1 files changed, 455 insertions, 0 deletions
diff --git a/src/input_common/tas/tas_input.cpp b/src/input_common/tas/tas_input.cpp
new file mode 100644
index 000000000..1598092b6
--- /dev/null
+++ b/src/input_common/tas/tas_input.cpp
@@ -0,0 +1,455 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <cstring>
+#include <regex>
+
+#include "common/fs/file.h"
+#include "common/fs/fs_types.h"
+#include "common/fs/path_util.h"
+#include "common/logging/log.h"
+#include "common/settings.h"
+#include "input_common/tas/tas_input.h"
+
+namespace TasInput {
+
+// Supported keywords and buttons from a TAS file
+constexpr std::array<std::pair<std::string_view, TasButton>, 20> text_to_tas_button = {
+    std::pair{"KEY_A", TasButton::BUTTON_A},
+    {"KEY_B", TasButton::BUTTON_B},
+    {"KEY_X", TasButton::BUTTON_X},
+    {"KEY_Y", TasButton::BUTTON_Y},
+    {"KEY_LSTICK", TasButton::STICK_L},
+    {"KEY_RSTICK", TasButton::STICK_R},
+    {"KEY_L", TasButton::TRIGGER_L},
+    {"KEY_R", TasButton::TRIGGER_R},
+    {"KEY_PLUS", TasButton::BUTTON_PLUS},
+    {"KEY_MINUS", TasButton::BUTTON_MINUS},
+    {"KEY_DLEFT", TasButton::BUTTON_LEFT},
+    {"KEY_DUP", TasButton::BUTTON_UP},
+    {"KEY_DRIGHT", TasButton::BUTTON_RIGHT},
+    {"KEY_DDOWN", TasButton::BUTTON_DOWN},
+    {"KEY_SL", TasButton::BUTTON_SL},
+    {"KEY_SR", TasButton::BUTTON_SR},
+    {"KEY_CAPTURE", TasButton::BUTTON_CAPTURE},
+    {"KEY_HOME", TasButton::BUTTON_HOME},
+    {"KEY_ZL", TasButton::TRIGGER_ZL},
+    {"KEY_ZR", TasButton::TRIGGER_ZR},
+};
+
+Tas::Tas() {
+    if (!Settings::values.tas_enable) {
+        needs_reset = true;
+        return;
+    }
+    LoadTasFiles();
+}
+
+Tas::~Tas() {
+    Stop();
+};
+
+void Tas::LoadTasFiles() {
+    script_length = 0;
+    for (size_t i = 0; i < commands.size(); i++) {
+        LoadTasFile(i);
+        if (commands[i].size() > script_length) {
+            script_length = commands[i].size();
+        }
+    }
+}
+
+void Tas::LoadTasFile(size_t player_index) {
+    if (!commands[player_index].empty()) {
+        commands[player_index].clear();
+    }
+    std::string file =
+        Common::FS::ReadStringFromFile(Common::FS::GetYuzuPath(Common::FS::YuzuPath::TASDir) /
+                                           fmt::format("script0-{}.txt", player_index + 1),
+                                       Common::FS::FileType::BinaryFile);
+    std::stringstream command_line(file);
+    std::string line;
+    int frame_no = 0;
+    while (std::getline(command_line, line, '\n')) {
+        if (line.empty()) {
+            continue;
+        }
+        LOG_DEBUG(Input, "Loading line: {}", line);
+        std::smatch m;
+
+        std::stringstream linestream(line);
+        std::string segment;
+        std::vector<std::string> seglist;
+
+        while (std::getline(linestream, segment, ' ')) {
+            seglist.push_back(segment);
+        }
+
+        if (seglist.size() < 4) {
+            continue;
+        }
+
+        while (frame_no < std::stoi(seglist.at(0))) {
+            commands[player_index].push_back({});
+            frame_no++;
+        }
+
+        TASCommand command = {
+            .buttons = ReadCommandButtons(seglist.at(1)),
+            .l_axis = ReadCommandAxis(seglist.at(2)),
+            .r_axis = ReadCommandAxis(seglist.at(3)),
+        };
+        commands[player_index].push_back(command);
+        frame_no++;
+    }
+    LOG_INFO(Input, "TAS file loaded! {} frames", frame_no);
+}
+
+void Tas::WriteTasFile(std::u8string file_name) {
+    std::string output_text;
+    for (size_t frame = 0; frame < record_commands.size(); frame++) {
+        if (!output_text.empty()) {
+            output_text += "\n";
+        }
+        const TASCommand& line = record_commands[frame];
+        output_text += std::to_string(frame) + " " + WriteCommandButtons(line.buttons) + " " +
+                       WriteCommandAxis(line.l_axis) + " " + WriteCommandAxis(line.r_axis);
+    }
+    const auto bytes_written = Common::FS::WriteStringToFile(
+        Common::FS::GetYuzuPath(Common::FS::YuzuPath::TASDir) / file_name,
