public class TroopCarrier extends GroundVehicle	// type of GroundVehicle primarily used to transport troops, but can also
{												// transport equipment, some are armed with heavier armaments, some are fast
	private boolean armed;	// is armed or is not armed for fighting
	
	public TroopCarrier()			// no arg constructor assumes normal troop carrier
	{
		this("Normal");
	}
	public TroopCarrier(String t)		// establish specific values unique to the types of troop carriers
	{
		super(t);
		roughTerrainCapable=true;		// all are roughTerrainCapable and heavilyArmored
		heavilyArmored=true;		
		if(t.equals("armed"))
		{
			speed=50;
			armament=30;
			capacity=8;
			armed=true;
		}
		else if(t.equals("light"))
		{
			speed=70;
			armament=10;
			capacity=20;
			armed=false;
		}
		else
		{
			speed=60;
			armament=10;
			capacity=25;
			armed=false;
		}
	}

	// accessor for new instance datum
	public boolean isArmed()
	{
		return armed;
	}
	
	// override parent methods based on new instance data and logic
	@Override
	public String toString()
	{
		return super.toString() + " and is armed " + armed;
	}
	
	// good choice if ground support isn eeded and need arms and/or equipment, limited distance
	@Override
	public int getBattleUtility(boolean night, boolean roughTerrain, boolean needGroundSupport, boolean needHeavyArms, boolean antiAircraftGuns, boolean equipment, int distance)
	{
		int score=super.getBattleUtility(night,roughTerrain,needGroundSupport,needHeavyArms,antiAircraftGuns,equipment,distance);
		if(needGroundSupport) score+=capacity*2;
		if(distance<=getDistance()) score+=7; else score-=33;
		if(needHeavyArms&&armed) score+=armament; else score+=5;
		if(equipment) score+=10;
		return score;
	}		
}