gzdoom/src/dthinker.h

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/*
** dthinker.h
**
**---------------------------------------------------------------------------
** Copyright 1998-2006 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#ifndef __DTHINKER_H__
#define __DTHINKER_H__
#include <stdlib.h>
#include "dobject.h"
#include "statnums.h"
class AActor;
class player_t;
struct pspdef_s;
struct FState;
class DThinker;
class FSerializer;
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class FThinkerIterator;
enum { MAX_STATNUM = 127 };
// Doubly linked ring list of thinkers
struct FThinkerList
{
FThinkerList() : Sentinel(0) {}
void AddTail(DThinker *thinker);
DThinker *GetHead() const;
DThinker *GetTail() const;
bool IsEmpty() const;
DThinker *Sentinel;
};
class DThinker : public DObject
{
DECLARE_CLASS (DThinker, DObject)
public:
DThinker (int statnum = STAT_DEFAULT) throw();
void OnDestroy () override;
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virtual ~DThinker ();
virtual void Tick ();
void CallTick();
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virtual void PostBeginPlay (); // Called just before the first tick
virtual void CallPostBeginPlay(); // different in actor.
virtual void PostSerialize();
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size_t PropagateMark();
void ChangeStatNum (int statnum);
static void RunThinkers ();
static void RunThinkers (int statnum);
static void DestroyAllThinkers ();
static void DestroyThinkersInList(int statnum)
{
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DestroyThinkersInList(Thinkers[statnum]);
DestroyThinkersInList(FreshThinkers[statnum]);
}
static void SerializeThinkers(FSerializer &arc, bool keepPlayers);
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static void MarkRoots();
static DThinker *FirstThinker (int statnum);
static bool bSerialOverride;
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private:
enum no_link_type { NO_LINK };
DThinker(no_link_type) throw();
static void DestroyThinkersInList (FThinkerList &list);
static int TickThinkers (FThinkerList *list, FThinkerList *dest); // Returns: # of thinkers ticked
static void SaveList(FSerializer &arc, DThinker *node);
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void Remove();
static FThinkerList Thinkers[MAX_STATNUM+2]; // Current thinkers
static FThinkerList FreshThinkers[MAX_STATNUM+1]; // Newly created thinkers
friend struct FThinkerList;
friend class FThinkerIterator;
friend class DObject;
friend class FSerializer;
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DThinker *NextThinker, *PrevThinker;
};
class FThinkerIterator
{
protected:
const PClass *m_ParentType;
private:
DThinker *m_CurrThinker;
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uint8_t m_Stat;
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bool m_SearchStats;
bool m_SearchingFresh;
public:
FThinkerIterator (const PClass *type, int statnum=MAX_STATNUM+1);
FThinkerIterator (const PClass *type, int statnum, DThinker *prev);
DThinker *Next (bool exact = false);
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void Reinit ();
protected:
FThinkerIterator() {}
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};
template <class T> class TThinkerIterator : public FThinkerIterator
{
public:
TThinkerIterator (int statnum=MAX_STATNUM+1) : FThinkerIterator (RUNTIME_TEMPLATE_CLASS(T), statnum)
{
}
TThinkerIterator (int statnum, DThinker *prev) : FThinkerIterator (RUNTIME_TEMPLATE_CLASS(T), statnum, prev)
{
}
TThinkerIterator (const PClass *subclass, int statnum=MAX_STATNUM+1) : FThinkerIterator(subclass, statnum)
{
}
TThinkerIterator (FName subclass, int statnum=MAX_STATNUM+1) : FThinkerIterator(PClass::FindClass(subclass), statnum)
{
}
TThinkerIterator (ENamedName subclass, int statnum=MAX_STATNUM+1) : FThinkerIterator(PClass::FindClass(subclass), statnum)
{
}
TThinkerIterator (const char *subclass, int statnum=MAX_STATNUM+1) : FThinkerIterator(PClass::FindClass(subclass), statnum)
{
}
T *Next (bool exact = false)
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{
return static_cast<T *>(FThinkerIterator::Next (exact));
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}
};
#endif //__DTHINKER_H__