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comparison libadventure/adventure/state/panic.c @ 162:629f55f3961e

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core: rework states
author David Demelier <markand@malikania.fr>
date Sun, 18 Oct 2020 12:01:59 +0200
parents libadventure/adventure/panic_state.c@c577c15df07f
children 6992085d47fd
comparison
equal deleted inserted replaced
161:31d7f23c0588 162:629f55f3961e
1 /*
2 * panic_state.c -- panic state
3 *
4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <assert.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <stdnoreturn.h>
23 #include <string.h>
24
25 #include <core/error.h>
26 #include <core/event.h>
27 #include <core/font.h>
28 #include <core/game.h>
29 #include <core/painter.h>
30 #include <core/panic.h>
31 #include <core/state.h>
32 #include <core/sys.h>
33 #include <core/texture.h>
34 #include <core/util.h>
35 #include <core/window.h>
36
37 #include <ui/align.h>
38 #include <ui/theme.h>
39
40 #include <rpg/map_state.h>
41
42 #include "panic.h"
43
44 #define BACKGROUND 0x4f5070ff
45 #define FOREGROUND 0xffffffff
46
47 #define OUT "molko-adventure.txt"
48
49 struct view {
50 struct {
51 struct texture tex;
52 int x;
53 int y;
54 } texts[4];
55 };
56
57 static noreturn void
58 die(const char *fmt, ...)
59 {
60 assert(fmt);
61
62 va_list ap;
63
64 va_start(ap, fmt);
65 fprintf(stderr, "abort: ");
66 vfprintf(stderr, fmt, ap);
67 va_end(ap);
68 abort();
69 exit(1);
70 }
71
72 static noreturn void
73 stop(void)
74 {
75 die("%s", error());
76 }
77
78 static void
79 dump(void)
80 {
81 FILE *fp;
82
83 if ((fp = fopen(OUT, "w"))) {
84 /* TODO: add more info here. */
85 fprintf(fp, "Molko's Adventure crash dump report\n");
86 fclose(fp);
87 }
88
89 abort();
90 }
91
92 static struct view *
93 init(void)
94 {
95 struct theme *theme;
96 struct view *view;
97 struct font font;
98
99 theme = theme_default();
100 view = ecalloc(1, sizeof (*view));
101
102 /* Generate the texts. */
103 font_shallow(&font, theme->fonts[THEME_FONT_INTERFACE]);
104 font.style = FONT_STYLE_ANTIALIASED,
105 font.color = FOREGROUND;
106
107 if (!font_render(&font, &view->texts[0].tex, "An unrecoverable error occured and the game cannot continue.") ||
108 !font_render(&font, &view->texts[1].tex, "Please report the detailed error as provided below.") ||
109 !font_render(&font, &view->texts[2].tex, "Press <s> to save information and generate a core dump.") ||
110 !font_render(&font, &view->texts[3].tex, "Press <q> to quit without saving information."))
111 die("%s", error());
112
113 /* All align x the same. */
114 for (size_t i = 0; i < NELEM(view->texts); ++i)
115 view->texts[i].x = theme->padding;
116
117 /* Header (0-1). */
118 view->texts[0].y = theme->padding;
119 view->texts[1].y = view->texts[0].y + view->texts[0].tex.h + theme->padding;
120
121 /* Footer. (2-3). */
122 view->texts[3].y = window.h - view->texts[2].tex.h - theme->padding;
123 view->texts[2].y = view->texts[3].y - view->texts[3].tex.h - theme->padding;
124
125 return view;
126 }
127
128 static void
129 handle_keydown(const struct event_key *ev)
130 {
131 assert(ev);
132
133 switch (ev->key) {
134 case KEY_q:
135 game_quit();
136 break;
137 case KEY_s:
138 dump();
139 break;
140 default:
141 break;
142 }
143 }
144
145 static void
146 start(struct state *state)
147 {
148 (void)state;
149
150 /* We remove the panic handler to avoid infinite recursion. */
151 panic_handler = stop;
152 }
153
154 static void
155 handle(struct state *state, const union event *ev)
156 {
157 assert(ev);
158
159 (void)state;
160
161 switch (ev->type) {
162 case EVENT_KEYDOWN:
163 handle_keydown(&ev->key);
164 break;
165 default:
166 break;
167 }
168 }
169
170 static void
171 draw(struct state *state)
172 {
173 struct theme *theme = theme_default();
174 struct view *view = state->data;
175 struct texture tex;
176 struct font font;
177 int x, y;
178
179 painter_set_color(BACKGROUND);
180 painter_clear();
181
182 for (size_t i = 0; i < NELEM(view->texts); ++i)
183 texture_draw(&view->texts[i].tex, view->texts[i].x, view->texts[i].y);
184
185 /* The error is only available here. */
186 font_shallow(&font, theme->fonts[THEME_FONT_INTERFACE]);
187 font.color = FOREGROUND;
188 font.style = FONT_STYLE_ANTIALIASED;
189
190 if (!font_render(&font, &tex, error()))
191 die("%s\n", error());
192
193 align(ALIGN_LEFT, &x, &y, tex.w, tex.h, 0, 0, window.w, window.h);
194
195 texture_draw(&tex, x + theme->padding, y);
196 texture_finish(&tex);
197 }
198
199 static void
200 finish(struct state *state)
201 {
202 struct view *view = state->data;
203
204 if (!view)
205 return;
206
207 for (size_t i = 0; i < NELEM(view->texts); ++i)
208 texture_finish(&view->texts[i].tex);
209
210 free(view);
211 memset(state, 0, sizeof (*state));
212 }
213
214 void
215 panic_state(struct state *state)
216 {
217 assert(state);
218
219 memset(state, 0, sizeof (*state));
220 state->data = init();
221 state->start = start;
222 state->handle = handle;
223 state->draw = draw;
224 state->finish = finish;
225 }