--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libmlk-adventure/adventure/action/teleport.c	Fri Oct 01 20:30:00 2021 +0200
@@ -0,0 +1,124 @@
+/*
+ * teleport.c -- teleport contact
+ *
+ * Copyright (c) 2020-2021 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <core/action.h>
+#include <core/alloc.h>
+#include <core/maths.h>
+#include <core/painter.h>
+#include <core/panic.h>
+#include <core/texture.h>
+#include <core/window.h>
+
+#include <rpg/map.h>
+
+#include <adventure/molko.h>
+
+#include "teleport.h"
+
+static void
+draw(struct action *act)
+{
+	struct teleport *tp = act->data;
+
+	texture_set_blend_mode(&tp->overlay, TEXTURE_BLEND_BLEND);
+	texture_set_alpha_mod(&tp->overlay, tp->alpha);
+
+	PAINTER_BEGIN(&tp->overlay);
+	painter_set_color(0x000000ff);
+	painter_clear();
+	PAINTER_END();
+
+	texture_draw(&tp->overlay, 0, 0);
+}
+
+static int
+update_fadeout(struct action *act, unsigned int ticks)
+{
+	struct teleport *tp = act->data;
+
+	tp->elapsed += ticks;
+
+	if (tp->elapsed >= 10) {
+		if (tp->alpha >= 255) {
+			molko_teleport(tp->destination, tp->origin_x, tp->origin_y);
+			return 1;
+		}
+
+		tp->elapsed = 0;
+		tp->alpha += 5;
+	}
+
+	return 0;
+}
+
+static int
+update_touch(struct action *act, unsigned int ticks)
+{
+	(void)ticks;
+
+	struct teleport *tp  = act->data;
+	const int x          = tp->x - tp->map->player_sprite->cellw;
+	const int y          = tp->y - tp->map->player_sprite->cellh;
+	const unsigned int w = tp->w + tp->map->player_sprite->cellw;
+	const unsigned int h = tp->h + tp->map->player_sprite->cellh;
+
+	if (maths_is_boxed(x, y, w, h, tp->map->player_x, tp->map->player_y)) {
+		/* Stop movement and disable input. */
+		tp->map->player_movement = 0;
+		game.inhibit = INHIBIT_STATE_INPUT;
+
+		/*
+		 * We change our update function and add a draw function that
+		 * fade the screen out.
+		 */
+		if (texture_new(&tp->overlay, window.w, window.h) < 0)
+			panic();
+
+		act->update = update_fadeout;
+		act->draw = draw;
+	}
+
+	return 0;
+}
+
+static void
+finish(struct action *act)
+{
+	struct teleport *tp = act->data;
+
+	texture_finish(&tp->overlay);
+
+	free(act->data);
+}
+
+struct action *
+teleport_action(struct teleport *tp)
+{
+	assert(tp);
+
+	tp->action.data = tp;
+	tp->action.update = update_touch;
+	tp->action.finish = finish;
+
+	return &tp->action;
+}