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Game.cpp：源码内容
							// Game.cpp: implementation of the CGame class.
//
//////////////////////////////////////////////////////////////////////
#include "Game.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CGame::CGame()
{
	m_fEnableLogging = false;
	m_pD3D = NULL;
	m_pD3DDevice = NULL;
	m_dwFrames = 0;
	m_dwStartTime = 0;
	m_dwEndTime = 0;
	m_pCube1 = NULL;
	m_pCube2 = NULL;
	m_pCube3 = NULL;
	m_pCube4 = NULL;
}
CGame::~CGame()
{
	//Game finished, so record time
	if(m_dwStartTime > 0)
	{
		m_dwEndTime = timeGetTime();
	}
	else
	{
		m_dwEndTime = 0;
	}
	DWORD dwDuration = (m_dwEndTime - m_dwStartTime) / 1000;
	
	//Log stats
	WriteToLog("Statistics:");
	WriteToLog("tStart Time (ms): %d", m_dwStartTime);
	WriteToLog("tEnd Time (ms): %d", m_dwEndTime);
	WriteToLog("tDuration (s): %d", dwDuration);
	WriteToLog("tTotal Frame Count: %d", m_dwFrames);
	WriteToLog("tAverage FPS: %d", (m_dwFrames / dwDuration));
	//Clean up objects/interfaces
	SafeDelete(m_pCube1);
	SafeDelete(m_pCube2);
	SafeDelete(m_pCube3);
	SafeDelete(m_pCube4);
	
