windows-nt/Source/XPSP1/NT/shell/osshell/control/scrnsave/pipes/fstate.cpp

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2020-09-26 03:20:57 -05:00
//-----------------------------------------------------------------------------
// File: fstate.cpp
//
// Desc: FLEX_STATE
//
// Copyright (c) 1994-2000 Microsoft Corporation
//-----------------------------------------------------------------------------
#include "stdafx.h"
//-----------------------------------------------------------------------------
// Name: FLEX_STATE constructor
// Desc:
//-----------------------------------------------------------------------------
FLEX_STATE::FLEX_STATE( STATE *pMainState )
{
m_pMainState = pMainState;
Reset();
}
//-----------------------------------------------------------------------------
// Name: Reset
// Desc: Reset a frame of normal pipes.
//-----------------------------------------------------------------------------
void FLEX_STATE::Reset( )
{
// Choose a random scheme for each frame
if( CPipesScreensaver::iRand(2) ) // 50/50
m_scheme = SC_EXTRUDED_XC;
else
m_scheme = SC_TURNOMANIA;
}
//-----------------------------------------------------------------------------
// Name: OKToUseChase
// Desc: Determines if we can use chase mode for flex pipes
//-----------------------------------------------------------------------------
BOOL FLEX_STATE::OKToUseChase()
{
return m_scheme != SC_TURNOMANIA;
}
//-----------------------------------------------------------------------------
// Name: NewPipe
// Desc: Create a new pipe, based on current drawing scheme
//-----------------------------------------------------------------------------
PIPE* FLEX_STATE::NewPipe( STATE *pState )
{
if( m_scheme == SC_TURNOMANIA )
return new TURNING_FLEX_PIPE( pState );
else
return new REGULAR_FLEX_PIPE( pState );
}
//-----------------------------------------------------------------------------
// Name: GetMaxPipesPerFrame
// Desc:
//-----------------------------------------------------------------------------
int FLEX_STATE::GetMaxPipesPerFrame( )
{
if( m_scheme == SC_TURNOMANIA )
{
return TURNOMANIA_PIPE_COUNT;
}
else
{
return m_pMainState->m_bUseTexture ? NORMAL_TEX_PIPE_COUNT : NORMAL_PIPE_COUNT;
}
}