69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
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// $Id$
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//
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// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2011 Joerg Henrichs
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#ifndef HEADER_RUBBER_BALL_HPP
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#define HEADER_RUBBER_BALL_HPP
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#include "items/flyable.hpp"
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class Kart;
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class QuadGraph;
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/**
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* \ingroup items
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*/
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class RubberBall: public Flyable
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{
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private:
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/** A pointer to the target kart. */
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const Kart *m_target;
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/** The current quad this ball is aiming at. */
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int m_current_graph_node;
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/** The previous distance to the graph node we are aiming
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* at atm. If the distance increases, we have passed the
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* point we aimed at and have to aim at the next point. */
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float m_distance_along_track;
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/** True if the ball just crossed the start line, i.e. its
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* distance changed from close to length of track in the
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* previous time step to a bit over zero now. */
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bool m_wrapped_around;
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/** Once the ball is close enough, it will aim for the kart. If the
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* kart should be able to then increase the distance to the ball,
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* the ball will be removed and the kart escapes. This boolean is
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* used to keep track of the state of this ball. */
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bool m_aiming_at_target;
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/** For convenience keep a pointer to the quad graph. */
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QuadGraph *m_quad_graph;
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void computeTarget();
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void determineTargetCoordinates(float dt, Vec3 *aim_xyz);
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public:
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RubberBall (Kart* kart);
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static void init(const XMLNode &node, scene::IMesh *bowling);
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virtual void update (float dt);
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}; // RubberBall
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#endif
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