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C-/C++-Quelltext

    float fMouseSpeed= 35.0f;
    float fMoveSpeed= 50.0f;

    D3DXVECTOR3 vCameraDir= D3DXVECTOR3(sinf(fCameraAngleY)*cosf(fCameraAngleX), sinf(fCameraAngleX), cosf(fCameraAngleY)*cosf(fCameraAngleX));
    //====================================================================

    // Bewegung berechnen

    if(pDirectInput->GetMouseState()) // Maus abfragen

    {
        if (pDirectInput->GetMouseMoveX()) fCameraAngleY+= DEG_TO_RAD(1.0f)*(pDirectInput->GetMouseMoveX()*fMouseSpeed)* fTime;
        if (pDirectInput->GetMouseMoveY()) fCameraAngleX-= DEG_TO_RAD(1.0f)*(pDirectInput->GetMouseMoveY()*fMouseSpeed)* fTime;

        if (fCameraAngleY> DEG_TO_RAD(360.0f)) fCameraAngleY-= DEG_TO_RAD(360.0f);
        if (fCameraAngleY< DEG_TO_RAD(0.0f)) fCameraAngleY+= DEG_TO_RAD(360.0f);
        if (fCameraAngleX> DEG_TO_RAD(75.0f)) fCameraAngleX= DEG_TO_RAD(75.0f);
        if (fCameraAngleX< DEG_TO_RAD(-45.0f)) fCameraAngleX= DEG_TO_RAD(-45.0f);

        // Tasten 0- 7 (0 linke, 1 recht, 2 mitte)

        if (pDirectInput->IsMouseButtonPressed(DIMOUSE_LEFTBUTTON)) Beep(100,100);
    }

    if(pDirectInput->GetKeyboardState()) // Tasten abfragen

    {
        if (pDirectInput->IsKeyPressed(DIK_W)) 
        {
            vCameraPosition.x+= vCameraDir.x* fMoveSpeed* fTime;
            vCameraPosition.z+= vCameraDir.z* fMoveSpeed* fTime;
        }
        if (pDirectInput->IsKeyPressed(DIK_S)) 
        {
            vCameraPosition.x-= vCameraDir.x* fMoveSpeed* fTime;
            vCameraPosition.z-= vCameraDir.z* fMoveSpeed* fTime;
        }
    }

    //====================================================================

    // NEUE POSITIONEN BERECHNEN

    D3DXMATRIX mCamera;
    D3DXVECTOR3 vUpDown= D3DXVECTOR3(0,1,0);
    vCameraDir= vCameraDir+ vCameraPosition;
    D3DXMatrixLookAtLH(&mCamera, &vCameraPosition, &vCameraDir, &vUpDown);
    lpD3DDevice->SetTransform(D3DTS_VIEW, &mCamera);