common/p_mobj.h

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// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// $Id: p_mobj.h 2117 2011-02-22 20:33:04Z mike $
//
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 2006-2010 by The Odamex Team.
//
// 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.
//
// DESCRIPTION:
//   Map Objects, MObj, definition and handling.
//
//-----------------------------------------------------------------------------


#ifndef __PMOBJ_H__
#define __PMOBJ_H__

#define REMOVECORPSESTIC TICRATE*80

//-----------------------------------------------------------------------------
//
// denis - superior NetIDHandler
//
// Very simple, very fast.
// Does not iterate when releasing a netid.
// Does not iterate when obtaining a netid unless all pooled ids are taken.
// (in which case does one allocation and does not iterate more than 
//  MEMPOOLSIZE times)
// Only downside is that it won't detect double-releasing, but shouldn't be 
// a problem.
//
// Thanks to [Dash|RD] for noticing the efficiency problem, hard work on other 
// versions of this class and giving me this great idea.
//
//-----------------------------------------------------------------------------

#define MAX_NETID 0xFFFF

class NetIDHandler
{
        private:

        int *allocation;

        size_t NumAllocated;
        size_t NumUsed;

        const size_t ChunkSize;

        public:

        NetIDHandler(size_t chunk_size = 256)
                : allocation(0), NumAllocated(0), NumUsed(0), ChunkSize(chunk_size)
        {}

        ~NetIDHandler()
        {
                M_Free(allocation);
        }

        int ObtainNetID()
        {
                if(NumUsed >= NumAllocated)
                {
                        if(NumAllocated >= MAX_NETID - 1)
                                I_Error("Exceeded maximum number of netids");

                        int OldAllocated = NumAllocated;
                        NumAllocated += ChunkSize;

                        if(NumAllocated >= MAX_NETID - 1)
                                NumAllocated = MAX_NETID - 1;

                        allocation = (int *)Realloc(allocation, NumAllocated*sizeof(int));

                        for(size_t i = OldAllocated; i < NumAllocated; i++)
                                allocation[i] = i + 1;
                }

                return allocation[NumUsed++];
        }

        void ReleaseNetID(int NetID)
        {
                if(!NumUsed || !NetID)
                        I_Error("Released a non-existant netid %d", NetID);

                allocation[--NumUsed] = NetID;
        }
};

extern NetIDHandler ServerNetID;

bool P_SetMobjState(AActor *mobj, statenum_t state);
void P_XYMovement(AActor *mo);
void P_ZMovement(AActor *mo);
void PlayerLandedOnThing(AActor *mo, AActor *onmobj); // [CG] Used to be 'static'
void P_NightmareRespawn(AActor *mo);
void P_SpawnPuff(fixed_t x, fixed_t y, fixed_t z, angle_t dir, int updown);
void P_SpawnBlood(fixed_t x, fixed_t y, fixed_t z, angle_t dir, int damage);
bool P_CheckMissileSpawn(AActor* th);
AActor* P_SpawnMissile(AActor *source, AActor *dest, mobjtype_t type);
void P_SpawnPlayerMissile(AActor *source, mobjtype_t type);

// [ML] From EE
int P_ThingInfoHeight(mobjinfo_t *mi);

#endif