+        Common::FS::FileType::TextFile, output_text);
+    if (bytes_written == output_text.size()) {
+        LOG_INFO(Input, "TAS file written to file!");
+    } else {
+        LOG_ERROR(Input, "Writing the TAS-file has failed! {} / {} bytes written", bytes_written,
+                  output_text.size());
+    }
+}
+
+std::pair<float, float> Tas::FlipAxisY(std::pair<float, float> old) {
+    auto [x, y] = old;
+    return {x, -y};
+}
+
+void Tas::RecordInput(u32 buttons, const std::array<std::pair<float, float>, 2>& axes) {
+    last_input = {buttons, FlipAxisY(axes[0]), FlipAxisY(axes[1])};
+}
+
+std::tuple<TasState, size_t, size_t> Tas::GetStatus() const {
+    TasState state;
+    if (is_recording) {
+        return {TasState::Recording, 0, record_commands.size()};
+    }
+
+    if (is_running) {
+        state = TasState::Running;
+    } else {
+        state = TasState::Stopped;
+    }
+
+    return {state, current_command, script_length};
+}
+
+std::string Tas::DebugButtons(u32 buttons) const {
+    return fmt::format("{{ {} }}", TasInput::Tas::ButtonsToString(buttons));
+}
+
+std::string Tas::DebugJoystick(float x, float y) const {
+    return fmt::format("[ {} , {} ]", std::to_string(x), std::to_string(y));
+}
+
+std::string Tas::DebugInput(const TasData& data) const {
+    return fmt::format("{{ {} , {} , {} }}", DebugButtons(data.buttons),
+                       DebugJoystick(data.axis[0], data.axis[1]),
+                       DebugJoystick(data.axis[2], data.axis[3]));
+}
+
+std::string Tas::DebugInputs(const std::array<TasData, PLAYER_NUMBER>& arr) const {
+    std::string returns = "[ ";
+    for (size_t i = 0; i < arr.size(); i++) {
+        returns += DebugInput(arr[i]);
+        if (i != arr.size() - 1) {
+            returns += " , ";
+        }
+    }
+    return returns + "]";
+}
+
+std::string Tas::ButtonsToString(u32 button) const {
+    std::string returns;
+    for (auto [text_button, tas_button] : text_to_tas_button) {
+        if ((button & static_cast<u32>(tas_button)) != 0)
+            returns += fmt::format(", {}", text_button.substr(4));
+    }
+    return returns.empty() ? "" : returns.substr(2);
+}
+
+void Tas::UpdateThread() {
+    if (!Settings::values.tas_enable) {
+        if (is_running) {
+            Stop();
+        }
+        return;
+    }
+
+    if (is_recording) {
+        record_commands.push_back(last_input);
+    }
+    if (needs_reset) {
+        current_command = 0;
+        needs_reset = false;
+        LoadTasFiles();
+        LOG_DEBUG(Input, "tas_reset done");
+    }
+
+    if (!is_running) {
+        tas_data.fill({});
+        return;
+    }
+    if (current_command < script_length) {
+        LOG_DEBUG(Input, "Playing TAS {}/{}", current_command, script_length);
+        size_t frame = current_command++;
+        for (size_t i = 0; i < commands.size(); i++) {
+            if (frame < commands[i].size()) {
+                TASCommand command = commands[i][frame];
+                tas_data[i].buttons = command.buttons;
+                auto [l_axis_x, l_axis_y] = command.l_axis;
+                tas_data[i].axis[0] = l_axis_x;
+                tas_data[i].axis[1] = l_axis_y;
+                auto [r_axis_x, r_axis_y] = command.r_axis;
+                tas_data[i].axis[2] = r_axis_x;
+                tas_data[i].axis[3] = r_axis_y;
+            } else {
+                tas_data[i] = {};
+            }
+        }
+    } else {
+        is_running = Settings::values.tas_loop.GetValue();
+        current_command = 0;
+        tas_data.fill({});
+        if (!is_running) {
+            SwapToStoredController();
+        }
+    }
+    LOG_DEBUG(Input, "TAS inputs: {}", DebugInputs(tas_data));
+}
+
+TasAnalog Tas::ReadCommandAxis(const std::string& line) const {
+    std::stringstream linestream(line);
+    std::string segment;
+    std::vector<std::string> seglist;
+
+    while (std::getline(linestream, segment, ';')) {
+        seglist.push_back(segment);
+    }
+
+    const float x = std::stof(seglist.at(0)) / 32767.0f;
