132 lines
2.5 KiB
C++
132 lines
2.5 KiB
C++
#include <STDInclude.hpp>
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namespace Components
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{
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void FrameTime::NetSleep(int msec)
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{
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if (msec < 0) msec = 0;
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fd_set fdr;
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FD_ZERO(&fdr);
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SOCKET highestfd = INVALID_SOCKET;
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if (*Game::ip_socket != INVALID_SOCKET)
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{
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FD_SET(*Game::ip_socket, &fdr);
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highestfd = *Game::ip_socket;
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}
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if (highestfd == INVALID_SOCKET)
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{
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// windows ain't happy when select is called without valid FDs
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std::this_thread::sleep_for(std::chrono::milliseconds(msec));
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return;
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}
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timeval timeout;
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timeout.tv_sec = msec / 1000;
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timeout.tv_usec = (msec % 1000) * 1000;
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int retval = select(highestfd + 1, &fdr, nullptr, nullptr, &timeout);
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if (retval == SOCKET_ERROR)
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{
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Logger::Warning(Game::CON_CHANNEL_SYSTEM, "Select() syscall failed: {}\n", Game::NET_ErrorString());
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}
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else if (retval > 0)
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{
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// process packets
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if (Dvar::Var(0x1AD7934).get<bool>()) // com_sv_running
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{
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Utils::Hook::Call<void()>(0x458160)();
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}
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else
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{
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Utils::Hook::Call<void()>(0x49F0B0)();
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}
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}
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}
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void FrameTime::SVFrameWaitFunc()
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{
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int sv_residualTime = *reinterpret_cast<int*>(0x2089E14);
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if (sv_residualTime < 50)
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{
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FrameTime::NetSleep(50 - sv_residualTime);
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}
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}
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void __declspec(naked) FrameTime::SVFrameWaitStub()
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{
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__asm
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{
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pushad
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call FrameTime::SVFrameWaitFunc
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popad
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push 4CD420h
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retn
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}
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}
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int FrameTime::ComTimeVal(int minMsec)
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{
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int timeVal = Game::Sys_Milliseconds() - *reinterpret_cast<uint32_t*>(0x1AD8F3C); // com_frameTime
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return (timeVal >= minMsec ? 0 : minMsec - timeVal);
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}
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uint32_t FrameTime::ComFrameWait(int minMsec)
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{
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int timeVal;
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do
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{
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timeVal = FrameTime::ComTimeVal(minMsec);
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FrameTime::NetSleep(timeVal < 1 ? 0 : timeVal - 1);
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} while (FrameTime::ComTimeVal(minMsec));
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uint32_t lastTime = *Game::com_frameTime;
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Utils::Hook::Call<void()>(0x43D140)(); // Com_EventLoop
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*Game::com_frameTime = Game::Sys_Milliseconds();
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return *Game::com_frameTime - lastTime;
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}
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void __declspec(naked) FrameTime::ComFrameWaitStub()
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{
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__asm
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{
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push ecx
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pushad
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push edi
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call FrameTime::ComFrameWait
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add esp, 4
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mov [esp + 20h], eax
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popad
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pop eax
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mov ecx, eax
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mov edx, 1AD7934h // com_sv_running
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cmp byte ptr[edx + 10h], 0
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push 47DDC1h
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retn
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}
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}
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FrameTime::FrameTime()
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{
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if (Dedicated::IsEnabled())
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{
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Utils::Hook(0x4BAAAD, FrameTime::SVFrameWaitStub, HOOK_CALL).install()->quick();
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}
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else
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{
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Utils::Hook(0x47DD80, FrameTime::ComFrameWaitStub, HOOK_JUMP).install()->quick();
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}
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}
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}
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