78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
/**
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* @file MainWin32.cpp
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* @brief Win32 可执行程序入口与消息泵实现。
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* @details
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* 负责设置工作目录、初始化调试内存检测，并驱动主循环：
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* - 轮询并分发 Windows 消息；
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* - 在消息空闲阶段调用 engine_update；
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* - 退出时由 engine_shutdown 完成资源收尾。
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*/
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#ifdef _WIN64
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#include "CommonHeader.h"
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#include <filesystem>
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#ifndef WIN32_MEAN_AND_LEAN
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#define WIN32_MEAN_AND_LEAN
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#endif
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#include <Windows.h>
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#include <crtdbg.h>
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namespace {
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/**
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* @brief 将当前工作目录切换到可执行文件所在目录。
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* @return 切换后的当前目录；失败时返回空路径。
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*/
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std::filesystem::path
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set_current_directory_to_executable_path()
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{
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wchar_t path[MAX_PATH]{};
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const uint32_t length{ GetModuleFileName(0, &path[0], MAX_PATH) };
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if (!length || GetLastError() == ERROR_INSUFFICIENT_BUFFER) return {};
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std::filesystem::path p{ path };
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std::filesystem::current_path(p.parent_path());
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return std::filesystem::current_path();
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}
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}
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#ifndef USE_WITH_EDITOR
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extern bool engine_initialize();
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extern void engine_update();
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extern void engine_shutdown();
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/**
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* @brief Win32 程序入口函数。
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* @return 进程退出码。
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*/
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int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
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{
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#if _DEBUG
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_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
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#endif
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set_current_directory_to_executable_path();
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if (engine_initialize())
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{
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MSG msg{};
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bool is_running{ true };
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while (is_running)
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{
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while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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is_running &= (msg.message != WM_QUIT);
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}
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engine_update();
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}
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}
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}
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#endif // USE_WITH_EDITOR
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#endif // _WIN64
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