mirror of
https://github.com/libretro/ppsspp.git
synced 2024-11-25 01:00:01 +00:00
506 lines
13 KiB
C++
506 lines
13 KiB
C++
#include "CwCheat.h"
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#include "../Core/CoreTiming.h"
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#include "../Core/CoreParameter.h"
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#include "StringUtils.h"
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#include "Common/FileUtil.h"
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#include "Config.h"
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#include "MIPS/MIPS.h"
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#include "Core/Config.h"
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const static std::string CHEATS_DIR = "Cheats";
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static std::string activeCheatFile;
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static int CheatEvent = -1;
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static CWCheatEngine *cheatEngine;
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void hleCheat(u64 userdata, int cyclesLate);
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void trim2(std::string& str);
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void __CheatInit() {
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//Moved createFullPath to CheatInit from the constructor because it spams the log and constantly checks if exists. In here, only checks once.
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std::string gameTitle = g_paramSFO.GetValueString("DISC_ID") + " - " + g_paramSFO.GetValueString("TITLE");
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if (gameTitle.find("™")!= std::string::npos) {
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gameTitle.erase (gameTitle.find("™"), std::string::npos);
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}
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while (gameTitle.find("/")!= std::string::npos) {
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gameTitle.replace (gameTitle.find("/"),1," ");
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}
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activeCheatFile = CHEATS_DIR + "/" + gameTitle +".ini";
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File::CreateFullPath(CHEATS_DIR);
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if (g_Config.bEnableCheats) {
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if (!File::Exists(activeCheatFile)) {
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File::CreateEmptyFile(activeCheatFile);
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}
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cheatEngine = new CWCheatEngine();
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cheatEngine->CreateCodeList();
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g_Config.bReloadCheats = false;
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CheatEvent = CoreTiming::RegisterEvent("CheatEvent", &hleCheat);
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CoreTiming::ScheduleEvent(msToCycles(77), CheatEvent, 0);
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}
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}
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void __CheatShutdown() {
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if (cheatEngine != 0) {
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cheatEngine->Exit();
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delete cheatEngine;
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cheatEngine = 0;
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}
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}
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void hleCheat(u64 userdata, int cyclesLate) {
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CoreTiming::ScheduleEvent(msToCycles(77), CheatEvent, 0);
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if (g_Config.bReloadCheats == true) { //Checks if the "reload cheats" button has been pressed.
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cheatEngine->CreateCodeList();
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g_Config.bReloadCheats = false;
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}
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if (g_Config.bEnableCheats && cheatEngine) {
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cheatEngine->Run();
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}
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}
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CWCheatEngine::CWCheatEngine() {
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}
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void CWCheatEngine::Exit() {
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exit2 = true;
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}
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void CWCheatEngine::CreateCodeList() { //Creates code list to be used in function GetNextCode
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initialCodesList = GetCodesList();
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std::string currentcode, codename;
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std::vector<std::string> codelist;
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for (size_t i = 0; i < initialCodesList.size(); i ++) {
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if (initialCodesList[i].substr(0,3) == "_C1") {
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cheatEnabled = true;
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codename = initialCodesList[i];
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codename.erase (codename.begin(), codename.begin()+4);
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codeNameList.push_back(codename); //Import names for GUI
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continue;
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}
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if (initialCodesList[i].substr(0,2) == "_L") {
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if (cheatEnabled == true) {
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currentcode = initialCodesList[i];
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currentcode.erase(currentcode.begin(), currentcode.begin() + 3);
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codelist.push_back(currentcode);
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}
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continue;
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}
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if (initialCodesList[i].substr(0,3) == "_C0") {
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cheatEnabled = false;
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codename = initialCodesList[i];
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codename.erase (codename.begin(), codename.begin()+4);
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codeNameList.push_back(codename); //Import names for GUI
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continue;
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}
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}
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parts = makeCodeParts(codelist);
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}
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inline std::vector<std::string> makeCodeParts(std::vector<std::string> CodesList) { //Takes a single code line and creates a two-part vector for all codes. Feeds to CreateCodeList
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std::string currentcode;
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std::vector<std::string> finalList;
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char split_char = '\n';
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char empty = ' ';
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for (size_t i = 0; i < CodesList.size(); i++) {
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currentcode = CodesList[i];
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for (size_t j=0; j < currentcode.length(); j++) {
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if (currentcode[j] == empty) {
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currentcode[j] = '\n';
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}
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}
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trim2(currentcode);
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std::istringstream iss(currentcode);
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std::string each;
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while (std::getline(iss, each, split_char)) {
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finalList.push_back(each);
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}
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}
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return finalList;
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}
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std::vector<int> CWCheatEngine::GetNextCode() { // Feeds a size-2 vector of ints to Run() which contains the address and value of one cheat.
