#namespace Blackboard;
		
function RegisterBlackBoardAttribute( entity, attributeName, defaultAttributeValue, getterFunction )
{
	Assert( IsDefined( entity.__blackboard ), "Blackboard - No blackboard has been created for this entity." );
	Assert( !IsDefined( entity.__blackboard[attributeName] ), "BlackBoard - Attribute " + attributeName + " already registered." );
		
	if( IsDefined( getterFunction ) )
	{		
		// When a blackboard is registered with getterFunction, then every single time its requested, it will 
		// execure getterFunction and return the value.	
		Assert( IsFunctionPtr( getterFunction ) );
					
		entity.__blackboard[attributeName] = getterFunction;
	}
	else
	{
		// If there is no getterFunction, then it will just store the default value
		if( !IsDefined( defaultAttributeValue ) )
		{
			defaultAttributeValue = undefined;
		}
		
		entity.__blackboard[attributeName] = defaultAttributeValue;
	}
}

function GetBlackBoardAttribute( entity, attributeName )
{	
	if( IsFunctionPtr( entity.__blackboard[attributeName] ) )
	{
		getterFunction = entity.__blackboard[attributeName];
		attributeValue = entity [[getterFunction]]();
		
		/#
			if( IsActor( entity ) )
				entity updatetrackedblackboardattribute( attributeName ); 
		#/
		
		return attributeValue;
	}
	else
	{
		/#
			if( IsActor( entity ) )
				entity updatetrackedblackboardattribute( attributeName ); 
		#/
		return entity.__blackboard[attributeName];
	}
}
	
function SetBlackBoardAttribute( entity, attributeName, attributeValue )
{	
	if ( IsDefined( entity.__blackboard[attributeName] ) )
	{
		if ( !IsDefined( attributeValue ) && IsFunctionPtr( entity.__blackboard[attributeName] ) )
		{
			// Attempts to clear attributes with getter functions is meaningless.
			return;
		}
	
		Assert( !IsFunctionPtr( entity.__blackboard[attributeName] ), "Blackboard - Attribute value can not be set explicitly, as it has a getterFunction." );
	}
	
	entity.__blackboard[attributeName] = attributeValue;
	
	/#
		if ( IsActor( entity ) )
			entity updatetrackedblackboardattribute( attributeName ); 
	#/
}

function CreateBlackBoardForEntity( entity )
{
	if( !IsDefined( entity.__blackboard ) )
	{
		entity.__blackboard = [];
	}
	
	if( !IsDefined( level._setBlackboardAttributeFunc ) )
	{
		level._setBlackboardAttributeFunc = &SetBlackBoardAttribute;
	}
}