@Override
	public boolean canSetTrapOn(MOB mob, Physical P)
	{
		if(!super.canSetTrapOn(mob,P)) return false;
		if(mob!=null)
		{
			final Item I=findMostOfMaterial(mob.location(),RawMaterial.MATERIAL_ROCK);
			if((I==null)
			||(super.findNumberOfResource(mob.location(),I.material())<100))
			{
				mob.tell(_("You'll need to set down at least 100 pounds of stone first."));
				return false;
			}
			if(numWaterskins(mob)<=10)
			{
				mob.tell(_("You'll need to set down at least 10 water containers first."));
				return false;
			}
		}
		if(P instanceof Room)
		{
			final Room R=(Room)P;
			if((R.domainType()&Room.INDOORS)==0)
			{
				if(mob!=null)
					mob.tell(_("You can only set this trap indoors."));
				return false;
			}
		}
		return true;
	}