mirror of
https://github.com/dborth/snes9xgx.git
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105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
/****************************************************************************
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* Snes9x 1.51 Nintendo Wii/Gamecube Port
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*
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* Tantric August 2008
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*
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* cheatmgr.cpp
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*
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* Cheat handling
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***************************************************************************/
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#include "memmap.h"
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#include "cheats.h"
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#include "snes9xGX.h"
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#include "fileop.h"
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#include "filesel.h"
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#include "smbop.h"
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#include "menudraw.h"
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extern SCheatData Cheat;
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/****************************************************************************
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* NGCLoadCheatFile
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*
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* Loads cheat file from save buffer
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* Custom version of S9xLoadCheatFile()
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***************************************************************************/
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bool NGCLoadCheatFile (int length)
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{
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Cheat.num_cheats = 0;
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uint8 data [28];
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int offset = 0;
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while (offset < length)
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{
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if(Cheat.num_cheats < MAX_CHEATS)
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{
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memcpy (data, savebuffer+offset, 28);
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offset += 28;
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Cheat.c [Cheat.num_cheats].enabled = (data [0] & 4) == 0;
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Cheat.c [Cheat.num_cheats].byte = data [1];
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Cheat.c [Cheat.num_cheats].address = data [2] | (data [3] << 8) | (data [4] << 16);
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Cheat.c [Cheat.num_cheats].saved_byte = data [5];
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Cheat.c [Cheat.num_cheats].saved = (data [0] & 8) != 0;
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memmove (Cheat.c [Cheat.num_cheats].name, &data [8], 20);
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Cheat.c [Cheat.num_cheats++].name [20] = 0;
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}
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}
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return true;
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}
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/****************************************************************************
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* SetupCheats
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*
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* Erases any prexisting cheats, loads cheats from a cheat file
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* Called when a ROM is first loaded
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***************************************************************************/
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void
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SetupCheats()
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{
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char filepath[1024];
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int offset = 0;
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S9xInitCheatData ();
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S9xDeleteCheats ();
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int method = GCSettings.SaveMethod;
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if(method == METHOD_AUTO)
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method = autoSaveMethod();
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AllocSaveBuffer();
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if(method == METHOD_SD || method == METHOD_USB)
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{
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if(ChangeFATInterface(method, NOTSILENT))
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{
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sprintf (filepath, "%s/%s/%s.cht", ROOTFATDIR, GCSettings.CheatFolder, Memory.ROMFilename);
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offset = LoadBufferFromFAT (filepath, SILENT);
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}
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}
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else if(method == METHOD_SMB)
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{
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sprintf (filepath, "%s/%s.cht", GCSettings.CheatFolder, Memory.ROMFilename);
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offset = LoadBufferFromSMB (filepath, SILENT);
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}
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// load cheat file if present
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if(offset > 0)
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{
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if(NGCLoadCheatFile (offset))
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{
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// disable all cheats loaded from the file
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for (uint16 i = 0; i < Cheat.num_cheats; i++)
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S9xDisableCheat(i);
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}
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}
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FreeSaveBuffer ();
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}
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