585 lines
12 KiB
C++
585 lines
12 KiB
C++
#include "..\easy2d.h"
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#include "..\Win\winbase.h"
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#include <stack>
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#include <chrono>
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#include <thread>
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using namespace std::chrono;
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using namespace std::this_thread;
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#ifndef HINST_THISCOMPONENT
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EXTERN_C IMAGE_DOS_HEADER __ImageBase;
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#define HINST_THISCOMPONENT ((HINSTANCE)&__ImageBase)
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#endif
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EApp * s_pInstance = nullptr;
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std::stack<Scene*> s_SceneStack;
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e2d::EApp::EApp()
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: m_bRunning(false)
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, m_ClearColor(EColor::White)
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, m_bSaveScene(true)
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, m_pCurrentScene(nullptr)
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, m_pNextScene(nullptr)
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, m_pLoadingScene(nullptr)
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{
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s_pInstance = this; // 保存实例对象
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}
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e2d::EApp::~EApp()
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{
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SafeReleaseInterface(&GetFactory());
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SafeReleaseInterface(&GetRenderTarget());
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}
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EApp * e2d::EApp::get()
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{
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Assert(s_pInstance); // 断言实例存在
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return s_pInstance; // 获取 EApp 的唯一实例
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}
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bool e2d::EApp::init(EString title, ESize size, bool bShowConsole /* = false */)
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{
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return init(title, size.width, size.height, bShowConsole);
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}
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bool e2d::EApp::init(EString title, UINT32 width, UINT32 height, bool bShowConsole /* = false */)
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{
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m_sTitle = title;
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HRESULT hr;
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hr = CoInitialize(NULL);
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if (SUCCEEDED(hr))
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{
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// 关闭控制台.
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if (bShowConsole)
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{
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HWND hwnd = FindWindow(L"ConsoleWindowClass", NULL);
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if (hwnd)
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{
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hr = ShowWindow(hwnd, SW_HIDE);
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}
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}
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}
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if (SUCCEEDED(hr))
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{
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// 初始化 device-indpendent 资源
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// 比如 Direct2D factory.
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hr = CreateDeviceIndependentResources();
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if (SUCCEEDED(hr))
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{
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// 注册窗口类
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WNDCLASSEX wcex = { sizeof(WNDCLASSEX) };
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wcex.style = CS_HREDRAW | CS_VREDRAW;
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wcex.lpfnWndProc = EApp::WndProc;
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wcex.cbClsExtra = 0;
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wcex.cbWndExtra = sizeof(LONG_PTR);
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wcex.hInstance = HINST_THISCOMPONENT;
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wcex.hbrBackground = NULL;
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wcex.lpszMenuName = NULL;
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wcex.hCursor = LoadCursor(NULL, IDI_APPLICATION);
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wcex.lpszClassName = L"E2DApp";
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RegisterClassEx(&wcex);
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// Because the CreateWindow function takes its size in pixels,
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// obtain the system DPI and use it to scale the window size.
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FLOAT dpiX, dpiY;
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// The factory returns the current system DPI. This is also the value it will use
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// to create its own windows.
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GetFactory()->GetDesktopDpi(&dpiX, &dpiY);
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// Create the window.