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std::string code1;
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std::string code2;
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std::vector<std::string> splitCode;
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std::vector<int> finalCode;
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std::string modifier2 = "0";
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while (true) {
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if (currentCode >= parts.size()) {
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code1.clear();
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code2.clear();
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break;
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}
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code1 = parts[currentCode++];
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trim2(code1);
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code2 = parts[currentCode++];
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trim2(code2);
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splitCode.push_back(code1);
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splitCode.push_back(code2);
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int var1 = (int) parseHexLong(splitCode[0]);
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int var2 = (int) parseHexLong(splitCode[1]);
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finalCode.push_back(var1);
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finalCode.push_back(var2);
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if (splitCode[0].substr(0,1) == modifier2) {
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break;
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}
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}
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return finalCode;
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}
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void CWCheatEngine::SkipCodes(int count) {
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for (int i = 0; i < count; i ++) {
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if (GetNextCode()[0] == 0) {
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break;
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}
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}
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}
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void CWCheatEngine::SkipAllCodes() {
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currentCode = codes.size();
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}
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int CWCheatEngine::GetAddress(int value) { //Returns static address used by ppsspp. Some games may not like this, and causes cheats to not work without offset
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return (value + 0x08800000) & 0x3FFFFFFF;
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}
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inline void trim2(std::string& str) {
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size_t pos = str.find_last_not_of(' ');
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if(pos != std::string::npos) {
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str.erase(pos + 1);
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pos = str.find_first_not_of(' ');
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if(pos != std::string::npos) str.erase(0, pos);
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}
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else str.erase(str.begin(), str.end());
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}
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std::vector<std::string> CWCheatEngine::GetCodesList() { //Reads the entire cheat list from the appropriate .ini.
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std::string line;
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std::vector<std::string> codesList; // Read from INI here
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std::ifstream list(activeCheatFile.c_str());
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for (int i = 0; !list.eof(); i ++) {
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getline(list, line, '\n');
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codesList.push_back(line);
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}
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for(size_t i = 0; i < codesList.size(); i++) {
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trim2(codesList[i]);
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}
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return codesList;
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}
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void CWCheatEngine::Run() {
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exit2 = false;
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while (!exit2) {
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currentCode = 0;
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while (true) {
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std::vector<int> code = GetNextCode();
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if (code.size() < 2) {
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Exit();
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break;
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}
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int value;
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unsigned int comm = code[0];
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int arg = code[1];
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int addr = GetAddress(comm & 0x0FFFFFFF);
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switch (comm >> 28) {
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case 0: // 8-bit write.
