void EnforceUniqueIDs()
{
EnemyInfo currentEnemy = null;
EnemyInfo previousEnemy = null;
for (int i = 1; i < enemies.Count; i++)
{
currentEnemy = enemies[i];
previousEnemy = enemies[i - 1];
if (currentEnemy.Equals(previousEnemy))
{
string messageFormat = "{0} and {1} have the same id. Please make sure ";
messageFormat += "all enemies in the database have unique IDs.";
throw new System.ApplicationException(string.Format(messageFormat,
currentEnemy.name,
previousEnemy.name));
}
}
}