File size: 3,547 Bytes
034d0a2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | // Copyright 2018 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <fstream>
#include <functional>
#include <fmt/format.h>
#include "common/file_util.h"
#include "core/cheats/cheats.h"
#include "core/cheats/gateway_cheat.h"
#include "core/core.h"
#include "core/core_timing.h"
namespace Cheats {
// Luma3DS uses this interval for applying cheats, so to keep consistent behavior
// we use the same value
constexpr u64 run_interval_ticks = 50'000'000;
CheatEngine::CheatEngine(Core::System& system_) : system{system_} {}
CheatEngine::~CheatEngine() {
if (system.IsPoweredOn()) {
system.CoreTiming().UnscheduleEvent(event, 0);
}
}
void CheatEngine::Connect() {
event = system.CoreTiming().RegisterEvent(
"CheatCore::run_event",
[this](u64 thread_id, s64 cycle_late) { RunCallback(thread_id, cycle_late); });
system.CoreTiming().ScheduleEvent(run_interval_ticks, event);
}
std::span<const std::shared_ptr<CheatBase>> CheatEngine::GetCheats() const {
std::shared_lock lock{cheats_list_mutex};
return cheats_list;
}
void CheatEngine::AddCheat(std::shared_ptr<CheatBase>&& cheat) {
std::unique_lock lock{cheats_list_mutex};
cheats_list.push_back(std::move(cheat));
}
void CheatEngine::RemoveCheat(std::size_t index) {
std::unique_lock lock{cheats_list_mutex};
if (index < 0 || index >= cheats_list.size()) {
LOG_ERROR(Core_Cheats, "Invalid index {}", index);
return;
}
cheats_list.erase(cheats_list.begin() + index);
}
void CheatEngine::UpdateCheat(std::size_t index, std::shared_ptr<CheatBase>&& new_cheat) {
std::unique_lock lock{cheats_list_mutex};
if (index < 0 || index >= cheats_list.size()) {
LOG_ERROR(Core_Cheats, "Invalid index {}", index);
return;
}
cheats_list[index] = std::move(new_cheat);
}
void CheatEngine::SaveCheatFile(u64 title_id) const {
const std::string cheat_dir = FileUtil::GetUserPath(FileUtil::UserPath::CheatsDir);
const std::string filepath = fmt::format("{}{:016X}.txt", cheat_dir, title_id);
if (!FileUtil::IsDirectory(cheat_dir)) {
FileUtil::CreateDir(cheat_dir);
}
FileUtil::IOFile file(filepath, "w");
auto cheats = GetCheats();
for (const auto& cheat : cheats) {
file.WriteString(cheat->ToString());
}
}
void CheatEngine::LoadCheatFile(u64 title_id) {
{
std::unique_lock lock{cheats_list_mutex};
if (loaded_title_id.has_value() && loaded_title_id == title_id) {
return;
}
}
const std::string cheat_dir = FileUtil::GetUserPath(FileUtil::UserPath::CheatsDir);
const std::string filepath = fmt::format("{}{:016X}.txt", cheat_dir, title_id);
if (!FileUtil::IsDirectory(cheat_dir)) {
FileUtil::CreateDir(cheat_dir);
}
if (!FileUtil::Exists(filepath)) {
return;
}
auto gateway_cheats = GatewayCheat::LoadFile(filepath);
{
std::unique_lock lock{cheats_list_mutex};
loaded_title_id = title_id;
cheats_list = std::move(gateway_cheats);
}
}
void CheatEngine::RunCallback([[maybe_unused]] std::uintptr_t user_data, s64 cycles_late) {
{
std::shared_lock lock{cheats_list_mutex};
for (const auto& cheat : cheats_list) {
if (cheat->IsEnabled()) {
cheat->Execute(system);
}
}
}
system.CoreTiming().ScheduleEvent(run_interval_ticks - cycles_late, event);
}
} // namespace Cheats
|