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GetHWnd() = CreateWindow(
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L"E2DApp",
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m_sTitle.c_str(),
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WS_OVERLAPPEDWINDOW,
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CW_USEDEFAULT,
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CW_USEDEFAULT,
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static_cast<UINT>(ceil(width * dpiX / 96.f)),
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static_cast<UINT>(ceil(height * dpiY / 96.f)),
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NULL,
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NULL,
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HINST_THISCOMPONENT,
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this
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);
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hr = GetHWnd() ? S_OK : E_FAIL;
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}
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}
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return SUCCEEDED(hr);
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}
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// 运行游戏
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void e2d::EApp::run()
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{
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// 显示窗口
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ShowWindow(GetHWnd(), SW_SHOWNORMAL);
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UpdateWindow(GetHWnd());
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// 运行游戏
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m_bRunning = true;
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MSG msg;
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while (m_bRunning)
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{
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// 处理窗口消息
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if (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE))
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{
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if (msg.message == WM_QUIT)
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{
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m_bRunning = false;
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}
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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// 执行主循环
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_mainLoop();
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}
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// 关闭窗口
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close();
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// 释放所有内存占用
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free();
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}
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void e2d::EApp::_mainLoop()
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{
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static steady_clock::time_point nNow;
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static steady_clock::time_point nLast = steady_clock::now();
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// 帧间隔
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static LONGLONG nAnimationInterval = 17LL;
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// 时间间隔
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static LONGLONG nInterval = 0LL;
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// 挂起时长
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static LONGLONG nWaitMS = 0L;
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// 刷新计时
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nNow = steady_clock::now();
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// 计算时间间隔
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nInterval = duration_cast<milliseconds>(nNow - nLast).count();
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// 判断间隔时间是否足够
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if (nInterval >= nAnimationInterval)
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{
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// 记录当前时间
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nLast = nNow;
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//
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_onControl();
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// 刷新游戏画面
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_onRender();
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}
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else
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{
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// 计算挂起时长
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nWaitMS = nAnimationInterval - nInterval - 1;
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// 挂起线程，释放 CPU 占用
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if (nWaitMS > 1LL)
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{
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std::this_thread::sleep_for(milliseconds(nWaitMS));
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}
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}
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}
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void e2d::EApp::_onControl()
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{
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// 下一场景指针不为空时，切换场景
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if (m_pNextScene)
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{
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// 进入下一场景
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_enterNextScene();
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}
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// 断言当前场景非空
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Assert(m_pCurrentScene);
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//MouseMsg::__exec(); // 鼠标检测
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//KeyMsg::__exec(); // 键盘按键检测
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//Timer::__exec(); // 定时器执行程序
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//ActionManager::__exec(); // 动作管理器执行程序
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//FreePool::__flush(); // 刷新内存池
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}
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// This method discards device-specific
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// resources if the Direct3D device dissapears during execution and
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// recreates the resources the next time it's invoked.
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bool e2d::EApp::_onRender()
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{
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HRESULT hr = S_OK;
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hr = CreateDeviceResources();
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if (SUCCEEDED(hr))
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{
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GetRenderTarget()->BeginDraw();
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GetRenderTarget()->SetTransform(D2D1::Matrix3x2F::Identity());
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GetRenderTarget()->Clear(D2D1::ColorF(m_ClearColor));
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m_pCurrentScene->_onDraw(); // 绘制当前场景
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hr = GetRenderTarget()->EndDraw();
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}
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if (hr == D2DERR_RECREATE_TARGET)
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{
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hr = S_OK;
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DiscardDeviceResources();
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}
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return SUCCEEDED(hr);
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}
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void e2d::EApp::setWindowSize(int width, int height)
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{
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// 获取屏幕分辨率
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int screenWidth = GetSystemMetrics(SM_CXSCREEN);
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int screenHeight = GetSystemMetrics(SM_CYSCREEN);
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// 获取窗口大小（包含菜单栏）
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tagRECT rcWindow;
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GetWindowRect(GetHWnd(), &rcWindow);
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// 获取客户区大小
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tagRECT rcClient;
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GetClientRect(GetHWnd(), &rcClient);
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// 计算边框大小
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width += (rcWindow.right - rcWindow.left) - (rcClient.right - rcClient.left);
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height += (rcWindow.bottom - rcWindow.top) - (rcClient.bottom - rcClient.top);
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// 销毁当前窗口
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// DestroyWindow(m_);
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// 修改窗口大小，并设置窗口在屏幕居中
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SetWindowPos(
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GetHWnd(),
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HWND_TOP,
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(screenWidth - width) / 2,
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(screenHeight - height) / 2,
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width,
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height,
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SWP_SHOWWINDOW
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);
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}
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void e2d::EApp::setWindowSize(ESize size)
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{
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setWindowSize(size.width, size.height);
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}
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void e2d::EApp::setWindowTitle(EString title)
