public DefaultRelationManager(RelationToken token, IEnumerable <RelationToken> enemies)
{
RelationToken = token;
foreach (var enemyToken in enemies)
{
if (enemyToken == token)
{
throw new InvalidOperationException("Entity cannot by enemy to itself.");
}
enemyTokens.Add(enemyToken);
}
}
public virtual bool IsEnemy(RelationToken relationToken) => enemyTokens.Contains(relationToken);
