DynamicFPS.cpp

// Updated 1:52 UTC+8 by Leqixn

#include "DynamicFPS.hpp"
#include "SDK/SDK.hpp"
#include <Windows.h>

void DynamicFPS::onTick() {
    if (!enabled.boolValue) return;

    auto context = GameContext::getInstance();
    if (!context || !context->getClientInstance()) return;

    auto options = context->getClientInstance()->getOptions();
    if (!options) return;

    HWND foreground = GetForegroundWindow();
    char className[256];
    if (GetClassNameA(foreground, className, sizeof(className))) {
        
        bool isGameFocused = (strcmp(className, "ApplicationFrameWindow") == 0 || 
                              strcmp(className, "Windows.UI.Core.CoreWindow") == 0);

        bool shouldThrottle = !isGameFocused || isAFK();

        if (shouldThrottle) {
            if (!isThrottled) {
                originalLimit = options->framerateLimit;
                isThrottled = true;
            }
            options->framerateLimit = !isGameFocused ? (int)unfocusedFPS.floatValue : (int)afkFPS.floatValue;
        } 
        else if (isThrottled) {
            if (originalLimit.has_value()) {
                options->framerateLimit = originalLimit.value();
            }
            isThrottled = false;
        }
    }
}

bool DynamicFPS::isAFK() const {
    LASTINPUTINFO lii = { sizeof(LASTINPUTINFO) };
    if (GetLastInputInfo(&lii)) {
        uint64_t idleSeconds = (GetTickCount64() - lii.dwTime) / 1000;
        return idleSeconds >= static_cast<uint64_t>(afkTimeout.floatValue);
    }
    return false;
}

void DynamicFPS::onDisable() {
    if (isThrottled && originalLimit.has_value()) {
        auto context = GameContext::getInstance();
        if (context && context->getClientInstance()) {
            auto options = context->getClientInstance()->getOptions();
            if (options) {
                options->framerateLimit = originalLimit.value();
            }
        }
    }
    isThrottled = false;
}