395 lines
7.4 KiB
C++
395 lines
7.4 KiB
C++
#include "..\easy2d.h"
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#include "..\EasyX\easyx.h"
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#include <time.h>
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#include <assert.h>
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#include <imm.h>
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#pragma comment(lib, "imm32.lib")
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#include <mmsystem.h>
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#pragma comment(lib, "winmm.lib")
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// App 的唯一实例
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static App * s_pInstance = nullptr;
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// 坐标原点的物理坐标
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static int originX = 0;
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static int originY = 0;
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App::App() :
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m_CurrentScene(nullptr),
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m_NextScene(nullptr),
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m_bRunning(false),
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m_nWindowMode(0)
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{
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assert(!s_pInstance); // 不能同时存在两个 App 实例
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s_pInstance = this; // 保存实例对象
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setFPS(60); // 默认 FPS 为 60
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}
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App::~App()
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{
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destory(); // 销毁 App
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}
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App * App::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 App 的唯一实例
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}
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void App::setOrigin(int originX, int originY)
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{
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::originX = originX;
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::originY = originY;
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setorigin(originX, originY);
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}
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int App::getOriginX()
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{
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return ::originX;
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}
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int App::getOriginY()
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{
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return ::originY;
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}
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int App::run()
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{
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// 开启批量绘图
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BeginBatchDraw();
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// 修改时间精度
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timeBeginPeriod(1);
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// 获取 CPU 每秒滴答声个数
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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// 创建时间变量
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LARGE_INTEGER nLast;
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LARGE_INTEGER nNow;
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// 记录当前时间
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QueryPerformanceCounter(&nLast);
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// 时间间隔
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LONGLONG interval = 0LL;
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// 挂起时长
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LONG waitMS = 0L;
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// 将隐藏的窗口显示
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ShowWindow(GetHWnd(), SW_NORMAL);
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// 运行游戏
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m_bRunning = true;
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// 进入主循环
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while (m_bRunning)
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{
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// 获取当前时间
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QueryPerformanceCounter(&nNow);
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// 计算时间间隔
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interval = nNow.QuadPart - nLast.QuadPart;
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// 判断间隔时间是否足够
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if (interval >= m_nAnimationInterval.QuadPart)
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{
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// 记录当前时间
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nLast.QuadPart = nNow.QuadPart;
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// 执行游戏逻辑
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_mainLoop();
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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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waitMS = LONG((m_nAnimationInterval.QuadPart - interval) * 1000LL / freq.QuadPart) - 1L;
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// 挂起线程，释放 CPU 占用
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if (waitMS > 1L)
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Sleep(waitMS);
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}
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}
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// 停止批量绘图
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EndBatchDraw();
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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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destory();
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// 重置时间精度
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timeEndPeriod(1);
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return 0;
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}
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void App::_initGraph()
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{
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// 创建绘图环境
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initgraph(m_Size.cx, m_Size.cy, m_nWindowMode);
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// 隐藏当前窗口（防止在加载阶段显示黑窗口）
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ShowWindow(GetHWnd(), SW_HIDE);
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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
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CRect rcWindow;
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GetWindowRect(GetHWnd(), &rcWindow);
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// 设置窗口在屏幕居中
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SetWindowPos(GetHWnd(), HWND_TOP,
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(screenWidth - rcWindow.Size().cx) / 2,
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(screenHeight - rcWindow.Size().cy) / 2,
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rcWindow.Size().cx,
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rcWindow.Size().cy,
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SWP_HIDEWINDOW | SWP_NOACTIVATE | SWP_NOSIZE);
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// 禁用输入法
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ImmAssociateContext(GetHWnd(), NULL);
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// 重置绘图环境
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reset();
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// 设置窗口标题
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if (m_sTitle.empty())
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{
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// 保存当前标题
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TCHAR title[31];
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GetWindowText(GetHWnd(), title, 30);
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m_sTitle = title;
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m_sAppName = title;
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}
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else
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{
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setWindowTitle(m_sTitle);
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}
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}
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void App::_mainLoop()
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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_NextScene)
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{
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// 执行当前场景的 onExit 函数
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if (m_CurrentScene)
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{
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m_CurrentScene->onExit();
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}
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// 进入下一场景
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_enterNextScene();
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// 执行当前场景的 onEnter 函数
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m_CurrentScene->onEnter();
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}
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// 断言当前场景非空
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assert(m_CurrentScene);
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cleardevice(); // 清空画面
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m_CurrentScene->_onDraw(); // 绘制当前场景
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FlushBatchDraw(); // 刷新画面
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// 其他执行程序
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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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void App::createWindow(int width, int height, int mode)
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{
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// 保存窗口信息
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m_Size.cx = width;
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m_Size.cy = height;
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m_nWindowMode = mode;
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// 创建窗口
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_initGraph();
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}
