Method EvaluateExpression

trinity/Controllers/Tr2StateMachineTransition.cpp:128–147

}

BlueStdResult Tr2StateMachineTransition::EvaluateExpression( const char* expression, float& value ) const
{
	if( !m_source )
	{
		return BlueStdResult( BLUE_STD_RESULT_RUNTIME_ERROR, "controller needs to be running when evaluating expressions" );
	}
	Tr2ControllerExpression expr;
	auto error = expr.SetExpr( expression, *m_source->GetStateMachine() );
	if( !error.empty() )
	{
		return BlueStdResult( BLUE_STD_RESULT_VALUE_ERROR, error.c_str() );
	}
	auto result = expr.Eval();
	if( !result.first )
	{
		return BlueStdResult( BLUE_STD_RESULT_RUNTIME_ERROR, "error evaluating expression" );
	}
	value = result.second;
	return BlueStdResult();
}