ++i) {
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172 texture_draw(headers[i].texture, PADDING, y);
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173 y += texture_height(headers[i].texture) + 2;
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174 }
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175
91
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176 /* Error message. */
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177 texture_draw(lerror.texture, PADDING, y + PADDING);
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178
89
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179 /* Bottom. */
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180 y = window_height() - PADDING;
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181 y -= texture_height(bottom[0].texture);
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182
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183 for (size_t i = 0; i < NELEM(bottom); ++i) {
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184 texture_draw(bottom[i].texture, PADDING, y);
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185 y -= texture_height(bottom[i].texture) + 2;
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186 }
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187 }
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188
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189 static void
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190 leave(void)
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191 {
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192 }
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193
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194 struct state panic_state = {
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195 .enter = enter,
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196 .handle = handle,
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197 .update = update,
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198 .draw = draw,
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199 .leave = leave
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200 };
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201
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202 void
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203 panic_state_init(void)
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204 {
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205 /*
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206 * If the panic state can not be loaded we're unable to show any
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207 * useful information to the screen so as last resort print them
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208 * on the console.
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209 */
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210 if (!(data.font = font_openf(sys_datapath(FONT), FONT_SZ)))
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211 error_fatal();
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212 }