1 files changed, 340 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..343641945
--- /dev/null
+++ b/src/input_common/tas/tas_input.cpp
@@ -0,0 +1,340 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <chrono>
+#include <cstring>
+#include <functional>
+#include <random>
+#include <regex>
+#include <thread>
+#include <boost/asio.hpp>
+
+#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 {
+
+Tas::Tas() {
+    LoadTasFiles();
+}
+
+Tas::~Tas() {
+    update_thread_running = false;
+}
+
+void Tas::RefreshTasFile() {
+    refresh_tas_fle = true;
+}
+void Tas::LoadTasFiles() {
+    scriptLength = 0;
+    for (int i = 0; i < PLAYER_NUMBER; i++) {
+        LoadTasFile(i);
+        if (newCommands[i].size() > scriptLength)
+            scriptLength = newCommands[i].size();
+    }
+}
+void Tas::LoadTasFile(int playerIndex) {
+    LOG_DEBUG(Input, "LoadTasFile()");
+    if (!newCommands[playerIndex].empty()) {
+        newCommands[playerIndex].clear();
+    }
+    std::string file = Common::FS::ReadStringFromFile(
+        Common::FS::GetYuzuPathString(Common::FS::YuzuPath::TASFile) + "script0-" +
+            std::to_string(playerIndex + 1) + ".txt",
+        Common::FS::FileType::BinaryFile);
+    std::stringstream command_line(file);
+    std::string line;
+    int frameNo = 0;
+    TASCommand empty = {.buttons = 0, .l_axis = {0.f, 0.f}, .r_axis = {0.f, 0.f}};
+    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 (frameNo < std::stoi(seglist.at(0))) {
+            newCommands[playerIndex].push_back(empty);
+            frameNo++;
+        }
+
+        TASCommand command = {
+            .buttons = ReadCommandButtons(seglist.at(1)),
+            .l_axis = ReadCommandAxis(seglist.at(2)),
+            .r_axis = ReadCommandAxis(seglist.at(3)),
+        };
+        newCommands[playerIndex].push_back(command);
+        frameNo++;
+    }
+    LOG_INFO(Input, "TAS file loaded! {} frames", frameNo);
+}
+
+void Tas::WriteTasFile() {
+    LOG_DEBUG(Input, "WriteTasFile()");
+    std::string output_text = "";
+    for (int frame = 0; frame < (signed)recordCommands.size(); frame++) {
+        if (!output_text.empty())
+            output_text += "\n";
+        TASCommand line = recordCommands.at(frame);
+        output_text += std::to_string(frame) + " " + WriteCommandButtons(line.buttons) + " " +
+                       WriteCommandAxis(line.l_axis) + " " + WriteCommandAxis(line.r_axis);
+    }
+    size_t bytesWritten = Common::FS::WriteStringToFile(
+        Common::FS::GetYuzuPathString(Common::FS::YuzuPath::TASFile) + "record.txt",
+        Common::FS::FileType::TextFile, output_text);
+    if (bytesWritten == output_text.size())
+        LOG_INFO(Input, "TAS file written to file!");
+    else
+        LOG_ERROR(Input, "Writing the TAS-file has failed! {} / {} bytes written", bytesWritten,
+                  output_text.size());
+}
+
+void Tas::RecordInput(u32 buttons, std::array<std::pair<float, float>, 2> axes) {
+    lastInput = {buttons, flipY(axes[0]), flipY(axes[1])};
+}
+
+std::pair<float, float> Tas::flipY(std::pair<float, float> old) const {
+    auto [x, y] = old;
+    return {x, -y};
+}
+
+std::string Tas::GetStatusDescription() {
+    if (Settings::values.tas_record) {
+        return "Recording TAS: " + std::to_string(recordCommands.size());
+    }
+    if (Settings::values.tas_enable) {
+        return "Playing TAS: " + std::to_string(current_command) + "/" +
+               std::to_string(scriptLength);
+    }
+    return "TAS not running: " + std::to_string(current_command) + "/" +
+           std::to_string(scriptLength);
+}
+
+std::string debugButtons(u32 buttons) {
+    return "{ " + TasInput::Tas::buttonsToString(buttons) + " }";
+}
+
+std::string debugJoystick(float x, float y) {
+    return "[ " + std::to_string(x) + "," + std::to_string(y) + " ]";
+}
+
+std::string debugInput(TasData data) {
+    return "{ " + debugButtons(data.buttons) + " , " + debugJoystick(data.axis[0], data.axis[1]) +
+           " , " + debugJoystick(data.axis[2], data.axis[3]) + " }";
+}
+
+std::string debugInputs(std::array<TasData, PLAYER_NUMBER> arr) {
+    std::string returns = "[ ";
+    for (size_t i = 0; i < arr.size(); i++) {
+        returns += debugInput(arr[i]);
+        if (i != arr.size() - 1)
+            returns += " , ";
+    }
+    return returns + "]";
+}
+
+void Tas::UpdateThread() {
+    if (update_thread_running) {
+        if (Settings::values.pauseTasOnLoad && Settings::values.cpuBoosted) {
+            for (int i = 0; i < PLAYER_NUMBER; i++) {
+                tas_data[i].buttons = 0;
+                tas_data[i].axis = {};
+            }
+        }
+
+        if (Settings::values.tas_record) {
+            recordCommands.push_back(lastInput);
+        }
+        if (!Settings::values.tas_record && !recordCommands.empty()) {
+            WriteTasFile();
+            Settings::values.tas_reset = true;
+            refresh_tas_fle = true;
+            recordCommands.clear();
+        }
+        if (Settings::values.tas_reset) {
+            current_command = 0;
+            if (refresh_tas_fle) {
+                LoadTasFiles();
+                refresh_tas_fle = false;
+            }
+            Settings::values.tas_reset = false;
+            LoadTasFiles();
+            LOG_DEBUG(Input, "tas_reset done");
+        }
+        if (Settings::values.tas_enable) {
+            if ((signed)current_command < scriptLength) {
+                LOG_INFO(Input, "Playing TAS {}/{}", current_command, scriptLength);
+                size_t frame = current_command++;
+                for (int i = 0; i < PLAYER_NUMBER; i++) {
+                    if (frame < newCommands[i].size()) {
+                        TASCommand command = newCommands[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].buttons = 0;
+                        tas_data[i].axis = {};
+                    }
+                }
+            } else {
+                Settings::values.tas_enable = false;
+                current_command = 0;
+                for (int i = 0; i < PLAYER_NUMBER; i++) {
+                    tas_data[i].buttons = 0;
+                    tas_data[i].axis = {};
+                }
+            }
+        } else {
+            for (int i = 0; i < PLAYER_NUMBER; i++) {
+                tas_data[i].buttons = 0;
+                tas_data[i].axis = {};
+            }
+        }
+    }
+    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.f;
+    const float y = std::stof(seglist.at(1)) / 32767.f;
+
+    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;
+}
+
+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