//-------------------------------------------------------------------------
/*
Copyright (C) 2010 EDuke32 developers and contributors

This file is part of EDuke32.

EDuke32 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.

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.
*/
//-------------------------------------------------------------------------

#ifndef __gamevars_h__
#define __gamevars_h__

#include "gamedef.h"

// store global game definitions
enum GamevarFlags_t {
    MAXGAMEVARS        = 2048,       // must be a power of two
    MAXVARLABEL        = 26,
    GAMEVAR_PERPLAYER  = 0x00000001, // per-player variable
    GAMEVAR_PERACTOR   = 0x00000002, // per-actor variable
    GAMEVAR_USER_MASK  = (GAMEVAR_PERPLAYER|GAMEVAR_PERACTOR),
    GAMEVAR_RESET      = 0x00000008, // marks var for to default
    GAMEVAR_DEFAULT    = 0x00000100, // allow override
    GAMEVAR_SECRET     = 0x00000200, // don't dump...
    GAMEVAR_NODEFAULT  = 0x00000400, // don't reset on actor spawn
    GAMEVAR_SYSTEM     = 0x00000800, // cannot change mode flags...(only default value)
    GAMEVAR_READONLY   = 0x00001000, // values are read-only (no setvar allowed)
    GAMEVAR_INTPTR     = 0x00002000, // plValues is a pointer to an int32_t
    GAMEVAR_SHORTPTR   = 0x00008000, // plValues is a pointer to a short
    GAMEVAR_CHARPTR    = 0x00010000, // plValues is a pointer to a char
    GAMEVAR_PTR_MASK   = (GAMEVAR_INTPTR|GAMEVAR_SHORTPTR|GAMEVAR_CHARPTR),
    GAMEVAR_NORESET    = 0x00020000, // var values are not reset when restoring map state
    GAMEVAR_SPECIAL    = 0x00040000, // flag for structure member shortcut vars
    GAMEVAR_NOMULTI    = 0x00080000, // don't attach to multiplayer packets
    GAMEVAR_NONGLOBAL  = (GAMEVAR_INTPTR|GAMEVAR_SHORTPTR|GAMEVAR_CHARPTR|GAMEVAR_SPECIAL|MAXGAMEVARS<<1),
};

enum GamearrayFlags_t {
    MAXGAMEARRAYS      = (MAXGAMEVARS>>2), // must be lower than MAXGAMEVARS
    MAXARRAYLABEL      = MAXVARLABEL,
    GAMEARRAY_NORMAL   = 0,
    GAMEARRAY_NORESET  = 0x00000001,
};

#pragma pack(push,1)
typedef struct {
    union {
        intptr_t lValue;
        intptr_t *plValues;     // array of values when 'per-player', or 'per-actor'
    } val;
    intptr_t lDefault;
    uintptr_t dwFlags;
    char *szLabel;
} gamevar_t;

typedef struct {
    char *szLabel;
    int32_t *plValues;     // array of values
    intptr_t size;
    intptr_t bReset;
} gamearray_t;
#pragma pack(pop)

extern gamevar_t aGameVars[MAXGAMEVARS];
extern gamearray_t aGameArrays[MAXGAMEARRAYS];
extern int32_t g_gameVarCount;
extern int32_t g_gameArrayCount;

int32_t __fastcall Gv_GetVar(register int32_t id,register int32_t iActor,register int32_t iPlayer);
int32_t __fastcall Gv_GetVarX(register int32_t id);
int32_t Gv_GetVarByLabel(const char *szGameLabel,int32_t lDefault,int32_t iActor,int32_t iPlayer);
int32_t Gv_NewArray(const char *pszLabel,int32_t asize);
int32_t Gv_NewVar(const char *pszLabel,int32_t lValue,uint32_t dwFlags);
int32_t Gv_ReadSave(int32_t fil,int32_t newbehav);
void __fastcall A_ResetVars(register int32_t iActor);
void __fastcall Gv_SetVar(register int32_t id,register int32_t lValue,register int32_t iActor,register int32_t iPlayer);
void __fastcall Gv_SetVarX(register int32_t id,register int32_t lValue);
void G_FreeMapState(int32_t mapnum);
void Gv_DumpValues(void);
void Gv_Init(void);
void Gv_InitWeaponPointers(void);
void Gv_RefreshPointers(void);
void Gv_RefreshPointers(void);
void Gv_ResetSystemDefaults(void);
void Gv_ResetVars(void);
void Gv_WriteSave(FILE *fil,int32_t newbehav);

static inline void __fastcall Gv_AddVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue += lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] += lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] += lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) += (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) += (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) +=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_SubVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue -= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] -= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] -= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) -= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) -= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) -=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_MulVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue *= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] *= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] *= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) *= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) *= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) *=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_DivVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue /= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] /= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] /= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) /= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) /= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) /=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_ModVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue %= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] %= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] %= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) %= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) %= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) %=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_AndVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue &= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] &= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] &= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) &= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) &= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) &=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_XorVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue ^= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] ^= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] ^= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) ^= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) ^= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) ^=(uint8_t)lValue;
        return;
    }
}

static inline void __fastcall Gv_OrVar(register int32_t id, register int32_t lValue)
{
    switch (aGameVars[id].dwFlags & (GAMEVAR_USER_MASK|GAMEVAR_PTR_MASK))
    {
    default:
        aGameVars[id].val.lValue |= lValue;
        return;
    case GAMEVAR_PERPLAYER:
        if ((unsigned)vm.g_p > MAXPLAYERS-1) return;
        aGameVars[id].val.plValues[vm.g_p] |= lValue;
        return;
    case GAMEVAR_PERACTOR:
        if ((unsigned)vm.g_i > MAXSPRITES-1) return;
        aGameVars[id].val.plValues[vm.g_i] |= lValue;
        return;
    case GAMEVAR_INTPTR:
        *((int32_t *)aGameVars[id].val.lValue) |= (int32_t)lValue;
        return;
    case GAMEVAR_SHORTPTR:
        *((int16_t *)aGameVars[id].val.lValue) |= (int16_t)lValue;
        return;
    case GAMEVAR_CHARPTR:
        *((uint8_t *)aGameVars[id].val.lValue) |=(uint8_t)lValue;
        return;
    }
}

#endif