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/*
* Copyright (C) 2005-2008 MaNGOS <http://www.mangosproject.org/>
*
* Copyright (C) 2008 Trinity <http://www.trinitycore.org/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "Creature.h"
#include "MapManager.h"
#include "RandomMovementGenerator.h"
#include "Traveller.h"
#include "DestinationHolderImp.h"
#define RUNNING_CHANCE_RANDOMMV 20 //will be "1 / RUNNING_CHANCE_RANDOMMV"
template<>
bool
RandomMovementGenerator<Creature>::GetDestination(float &x, float &y, float &z) const
{
if(i_destinationHolder.HasArrived())
return false;
i_destinationHolder.GetDestination(x, y, z);
return true;
}
template<>
void
RandomMovementGenerator<Creature>::_setRandomLocation(Creature &creature)
{
float i_x,i_y,i_z,n_x,n_y,n_z,ori,dist;
creature.GetHomePosition(i_x,i_y,i_z,ori);
const float angle = 2*M_PI*rand_norm();
const float range = rand_norm()*wander_dist;
const float distX = range*cos(angle);
const float distY = range*sin(angle);
n_x = i_x + distX;
n_y = i_y + distY;
Trinity::NormalizeMapCoord(n_x);
Trinity::NormalizeMapCoord(n_y);
Map const* map = MapManager::Instance().GetBaseMap(creature.GetMapId());
switch(_InhabitType)
{
case INHABIT_AIR:
{
//don't use normalized n_x, n_y because difference is too small.. and this is random movement
dist = sqrtf(distX*distX + distY*distY);
const float distanceZ = rand_norm() * dist/2; // Limit height change
n_z = i_z + distanceZ;
float tz = map->GetHeight(n_x,n_y,n_z - 2.0f,false);
if (tz >= n_z || ground >= n_z)
return;
//creature.AddUnitMovementFlag(MOVEMENTFLAG_FLYING2);
break;
}
case INHABIT_WATER:
{
//some small creatures can swim above water level
float water = map->GetWaterLevel(n_x,n_y) - 1.8f;
float floor = map->GetHeight(n_x,n_y,i_z,false) + 0.2f;
if (water - floor < 0)
return;
float z_diff = 2 * 1.192*creature.GetDistance2d(n_x,n_y); //1.192 = tan(50)
//if(water - floor > z_diff){
n_z = z_diff*(1 - 2*rand_norm()) + creature.GetPositionZ();
n_z = n_z > water ? water : n_z;
n_z = n_z < floor ? floor : n_z;
//}else
//n_z = floor + rand_norm()*(water - floor);
//creature.AddUnitMovementFlag(MOVEMENTFLAG_SWIMMING);
break;
}
case INHABIT_GROUND:
{
dist = (distX*distX + distY*distY);
dist = dist>=100.0f ? 10.0f : sqrtf(dist); // 10.0 is the max that vmap high can check (MAX_CAN_FALL_DISTANCE)
n_z = map->GetHeight(n_x,n_y,i_z,false);
if (fabs(n_z - i_z) > dist)
{
n_z = map->GetHeight(n_x,n_y,i_z,true); // Vmap Horizontal or above
if (fabs(n_z - i_z) > dist)
{
n_z = map->GetHeight(n_x,n_y,i_z + 8.0f,true); // Vmap Higher
if (fabs(n_z - i_z) > dist)
return;
}
}
if (!irand(0,RUNNING_CHANCE_RANDOMMV))
creature.RemoveUnitMovementFlag(MOVEMENTFLAG_WALK_MODE);
else
creature.AddUnitMovementFlag(MOVEMENTFLAG_WALK_MODE);
break;
}
default:
n_z = i_z;
break;
}
Traveller<Creature> traveller(creature);
creature.SetOrientation(creature.GetAngle(n_x,n_y));
i_destinationHolder.SetDestination(traveller,n_x,n_y,n_z);
creature.addUnitState(UNIT_STAT_ROAMING);
switch(_InhabitType)
{
case INHABIT_AIR:
