// $Id$
-//
+//
// SuperTux Path
// Copyright (C) 2005 Philipp <balinor@pnxs.de>
// Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
+// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-//
+//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
#ifndef __PATH_HPP__
#define __PATH_HPP__
-#include <string>
-#include <list>
-#include <map>
-
+#include <vector>
#include "math/vector.hpp"
-#include "game_object.hpp"
#include "lisp/lisp.hpp"
+#include "serializable.hpp"
-
-/**
- * Helper class that stores an individual node of a Path
- */
-class PathNode
+class Path : public Serializable
{
public:
- Vector position; /**< position (in pixels) of this node */
- float time; /**< time (in seconds) to get to this node */
-};
-
-
-/**
- * Path an object can travel along. Made up of multiple nodes of type PathNode.
- */
-class Path : public GameObject
-{
-public:
- Path(const lisp::Lisp& reader);
+ Path();
~Path();
- virtual void update(float elapsed_time);
- virtual void draw(DrawingContext& context);
+ void read(const lisp::Lisp& reader);
+ void write(lisp::Writer& writer);
- const Vector& GetPosition();
- const Vector& GetLastMovement();
+ Vector get_base() const;
- // WARNING: returns NULL if not found !
- static Path* GetByName(const std::string& name);
+ /**
+ * Helper class that stores an individual node of a Path
+ */
+ class Node
+ {
+ public:
+ Vector position; /**< the position of this node */
+ float time; /**< time (in seconds) to get from this node to next node */
+ };
-private:
- std::string name; /**< name this path can be referenced with, stored in PathRegistry */
- bool circular; /**< true: start with the first node once the last one has been reached. false: path will stop at last node */
- bool forward; /**< true: travel to nodes in the order they were defined. false: inverse order */
- std::vector<PathNode> pathNodes; /**< list of nodes that make up this path */
+ std::vector<Node> nodes;
- Vector position; /**< current position */
- Vector velocity; /**< current velocity */
- Vector last_movement; /**< amount of pixels we moved in the last call to update */
+private:
+ friend class PathWalker;
- int destinationNode; /**< current destination Node */
- float timeToGo; /**< seconds until we arrive at the destination */
+ enum WalkMode {
+ // moves from first to last path node and stops
+ ONE_SHOT,
+ // moves from first to last node then in reverse order back to first
+ PING_PONG,
+ // moves from last node back to the first node
+ CIRCULAR
+ };
- static std::map<std::string,Path*> registry;
+ WalkMode mode;
};
#endif