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{
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// 设置窗口标题
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SetWindowText(GetHWnd(), title.c_str());
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// 保存当前标题，用于修改窗口大小时恢复标题
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m_sTitle = title;
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}
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EString e2d::EApp::getTitle()
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{
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return m_sTitle;
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}
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int e2d::EApp::getWidth()
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{
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return GetRenderTarget()->GetPixelSize().width;
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}
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int e2d::EApp::getHeight()
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{
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return GetRenderTarget()->GetPixelSize().height;
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}
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void e2d::EApp::enterScene(Scene * scene, bool save /* = true */)
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{
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// 保存下一场景的指针
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m_pNextScene = scene;
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// 切换场景时，是否保存当前场景
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m_bSaveScene = save;
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}
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void e2d::EApp::backScene()
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{
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// 从栈顶取出场景指针，作为下一场景
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m_pNextScene = s_SceneStack.top();
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// 不保存当前场景
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m_bSaveScene = false;
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}
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void e2d::EApp::clearScene()
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{
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// 清空场景栈
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while (s_SceneStack.size())
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{
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auto temp = s_SceneStack.top();
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SafeDelete(&temp);
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s_SceneStack.pop();
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}
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}
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Scene * e2d::EApp::getCurrentScene()
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{
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return m_pCurrentScene;
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}
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Scene * e2d::EApp::getLoadingScene()
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{
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return m_pLoadingScene;
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}
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void e2d::EApp::setAppName(EString appname)
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{
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s_pInstance->m_sAppName = appname;
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}
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EString e2d::EApp::getAppName()
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{
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return s_pInstance->m_sAppName;
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}
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void EApp::setBkColor(EColor::Enum color)
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{
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m_ClearColor = color;
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}
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void e2d::EApp::close()
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{
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ShowWindow(GetHWnd(), SW_HIDE);
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}
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void e2d::EApp::show()
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{
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ShowWindow(GetHWnd(), SW_NORMAL);
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}
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void EApp::free()
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{
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// 释放场景内存
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SafeDelete(&m_pCurrentScene);
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SafeDelete(&m_pNextScene);
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// 清空场景栈
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while (s_SceneStack.size())
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{
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auto temp = s_SceneStack.top();
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SafeDelete(&temp);
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s_SceneStack.pop();
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}
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// 删除所有定时器
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//Timer::clearAllTimers();
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//MouseMsg::clearAllListeners();
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//KeyMsg::clearAllListeners();
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//ActionManager::clearAllActions();
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// 删除所有对象
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//FreePool::__clearAllObjects();
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}
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void EApp::quit()
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{
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m_bRunning = false;
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}
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void EApp::end()
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{
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m_bRunning = false;
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}
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void EApp::_enterNextScene()
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{
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bool bBackScene = false;
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// 若下一场景处于栈顶，说明正在返回上一场景
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if (s_SceneStack.size() && m_pNextScene == s_SceneStack.top())
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{
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bBackScene = true;
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// 删除栈顶场景
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s_SceneStack.pop();
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}
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// 执行当前场景的 onExit 函数
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if (m_pCurrentScene)
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{
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m_pCurrentScene->onExit();
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if (m_bSaveScene)
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{
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// 若要保存当前场景，把它放入栈中
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s_SceneStack.push(m_pCurrentScene);
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// 暂停当前场景上运行的所有定时器
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//Timer::waitAllSceneTimers(m_pCurrentScene);
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//MouseMsg::waitAllSceneListeners(m_pCurrentScene);
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//KeyMsg::waitAllSceneListeners(m_pCurrentScene);
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//ActionManager::waitAllSceneActions(m_pCurrentScene);
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}
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else
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{
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// 不保存场景时，停止当前场景上运行的所有定时器，并删除当前场景
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//Timer::clearAllSceneTimers(m_pCurrentScene);
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//MouseMsg::clearAllSceneListeners(m_pCurrentScene);
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//KeyMsg::clearAllSceneListeners(m_pCurrentScene);
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//ActionManager::stopAllSceneActions(m_pCurrentScene);
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SafeDelete(&m_pCurrentScene);
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}
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}
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m_pCurrentScene = m_pNextScene; // 切换场景
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m_pNextScene = nullptr; // 下一场景置空
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if (bBackScene)
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{
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// 返回上一场景时，恢复场景上的定时器
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//Timer::notifyAllSceneTimers(m_pCurrentScene);
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//MouseMsg::notifyAllSceneListeners(m_pCurrentScene);
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//KeyMsg::notifyAllSceneListeners(m_pCurrentScene);
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//ActionManager::notifyAllSceneActions(m_pCurrentScene);
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}
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else
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{
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m_pCurrentScene->init(); // 进入一个新场景时，执行它的 init 函数
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}
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m_pCurrentScene->onEnter(); // 执行下一场景的 onEnter 函数
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}
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// Creates resources that are not bound to a particular device.
