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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
* Jerremy Koot (jkoot@snes9x.com)
*
* Super FX C emulator code
* (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
* Gary Henderson.
* Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
*
* DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
* C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
* C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
*
* (c) Copyright 2014 - 2016 Daniel De Matteis. (UNDER NO CIRCUMSTANCE
* WILL COMMERCIAL RIGHTS EVER BE APPROPRIATED TO ANY PARTY)
*
* DOS port code contains the works of other authors. See headers in
* individual files.
*
* Snes9x homepage: http://www.snes9x.com
*
* Permission to use, copy, modify and distribute Snes9x in both binary and
* source form, for non-commercial purposes, is hereby granted without fee,
* providing that this license information and copyright notice appear with
* all copies and any derived work.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event shall the authors be held liable for any damages
* arising from the use of this software.
*
* Snes9x is freeware for PERSONAL USE only. Commercial users should
* seek permission of the copyright holders first. Commercial use includes
* charging money for Snes9x or software derived from Snes9x.
*
* The copyright holders request that bug fixes and improvements to the code
* should be forwarded to them so everyone can benefit from the modifications
* in future versions.
*
* Super NES and Super Nintendo Entertainment System are trademarks of
* Nintendo Co., Limited and its subsidiary companies.
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "snes9x.h"
#include "cheats.h"
#include "memmap.h"
extern SCheatData Cheat;
void S9xInitCheatData()
{
Cheat.RAM = Memory.RAM;
Cheat.SRAM = SRAM;
Cheat.FillRAM = Memory.FillRAM;
}
void S9xAddCheat(bool8 enable, bool8 save_current_value,
uint32 address, uint8 byte)
{
if (Cheat.num_cheats < sizeof(Cheat.c) / sizeof(Cheat. c [0]))
{
Cheat.c [Cheat.num_cheats].address = address;
Cheat.c [Cheat.num_cheats].byte = byte;
Cheat.c [Cheat.num_cheats].enabled = TRUE;
if (save_current_value)
{
Cheat.c [Cheat.num_cheats].saved_byte = S9xGetByte(address);
Cheat.c [Cheat.num_cheats].saved = TRUE;
}
Cheat.num_cheats++;
}
}
void S9xDeleteCheat(uint32 which1)
{
if (which1 < Cheat.num_cheats)
{
if (Cheat.c [which1].enabled)
S9xRemoveCheat(which1);
memmove(&Cheat.c [which1], &Cheat.c [which1 + 1],
sizeof(Cheat.c [0]) * (Cheat.num_cheats - which1 - 1));
Cheat.num_cheats = 0;
}
}
void S9xDeleteCheats()
{
S9xRemoveCheats();
Cheat.num_cheats = 0;
}
void S9xEnableCheat(uint32 which1)
{
if (which1 < Cheat.num_cheats && !Cheat.c [which1].enabled)
{
Cheat.c [which1].enabled = TRUE;
S9xApplyCheat(which1);
}
}
void S9xDisableCheat(uint32 which1)
{
if (which1 < Cheat.num_cheats && Cheat.c [which1].enabled)
{
S9xRemoveCheat(which1);
Cheat.c [which1].enabled = FALSE;
}
}
void S9xRemoveCheat(uint32 which1)
{
if (Cheat.c [which1].saved)
{
uint32 address = Cheat.c [which1].address;
int block = (address >> MEMMAP_SHIFT) & MEMMAP_MASK;
uint8* ptr = Memory.Map [block];
if (ptr >= (uint8*) MAP_LAST)
*(ptr + (address & 0xffff)) = Cheat.c [which1].saved_byte;
else
S9xSetByte(address, Cheat.c [which1].saved_byte);
}
}
void S9xApplyCheat(uint32 which1)
{
int block;
uint8 *ptr;
uint32 address = Cheat.c [which1].address;
if (!Cheat.c [which1].saved)
Cheat.c [which1].saved_byte = S9xGetByte(address);
block = (address >> MEMMAP_SHIFT) & MEMMAP_MASK;
ptr = Memory.Map [block];
if (ptr >= (uint8*) MAP_LAST)
*(ptr + (address & 0xffff)) = Cheat.c [which1].byte;
else
S9xSetByte(address, Cheat.c [which1].byte);
Cheat.c [which1].saved = TRUE;
}
void S9xApplyCheats()
{
if (Settings.ApplyCheats)
{
uint32 i;
for (i = 0; i < Cheat.num_cheats; i++)
if (Cheat.c [i].enabled)
S9xApplyCheat(i);
}
}
void S9xRemoveCheats()
{
uint32 i;
for (i = 0; i < Cheat.num_cheats; i++)
if (Cheat.c [i].enabled)
S9xRemoveCheat(i);
}
bool8 S9xLoadCheatFile(const char* filename)
{
Cheat.num_cheats = 0;
return (TRUE);
}
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