--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/librpg/rpg/battle-state-closing.c	Sat Nov 07 16:00:39 2020 +0100
@@ -0,0 +1,108 @@
+/*
+ * battle-state-closing.c -- battle state (closing)
+ *
+ * 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 <assert.h>
+#include <stdlib.h>
+
+#include <core/alloc.h>
+#include <core/painter.h>
+#include <core/panic.h>
+#include <core/texture.h>
+#include <core/window.h>
+
+#include "battle.h"
+#include "battle-state-closing.h"
+
+struct closing {
+	struct battle_state self;
+	struct texture texture;
+	unsigned int alpha;
+	unsigned int elapsed;
+};
+
+
+static bool
+update(struct battle_state *st, struct battle *bt, unsigned int ticks)
+{
+	(void)bt;
+
+	struct closing *closing = st->data;
+
+	closing->elapsed += ticks;
+
+	if (closing->elapsed > 8) {
+		closing->elapsed = 0;
+
+		if (closing->alpha == 255)
+			return true;
+
+		closing->alpha += 5;
+		texture_set_alpha_mod(&closing->texture, closing->alpha);
+	}
+
+	return false;
+}
+
+static void
+draw(const struct battle_state *st, const struct battle *bt)
+{
+	(void)bt;
+
+	const struct closing *closing = st->data;
+
+	texture_draw(&closing->texture, 0, 0);
+}
+
+static void
+finish(struct battle_state *st, struct battle *bt)
+{
+	(void)bt;
+
+	struct closing *closing = st->data;
+
+	texture_finish(&closing->texture);
+	free(closing);
+}
+
+void
+battle_state_closing(struct battle *bt)
+{
+	assert(bt);
+
+	struct closing *closing;
+
+	if (!(closing = alloc_zero(1, sizeof (*closing))) ||
+	    !texture_new(&closing->texture, window.w, window.h))
+		panic();
+
+	PAINTER_BEGIN(&closing->texture);
+	texture_set_blend_mode(&closing->texture, TEXTURE_BLEND_BLEND);
+	painter_set_color(0x000000ff);
+	painter_clear();
+	painter_draw_rectangle(0, 0, window.w, window.h);
+	PAINTER_END();
+
+	texture_set_alpha_mod(&closing->texture, 0);
+
+	closing->self.data = closing;
+	closing->self.update = update;
+	closing->self.draw = draw;
+	closing->self.finish = finish;
+
+	battle_switch(bt, &closing->self);
+}