src/game/MovementGenerator.h

   1 /*
   2  * Copyright (C) 2005-2009 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 MANGOS_MOVEMENTGENERATOR_H
  20 #define MANGOS_MOVEMENTGENERATOR_H
  21
  22 #include "Platform/Define.h"
  23 #include "Policies/Singleton.h"
  24 #include "Dynamic/ObjectRegistry.h"
  25 #include "Dynamic/FactoryHolder.h"
  26 #include "Common.h"
  27 #include "MotionMaster.h"
  28
  29 class Unit;
  30
  31 class MANGOS_DLL_SPEC MovementGenerator
  32 {
  33     public:
  34         virtual ~MovementGenerator();
  35
  36         virtual void Initialize(Unit &) = 0;
  37         virtual void Finalize(Unit &) = 0;
  38
  39         virtual void Reset(Unit &) = 0;
  40
  41         virtual bool Update(Unit &, const uint32 &time_diff) = 0;
  42
  43         virtual MovementGeneratorType GetMovementGeneratorType() = 0;
  44
  45         virtual void unitSpeedChanged() { }
  46
  47         virtual bool GetDestination(float& /*x*/, float& /*y*/, float& /*z*/) const { return false; }
  48 };
  49
  50 template<class T, class D>
  51 class MANGOS_DLL_SPEC MovementGeneratorMedium : public MovementGenerator
  52 {
  53     public:
  54         void Initialize(Unit &u)
  55         {
  56             //u->AssertIsType<T>();
  57             (static_cast<D*>(this))->Initialize(*((T*)&u));
  58         }
  59         void Finalize(Unit &u)
  60         {
  61             //u->AssertIsType<T>();
  62             (static_cast<D*>(this))->Finalize(*((T*)&u));
  63         }
  64         void Reset(Unit &u)
  65         {
  66             //u->AssertIsType<T>();
  67             (static_cast<D*>(this))->Reset(*((T*)&u));
  68         }
  69         bool Update(Unit &u, const uint32 &time_diff)
  70         {
  71             //u->AssertIsType<T>();
  72             return (static_cast<D*>(this))->Update(*((T*)&u), time_diff);
  73         }
  74     public:
  75         // will not link if not overridden in the generators
  76         void Initialize(T &u);
  77         void Finalize(T &u);
  78         void Reset(T &u);
  79         bool Update(T &u, const uint32 &time_diff);
  80 };
  81
  82 struct SelectableMovement : public FactoryHolder<MovementGenerator,MovementGeneratorType>
  83 {
  84     SelectableMovement(MovementGeneratorType mgt) : FactoryHolder<MovementGenerator,MovementGeneratorType>(mgt) {}
  85 };
  86
  87 template<class REAL_MOVEMENT>
  88 struct MovementGeneratorFactory : public SelectableMovement
  89 {
  90     MovementGeneratorFactory(MovementGeneratorType mgt) : SelectableMovement(mgt) {}
  91
  92     MovementGenerator* Create(void *) const;
  93 };
  94
  95 typedef FactoryHolder<MovementGenerator,MovementGeneratorType> MovementGeneratorCreator;
  96 typedef FactoryHolder<MovementGenerator,MovementGeneratorType>::FactoryHolderRegistry MovementGeneratorRegistry;
  97 typedef FactoryHolder<MovementGenerator,MovementGeneratorType>::FactoryHolderRepository MovementGeneratorRepository;
  98 #endif