+    const float y = std::stof(seglist.at(1)) / 32767.0f;
+
+    return {x, y};
+}
+
+u32 Tas::ReadCommandButtons(const std::string& data) const {
+    std::stringstream button_text(data);
+    std::string line;
+    u32 buttons = 0;
+    while (std::getline(button_text, line, ';')) {
+        for (auto [text, tas_button] : text_to_tas_button) {
+            if (text == line) {
+                buttons |= static_cast<u32>(tas_button);
+                break;
+            }
+        }
+    }
+    return buttons;
+}
+
+std::string Tas::WriteCommandAxis(TasAnalog data) const {
+    auto [x, y] = data;
+    std::string line;
+    line += std::to_string(static_cast<int>(x * 32767));
+    line += ";";
+    line += std::to_string(static_cast<int>(y * 32767));
+    return line;
+}
+
+std::string Tas::WriteCommandButtons(u32 data) const {
+    if (data == 0) {
+        return "NONE";
+    }
+
+    std::string line;
+    u32 index = 0;
+    while (data > 0) {
+        if ((data & 1) == 1) {
+            for (auto [text, tas_button] : text_to_tas_button) {
+                if (tas_button == static_cast<TasButton>(1 << index)) {
+                    if (line.size() > 0) {
+                        line += ";";
+                    }
+                    line += text;
+                    break;
+                }
+            }
+        }
+        index++;
+        data >>= 1;
+    }
+    return line;
+}
+
+void Tas::StartStop() {
+    if (!Settings::values.tas_enable) {
+        return;
+    }
+    if (is_running) {
+        Stop();
+    } else {
+        is_running = true;
+        SwapToTasController();
+    }
+}
+
+void Tas::Stop() {
+    is_running = false;
+    SwapToStoredController();
+}
+
+void Tas::SwapToTasController() {
+    if (!Settings::values.tas_swap_controllers) {
+        return;
+    }
+    auto& players = Settings::values.players.GetValue();
+    for (std::size_t index = 0; index < players.size(); index++) {
+        auto& player = players[index];
+        player_mappings[index] = player;
+
+        // Only swap active controllers
+        if (!player.connected) {
+            continue;
+        }
+
+        Common::ParamPackage tas_param;
+        tas_param.Set("pad", static_cast<u8>(index));
+        auto button_mapping = GetButtonMappingForDevice(tas_param);
+        auto analog_mapping = GetAnalogMappingForDevice(tas_param);
+        auto& buttons = player.buttons;
+        auto& analogs = player.analogs;
+
+        for (std::size_t i = 0; i < buttons.size(); ++i) {
+            buttons[i] = button_mapping[static_cast<Settings::NativeButton::Values>(i)].Serialize();
+        }
+        for (std::size_t i = 0; i < analogs.size(); ++i) {
+            analogs[i] = analog_mapping[static_cast<Settings::NativeAnalog::Values>(i)].Serialize();
+        }
+    }
+    is_old_input_saved = true;
+    Settings::values.is_device_reload_pending.store(true);
+}
+
+void Tas::SwapToStoredController() {
+    if (!is_old_input_saved) {
+        return;
+    }
+    auto& players = Settings::values.players.GetValue();
+    for (std::size_t index = 0; index < players.size(); index++) {
+        players[index] = player_mappings[index];
+    }
+    is_old_input_saved = false;
+    Settings::values.is_device_reload_pending.store(true);
+}
+
+void Tas::Reset() {
+    if (!Settings::values.tas_enable) {
+        return;
+    }
+    needs_reset = true;
+}
+
+bool Tas::Record() {
+    if (!Settings::values.tas_enable) {
+        return true;
+    }
+    is_recording = !is_recording;
+    return is_recording;
+}
+
+void Tas::SaveRecording(bool overwrite_file) {
+    if (is_recording) {
+        return;
+    }
+    if (record_commands.empty()) {
+        return;
+    }
+    WriteTasFile(u8"record.txt");
+    if (overwrite_file) {
+        WriteTasFile(u8"script0-1.txt");
+    }
+    needs_reset = true;
+    record_commands.clear();
+}
+
+InputCommon::ButtonMapping Tas::GetButtonMappingForDevice(
+    const Common::ParamPackage& params) const {
+    // This list is missing ZL/ZR since those are not considered buttons.