i_nextMoveTime.Reset(i_destinationHolder.GetTotalTravelTime());
break;
case INHABIT_WATER:
i_nextMoveTime.Reset(i_destinationHolder.GetTotalTravelTime() + urand(500,3000));
break;
default:
i_nextMoveTime.Reset(i_destinationHolder.GetTotalTravelTime() + urand(500,5000));
break;
}
}
template<>
void
RandomMovementGenerator<Creature>::Initialize(Creature &creature)
{
if(!creature.isAlive())
return;
wander_dist = creature.GetRespawnRadius();
Map const* map = MapManager::Instance().GetBaseMap(creature.GetMapId());
_InhabitType = creature.GetCreatureInfo()->InhabitType;
// Let's select only one movement type
// TODO: make this check more correct
float water;
if(_InhabitType & (INHABIT_WATER | INHABIT_AIR))
water = map->GetWaterLevel(creature.GetPositionX(),creature.GetPositionY());
if(_InhabitType & INHABIT_AIR)
{
float floor = map->GetHeight(creature.GetPositionX(),creature.GetPositionY(),creature.GetPositionZ(),true);
ground = floor > water ? floor : water;
if(ground + 2.0f < creature.GetPositionZ())
{
_InhabitType = INHABIT_AIR;
creature.addUnitState(UNIT_STAT_IN_FLIGHT);
creature.AddUnitMovementFlag(MOVEMENTFLAG_FLYING2);
i_nextMoveTime.Reset(urand(0,1000)); //to make them call _setRandomLocation not in one time
//_setRandomLocation(creature);
return;
}else
_InhabitType &= ~INHABIT_AIR;
}
if(_InhabitType & INHABIT_WATER)
{
if (water > creature.GetPositionZ()) //don't use "+2.0f" because under-water creatures already has height <= -1.9(if water level is 0)
{
_InhabitType = INHABIT_WATER;
creature.addUnitState(UNIT_STAT_IN_FLIGHT);
creature.AddUnitMovementFlag(MOVEMENTFLAG_SWIMMING);
i_nextMoveTime.Reset(urand(0,1000));
//_setRandomLocation(creature);
return;
}else
_InhabitType &= ~INHABIT_WATER;
}
if(_InhabitType & INHABIT_GROUND)
i_nextMoveTime.Reset(urand(0,1000));
//_setRandomLocation(creature);
}
template<>
void
RandomMovementGenerator<Creature>::Reset(Creature &creature)
{
Initialize(creature);
}
template<>
void
RandomMovementGenerator<Creature>::Finalize(Creature &creature){}
template<>
bool
RandomMovementGenerator<Creature>::Update(Creature &creature, const uint32 &diff)
{
if(creature.hasUnitState(UNIT_STAT_ROOT | UNIT_STAT_STUNNED | UNIT_STAT_DISTRACTED))
{
i_nextMoveTime.Update(i_nextMoveTime.GetExpiry()); // Expire the timer
creature.clearUnitState(UNIT_STAT_ROAMING);
return true;
}
i_nextMoveTime.Update(diff);
if(i_destinationHolder.HasArrived() && !creature.IsStopped() && !(_InhabitType & (INHABIT_WATER | INHABIT_AIR)))
creature.clearUnitState(UNIT_STAT_ROAMING);
if(!i_destinationHolder.HasArrived() && creature.IsStopped())
creature.addUnitState(UNIT_STAT_ROAMING);
CreatureTraveller traveller(creature);
if( i_destinationHolder.UpdateTraveller(traveller, diff, false, true) )
{
if(i_nextMoveTime.Passed())
_setRandomLocation(creature);
else if(creature.isPet() && creature.GetOwner() && creature.GetDistance(creature.GetOwner()) > PET_FOLLOW_DIST+2.5f)
{
creature.SetUnitMovementFlags(MOVEMENTFLAG_NONE);
_setRandomLocation(creature);
}
}
return true;
}
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