--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libmlk-rpg/mlk/rpg/battle-state-ai.c	Sat Oct 15 21:24:17 2022 +0200
@@ -0,0 +1,92 @@
+/*
+ * battle-state-ai.c -- battle state (enemy is playing)
+ *
+ * Copyright (c) 2020-2022 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 <mlk/core/alloc.h>
+
+#include "battle-state-ai.h"
+#include "battle-state.h"
+#include "battle.h"
+#include "character.h"
+
+static int
+update(struct battle_state *st, struct battle *bt, unsigned int ticks)
+{
+	(void)st;
+	(void)ticks;
+
+	battle_state_ai_update(bt);
+
+	return 0;
+}
+
+static void
+draw(const struct battle_state *st, const struct battle *bt)
+{
+	(void)st;
+
+	battle_state_ai_draw(bt);
+}
+
+static void
+finish(struct battle_state *st, struct battle *bt)
+{
+	(void)bt;
+
+	free(st);
+}
+
+void
+battle_state_ai_update(struct battle *bt)
+{
+	assert(battle_ok(bt));
+
+	struct character *ch = battle_current(bt)->ch;
+
+	/*
+	 * Immediately invoke the enemy exec strategy and put the battle state
+	 * to check.
+	 */
+	character_exec(ch, bt);
+}
+
+void
+battle_state_ai_draw(const struct battle *bt)
+{
+	assert(battle_ok(bt));
+
+	battle_draw_component(bt, BATTLE_COMPONENT_ALL);
+}
+
+void
+battle_state_ai(struct battle *bt)
+{
+	assert(bt);
+
+	struct battle_state *self;
+
+	self = alloc_new0(sizeof (*self));
+	self->data = bt;
+	self->update = update;
+	self->draw = draw;
+	self->finish = finish;
+
+	battle_switch(bt, self);
+}