Change what Resources are worth?

/// How much is a Resource worth?
int CvDealAI::GetResourceValue(ResourceTypes eResource, int iResourceQuantity, int iNumTurns, bool bFromMe, PlayerTypes eOtherPlayer)
{
	int iItemValue = 0;
	const CvResourceInfo* pkResourceInfo = GC.getResourceInfo(eResource);
	ResourceUsageTypes eUsage = pkResourceInfo->getResourceUsage();

	// Strategic Resource
	if(eUsage == RESOURCEUSAGE_STRATEGIC)
	{
		//tricksy humans trying to sploit us
		if(!bFromMe)
		{
			// if we already have a big surplus of this resource
			if(GetPlayer()->getNumResourceAvailable(eResource) > GetPlayer()->getNumCities())
				iResourceQuantity = 0;
			else
				iResourceQuantity = min(max(5,GetPlayer()->getNumCities()), iResourceQuantity);
		}

		if(!GET_TEAM(GetPlayer()->getTeam()).IsResourceObsolete(eResource))
			[B][COLOR="red"]iItemValue += (iResourceQuantity * iNumTurns * 150 / 100);	// Ex: 5 Iron for 30 turns * 1.5 = value of 225[/COLOR][/B]
		else
			iItemValue = 0;
	}

	// Increase value if it's from us and we don't like the guy
	if(bFromMe)
	{
		int iModifier = 0;

		// Opinion also matters
		// [B][COLOR="Red"]SNIP ... lots of hard-coded values[/COLOR][/B]

		// Approach is important
		// [B][COLOR="red"]SNIP ... lots of hard-coded values[/COLOR][/B]

		iItemValue *= iModifier;
		iItemValue /= 200;	// 200 because we've added two mods together
	}

	return iItemValue;
}