	SafeRelease(m_pD3DDevice);
	SafeRelease(m_pD3D);
}
bool CGame::Initialise(HWND hWnd, UINT nWidth, UINT nHeight)
{
	if(SUCCEEDED(InitialiseD3D(hWnd, nWidth, nHeight)))
	{
		if(InitialiseLights()) 
		{
			return InitialiseGame();
		}
		else
		{
			return false;
		}
	}
	else
	{
		return false;
	}
	return true;
}
bool CGame::InitialiseGame()
{
	//Setup games objects here
	m_pCube1 = new CCuboid(m_pD3DDevice);
	m_pCube1->SetSize(15, 15, 15);
	m_pCube1->SetTexture("1.bmp");
	m_pCube2 = new CCuboid(m_pD3DDevice);
	m_pCube2->SetSize(15, 15, 15);
	m_pCube2->SetTexture("2.bmp");
	m_pCube3 = new CCuboid(m_pD3DDevice);
	m_pCube3->SetSize(15, 15, 15);
	m_pCube3->SetTexture("3.bmp");
	m_pCube4 = new CCuboid(m_pD3DDevice);
	m_pCube4->SetSize(15, 15, 15);
	m_pCube4->SetTexture("4.bmp");
	WriteToLog("InitialiseGame Finished OK");
	return true;
}
D3DFORMAT CGame::CheckDisplayMode(UINT nWidth, UINT nHeight, UINT nDepth)
{
	UINT x;
	D3DDISPLAYMODE d3ddm;
	for(x = 0; x < m_pD3D->GetAdapterModeCount(0); x++)
	{
		m_pD3D->EnumAdapterModes(0, x, &d3ddm);
		if(d3ddm.Width == nWidth)
		{
			if(d3ddm.Height == nHeight)
			{
				if((d3ddm.Format == D3DFMT_R5G6B5) || (d3ddm.Format == D3DFMT_X1R5G5B5) || (d3ddm.Format == D3DFMT_X4R4G4B4))
				{
					if(nDepth == 16)
					{
						return d3ddm.Format;
					}
				}
				else if((d3ddm.Format == D3DFMT_R8G8B8) || (d3ddm.Format == D3DFMT_X8R8G8B8))
				{
					if(nDepth == 32)
					{
						return d3ddm.Format;
					}
				}
			}
		}
	}
	return D3DFMT_UNKNOWN;
}
HRESULT CGame::InitialiseD3D(HWND hWnd, UINT nWidth, UINT nHeight)
{
	WriteToLog("InitialiseD3D Started...");
    //First of all, create the main D3D object. If it is created successfully we 
    //should get a pointer to an IDirect3D8 interface.
    m_pD3D = Direct3DCreate8(D3D_SDK_VERSION);
    if(m_pD3D == NULL)
    {
		WriteToLog("tUnable to create DirectX8 interface.");
        return E_FAIL;
    }
    //Get the current display mode
    D3DDISPLAYMODE d3ddm;
	d3ddm.Format = CheckDisplayMode(nWidth, nHeight, 32);
	if(d3ddm.Format != D3DFMT_UNKNOWN)
	{
		//Width x Height x 32bit has been selected
		d3ddm.Width = nWidth;
		d3ddm.Height = nHeight;
		WriteToLog("t%d x %d x 32bit back buffer format selected. Format = %d.", nWidth, nHeight, d3ddm.Format);
	}
	else
	{
		d3ddm.Format = CheckDisplayMode(nWidth, nHeight, 16);
		if(d3ddm.Format != D3DFMT_UNKNOWN)
		{
            //Width x Height x 16bit has been selected
			d3ddm.Width = nWidth;
			d3ddm.Height = nHeight;
			WriteToLog("t%d x %d x 16bit back buffer format selected. Format = %d.", nWidth, nHeight, d3ddm.Format);
		}
        else
		{
			WriteToLog("tUnable to select back buffer format for %d x %d.", nWidth, nHeight);
            return E_FAIL;
        }
	}
    //Create a structure to hold the settings for our device
    D3DPRESENT_PARAMETERS d3dpp; 
    ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.Windowed = FALSE;
    d3dpp.BackBufferCount = 1;
    d3dpp.BackBufferFormat = d3ddm.Format;
    d3dpp.BackBufferWidth = d3ddm.Width;
    d3dpp.BackBufferHeight = d3ddm.Height;
    d3dpp.hDeviceWindow = hWnd;
    d3dpp.SwapEffect = D3DSWAPEFFECT_COPY_VSYNC;
	d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
    d3dpp.FullScreen_PresentationInterval = D3DPRESENT_INTERVAL_ONE;
	//Select the best depth buffer, select 32, 24 or 16 bit
    if(m_pD3D->CheckDeviceFormat(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, d3ddm.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, D3DFMT_D32) == D3D_OK)
	{
        d3dpp.AutoDepthStencilFormat = D3DFMT_D32;
        d3dpp.EnableAutoDepthStencil = TRUE;
		WriteToLog("t32bit depth buffer selected");
    }
    else if(m_pD3D->CheckDeviceFormat(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, d3ddm.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, D3DFMT_D24X8) == D3D_OK)
    {
		d3dpp.AutoDepthStencilFormat = D3DFMT_D24X8;
        d3dpp.EnableAutoDepthStencil = TRUE;
		WriteToLog("t24bit depth buffer selected");
	}
    else if(m_pD3D->CheckDeviceFormat(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, d3ddm.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, D3DFMT_D16) == D3D_OK)
    {
		d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
        d3dpp.EnableAutoDepthStencil = TRUE;
		WriteToLog("t16bit depth buffer selected");
	}
    else
	{
        d3dpp.EnableAutoDepthStencil = FALSE;
		WriteToLog("tUnable to select depth buffer.");
	}
    //Create a Direct3D device.
    if(FAILED(m_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, 
                                   D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &m_pD3DDevice)))
    {
		WriteToLog("tUnable to create device.");
        return E_FAIL;
    }
    
	//Turn on back face culling. This is becuase we want to hide the back of our polygons
    m_pD3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
	//Turn on Depth Buffering
    m_pD3DDevice->SetRenderState(D3DRS_ZENABLE, D3DZB_TRUE);
	WriteToLog("InitialiseD3D Finished OK");
    return S_OK;
}
bool CGame::InitialiseLights()
{
	WriteToLog("InitialiseLights Started...");
	