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if (Memory::IsValidAddress(addr)){
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Memory::Write_U8((u8) arg, addr);
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}
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break;
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case 0x1: // 16-bit write
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if (Memory::IsValidAddress(addr)){
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Memory::Write_U16((u16) arg, addr);
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}
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break;
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case 0x2: // 32-bit write
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if (Memory::IsValidAddress(addr)){
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Memory::Write_U32((u32) arg, addr);
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}
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break;
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case 0x3: // Increment/Decrement
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{
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addr = GetAddress(arg);
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value = 0;
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int increment = 0;
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// Read value from memory
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switch ((comm >> 20) & 0xF) {
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case 1:
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case 2: // 8-bit
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value = Memory::Read_U8(addr);
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increment = comm & 0xFF;
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break;
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case 3:
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case 4: // 16-bit
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value = Memory::Read_U16(addr);
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increment = comm & 0xFFFF;
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break;
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case 5:
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case 6: // 32-bit
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value = Memory::Read_U32(addr);
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code = GetNextCode();
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if ( code[0] != NULL) {
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increment = code[0];
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}
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break;
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}
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// Increment/Decrement value
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switch ((comm >> 20) & 0xF) {
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case 1:
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case 3:
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case 5: // increment
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value += increment;
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break;
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case 2:
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case 4:
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case 6: // Decrement
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value -= increment;
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break;
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}
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// Write value back to memory
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switch ((comm >> 20) & 0xF) {
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case 1:
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case 2: // 8-bit
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Memory::Write_U8((u8) value, addr);
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break;
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case 3:
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case 4: // 16-bit
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Memory::Write_U16((u16) value, addr);
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break;
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case 5:
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case 6: // 32-bit
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Memory::Write_U32((u32) value, addr);
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break;
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}
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break;
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}
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case 0x4: // 32-bit patch code
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code = GetNextCode();
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if (code[0] != 0) {
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int data = code[0];
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int dataAdd = code[1];
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int maxAddr = (arg >> 16) & 0xFFFF;
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int stepAddr = (arg & 0xFFFF) * 4;
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for (int a = 0; a < maxAddr; a++) {
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if (Memory::IsValidAddress(addr)) {
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Memory::Write_U32((u32) data, addr);
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}
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addr += stepAddr;
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data += dataAdd;
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}
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}
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break;
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case 0x5: // Memcpy command
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code = GetNextCode();
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if (code[0] != NULL) {
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int destAddr = code[0];
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if (Memory::IsValidAddress(addr) && Memory::IsValidAddress(destAddr)) {
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Memory::Memcpy(destAddr, Memory::GetPointer(addr), arg);
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}
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}
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break;
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case 0x6: // Pointer commands
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code = GetNextCode();
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if (code[0] != NULL) {
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int arg2 = code[0];
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int offset = code[1];
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int baseOffset = (arg2 >> 20) * 4;
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int base = Memory::Read_U32(addr + baseOffset);
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int count = arg2 & 0xFFFF;
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int type = (arg2 >> 16) & 0xF;
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for (int i = 1; i < count; i ++ ) {
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if (i+1 < count) {
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code = GetNextCode();
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int arg3 = code[0];
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int arg4 = code[1];
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int comm3 = arg3 >> 28;
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switch (comm3) {
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case 0x1: // type copy byte
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{
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int srcAddr = Memory::Read_U32(addr) + offset;
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int dstAddr = Memory::Read_U16(addr + baseOffset) + (arg3 & 0x0FFFFFFF);
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Memory::Memcpy(dstAddr, Memory::GetPointer(srcAddr), arg);
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type = -1; //Done
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break; }
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case 0x2:
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case 0x3: // type pointer walk
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{
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int walkOffset = arg3 & 0x0FFFFFFF;
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if (comm3 == 0x3) {
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walkOffset = -walkOffset;
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}
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base = Memory::Read_U32(base + walkOffset);
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int comm4 = arg4 >> 28;
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switch (comm4) {
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case 0x2:
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case 0x3: // type pointer walk
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walkOffset = arg4 & 0x0FFFFFFF;
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if (comm4 == 0x3) {
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walkOffset = -walkOffset;
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}
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base = Memory::Read_U32(base + walkOffset);
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break;
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}
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break; }
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case 0x9: // type multi address write
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base += arg3 & 0x0FFFFFFF;
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arg += arg4;
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break;
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}
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}
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}
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switch (type) {
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case 0: // 8 bit write
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Memory::Write_U8((u8) arg, base + offset);
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break;
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case 1: // 16-bit write
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Memory::Write_U16((u16) arg, base + offset);
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break;
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case 2: // 32-bit write
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Memory::Write_U32((u32) arg, base + offset);
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break;
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case 3: // 8 bit inverse write
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Memory::Write_U8((u8) arg, base - offset);
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break;
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case 4: // 16-bit inverse write
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Memory::Write_U16((u16) arg, base - offset);
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break;
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case 5: // 32-bit inverse write
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Memory::Write_U32((u32) arg, base - offset);
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break;
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case -1: // Operation already performed, nothing to do
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break;
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}
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}
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break;
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case 0x7: // Boolean commands.
