/*
 * Create an array of targets from industries on the map that accept or produce 
 * the predefined cargo for this schema. 
 */
function Schema::GetIndustryTargets() {
	// Get a list of all industries that handle the appropriate cargo
	local indList = AIList();
	
	foreach(cargo, _ in this.cargos) {
		indList.AddList(AIIndustryList_CargoAccepting(cargo));
		indList.AddList(AIIndustryList_CargoProducing(cargo));
	}
	
	// The source node is currently a town, which is no good!
	indList.Valuate(AIIndustry.GetDistanceManhattanToTile, AITown.GetLocation(this.sourceNode));
	indList.Sort(AIAbstractList.SORT_BY_VALUE, true);
	this.sourceNode = indList.Begin();
	
	// Build a list of targets
	local targets = Map();
	foreach(industry, _ in indList) {
		targets.Insert(Target(Target.TYPE_INDUSTRY, industry));
	}

	return targets;
}