private IObservable <Unit> InstantiateEnemies(EnemiesDefinition enemiesDef)
{
return(Observable.Interval(TimeSpan.FromSeconds(enemiesDef.InstantiationInterval))
.Take(enemiesDef.Count)
.Do(_ =>
{
var def = configuration.GetEnemyByName(enemiesDef.EnemyName);
GameProvider.GetGameView().InstantiateEnemy(def);
})
.AsSingleUnitObservable());
}
private IObservable <long> Cycle(LevelDefinition levelDefinition, EnemiesDefinition currentEnemies)
{
return(Observable.Start(() => currentEnemies)
.SelectMany(def =>
def.Delay.Equals(0)
? InstantiateEnemies(def)
: Observable.Timer(TimeSpan.FromSeconds(def.Delay))
.SelectMany(_ => InstantiateEnemies(def)))
.SelectMany(_ =>
levelDefinition.EnemiesList.Next(currentEnemies).SelectOrElse(next => Cycle(levelDefinition, next),
() =>
{
gamePlayEventObserver.OnNext(GamePlayEvent.LastRound());
return Observable.Empty <long>();
})));
}