+    // We will add those afterwards
+    // This list also excludes any button that can't be really mapped
+    static constexpr std::array<std::pair<Settings::NativeButton::Values, TasButton>, 20>
+        switch_to_tas_button = {
+            std::pair{Settings::NativeButton::A, TasButton::BUTTON_A},
+            {Settings::NativeButton::B, TasButton::BUTTON_B},
+            {Settings::NativeButton::X, TasButton::BUTTON_X},
+            {Settings::NativeButton::Y, TasButton::BUTTON_Y},
+            {Settings::NativeButton::LStick, TasButton::STICK_L},
+            {Settings::NativeButton::RStick, TasButton::STICK_R},
+            {Settings::NativeButton::L, TasButton::TRIGGER_L},
+            {Settings::NativeButton::R, TasButton::TRIGGER_R},
+            {Settings::NativeButton::Plus, TasButton::BUTTON_PLUS},
+            {Settings::NativeButton::Minus, TasButton::BUTTON_MINUS},
+            {Settings::NativeButton::DLeft, TasButton::BUTTON_LEFT},
+            {Settings::NativeButton::DUp, TasButton::BUTTON_UP},
+            {Settings::NativeButton::DRight, TasButton::BUTTON_RIGHT},
+            {Settings::NativeButton::DDown, TasButton::BUTTON_DOWN},
+            {Settings::NativeButton::SL, TasButton::BUTTON_SL},
+            {Settings::NativeButton::SR, TasButton::BUTTON_SR},
+            {Settings::NativeButton::Screenshot, TasButton::BUTTON_CAPTURE},
+            {Settings::NativeButton::Home, TasButton::BUTTON_HOME},
+            {Settings::NativeButton::ZL, TasButton::TRIGGER_ZL},
+            {Settings::NativeButton::ZR, TasButton::TRIGGER_ZR},
+        };
+
+    InputCommon::ButtonMapping mapping{};
+    for (const auto& [switch_button, tas_button] : switch_to_tas_button) {
+        Common::ParamPackage button_params({{"engine", "tas"}});
+        button_params.Set("pad", params.Get("pad", 0));
+        button_params.Set("button", static_cast<int>(tas_button));
+        mapping.insert_or_assign(switch_button, std::move(button_params));
+    }
+
+    return mapping;
+}
+
+InputCommon::AnalogMapping Tas::GetAnalogMappingForDevice(
+    const Common::ParamPackage& params) const {
+
+    InputCommon::AnalogMapping mapping = {};
+    Common::ParamPackage left_analog_params;
+    left_analog_params.Set("engine", "tas");
+    left_analog_params.Set("pad", params.Get("pad", 0));
+    left_analog_params.Set("axis_x", static_cast<int>(TasAxes::StickX));
+    left_analog_params.Set("axis_y", static_cast<int>(TasAxes::StickY));
+    mapping.insert_or_assign(Settings::NativeAnalog::LStick, std::move(left_analog_params));
+    Common::ParamPackage right_analog_params;
+    right_analog_params.Set("engine", "tas");
+    right_analog_params.Set("pad", params.Get("pad", 0));
+    right_analog_params.Set("axis_x", static_cast<int>(TasAxes::SubstickX));
+    right_analog_params.Set("axis_y", static_cast<int>(TasAxes::SubstickY));
+    mapping.insert_or_assign(Settings::NativeAnalog::RStick, std::move(right_analog_params));
+    return mapping;
+}
+
+const TasData& Tas::GetTasState(std::size_t pad) const {
+    return tas_data[pad];
+}
+} // namespace TasInput