匿名协程

Question

首先这是我想做的：

delegate IEnumerator EnemySpawningRoutine();

EnemySpawningRoutine[] enemySpawners = new EnemySpawningRoutine[] {
    () => {
        //variables
        //spawn
        yield return new WaitForSeconds(3f);
        //complex stuff
        //more spawning
    },
    () => {
        //same as above
    }
};

IEnumerator EnemySpawningRoutine() {
    IEnumerator currentSpawnRoutine;
    while(isGameRunning) {
        currentSpawnRoutine = //choose one of enemySpawners
        StartCoroutine(currentSpawnRoutine);
        yield return new WaitUntil(() => {
            //return true if all enemies are dead or something like that.
        });
    }
}

不幸的是，这似乎是不可能的，因为委托或匿名函数不支持yield yield功能。

还有没有匿名IEnumerators的方法，可以达到与上述相同的效果？