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void App::createWindow(CSize size, int mode)
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{
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createWindow(size.cx, size.cy, mode);
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}
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void App::createWindow(tstring title, int width, int height, int mode)
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{
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// 保存窗口信息
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m_Size.cx = width;
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m_Size.cy = height;
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m_nWindowMode = mode;
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m_sTitle = title;
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m_sAppName = title;
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// 创建窗口
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_initGraph();
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}
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void App::createWindow(tstring title, CSize size, int mode)
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{
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createWindow(title, size.cx, size.cy, mode);
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}
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void App::setWindowSize(int width, int height)
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{
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// 游戏正在运行时才允许修改窗口大小
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assert(s_pInstance->m_bRunning);
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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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CRect rcWindow;
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GetWindowRect(GetHWnd(), &rcWindow);
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// 获取客户区大小
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CRect 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(GetHWnd());/* 无法操作多线程导致失效 */
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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(GetHWnd(), 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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// 重置窗口属性
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reset();
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}
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void App::setWindowSize(CSize size)
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{
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setWindowSize(size.cx, size.cy);
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}
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void App::setWindowTitle(tstring 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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s_pInstance->m_sTitle = title;
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}
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tstring App::getWindowTitle()
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{
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return s_pInstance->m_sTitle;
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}
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void App::close()
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{
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closegraph(); // 关闭绘图环境
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}
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void App::enterScene(Scene * scene, bool save)
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{
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// 保存下一场景的指针
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s_pInstance->m_NextScene = scene;
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// 切换场景时，是否保存当前场景
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s_pInstance->m_bSaveScene = save;
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}
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void App::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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s_pInstance->m_NextScene = s_pInstance->m_SceneStack.top();
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// 不保存当前场景
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s_pInstance->m_bSaveScene = false;
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}
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void App::clearScene()
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{
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// 清空场景栈
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while (s_pInstance->m_SceneStack.size())
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{
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auto temp = s_pInstance->m_SceneStack.top();
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SAFE_DELETE(temp);
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s_pInstance->m_SceneStack.pop();
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}
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}
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void App::setAppName(tstring appname)
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{
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s_pInstance->m_sAppName = appname;
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}
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tstring App::getAppName()
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{
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return s_pInstance->m_sAppName;
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}
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void App::setBkColor(COLORREF color)
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{
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setbkcolor(color);
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}
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void App::_enterNextScene()
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{
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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 (m_SceneStack.size() && m_NextScene == m_SceneStack.top())
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{
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m_SceneStack.pop(); // 删除栈顶场景
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}
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if (m_bSaveScene)
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{
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m_SceneStack.push(m_CurrentScene); // 若要保存当前场景，把它的指针放到栈顶
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}
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else
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{
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SAFE_DELETE(m_CurrentScene); // 否则删除当前场景
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}
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m_CurrentScene = m_NextScene; // 切换场景
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m_NextScene = nullptr; // 下一场景置空
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}
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void App::quit()
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{
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s_pInstance->m_bRunning = false;
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}
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void App::end()
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{
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s_pInstance->m_bRunning = false;
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}
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void App::reset()
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{
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// 重置绘图环境
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graphdefaults();
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setbkmode(TRANSPARENT);
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setbkcolor(Color::black);
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}
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Scene * App::getCurrentScene()
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{
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// 获取当前场景的指针
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return s_pInstance->m_CurrentScene;
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}
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void App::setFPS(DWORD fps)
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{
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// 设置画面帧率，以毫秒为单位
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LARGE_INTEGER nFreq;
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QueryPerformanceFrequency(&nFreq);
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s_pInstance->m_nAnimationInterval.QuadPart = (LONGLONG)(1.0 / fps * nFreq.QuadPart);
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}
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int App::getWidth()
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{
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return s_pInstance->m_Size.cx;
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}
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int App::getHeight()
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{
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return s_pInstance->m_Size.cy;
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}
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void App::free()
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{
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// 释放场景内存
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SAFE_DELETE(m_CurrentScene);
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SAFE_DELETE(m_NextScene);
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// 清空场景栈
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while (m_SceneStack.size())
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{
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auto temp = m_SceneStack.top();
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SAFE_DELETE(temp);
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m_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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}
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void App::destory()
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{
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// 释放所有内存
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free();
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// 实例指针置空
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s_pInstance = nullptr;
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}
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