7dd9174d31
* cheats: Use global cheat engine * cheats: Prevent wasted double-load of cheat file. * android: Fix for cheat engine updates. --------- Co-authored-by: GPUCode <geoster3d@gmail.com>
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <fstream>
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#include <functional>
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#include <fmt/format.h>
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#include "common/file_util.h"
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#include "core/cheats/cheats.h"
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#include "core/cheats/gateway_cheat.h"
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#include "core/core.h"
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#include "core/core_timing.h"
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namespace Cheats {
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// Luma3DS uses this interval for applying cheats, so to keep consistent behavior
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// we use the same value
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constexpr u64 run_interval_ticks = 50'000'000;
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CheatEngine::CheatEngine(Core::System& system_) : system{system_} {}
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CheatEngine::~CheatEngine() {
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if (system.IsPoweredOn()) {
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system.CoreTiming().UnscheduleEvent(event, 0);
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}
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}
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void CheatEngine::Connect() {
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event = system.CoreTiming().RegisterEvent(
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"CheatCore::run_event",
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[this](u64 thread_id, s64 cycle_late) { RunCallback(thread_id, cycle_late); });
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system.CoreTiming().ScheduleEvent(run_interval_ticks, event);
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}
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std::span<const std::shared_ptr<CheatBase>> CheatEngine::GetCheats() const {
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std::shared_lock lock{cheats_list_mutex};
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return cheats_list;
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}
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void CheatEngine::AddCheat(std::shared_ptr<CheatBase>&& cheat) {
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std::unique_lock lock{cheats_list_mutex};
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cheats_list.push_back(std::move(cheat));
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}
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void CheatEngine::RemoveCheat(std::size_t index) {
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std::unique_lock lock{cheats_list_mutex};
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if (index < 0 || index >= cheats_list.size()) {
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LOG_ERROR(Core_Cheats, "Invalid index {}", index);
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return;
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}
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cheats_list.erase(cheats_list.begin() + index);
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}
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void CheatEngine::UpdateCheat(std::size_t index, std::shared_ptr<CheatBase>&& new_cheat) {
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std::unique_lock lock{cheats_list_mutex};
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if (index < 0 || index >= cheats_list.size()) {
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LOG_ERROR(Core_Cheats, "Invalid index {}", index);
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return;
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}
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cheats_list[index] = std::move(new_cheat);
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}
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void CheatEngine::SaveCheatFile(u64 title_id) const {
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const std::string cheat_dir = FileUtil::GetUserPath(FileUtil::UserPath::CheatsDir);
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const std::string filepath = fmt::format("{}{:016X}.txt", cheat_dir, title_id);
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if (!FileUtil::IsDirectory(cheat_dir)) {
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FileUtil::CreateDir(cheat_dir);
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}
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FileUtil::IOFile file(filepath, "w");
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auto cheats = GetCheats();
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for (const auto& cheat : cheats) {
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file.WriteString(cheat->ToString());
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}
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}
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void CheatEngine::LoadCheatFile(u64 title_id) {
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{
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std::unique_lock lock{cheats_list_mutex};
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if (loaded_title_id.has_value() && loaded_title_id == title_id) {
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return;
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}
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}
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const std::string cheat_dir = FileUtil::GetUserPath(FileUtil::UserPath::CheatsDir);
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const std::string filepath = fmt::format("{}{:016X}.txt", cheat_dir, title_id);
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if (!FileUtil::IsDirectory(cheat_dir)) {
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FileUtil::CreateDir(cheat_dir);
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}
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if (!FileUtil::Exists(filepath)) {
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return;
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}
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auto gateway_cheats = GatewayCheat::LoadFile(filepath);
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{
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std::unique_lock lock{cheats_list_mutex};
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loaded_title_id = title_id;
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cheats_list = std::move(gateway_cheats);
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}
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}
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void CheatEngine::RunCallback([[maybe_unused]] std::uintptr_t user_data, s64 cycles_late) {
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{
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std::shared_lock lock{cheats_list_mutex};
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for (const auto& cheat : cheats_list) {
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if (cheat->IsEnabled()) {
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cheat->Execute(system);
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}
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}
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}
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system.CoreTiming().ScheduleEvent(run_interval_ticks - cycles_late, event);
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}
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} // namespace Cheats
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