游戏

开发平台：
Visual C++

gamemenu.cpp：源码内容
							//-----------------------------------------------------------------------------
// File: GameMenu.cpp
//
// Copyright (C) Microsoft Corporation. All Rights Reserved.
//-----------------------------------------------------------------------------
#include "stdafx.h"
//-----------------------------------------------------------------------------
// Name: 
// Desc: 
//-----------------------------------------------------------------------------
CMenuItem::CMenuItem( TCHAR* strNewLabel, DWORD dwNewID )
{
    _tcscpy( strLabel, strNewLabel );
    dwID           = dwNewID;
    pParent        = NULL;
    dwNumChildren  = 0L;
    dwSelectedMenu = 0L;
}
//-----------------------------------------------------------------------------
// Name: 
// Desc: 
//-----------------------------------------------------------------------------
CMenuItem::~CMenuItem()
{
    while( dwNumChildren )
        delete pChild[--dwNumChildren];
}
//-----------------------------------------------------------------------------
// Name: 
// Desc: 
//-----------------------------------------------------------------------------
CMenuItem* CMenuItem::Add( CMenuItem* pNewChild )
{
    pChild[dwNumChildren++] = pNewChild;
    pNewChild->pParent = this;
    return pNewChild;
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: 
//-----------------------------------------------------------------------------
HRESULT CMenuItem::Render( CD3DFont* pFont )
{
    // Check parameters
    if( NULL == pFont )
        return E_INVALIDARG;
    // Save current matrices
    D3DXMATRIX matViewSaved, matProjSaved;
    g_pd3dDevice->GetTransform( D3DTS_VIEW,       &matViewSaved );
    g_pd3dDevice->GetTransform( D3DTS_PROJECTION, &matProjSaved );
    // Setup new view and proj matrices for head-on viewing
    D3DXMATRIX matView, matProj;
    D3DXVECTOR3 vAt = D3DXVECTOR3(0.0f,0.0f,-30.0f);
    D3DXVECTOR3 vLookAt = D3DXVECTOR3(0.0f,0.0f,0.0f);
    D3DXVECTOR3 vUp = D3DXVECTOR3(0.0f,1.0f,0.0f);
    
    D3DXMatrixLookAtLH( &matView, &vAt, &vLookAt, &vUp );
    D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f );
    g_pd3dDevice->SetTransform( D3DTS_VIEW,       &matView );
    g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
    // Establish colors for selected vs. normal menu items
    D3DMATERIAL9 mtrlNormal, mtrlSelected, mtrlTitle;
    ZeroMemory( &mtrlTitle, sizeof(D3DMATERIAL9) );
    mtrlTitle.Diffuse.r = mtrlTitle.Ambient.r = 1.0f;
    mtrlTitle.Diffuse.g = mtrlTitle.Ambient.g = 0.0f;
    mtrlTitle.Diffuse.b = mtrlTitle.Ambient.b = 0.0f;
    mtrlTitle.Diffuse.a = mtrlTitle.Ambient.a = 1.0f;
    ZeroMemory( &mtrlNormal, sizeof(D3DMATERIAL9) );
    mtrlNormal.Diffuse.r = mtrlNormal.Ambient.r = 1.0f;
    mtrlNormal.Diffuse.g = mtrlNormal.Ambient.g = 1.0f;
    mtrlNormal.Diffuse.b = mtrlNormal.Ambient.b = 1.0f;
    mtrlNormal.Diffuse.a = mtrlNormal.Ambient.a = 0.5f;
    ZeroMemory( &mtrlSelected, sizeof(D3DMATERIAL9) );
    mtrlSelected.Diffuse.r = mtrlSelected.Ambient.r = 1.0f;
    mtrlSelected.Diffuse.g = mtrlSelected.Ambient.g = 1.0f;
    mtrlSelected.Diffuse.b = mtrlSelected.Ambient.b = 0.0f;
    mtrlSelected.Diffuse.a = mtrlSelected.Ambient.a = 1.0f;
    g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, TRUE );
    g_pd3dDevice->SetRenderState( D3DRS_AMBIENT,  0xffffffff );
    // Translate the menuitem into place
    D3DXMATRIX matWorld;
    D3DXMatrixScaling( &matWorld, 0.4f, 0.4f, 0.4f );
    matWorld._42 = (dwNumChildren*1.0f) + 2.0f;
    g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
    g_pd3dDevice->SetMaterial( &mtrlTitle );
    // Render the menuitem's label
    pFont->Render3DText( strLabel, D3DFONT_CENTERED_X|D3DFONT_TWOSIDED );
    // Loop through and render all menuitem lables
    for( DWORD i=0; i<dwNumChildren; i++ )
    {
        D3DXMATRIX matWorld;
        D3DXMatrixScaling( &matWorld, 0.3f, 0.3f, 0.3f );
        g_pd3dDevice->SetMaterial( &mtrlNormal );
        // Give a different effect for selected items
        if( dwSelectedMenu == i )
        {
            D3DXMATRIX matRotate;
            D3DXMatrixRotationY( &matRotate, (D3DX_PI/3)*sinf(timeGetTime()/200.0f) );
            D3DXMatrixMultiply( &matWorld, &matWorld, &matRotate );
            g_pd3dDevice->SetMaterial( &mtrlSelected );
        }
        // Translate the menuitem into place
        matWorld._42 = (dwNumChildren*1.0f) - (i*2.0f);
        g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
        // Render the menuitem's label
        pFont->Render3DText( pChild[i]->strLabel, 
                             D3DFONT_CENTERED_X|D3DFONT_TWOSIDED );
    }
    // Restore matrices
    g_pd3dDevice->SetTransform( D3DTS_VIEW,       &matViewSaved );
    g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProjSaved );
    return S_OK;
}

						