110 lines
4.6 KiB
C++
110 lines
4.6 KiB
C++
//
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// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2011-2015 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_TRACK_SECTOR_HPP
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#define HEADER_TRACK_SECTOR_HPP
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#include "utils/vec3.hpp"
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class BareNetworkString;
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class Track;
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/** This object keeps track of which sector an object is on. A sector is
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* actually just the graph node (it's called sector to better distinguish
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* the graph node from say xml node and scene node).
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* An object that has a track sector can determine how far away it is from
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* the start line, how far away it is from the center driveline. If the
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* object is not actually on part of the quad graph, it will determine the
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* closest sector it is to, and set a flag (!isOnRoad).
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* This object will also keep track on the last valid sector an object was
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* on, which is used to reset a kart in case of a rescue.
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*/
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class TrackSector
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{
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private:
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/** The graph node the object is on. */
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int m_current_graph_node;
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/** The index of the estimated valid graph node. Used for distance. */
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int m_estimated_valid_graph_node;
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/** The index of the last valid graph node. Used for rescue */
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int m_last_valid_graph_node;
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/** The coordinates of this object on the track, i.e. how far from
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* the start of the track, and how far to the left or right
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* of the center driveline. */
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Vec3 m_current_track_coords;
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Vec3 m_estimated_valid_track_coords;
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Vec3 m_latest_valid_track_coords;
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/** True if the object is on the road (driveline), or not. */
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bool m_on_road;
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int m_last_triggered_checkline;
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public:
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TrackSector();
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void reset();
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void rescue();
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void update(const Vec3 &xyz, bool ignore_vertical = false);
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float getRelativeDistanceToCenter() const;
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// ------------------------------------------------------------------------
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/** Returns how far the the object is from the start line. */
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float getDistanceFromStart(bool account_for_checklines, bool strict=false) const
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{
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if (account_for_checklines && strict)
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return m_latest_valid_track_coords.getZ();
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else if (account_for_checklines)
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return m_estimated_valid_track_coords.getZ();
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else
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return m_current_track_coords.getZ();
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}
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// ------------------------------------------------------------------------
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/** Returns the distance to the centre driveline. */
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float getDistanceToCenter() const { return m_current_track_coords.getX(); }
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// ------------------------------------------------------------------------
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/** Returns the current graph node. */
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int getCurrentGraphNode() const {return m_current_graph_node;}
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// ------------------------------------------------------------------------
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/** Returns if this object is on the road (driveline). */
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bool isOnRoad() const { return m_on_road; }
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// ------------------------------------------------------------------------
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void setLastTriggeredCheckline(int i) { m_last_triggered_checkline = i; }
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// ------------------------------------------------------------------------
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int getLastTriggeredCheckline() const
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{ return m_last_triggered_checkline; }
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// ------------------------------------------------------------------------
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int getLastValidGraphNode() const { return m_last_valid_graph_node; }
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// ------------------------------------------------------------------------
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void saveState(BareNetworkString* buffer) const;
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// ------------------------------------------------------------------------
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void rewindTo(BareNetworkString* buffer);
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// ------------------------------------------------------------------------
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void saveCompleteState(BareNetworkString* bns);
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// ------------------------------------------------------------------------
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void restoreCompleteState(const BareNetworkString& b);
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}; // TrackSector
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#endif
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