--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/adventure/panic_state.c	Thu Mar 12 20:22:02 2020 +0100
@@ -0,0 +1,135 @@
+/*
+ * panic_state.c -- panic state
+ *
+ * Copyright (c) 2020 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <error.h>
+#include <font.h>
+#include <painter.h>
+#include <sys.h>
+#include <texture.h>
+#include <util.h>
+#include <window.h>
+
+#include "panic_state.h"
+
+#define BACKGROUND 0x4f5070ff
+#define FOREGROUND 0xffffffff
+
+#define FONT "fonts/Lato-Regular.ttf"
+#define FONT_SZ 16
+
+struct label {
+	const char *text;
+	struct texture *texture;
+};
+
+static struct {
+	struct font *font;
+} data;
+
+static struct label headers[] = {
+	{ "An unrecoverable error occured and the game cannot continue.", NULL },
+	{ "Please report the detailed error as provided below.", NULL },
+};
+
+static struct label bottom[] = {
+	{ "Press <s> to save information and generate a core dump.", NULL },
+	{ "Press <q> to quit without saving information.", NULL }
+};
+
+static void
+enter(void)
+{
+}
+
+static void
+handle(const union event *ev)
+{
+	(void)ev;
+}
+
+static void
+generate(struct label labels[], size_t labelsz)
+{
+	for (size_t i = 0; i < labelsz; ++i) {
+		if (!labels[i].texture) {
+			labels[i].texture = font_render(data.font, labels[i].text, FOREGROUND);
+
+			if (!labels[i].texture)
+				error_fatal();
+		}
+	}
+}
+
+static void
+update(unsigned int ticks)
+{
+	(void)ticks;
+
+	generate(headers, NELEM(headers));
+	generate(bottom, NELEM(bottom));
+}
+
+static void
+draw(void)
+{
+	int y = 10;
+
+	painter_set_target(NULL);
+	painter_set_color(BACKGROUND);
+	painter_clear();
+
+	/* Header. */
+	for (size_t i = 0; i < NELEM(headers); ++i) {
+		texture_draw(headers[i].texture, 10, y);
+		y += texture_height(headers[i].texture) + 2;
+	}
+
+	/* Bottom. */
+	y = window_height() - 10;
+	y -= texture_height(bottom[0].texture);
+
+	for (size_t i = 0; i < NELEM(bottom); ++i) {
+		texture_draw(bottom[i].texture, 10, y);
+		y -= texture_height(bottom[i].texture) + 2;
+	}
+}
+
+static void
+leave(void)
+{
+}
+
+struct state panic_state = {
+	.enter = enter,
+	.handle = handle,
+	.update = update,
+	.draw = draw,
+	.leave = leave
+};
+
+void
+panic_state_init(void)
+{
+	/*
+	 * If the panic state can not be loaded we're unable to show any
+	 * useful information to the screen so as last resort print them
+	 * on the console.
+	 */
+	if (!(data.font = font_openf(sys_datapath(FONT), FONT_SZ)))
+		error_fatal();
+}