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/** \file gameengine/Expressions/EmptyValue.cpp
* \ingroup expressions
*/
// EmptyValue.cpp: implementation of the CEmptyValue class.
/*
* Copyright (c) 1996-2000 Erwin Coumans <coockie@acm.org>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Erwin Coumans makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
*/
#include "EmptyValue.h"
#include "IntValue.h"
#include "FloatValue.h"
#include "StringValue.h"
#include "ErrorValue.h"
#include "ListValue.h"
#include "VoidValue.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CEmptyValue::CEmptyValue()
/*
* pre:
* effect: constructs a new CEmptyValue
*/
{
SetModified(false);
}
CEmptyValue::~CEmptyValue()
/*
* pre:
* effect: deletes the object
*/
{
}
CValue *CEmptyValue::Calc(VALUE_OPERATOR op, CValue *val)
/*
* pre:
* ret: a new object containing the result of applying operator op to this
* object and val
*/
{
return val->CalcFinal(VALUE_EMPTY_TYPE, op, this);
}
CValue * CEmptyValue::CalcFinal(VALUE_DATA_TYPE dtype, VALUE_OPERATOR op, CValue *val)
/*
* pre: the type of val is dtype
* ret: a new object containing the result of applying operator op to val and
* this object
*/
{
return val->AddRef();
}
double CEmptyValue::GetNumber()
{
return 0;
}
int CEmptyValue::GetValueType()
{
return VALUE_EMPTY_TYPE;
}
CListValue* CEmptyValue::GetPolySoup()
{
CListValue* soup = new CListValue();
//don't add any poly, while it's an empty value
return soup;
}
bool CEmptyValue::IsInside(CValue* testpoint,bool bBorderInclude)
{
// empty space is solid, so always inside
return true;
}
double* CEmptyValue::GetVector3(bool bGetTransformedVec)
{
assertd(false); // don't get vector from me
return ZeroVector();
}
static STR_String emptyString = STR_String("");
const STR_String & CEmptyValue::GetText()
{
return emptyString;
}
CValue* CEmptyValue::GetReplica()
{
CEmptyValue* replica = new CEmptyValue(*this);
replica->ProcessReplica();
return replica;
}
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