src/game/ConfusedMovementGenerator.cpp

   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 #include "Creature.h"
  20 #include "MapManager.h"
  21 #include "Opcodes.h"
  22 #include "ConfusedMovementGenerator.h"
  23 #include "DestinationHolderImp.h"
  24
  25 template<class T>
  26 void
  27 ConfusedMovementGenerator<T>::Initialize(T &unit)
  28 {
  29     const float wander_distance=11;
  30     float x,y,z;
  31     x = unit.GetPositionX();
  32     y = unit.GetPositionY();
  33     z = unit.GetPositionZ();
  34     uint32 mapid=unit.GetMapId();
  35
  36     Map const* map = MapManager::Instance().GetBaseMap(mapid);
  37
  38     i_nextMove = 1;
  39
  40     bool is_water_ok, is_land_ok;
  41     _InitSpecific(unit, is_water_ok, is_land_ok);
  42
  43     for(unsigned int idx=0; idx < MAX_CONF_WAYPOINTS+1; ++idx)
  44     {
  45         const float wanderX=wander_distance*rand_norm() - wander_distance/2;
  46         const float wanderY=wander_distance*rand_norm() - wander_distance/2;
  47
  48         i_waypoints[idx][0] = x + wanderX;
  49         i_waypoints[idx][1] = y + wanderY;
  50
  51         // prevent invalid coordinates generation
  52         MaNGOS::NormalizeMapCoord(i_waypoints[idx][0]);
  53         MaNGOS::NormalizeMapCoord(i_waypoints[idx][1]);
  54
  55         bool is_water = map->IsInWater(i_waypoints[idx][0],i_waypoints[idx][1],z);
  56         // if generated wrong path just ignore
  57         if( is_water && !is_water_ok || !is_water && !is_land_ok )
  58         {
  59             i_waypoints[idx][0] = idx > 0 ? i_waypoints[idx-1][0] : x;
  60             i_waypoints[idx][1] = idx > 0 ? i_waypoints[idx-1][1] : y;
  61         }
  62         unit.UpdateGroundPositionZ(i_waypoints[idx][0],i_waypoints[idx][1],z);
  63         i_waypoints[idx][2] =  z;
  64     }
  65
  66     unit.StopMoving();
  67     unit.RemoveUnitMovementFlag(MOVEMENTFLAG_WALK_MODE);
  68     unit.addUnitState(UNIT_STAT_CONFUSED);
  69 }
  70
  71 template<>
  72 void
  73 ConfusedMovementGenerator<Creature>::_InitSpecific(Creature &creature, bool &is_water_ok, bool &is_land_ok)
  74 {
  75     is_water_ok = creature.canSwim();
  76     is_land_ok  = creature.canWalk();
  77 }
  78
  79 template<>
  80 void
  81 ConfusedMovementGenerator<Player>::_InitSpecific(Player &, bool &is_water_ok, bool &is_land_ok)
  82 {
  83     is_water_ok = true;
  84     is_land_ok  = true;
  85 }
  86
  87 template<class T>
  88 void
  89 ConfusedMovementGenerator<T>::Reset(T &unit)
  90 {
  91     i_nextMove = 1;
  92     i_nextMoveTime.Reset(0);
  93     i_destinationHolder.ResetUpdate();
  94     unit.StopMoving();
  95 }
  96
  97 template<class T>
  98 bool
  99 ConfusedMovementGenerator<T>::Update(T &unit, const uint32 &diff)
 100 {
 101     if(!&unit)
 102         return true;
 103
 104     if(unit.hasUnitState(UNIT_STAT_ROOT | UNIT_STAT_STUNNED | UNIT_STAT_DISTRACTED))
 105         return true;
 106
 107     if( i_nextMoveTime.Passed() )
 108     {
 109         // currently moving, update location
 110         Traveller<T> traveller(unit);
 111         if( i_destinationHolder.UpdateTraveller(traveller, diff, false))
 112         {
 113             if( i_destinationHolder.HasArrived())
 114             {
 115                 // arrived, stop and wait a bit
 116                 unit.StopMoving();
 117
 118                 i_nextMove = urand(1,MAX_CONF_WAYPOINTS);
 119                 i_nextMoveTime.Reset(urand(0, 1500-1));     // TODO: check the minimum reset time, should be probably higher
 120             }
 121         }
 122     }
 123     else
 124     {
 125         // waiting for next move
 126         i_nextMoveTime.Update(diff);
 127         if( i_nextMoveTime.Passed() )
 128         {
 129             // start moving
 130             assert( i_nextMove <= MAX_CONF_WAYPOINTS );
 131             const float x = i_waypoints[i_nextMove][0];
 132             const float y = i_waypoints[i_nextMove][1];
 133             const float z = i_waypoints[i_nextMove][2];
 134             Traveller<T> traveller(unit);
 135             i_destinationHolder.SetDestination(traveller, x, y, z);
 136         }
 137     }
 138     return true;
 139 }
 140
 141 template<class T>
 142 void
 143 ConfusedMovementGenerator<T>::Finalize(T &unit)
 144 {
 145     unit.clearUnitState(UNIT_STAT_CONFUSED);
 146 }
 147
 148 template void ConfusedMovementGenerator<Player>::Initialize(Player &player);
 149 template void ConfusedMovementGenerator<Creature>::Initialize(Creature &creature);
 150 template void ConfusedMovementGenerator<Player>::Finalize(Player &player);
 151 template void ConfusedMovementGenerator<Creature>::Finalize(Creature &creature);
 152 template void ConfusedMovementGenerator<Player>::Reset(Player &player);
 153 template void ConfusedMovementGenerator<Creature>::Reset(Creature &creature);
 154 template bool ConfusedMovementGenerator<Player>::Update(Player &player, const uint32 &diff);
 155 template bool ConfusedMovementGenerator<Creature>::Update(Creature &creature, const uint32 &diff);