gamepp.cpp

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#include <gamepp/gamepp.h>
 
#include <string>
#include <thread>
 
using namespace gamepp;
using namespace sourcepp;
 
// All this stuff is very Windows-dependent, sorry!
#ifdef _WIN32
 
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
 
std::optional<GameInstance> GameInstance::find(std::string_view windowNameOverride) {
    GameInstance instance{};
 
    if (!windowNameOverride.empty()) {
        instance.hwnd = FindWindowA(windowNameOverride.data(), nullptr);
    } else {
        instance.hwnd = FindWindowA("Valve001", nullptr);
        if (!instance.hwnd) {
            instance.hwnd = FindWindowA("Strata001", nullptr);
        }
        // are any other names used in other branches known?
    }
 
    if (!instance.hwnd) {
        return std::nullopt;
    }
    return instance;
}
 
std::string GameInstance::getWindowTitle() const {
    // This should be large enough
    std::string title(512, '\0');
    if (auto size = GetWindowTextA(reinterpret_cast<HWND>(this->hwnd), title.data(), static_cast<int>(title.length()))) {
        title.resize(size);
        return title;
    }
    return "";
}
 
math::Vec2i GameInstance::getWindowPos() const {
    RECT rect;
    GetWindowRect(reinterpret_cast<HWND>(this->hwnd), &rect);
    return {rect.left, rect.top};
}
 
sourcepp::math::Vec2i GameInstance::getWindowSize() const {
    RECT rect;
    GetWindowRect(reinterpret_cast<HWND>(this->hwnd), &rect);
    return {rect.right - rect.left, rect.bottom - rect.top};
}
 
const GameInstance& GameInstance::command(std::string_view command) const {
    COPYDATASTRUCT data;
    data.dwData = 0;
    data.cbData = command.length() + 1;
    data.lpData = reinterpret_cast<void*>(const_cast<char*>(command.data()));
    SendMessageTimeoutA(reinterpret_cast<HWND>(this->hwnd), WM_COPYDATA, 0, reinterpret_cast<LPARAM>(&data), SMTO_ABORTIFHUNG, 0, nullptr);
    return *this;
}
 
#else
 
std::optional<GameInstance> GameInstance::find(std::string_view) {
    return std::nullopt;
}
 
std::string GameInstance::getWindowTitle() const {
    return "";
}
 
math::Vec2i GameInstance::getWindowPos() const {
    return {};
}
 
math::Vec2i GameInstance::getWindowSize() const {
    return {};
}
 
const GameInstance& GameInstance::command(std::string_view) const {
    return *this;
}
 
#endif
 
const GameInstance& GameInstance::inputBegin(std::string_view input) const {
    this->command("+" + std::string{input});
    return *this;
}
 
const GameInstance& GameInstance::inputEnd(std::string_view input) const {
    this->command("-" + std::string{input});
    return *this;
}
 
const GameInstance& GameInstance::inputOnce(std::string_view input) const {
    this->inputBegin(input).inputEnd(input);
    return *this;
}
 
const GameInstance& GameInstance::inputHold(std::string_view input, double sec) const {
    this->inputBegin(input).wait(sec).inputEnd(input);
    return *this;
}
 
const GameInstance& GameInstance::wait(double sec) const {
    std::this_thread::sleep_for(std::chrono::duration<double>(sec));
    return *this;
}