javascript - 统一/如何设置敌人生成的限制？

Question

我设法生成了敌人，但它们一直在生成。如何设置限制，避免不断生成？

我已经尝试添加 spawnLimit 和 spawnCounter 但无法让它工作。

var playerHealth = 100;     // Reference to the player's heatlh.
var enemy : GameObject;                // The enemy prefab to be spawned.
var spawnTime : float = 3f;            // How long between each spawn.
var spawnPoints : Transform[];         // An array of the spawn points this enemy can spawn from.


function Start ()
{
    // Call the Spawn function after a delay of the spawnTime and then continue to call after the same amount of time.
    InvokeRepeating ("Spawn", spawnTime, spawnTime);
}


function Spawn ()
{
    // If the player has no health left...
    if(playerHealth <= 0f)
    {
        // ... exit the function.
        return;
    }


    // Find a random index between zero and one less than the number of spawn points.
    var spawnPointIndex : int = Random.Range (0, spawnPoints.Length);

    // Create an instance of the enemy prefab at the randomly selected spawn point's position and rotation.
    Instantiate (enemy, spawnPoints[spawnPointIndex].position, spawnPoints[spawnPointIndex].rotation);
}

Answer 1

你可以使用这种计数器:

int maxEnemies = 100;
int enemiyCounter = 0;

并在 Spawn() 中添加:

if(enemiyCounter < maxEnemies){
    Instantiate (enemy, spawnPoints[spawnPointIndex].position, spawnPoints[spawnPointIndex].rotation);
    enemyCounter++;
}

代替

Instantiate (enemy, spawnPoints[spawnPointIndex].position, spawnPoints[spawnPointIndex].rotation);