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// Their lifetime effectively extends for the duration of the
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// application.
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HRESULT e2d::EApp::CreateDeviceIndependentResources()
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{
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HRESULT hr = S_OK;
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// Create a Direct2D factory.
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hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &GetFactory());
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return hr;
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}
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// Creates resources that are bound to a particular
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// Direct3D device. These resources need to be recreated
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// if the Direct3D device dissapears, such as when the display
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// changes, the window is remoted, etc.
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HRESULT e2d::EApp::CreateDeviceResources()
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{
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HRESULT hr = S_OK;
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if (!GetRenderTarget())
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{
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RECT rc;
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GetClientRect(GetHWnd(), &rc);
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D2D1_SIZE_U size = D2D1::SizeU(
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rc.right - rc.left,
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rc.bottom - rc.top
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);
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// Create a Direct2D render target.
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hr = GetFactory()->CreateHwndRenderTarget(
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D2D1::RenderTargetProperties(),
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D2D1::HwndRenderTargetProperties(GetHWnd(), size),
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&GetRenderTarget()
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);
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}
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return hr;
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}
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// Discards device-dependent resources. These resources must be
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// recreated when the Direct3D device is lost.
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void e2d::EApp::DiscardDeviceResources()
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{
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SafeReleaseInterface(&GetRenderTarget());
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}
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// If the application receives a WM_SIZE message, this method
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// resizes the render target appropriately.
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void e2d::EApp::_onResize(UINT width, UINT height)
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{
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if (GetRenderTarget())
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{
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// Note: This method can fail, but it's okay to ignore the
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// error here, because the error will be returned again
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// the next time EndDraw is called.
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GetRenderTarget()->Resize(D2D1::SizeU(width, height));
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}
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}
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// Handles window messages.
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LRESULT e2d::EApp::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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LRESULT result = 0;
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if (message == WM_CREATE)
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{
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LPCREATESTRUCT pcs = (LPCREATESTRUCT)lParam;
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EApp *pEApp = (EApp *)pcs->lpCreateParams;
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::SetWindowLongPtrW(
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GetHWnd(),
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GWLP_USERDATA,
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PtrToUlong(pEApp)
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);
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result = 1;
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}
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else
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{
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EApp *pEApp = reinterpret_cast<EApp *>(static_cast<LONG_PTR>(
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::GetWindowLongPtrW(
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GetHWnd(),
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GWLP_USERDATA
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)));
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bool wasHandled = false;
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if (pEApp)
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{
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switch (message)
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{
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case WM_SIZE:
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{
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UINT width = LOWORD(lParam);
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UINT height = HIWORD(lParam);
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pEApp->_onResize(width, height);
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}
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result = 0;
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wasHandled = true;
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break;
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case WM_DISPLAYCHANGE:
|
|
{
|
|
InvalidateRect(GetHWnd(), NULL, FALSE);
|
|
}
|
|
result = 0;
|
|
wasHandled = true;
|
|
break;
|
|
|
|
case WM_PAINT:
|
|
{
|
|
pEApp->_onRender();
|
|
ValidateRect(GetHWnd(), NULL);
|
|
}
|
|
result = 0;
|
|
wasHandled = true;
|
|
break;
|
|
|
|
case WM_DESTROY:
|
|
{
|
|
PostQuitMessage(0);
|
|
}
|
|
result = 1;
|
|
wasHandled = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!wasHandled)
|
|
{
|
|
result = DefWindowProc(GetHWnd(), message, wParam, lParam);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|