756c8ff797
Based on the work of @stfx in commit: https://github.com/cmangos/mangos-classic/commit/48a84fb
240 lines
7.6 KiB
C++
240 lines
7.6 KiB
C++
/**
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* MaNGOS is a full featured server for World of Warcraft, supporting
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* the following clients: 1.12.x, 2.4.3, 3.3.5a, 4.3.4a and 5.4.8
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*
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* Copyright (C) 2005-2017 MaNGOS project <https://getmangos.eu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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*
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* World of Warcraft, and all World of Warcraft or Warcraft art, images,
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* and lore are copyrighted by Blizzard Entertainment, Inc.
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*/
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#include "Creature.h"
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#include "CreatureAI.h"
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#include "FleeingMovementGenerator.h"
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#include "ObjectAccessor.h"
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#include "movement/MoveSplineInit.h"
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#include "movement/MoveSpline.h"
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#include "PathFinder.h"
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#define MIN_QUIET_DISTANCE 28.0f
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#define MAX_QUIET_DISTANCE 43.0f
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template<class T>
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void FleeingMovementGenerator<T>::_setTargetLocation(T& owner)
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{
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// ignore in case other no reaction state
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if (owner.hasUnitState((UNIT_STAT_CAN_NOT_REACT | UNIT_STAT_NOT_MOVE) & ~UNIT_STAT_FLEEING))
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{ return; }
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float x, y, z;
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if (!_getPoint(owner, x, y, z))
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{
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// random point not found recheck later
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i_nextCheckTime.Reset(50);
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return;
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}
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owner.addUnitState(UNIT_STAT_FLEEING_MOVE);
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PathFinder path(&owner);
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path.setPathLengthLimit(30.0f);
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path.calculate(x, y, z);
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if (path.getPathType() & PATHFIND_NOPATH)
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{
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// path not found recheck later
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i_nextCheckTime.Reset(50);
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return;
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}
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Movement::MoveSplineInit init(owner);
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init.MovebyPath(path.getPath());
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init.SetWalk(false);
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int32 traveltime = init.Launch();
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i_nextCheckTime.Reset(traveltime + urand(800, 1500));
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}
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template<class T>
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bool FleeingMovementGenerator<T>::_getPoint(T& owner, float& x, float& y, float& z)
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{
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float dist_from_caster, angle_to_caster;
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if (Unit* fright = ObjectAccessor::GetUnit(owner, i_frightGuid))
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{
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dist_from_caster = fright->GetDistance(&owner);
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if (dist_from_caster > 0.2f)
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{ angle_to_caster = fright->GetAngle(&owner); }
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else
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{ angle_to_caster = frand(0, 2 * M_PI_F); }
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}
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else
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{
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dist_from_caster = 0.0f;
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angle_to_caster = frand(0, 2 * M_PI_F);
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}
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float dist, angle;
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if (dist_from_caster < MIN_QUIET_DISTANCE)
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{
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dist = frand(0.4f, 1.3f) * (MIN_QUIET_DISTANCE - dist_from_caster);
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angle = angle_to_caster + frand(-M_PI_F / 8, M_PI_F / 8);
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}
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else if (dist_from_caster > MAX_QUIET_DISTANCE)
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{
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dist = frand(0.4f, 1.0f) * (MAX_QUIET_DISTANCE - MIN_QUIET_DISTANCE);
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angle = -angle_to_caster + frand(-M_PI_F / 4, M_PI_F / 4);
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}
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else // we are inside quiet range
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{
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dist = frand(0.6f, 1.2f) * (MAX_QUIET_DISTANCE - MIN_QUIET_DISTANCE);
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angle = frand(0, 2 * M_PI_F);
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}
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float curr_x, curr_y, curr_z;
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owner.GetPosition(curr_x, curr_y, curr_z);
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x = curr_x + dist * cos(angle);
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y = curr_y + dist * sin(angle);
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z = curr_z + 0.5f;
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// try to fix z
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if (!owner.GetMap()->GetHeightInRange(x, y, z))
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return false;
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if (owner.GetTypeId() == TYPEID_PLAYER)
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{
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// check any collision
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float testZ = z + 0.5f; // needed to avoid some false positive hit detection of terrain or passable little object
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if (owner.GetMap()->GetHitPosition(curr_x, curr_y, curr_z + 0.5f, x, y, testZ, -0.1f))
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{
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z = testZ;
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if (!owner.GetMap()->GetHeightInRange(x, y, z))
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return false;
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}
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}
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return true;