	D3DLIGHT8 d3dLight;
	//Initialize the light structure.
	ZeroMemory(&d3dLight, sizeof(D3DLIGHT8));
	//Set up a white point light at (0, 0, -10).
	d3dLight.Type = D3DLIGHT_POINT;
	d3dLight.Diffuse.r = 1.0f;
	d3dLight.Diffuse.g = 1.0f;
	d3dLight.Diffuse.b = 1.0f;
	
	d3dLight.Ambient.r = 0.0f;
	d3dLight.Ambient.g = 0.0f;
	d3dLight.Ambient.b = 0.0f;
	
	d3dLight.Specular.r = 0.0f;
	d3dLight.Specular.g	= 0.0f;
	d3dLight.Specular.b	= 0.0f;
	d3dLight.Position.x	= 0.0f;
	d3dLight.Position.y	= 0.0f;
	d3dLight.Position.z	= -10.0f;
	d3dLight.Attenuation0 = 1.0f; 
	d3dLight.Attenuation1 = 0.0f; 
	d3dLight.Attenuation2 = 0.0f; 
	d3dLight.Range = 100.0f;
	//Assign the point light to our device in poisition (index) 0
	if(FAILED(m_pD3DDevice->SetLight(0, &d3dLight)))
	{
		WriteToLog("tSetLight Failed");
		return false;
	}
	else
	{
		WriteToLog("tSetLight OK");
	}
	//Enable our point light in position (index) 0
	if(FAILED(m_pD3DDevice->LightEnable(0, TRUE)))
	{
		WriteToLog("tLightEnable Failed");
		return false;
	}
	else
	{
		WriteToLog("tLightEnable OK");
	}
	//Turn on lighting
    if(FAILED(m_pD3DDevice->SetRenderState(D3DRS_LIGHTING, TRUE)))
	{
		WriteToLog("tSetRenderState: D3DRS_LIGHTING Failed");
		return false;
	}
	else
	{
		WriteToLog("tSetRenderState: D3DRS_LIGHTING OK");
	}
	//Set ambient light level
	if(FAILED(m_pD3DDevice->SetRenderState(D3DRS_AMBIENT, D3DCOLOR_XRGB(32, 32, 32))))	
	{
		WriteToLog("tSetRenderState: D3DRS_AMBIENT Failed");
		return false;
	}
	else
	{
		WriteToLog("tSetRenderState: D3DRS_AMBIENT OK");
	}
	WriteToLog("InitialiseLights Finished OK");
	return true;
}
LPDIRECT3DDEVICE8 CGame::GetDevice()
{
	return m_pD3DDevice;
}
void CGame::GameLoop()
{
    //Enter the game loop
    MSG msg; 
    BOOL fMessage;
    PeekMessage(&msg, NULL, 0U, 0U, PM_NOREMOVE);
	//Game started, so record time
	m_dwStartTime = timeGetTime();
    while(msg.message != WM_QUIT)
    {
        fMessage = PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE);
        if(fMessage)
        {
            //Process message
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
        else
        {
            //No message to process, so render the current scene
            Render();
        }
    }
}
void CGame::Render()
{
    D3DXMATRIX matRotationUser1, matRotationUser2, matRotationUser3, matRotationUser4;
	D3DXMATRIX matMoveRight20, matMoveLeft20, matMoveUp20, matMoveDown20;
	D3DXMATRIX matTransformation1, matTransformation2, matTransformation3, matTransformation4;
	if(m_pD3DDevice == NULL)
    {
        return;
    }
    //Clear the back buffer and depth buffer
    m_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
    
    //Begin the scene
    m_pD3DDevice->BeginScene();
    
