Initial commit

src/pathfinder.h

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+/*
+Minetest
+Copyright (C) 2013 sapier, sapier at gmx dot net
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+/******************************************************************************/
+/* Includes                                                                   */
+/******************************************************************************/
+#include <vector>
+#include "irr_v3d.h"
+
+/******************************************************************************/
+/* Forward declarations                                                       */
+/******************************************************************************/
+
+class NodeDefManager;
+class Map;
+
+/******************************************************************************/
+/* Typedefs and macros                                                        */
+/******************************************************************************/
+
+typedef enum {
+	DIR_XP,
+	DIR_XM,
+	DIR_ZP,
+	DIR_ZM
+} PathDirections;
+
+/** List of supported algorithms */
+typedef enum {
+	PA_DIJKSTRA,           /**< Dijkstra shortest path algorithm             */
+	PA_PLAIN,            /**< A* algorithm using heuristics to find a path */
+	PA_PLAIN_NP          /**< A* algorithm without prefetching of map data */
+} PathAlgorithm;
+
+/******************************************************************************/
+/* declarations                                                               */
+/******************************************************************************/
+
+/** c wrapper function to use from scriptapi */
+std::vector<v3s16> get_path(Map *map, const NodeDefManager *ndef,
+		v3s16 source,
+		v3s16 destination,
+		unsigned int searchdistance,
+		unsigned int max_jump,
+		unsigned int max_drop,
+		PathAlgorithm algo);