public class ArmourPowerupEntity : ModelledEntity {
    private const float DEFAULT_ARMOUR_SCALING = 1f;
    
    public ArmourPowerupEntity(Vector3 powerupPosition) 
        : this(powerupPosition, DEFAULT_ARMOUR_SCALING) { }
 
    public ArmourPowerupEntity(Vector3 powerupPosition, float customScaling) {
        Model = ModelDatabase.ArmourModel;
        Position = powerupPosition;
        Scaling = customScaling;
    }
}
 
public class RocketProjectileEntity : ModelledEntity {
    public RocketProjectileEntity(Vector3 firingPoint, Vector3 firingVelocity, bool isBigRocket) {
        Model = ModelDatabase.RocketModel;
        Position = firingPoint;
        Velocity = firingVelocity;
        Scaling = isBigRocket ? 2f : 1f;
    }
}