	//Setup camera and perspective
	SetupCamera();
	//Create the rotation transformation matrices around our user defined axis
	D3DXMatrixRotationAxis(&matRotationUser1, &D3DXVECTOR3(1.0f, 1.0f, 0.0f), timeGetTime()/400.0f);
	D3DXMatrixRotationAxis(&matRotationUser2, &D3DXVECTOR3(1.0f, -1.0f, 0.0f), timeGetTime()/400.0f);
	D3DXMatrixRotationAxis(&matRotationUser3, &D3DXVECTOR3(-1.0f, 1.0f, 0.0f), timeGetTime()/400.0f);
	D3DXMatrixRotationAxis(&matRotationUser4, &D3DXVECTOR3(-1.0f, -1.0f, 0.0f), timeGetTime()/400.0f);
	//Create the translation (move) matrices
	D3DXMatrixTranslation(&matMoveRight20, 20.0, 0.0, 0.0);
	D3DXMatrixTranslation(&matMoveLeft20, -20.0, 0.0, 0.0);
	D3DXMatrixTranslation(&matMoveUp20,	0.0, 20.0, 0.0);
	D3DXMatrixTranslation(&matMoveDown20, 0.0, -20.0, 0.0);
	
	//Combine the matrices to form 4 transformation matrices
	D3DXMatrixMultiply(&matTransformation1, &matRotationUser1, &matMoveLeft20);
	D3DXMatrixMultiply(&matTransformation2, &matRotationUser2, &matMoveRight20);
	D3DXMatrixMultiply(&matTransformation3, &matRotationUser3, &matMoveUp20);
	D3DXMatrixMultiply(&matTransformation4, &matRotationUser4, &matMoveDown20);
	
    //Apply the transformations and render our objects
	m_pD3DDevice->SetTransform(D3DTS_WORLD, &matTransformation1);
    m_pCube1->Render();
	m_pD3DDevice->SetTransform(D3DTS_WORLD, &matTransformation2);
	m_pCube2->Render();
	m_pD3DDevice->SetTransform(D3DTS_WORLD, &matTransformation3);
	m_pCube3->Render();
	m_pD3DDevice->SetTransform(D3DTS_WORLD, &matTransformation4);
	m_pCube4->Render();
    //End the scene
    m_pD3DDevice->EndScene();
    
    //Filp the back and front buffers so that whatever has been rendered on the back buffer
    //will now be visible on screen (front buffer).
    m_pD3DDevice->Present(NULL, NULL, NULL, NULL);
	//Count Frames
	m_dwFrames++;
}
void CGame::SetupCamera()
{
	//Here we will setup the camera.
	//The camera has three settings: "Camera Position", "Look at Position" and "Up Direction"
	//We have set the following:
	//Camera Position:	(0, 0, -100)
	//Look at Position: (0, 0, 0)
	//Up direction:		Y-Axis.
    D3DXMATRIX matView;
    D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3(0.0f, 0.0f,-100.0f),		//Camera Position
                                 &D3DXVECTOR3(0.0f, 0.0f, 0.0f),		//Look At Position
                                 &D3DXVECTOR3(0.0f, 1.0f, 0.0f));		//Up Direction
    m_pD3DDevice->SetTransform(D3DTS_VIEW, &matView);
	//Here we specify the field of view, aspect ration and near and far clipping planes.
    D3DXMATRIX matProj;
    D3DXMatrixPerspectiveFovLH(&matProj, D3DX_PI/4, 1.0f, 1.0f, 500.0f);
    m_pD3DDevice->SetTransform(D3DTS_PROJECTION, &matProj);
}
void CGame::WriteToLog(char *lpszText, ...)
{
	if(m_fEnableLogging)
	{
		va_list argList;
		FILE *pFile;
		//Initialize variable argument list
		va_start(argList, lpszText);
		//Open the log file for appending
		pFile = fopen("log.txt", "a+");
		//Write the text and a newline
		vfprintf(pFile, lpszText, argList);
		putc('n', pFile);
		//Close the file
		fclose(pFile);
		va_end(argList);
	}
}
void CGame::EnableLogging()
{
	m_fEnableLogging = true;
	
	FILE* pFile;
	//Clear the file contents
	pFile = fopen("log.txt", "wb");
	//Close it up and return success
	fclose(pFile);
}

						