Any suggestions for implementing progressive difficulty

Questions & Answers
1

Hello everyone. I created a simple 2D shooter game a while back in Flash. I used a variable called totalEnemies = 10; and at the beginning of each level I would do totalEnemies++; This was all fine and dandy when the object of the game was simply to eliminate all enemies. My Unity game however, spawns enemies continuously until X amount of cash is collected. The enemies act as kind of obstacles. With each level I want to increase the number of enemies. I’ve tried numerous things, I won’t paste all my versions of this statement, but I’ve tried implementing a sort of totalEnemies++; but depending on how I implemented it it either didn’t work or froze Unity completely. Any suggestions? I feel like I coded myself into a wall.

function LevelEnd(){
         while (isSpawningEnemies) {
            if(level <=5){
               posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[0], Vector3(posX, 0.05523491, 3.545458),transform.rotation);
               totalEnemies++;
            }

            if(level >= 6){
               posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(2);
               Instantiate(enemies[1], Vector3(posX, 0.02, 3.545458),transform.rotation);
               totalEnemies++;
            }

            if(level >= 10){
               posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[2], Vector3(posX, .02, 3.545458),transform.rotation);
            }
        }
    }

**EDIT

function LevelEnd(){
         while (isSpawningEnemies) {
            if(level <=5 && totalEnemies < level+1){
               posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[0], Vector3(posX, 0.05523491, 3.545458),transform.rotation);
               totalEnemies++;
            }

            if(level >= 6 && totalEnemies < level){
               posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(2);
               Instantiate(enemies[1], Vector3(posX, 0.02, 3.545458),transform.rotation);
               totalEnemies++;
            }

            if(level >= 10 && totalEnemies < level){
               posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[2], Vector3(posX, .02, 3.545458),transform.rotation);
            }
        }
    }
2

I notice your while loop breaks on isSpawningEnemies. If that value is true and never becomes false, your loop will never complete.

3

Here is what I ended up doing.

var isSpawningEnemies : boolean = true;
private var EnemiesNeeded:int;

function Awake(){
	gameOver = false;
	points = 0;
	cash = 0;
	lives = 3;
	level = 1;
	EnemiesNeeded = level;
}

function Update () {
 isSpawningEnemies = false;
	if(cash >= level * 200){
		level++;
		LevelEnd();
	}

function LevelEnd(){
if(level <= 5){
isSpawningEnemies = true;
	while(totalEnemies < EnemiesNeeded && isSpawningEnemies){
		posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[0], Vector3(posX, .02, 3.545458),transform.rotation);
		}
		isSpawningEnemies = false;
	}
	if(level >= 6 && level <= 10){
	isSpawningEnemies = true;
	while(totalEnemies < EnemiesNeeded){
		posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[1], Vector3(posX, .02, 3.545458),transform.rotation);
	}
	}
	if(level == 11){
	isSpawningEnemies = true;
	EnemiesNeeded = 3;
	while(totalEnemies < EnemiesNeeded){
		posX = Random.Range(-4.213592,4.336067);

               yield WaitForSeconds(3);
               Instantiate(enemies[2], Vector3(posX, .02, 3.545458),transform.rotation);
	}
	}
}

Seems to be working (fingers crossed)