src/game/Path.h

   1 /*
   2  * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef MANGOSSERVER_PATH_H
  20 #define MANGOSSERVER_PATH_H
  21
  22 #include "Common.h"
  23 #include <vector>
  24
  25 class Path
  26 {
  27     public:
  28         struct PathNode
  29         {
  30             float x,y,z;
  31         };
  32
  33         void SetLength(const unsigned int sz)
  34         {
  35             i_nodes.resize( sz );
  36         }
  37
  38         unsigned int Size() const { return i_nodes.size(); }
  39         bool Empty() const { return i_nodes.empty(); }
  40         void Resize(unsigned int sz) { i_nodes.resize(sz); }
  41         void Clear(void) { i_nodes.clear(); }
  42         PathNode const* GetNodes(uint32 start = 0) const { return &i_nodes[start]; }
  43         float GetTotalLength() const { return GetTotalLength(0,Size()); }
  44         float GetTotalLength(uint32 start, uint32 end) const
  45         {
  46             float len = 0, xd, yd, zd;
  47             for(unsigned int idx=start+1; idx < end; ++idx)
  48             {
  49                 xd = i_nodes[ idx ].x - i_nodes[ idx-1 ].x;
  50                 yd = i_nodes[ idx ].y - i_nodes[ idx-1 ].y;
  51                 zd = i_nodes[ idx ].z - i_nodes[ idx-1 ].z;
  52                 len += sqrtf( xd*xd + yd*yd + zd*zd );
  53             }
  54             return len;
  55         }
  56
  57         float GetPassedLength(uint32 curnode, float x, float y, float z)
  58         {
  59             float len = 0, xd, yd, zd;
  60             for(unsigned int idx=1; idx < curnode; ++idx)
  61             {
  62                 xd = i_nodes[ idx ].x - i_nodes[ idx-1 ].x;
  63                 yd = i_nodes[ idx ].y - i_nodes[ idx-1 ].y;
  64                 zd = i_nodes[ idx ].z - i_nodes[ idx-1 ].z;
  65                 len += sqrtf( xd*xd + yd*yd + zd*zd );
  66             }
  67
  68             if(curnode > 0)
  69             {
  70                 xd = x - i_nodes[curnode-1].x;
  71                 yd = y - i_nodes[curnode-1].y;
  72                 zd = z - i_nodes[curnode-1].z;
  73                 len += sqrtf( xd*xd + yd*yd + zd*zd );
  74             }
  75
  76             return len;
  77         }
  78
  79         PathNode& operator[](const unsigned int idx) { return i_nodes[idx]; }
  80         const PathNode& operator()(const unsigned int idx) const { return i_nodes[idx]; }
  81
  82     protected:
  83         std::vector<PathNode> i_nodes;
  84 };
  85 #endif