koobas.hobune.stream
Advanced Wave Spawner
Hi, I made a simple wave spawner that spawns one type of enemies:
void Update () {
if (player.transform.position.y < -50) {
waveIndex = 0;
countdown = 15f;
}
if (enemiesAlive > 0) {
return;
}
if (countdown <= 0f) {
StartCoroutine (spawnWave());
countdown = deltaWaves;
return;
}
countdown -= Time.deltaTime;
countdown = Mathf.Clamp (countdown, 0f, Mathf.Infinity);
}
IEnumerator spawnWave() {
waveIndex++;
for (int i = 0; i < waveIndex; i++) {
spawnEnemy ();
yield return new WaitForSeconds (0.5f);
}
}
void spawnEnemy() {
spawnIndex = Random.Range (0, Spawnpoints.points.Length - 1);
Instantiate (enemy, Spawnpoints.points[spawnIndex].transform.position, Quaternion.identity);
enemiesAlive++;
}
}
Basically, I want to edit the code above to make it support multiple enemy types in a single wave. How should I do this?
Thanks,
~Higgsboson728
(Please do not link me to the wiki)
Best Answer
First, you want the spawnEnemy method to be passed an enemy parameter :
void spawnEnemy (GameObject enemy)
{
spawnIndex = Random.Range (0, Spawnpoints.points.Length - 1);
Instantiate (enemy, Spawnpoints.points[spawnIndex].transform.position, Quaternion.identity);
enemiesAlive++;
}
Then, you want the spawnWave method to tap into a table of enemies with some cycling or random indexing.
public List<GameObject> enemies; // a list of game objects that'll store the enemies references
IEnumerator spawnWave()
{
waveIndex++;
int index;
for (int i = 0; i < waveIndex; i++)
{
index = Random.Range (0, enemies.Count); // using random here
//index = (index >= enemies.Count-1) ? 0 : index+1; // or using cycling
spawnEnemy (enemies[index]);
yield return new WaitForSeconds (0.5f);
}
}
You could make a Wave class, like :
[System.Serializable]
public class Wave
{
public List<GameObject> enemies;
}
Then, you could make the spawnWave method take a Wave for argument, like :
IEnumerator spawnWave (Wave wave)
{
waveIndex++;
int index;
for (int i = 0; i < waveIndex; i++)
{
index = (index >= wave.enemies.Count-1) ? 0 : index+1;
spawnEnemy (wave.enemies[index]);
yield return new WaitForSeconds (0.5f);
}
}
Then you could add a List of waves to your spawner and iterate through it:
public List<Wave> waves;
StartCoroutine (spawnWave (waves [waveIndex]));
I'm sorry for being a noob, but how do I actually add the waves? Do I add them in a list?