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}
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template<class T>
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void FleeingMovementGenerator<T>::Initialize(T& owner)
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{
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owner.addUnitState(UNIT_STAT_FLEEING | UNIT_STAT_FLEEING_MOVE);
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owner.StopMoving();
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if (owner.GetTypeId() == TYPEID_UNIT)
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{
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((Creature&) owner).SetWalk(false, false);
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owner.SetTargetGuid(ObjectGuid());
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}
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_setTargetLocation(owner);
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}
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template<>
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void FleeingMovementGenerator<Player>::Finalize(Player& owner)
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{
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owner.clearUnitState(UNIT_STAT_FLEEING | UNIT_STAT_FLEEING_MOVE);
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owner.StopMoving();
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}
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template<>
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void FleeingMovementGenerator<Creature>::Finalize(Creature& owner)
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{
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owner.SetWalk(!owner.hasUnitState(UNIT_STAT_RUNNING_STATE), false);
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owner.clearUnitState(UNIT_STAT_FLEEING | UNIT_STAT_FLEEING_MOVE);
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}
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template<class T>
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void FleeingMovementGenerator<T>::Interrupt(T& owner)
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{
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owner.InterruptMoving();
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// flee state still applied while movegen disabled
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owner.clearUnitState(UNIT_STAT_FLEEING_MOVE);
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}
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template<class T>
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void FleeingMovementGenerator<T>::Reset(T& owner)
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{
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Initialize(owner);
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}
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template<class T>
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bool FleeingMovementGenerator<T>::Update(T& owner, const uint32& time_diff)
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{
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if (!&owner || !owner.IsAlive())
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{ return false; }
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// ignore in case other no reaction state
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if (owner.hasUnitState((UNIT_STAT_CAN_NOT_REACT | UNIT_STAT_NOT_MOVE) & ~UNIT_STAT_FLEEING))
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{
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owner.clearUnitState(UNIT_STAT_FLEEING_MOVE);
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return true;
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}
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i_nextCheckTime.Update(time_diff);
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if (i_nextCheckTime.Passed() && owner.movespline->Finalized())
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{ _setTargetLocation(owner); }
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return true;
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}
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template void FleeingMovementGenerator<Player>::Initialize(Player&);
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template void FleeingMovementGenerator<Creature>::Initialize(Creature&);
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template bool FleeingMovementGenerator<Player>::_getPoint(Player&, float&, float&, float&);
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template bool FleeingMovementGenerator<Creature>::_getPoint(Creature&, float&, float&, float&);
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template void FleeingMovementGenerator<Player>::_setTargetLocation(Player&);
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template void FleeingMovementGenerator<Creature>::_setTargetLocation(Creature&);
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template void FleeingMovementGenerator<Player>::Interrupt(Player&);
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template void FleeingMovementGenerator<Creature>::Interrupt(Creature&);
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template void FleeingMovementGenerator<Player>::Reset(Player&);
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template void FleeingMovementGenerator<Creature>::Reset(Creature&);
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template bool FleeingMovementGenerator<Player>::Update(Player&, const uint32&);
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template bool FleeingMovementGenerator<Creature>::Update(Creature&, const uint32&);
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void TimedFleeingMovementGenerator::Finalize(Unit& owner)
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{
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owner.clearUnitState(UNIT_STAT_FLEEING | UNIT_STAT_FLEEING_MOVE);
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if (Unit* victim = owner.getVictim())
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{
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if (owner.IsAlive())
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{
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owner.AttackStop(true);
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((Creature*)&owner)->AI()->AttackStart(victim);
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}
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}
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}
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bool TimedFleeingMovementGenerator::Update(Unit& owner, const uint32& time_diff)
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{
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if (!owner.IsAlive())
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{ return false; }
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// ignore in case other no reaction state
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if (owner.hasUnitState((UNIT_STAT_CAN_NOT_REACT | UNIT_STAT_NOT_MOVE) & ~UNIT_STAT_FLEEING))
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{
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owner.clearUnitState(UNIT_STAT_FLEEING_MOVE);
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return true;
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}
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i_totalFleeTime.Update(time_diff);
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if (i_totalFleeTime.Passed())
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{ return false; }
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// This calls grant-parent Update method hiden by FleeingMovementGenerator::Update(Creature &, const uint32 &) version
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// This is done instead of casting Unit& to Creature& and call parent method, then we can use Unit directly
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return MovementGeneratorMedium< Creature, FleeingMovementGenerator<Creature> >::Update(owner, time_diff);
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}
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