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switch (arg >> 16) {
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case 0x0000: // 8-bit OR.
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if (Memory::IsValidAddress(addr)) {
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int val1 = (int) (arg & 0xFF);
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int val2 = (int) Memory::Read_U8(addr);
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Memory::Write_U8((u8) (val1 | val2), addr);
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}
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break;
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case 0x0002: // 8-bit AND.
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if (Memory::IsValidAddress(addr)) {
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int val1 = (int) (arg & 0xFF);
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int val2 = (int) Memory::Read_U8(addr);
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Memory::Write_U8((u8) (val1 & val2), addr);
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}
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break;
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case 0x0004: // 8-bit XOR.
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if (Memory::IsValidAddress(addr)) {
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int val1 = (int) (arg & 0xFF);
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int val2 = (int) Memory::Read_U8(addr);
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Memory::Write_U8((u8) (val1 ^ val2), addr);
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}
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break;
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case 0x0001: // 16-bit OR.
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if (Memory::IsValidAddress(addr)) {
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short val1 = (short) (arg & 0xFFFF);
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short val2 = (short) Memory::Read_U16(addr);
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Memory::Write_U16((u16) (val1 | val2), addr);
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}
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break;
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case 0x0003: // 16-bit AND.
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if (Memory::IsValidAddress(addr)) {
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short val1 = (short) (arg & 0xFFFF);
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short val2 = (short) Memory::Read_U16(addr);
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Memory::Write_U16((u16) (val1 & val2), addr);
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}
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break;
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case 0x0005: // 16-bit OR.
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if (Memory::IsValidAddress(addr)) {
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short val1 = (short) (arg & 0xFFFF);
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short val2 = (short) Memory::Read_U16(addr);
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Memory::Write_U16((u16) (val1 ^ val2), addr);
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}
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break;
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}
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break;
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case 0x8: // 8-bit and 16-bit patch code
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code = GetNextCode();
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if (code[0] != NULL) {
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int data = code[0];
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int dataAdd = code[1];
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bool is8Bit = (data >> 16) == 0x0000;
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int maxAddr = (arg >> 16) & 0xFFFF;
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int stepAddr = (arg & 0xFFFF) * (is8Bit ? 1 : 2);
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for (int a = 0; a < maxAddr; a++) {
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if (Memory::IsValidAddress(addr)) {
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if (is8Bit) {
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Memory::Write_U8((u8) (data & 0xFF), addr);
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}
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else {
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Memory::Write_U16((u16) (data & 0xFFFF), addr);
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}
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}
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addr += stepAddr;
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data += dataAdd;
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}
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}
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break;
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case 0xB: // Time command (not sure what to do?)
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break;
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case 0xC: // Code stopper
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if (Memory::IsValidAddress(addr)) {
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value = Memory::Read_U32(addr);
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if (value != arg) {
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SkipAllCodes();
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}
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}
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break;
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case 0xD: // Test commands & Jocker codes ( Someone will have to help me with these)
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break;
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case 0xE: // Test commands, multiple skip
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{
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bool is8Bit = (comm >> 24) == 0x1;
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addr = GetAddress(arg & 0x0FFFFFFF);
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if (Memory::IsValidAddress(addr)) {
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int memoryValue = is8Bit ? Memory::Read_U8(addr) : Memory::Read_U16(addr);
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int testValue = comm & (is8Bit ? 0xFF : 0xFFFF);
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bool executeNextLines = false;
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switch ( arg >> 28) {
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case 0x0: // Equal
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executeNextLines = memoryValue == testValue;
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break;
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case 0x1: // Not Equal
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executeNextLines = memoryValue != testValue;
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break;
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case 0x2: // Less Than
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executeNextLines = memoryValue < testValue;
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break;
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case 0x3: // Greater Than
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executeNextLines = memoryValue > testValue;
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break;
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}
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if (!executeNextLines) {
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int skip = (comm >> 16) & (is8Bit ? 0xFF : 0xFFF);
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SkipCodes(skip);
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}
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}
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break;
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}
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}
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}
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}
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// exiting...
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Exit();
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}
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