src/game/ConfusedMovementGenerator.cpp

   1 /*
   2  * Copyright (C) 2005-2010 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
  35     Map const* map = unit.GetBaseMap();
  36
  37     i_nextMove = 1;
  38
  39     bool is_water_ok, is_land_ok;
  40     _InitSpecific(unit, is_water_ok, is_land_ok);
  41
  42     for(unsigned int idx=0; idx < MAX_CONF_WAYPOINTS+1; ++idx)
  43     {
  44         const float wanderX=wander_distance*rand_norm_f() - wander_distance/2;
  45         const float wanderY=wander_distance*rand_norm_f() - wander_distance/2;
  46
  47         i_waypoints[idx][0] = x + wanderX;
  48         i_waypoints[idx][1] = y + wanderY;
  49
  50         // prevent invalid coordinates generation
  51         MaNGOS::NormalizeMapCoord(i_waypoints[idx][0]);
  52         MaNGOS::NormalizeMapCoord(i_waypoints[idx][1]);
  53
  54         bool is_water = map->IsInWater(i_waypoints[idx][0],i_waypoints[idx][1],z);
  55         // if generated wrong path just ignore
  56         if ((is_water && !is_water_ok) || (!is_water && !is_land_ok))
  57         {
  58             i_waypoints[idx][0] = idx > 0 ? i_waypoints[idx-1][0] : x;
  59             i_waypoints[idx][1] = idx > 0 ? i_waypoints[idx-1][1] : y;
  60         }
  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.addUnitState(UNIT_STAT_CONFUSED|UNIT_STAT_CONFUSED_MOVE);
  68 }
  69
  70 template<>
  71 void
  72 ConfusedMovementGenerator<Creature>::_InitSpecific(Creature &creature, bool &is_water_ok, bool &is_land_ok)
  73 {
  74     creature.RemoveSplineFlag(SPLINEFLAG_WALKMODE);
  75
  76     is_water_ok = creature.canSwim();
  77     is_land_ok  = creature.canWalk();
  78 }
  79
  80 template<>
  81 void
  82 ConfusedMovementGenerator<Player>::_InitSpecific(Player &, bool &is_water_ok, bool &is_land_ok)
  83 {
  84     is_water_ok = true;
  85     is_land_ok  = true;
  86 }
  87
  88 template<class T>
  89 void ConfusedMovementGenerator<T>::Interrupt(T &unit)
  90 {
  91     // confused state still applied while movegen disabled
  92     unit.clearUnitState(UNIT_STAT_CONFUSED_MOVE);
  93 }
  94
  95 template<class T>
  96 void ConfusedMovementGenerator<T>::Reset(T &unit)
  97 {
  98     i_nextMove = 1;
  99     i_nextMoveTime.Reset(0);
 100     i_destinationHolder.ResetUpdate();
 101     unit.StopMoving();
 102     unit.addUnitState(UNIT_STAT_CONFUSED|UNIT_STAT_CONFUSED_MOVE);
 103 }
 104
 105 template<class T>
 106 bool ConfusedMovementGenerator<T>::Update(T &unit, const uint32 &diff)
 107 {
 108     if(!&unit)
 109         return true;
 110
 111     // ignore in case other no reaction state
 112     if (unit.hasUnitState(UNIT_STAT_CAN_NOT_REACT & ~UNIT_STAT_CONFUSED))
 113         return true;
 114
 115     if (i_nextMoveTime.Passed())
 116     {
 117         // currently moving, update location
 118         unit.addUnitState(UNIT_STAT_CONFUSED_MOVE);
 119         Traveller<T> traveller(unit);
 120         if (i_destinationHolder.UpdateTraveller(traveller, diff, false))
 121         {
 122             if (!IsActive(unit))                            // force stop processing (movement can move out active zone with cleanup movegens list)
 123                 return true;                                // not expire now, but already lost
 124
 125             if (i_destinationHolder.HasArrived())
 126             {
 127                 // arrived, stop and wait a bit
 128                 unit.StopMoving();
 129
 130                 i_nextMove = urand(1,MAX_CONF_WAYPOINTS);
 131                 i_nextMoveTime.Reset(urand(0, 1500-1));     // TODO: check the minimum reset time, should be probably higher
 132             }
 133         }
 134     }
 135     else
 136     {
 137         // waiting for next move
 138         i_nextMoveTime.Update(diff);
 139         if( i_nextMoveTime.Passed() )
 140         {
 141             // start moving
 142             unit.addUnitState(UNIT_STAT_CONFUSED_MOVE);
 143             assert( i_nextMove <= MAX_CONF_WAYPOINTS );
 144             const float x = i_waypoints[i_nextMove][0];
 145             const float y = i_waypoints[i_nextMove][1];
 146             const float z = i_waypoints[i_nextMove][2];
 147             Traveller<T> traveller(unit);
 148             i_destinationHolder.SetDestination(traveller, x, y, z);
 149         }
 150     }
 151     return true;
 152 }
 153
 154 template<>
 155 void ConfusedMovementGenerator<Player>::Finalize(Player &unit)
 156 {
 157     unit.clearUnitState(UNIT_STAT_CONFUSED|UNIT_STAT_CONFUSED_MOVE);
 158 }
 159
 160 template<>
 161 void ConfusedMovementGenerator<Creature>::Finalize(Creature &unit)
 162 {
 163     unit.clearUnitState(UNIT_STAT_CONFUSED|UNIT_STAT_CONFUSED_MOVE);
 164     unit.AddSplineFlag(SPLINEFLAG_WALKMODE);
 165 }
 166
 167 template void ConfusedMovementGenerator<Player>::Initialize(Player &player);
 168 template void ConfusedMovementGenerator<Creature>::Initialize(Creature &creature);
 169 template void ConfusedMovementGenerator<Player>::Interrupt(Player &player);
 170 template void ConfusedMovementGenerator<Creature>::Interrupt(Creature &creature);
 171 template void ConfusedMovementGenerator<Player>::Reset(Player &player);
 172 template void ConfusedMovementGenerator<Creature>::Reset(Creature &creature);
 173 template bool ConfusedMovementGenerator<Player>::Update(Player &player, const uint32 &diff);
 174 template bool ConfusedMovementGenerator<Creature>::Update(Creature &creature, const uint32 &diff);