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https://github.com/dborth/snes9xgx.git
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81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
/****************************************************************************
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* Snes9x Nintendo Wii/Gamecube Port
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*
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* Tantric 2008-2010
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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 "port.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 "filebrowser.h"
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extern SCheatData Cheat;
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/****************************************************************************
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* LoadCheatFile
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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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static bool LoadCheatFile (int length)
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{
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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 || (length - offset) < 28)
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break;
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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 = 0; // cheats always off
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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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memcpy (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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Cheat.num_cheats++;
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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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WiiSetupCheats()
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{
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memset(Cheat.c, 0, sizeof(Cheat.c));
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Cheat.num_cheats = 0;
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char filepath[1024];
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int offset = 0;
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if(!MakeFilePath(filepath, FILE_CHEAT))
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return;
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AllocSaveBuffer();
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offset = LoadFile(filepath, SILENT);
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// load cheat file if present
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if(offset > 0)
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LoadCheatFile (offset);
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FreeSaveBuffer ();
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}
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