weapon.extremeRange = 12;
    public static WeaponType createAC20() {        WeaponType weapon = new WeaponType();        weapon.name = "Auto Cannon/20";        weapon.setInternalName(weapon.name);        weapon.addLookupName("IS Auto Cannon/20");        weapon.addLookupName("ISAC20");        weapon.addLookupName("IS Autocannon/20");        weapon.heat = 7;        weapon.damage = 20;        weapon.rackSize = 20;        weapon.ammoType = AmmoType.T_AC;        weapon.minimumRange = 0;        weapon.shortRange = 3;        weapon.mediumRange = 6;        weapon.longRange = 9;        weapon.tonnage = 14.0f;        weapon.criticals = 10;        weapon.flags |= F_DIRECT_FIRE;        weapon.bv = 178;        return weapon;    }