opengl 游戏编程 第十章

//====================================================================== /** * @file Input.cpp * * 项目描述： DirectInput输入系统 * * 文件描述: 输入系统类CInputSystem * 其中,类CKeyboard、CMouse和CJoystick分别用来处理键盘、鼠标 * 和游戏手柄，CInputSystem是输入设备的管理类。 * 适用平台： Windows98/2000/NT/XP * * 作者： WWBOSS * 电子邮件: wwboss123@gmail.com * 创建日期： 2007-07-24 * 修改日期： 2007-07-24 */ //====================================================================== #include "Input.h" //************** 键盘类CKeyboard的实现 **************************/ /** 构造函数 */ CKeyboard::CKeyboard(LPDIRECTINPUT8 pDI, HWND hwnd) { /** 创建设备对象 */ if (FAILED(pDI->CreateDevice(GUID_SysKeyboard, &m_pDIDev, NULL))) { MessageBox(NULL,"创建键盘设备对象失败！","错误",MB_OK); } /** 设置数据格式 */ if (FAILED(m_pDIDev->SetDataFormat(&c_dfDIKeyboard))) { MessageBox(NULL,"设置键盘数据格式失败！","错误",MB_OK); } /** 设置协作层次 */ if (FAILED(m_pDIDev->SetCooperativeLevel(hwnd, DISCL_FOREGROUND | DISCL_NONEXCLUSIVE))) { MessageBox(NULL,"设置键盘协作层次失败！","错误",MB_OK); } /** 捕获设置 */ if (FAILED(m_pDIDev->Acquire())) { MessageBox(NULL,"捕获键盘设备失败！","错误",MB_OK); } /** 键盘数据清零 */ Clear(); } /** 析构函数 */ CKeyboard::~CKeyboard() { if (m_pDIDev) { m_pDIDev->Unacquire(); m_pDIDev->Release(); } } /** 更新键盘数据 */ bool CKeyboard::Update() { if (FAILED(m_pDIDev->GetDeviceState(sizeof(m_keys), (LPVOID)m_keys))) { if (FAILED(m_pDIDev->Acquire())) return false; if (FAILED(m_pDIDev->GetDeviceState(sizeof(m_keys),(LPVOID)m_keys))) return false; } return TRUE; } //************** 鼠标类CMouse的实现 **************************/ /** 构造函数 */ CMouse::CMouse(LPDIRECTINPUT8 pDI, HWND hwnd, bool isExclusive) { /** 得到当前窗口的大小 */ RECT r; GetClientRect(hwnd , &r); m_iWidth = r.right - r.left; m_iHeight = r.bottom - r.top; m_iMousePos.x = m_iWidth/2; m_iMousePos.y = m_iHeight/2; /** 创建设备对象 */ if (FAILED(pDI->CreateDevice(GUID_SysMouse, &m_pDIDev, NULL))) { MessageBox(NULL,"创建鼠标设备对象失败！","错误",MB_OK); } /** 设置数据格式 */ if (FAILED(m_pDIDev->SetDataFormat(&c_dfDIMouse))) { MessageBox(NULL,"设置鼠标数据格式失败！","错误",MB_OK); } DWORD flags; if (isExclusive) flags = DISCL_FOREGROUND|DISCL_EXCLUSIVE|DISCL_NOWINKEY; else flags = DISCL_FOREGROUND|DISCL_NONEXCLUSIVE; /** 设置协作层次 */ if (FAILED(m_pDIDev->SetCooperativeLevel(hwnd, flags))) { MessageBox(NULL,"设置鼠标协作层次失败！","错误",MB_OK); } /** 设置鼠标属性 */ DIPROPDWORD dipROPWORD; dipROPWORD.diph.dwSize = sizeof(DIPROPDWORD); dipROPWORD.diph.dwHeaderSize = sizeof(DIPROPHEADER); dipROPWORD.diph.dwObj = 0; dipROPWORD.diph.dwHow = DIPH_DEVICE; dipROPWORD.dwData = DINPUT_BUFFERSIZE; if(FAILED(m_pDIDev->SetProperty(DIPROP_BUFFERSIZE,&dipROPWORD.diph))) { MessageBox(NULL,"设置鼠标设备属性失败！","错误",MB_OK); } /** 捕获设备 */ if (FAILED(m_pDIDev->Acquire())) { MessageBox(NULL,"捕获鼠标设备失败！","错误",MB_OK); } } /** 判断鼠标左键是否按下 */ bool CMouse::IsLButtonPressed() { for(int i=0;i<DINPUT_BUFFERSIZE; i++) { if((m_diData[i].dwOfs == DIMOFS_BUTTON0) && (m_diData[i].dwData & 0x80)) return true; } return false; } /** 判断鼠标右键是否按下 */ bool CMouse::IsRButtonPressed() { for(int i=0;i<DINPUT_BUFFERSIZE; i++) { if((m_diData[i].dwOfs == DIMOFS_BUTTON1) && (m_diData[i].dwData & 0x80)) return true; } return false; } /** 判断鼠标中键是否按下 */ bool CMouse::IsMButtonPressed() { for(int i=0;i<DINPUT_BUFFERSIZE; i++) { if((m_diData[i].dwOfs == DIMOFS_BUTTON2) && (m_diData[i].dwData & 0x80)) return true; } return false; } /** 析构函数 */ CMouse::~CMouse() { if (m_pDIDev) { m_pDIDev->Unacquire(); m_pDIDev->Release(); } } /** 更新鼠标参数 */ bool CMouse::Update() { HRESULT hr; DWORD dwReadNum = 1; int i; /** 清零鼠标缓冲区 */ ZeroMemory(m_diData,sizeof(DIDEVICEOBJECTDATA) * DINPUT_BUFFERSIZE); /**循环读取鼠标数据 */ for(i=0; i<DINPUT_BUFFERSIZE;i++) { hr = m_pDIDev->GetDeviceData(sizeof(DIDEVICEOBJECTDATA), &m_diData[i],&dwReadNum,0); if(hr == DIERR_INPUTLOST) { m_pDIDev->Acquire(); hr = m_pDIDev->GetDeviceData(sizeof(DIDEVICEOBJECTDATA), &m_diData[i],&dwReadNum,0); if(FAILED(hr)) { MessageBox(NULL,"取得鼠标缓冲区数据失败!","错误",MB_OK); return false; } } /** 更新鼠标位置 */ if(m_diData[i].dwOfs == DIMOFS_X) m_iMousePos.x += m_diData[i].dwData; if(m_diData[i].dwOfs == DIMOFS_Y) m_iMousePos.y += m_diData[i].dwData; /** 限制鼠标在窗口范围 */ if(m_iMousePos.x < 0) m_iMousePos.x = 0; if(m_iMousePos.x> m_iWidth) m_iMousePos.x = m_iWidth; if(m_iMousePos.y < 0) m_iMousePos.y = 0; if(m_iMousePos.y > m_iHeight) m_iMousePos.y = m_iHeight; } return true; } //************** 游戏手柄CJoystick的实现 *******************************/ CJoystick::CJoystick(LPDIRECTINPUT8 pDI,HWND hwnd,HINSTANCE appInstance) :m_iMin(-100),m_iMax(100),m_iDeadZone(20) { HRESULT hr; m_pDI = pDI; /** 枚举已安装的所有游戏杆 */ /**hr = m_pDI->EnumDevices(DI8DEVCLASS_GAMECTRL,(LPDIENUMDEVICESCALLBACKA)EnumJSCallback,&m_pDIDev,DIEDFL_ATTACHEDONLY); if(FAILED(hr)) { MessageBox(NULL,"枚举游戏杆失败!","错误",MB_OK); exit(-1); }*/ if(m_pDIDev == NULL) { MessageBox(NULL,"没有安装游戏杆!","错误",MB_OK); exit(-1); } /** 设置游戏杆的数据格式 */ hr = m_pDIDev->SetDataFormat(&c_dfDIJoystick2); if(FAILED(hr)) MessageBox(NULL,"设置游戏杆数据格式失败！","错误",MB_OK); /** 设置游戏杆的协作层级 */ hr = m_pDIDev->SetCooperativeLevel(hwnd,DISCL_BACKGROUND|DISCL_NONEXCLUSIVE); if(FAILED(hr)) MessageBox(NULL,"设置游戏杆协作层级失败！","错误",MB_OK); /** 设置游戏杆的轴范围 */ DIPROPRANGE dipROPRANGE; dipROPRANGE.diph.dwSize = sizeof(DIPROPRANGE); dipROPRANGE.diph.dwHeaderSize = sizeof(DIPROPHEADER); dipROPRANGE.diph.dwObj = 0; dipROPRANGE.diph.dwHow = DIPH_DEVICE; dipROPRANGE.lMin = m_iMin; dipROPRANGE.lMax = m_iMax; hr = m_pDIDev->SetProperty(DIPROP_RANGE,&dipROPRANGE.diph); if(FAILED(hr)) MessageBox(NULL,"设置游戏杆轴范围失败！","错误",MB_OK); /** 设置游戏杆的死区范围 */ DIPROPDWORD dipROPDWORD; dipROPDWORD.diph.dwSize = sizeof(DIPROPDWORD); dipROPDWORD.diph.dwHeaderSize = sizeof(DIPROPHEADER); dipROPDWORD.diph.dwObj = 0; dipROPDWORD.diph.dwHow = DIPH_DEVICE; dipROPDWORD.dwData = 100 * m_iDeadZone; hr = m_pDIDev->SetProperty(DIPROP_DEADZONE,&dipROPDWORD.diph); if(FAILED(hr)) MessageBox(NULL,"设置游戏杆死区范围失败！","错误",MB_OK); /** 初始化数据区 */ ZeroMemory(&m_diJoyState2,sizeof(DIJOYSTATE2)); } /** 回调函数 */ bool CALLBACK CJoystick::EnumJSCallback(LPCDIDEVICEINSTANCE pDIDeviceInstance, LPVOID pvRef) { HRESULT hr; LPDIRECTINPUTDEVICE8* ppDID = (LPDIRECTINPUTDEVICE8* )pvRef; hr = m_pDI->CreateDevice(pDIDeviceInstance->guidInstance,ppDID,NULL); if(FAILED(hr)) return DIENUM_CONTINUE; else return DIENUM_STOP; } /** 更新，获取输入 */ bool CJoystick::Update() { /** 获取游戏杆的访问权 */ HRESULT hr; hr = m_pDIDev->Acquire(); if(FAILED(hr)) { MessageBox(NULL,"获得游戏杆访问权失败！","错误",MB_OK); return false; } /** 检测游戏杆 */ hr = m_pDIDev->Poll(); if(FAILED(hr)) { MessageBox(NULL,"检测游戏杆失败！","错误",MB_OK); return false; } /** 读取游戏杆的输入 */ hr = m_pDIDev->GetDeviceState(sizeof(DIJOYSTATE2),&m_diJoyState2); /** 设备丢失 */ if(hr == DIERR_INPUTLOST) { m_pDIDev->Acquire(); /**< 重新获得设备使用权 */ m_pDIDev-