koobas.hobune.stream
Making a turret shoot at a low fire rate.
What is the best method to create a turret, that picks a random object from an array of objects, and than shoots it, and waits, say, 2 seconds before the next shot? I got so far as creating the array, instantiating a random gameObject from the array, and shooting it. The only problem is, that I can't solve, is the "waits for 2 seconds" part. Here is the code I wrote so far:
public class ShootingD : MonoBehaviour {
public Rigidbody[] projectiles = new Rigidbody[5];
Rigidbody MyElement;
public void Update()
{
MyElement = projectiles[Random.Range(0,projectiles.Length)];
Instantiate (MyElement, new Vector3(1, 3, 224), new Quaternion (0,-180, -180, 0));
MyElement.animation.Play ("Shrink");
MyElement.AddForce (Vector3.back, ForceMode.Impulse);
}
}
Best Answer
float myTime = 0.0f;
public void Update()
{
myTime += Time.deltaTime;
if (myTime > 2.0f)
{
myTime -= 2.0f;
MyElement = projectiles[Random.Range(0,projectiles.Length)];
//etc
}
Graham's answer is good. You could also try out IEnumerator and have dedicated functions taking care of things. For example:
using UnityEngine;
using System.Collections;
public class ShootingD : MonoBehaviour
{
public Rigidbody[] projectiles = new Rigidbody[5];
Rigidbody MyElement;
public float delayTime = 2.0f; // Time between shots
public bool shootEnabled; // Toggle shooting off and on
bool shootRunning;
void Start()
{
StartCoroutine(Shoot());
}
IEnumerator Shoot()
{
while (true)
{
if (shootEnabled == true && shootRunning == false)
{
shootRunning = true;
MyElement = projectiles[Random.Range(0, projectiles.Length)];
Instantiate(MyElement, new Vector3(1, 3, 224), new Quaternion(0, -180, -180, 0));
MyElement.animation.Play("Shrink");
MyElement.AddForce(Vector3.back, ForceMode.Impulse);
yield return new WaitForSeconds(delayTime);
shootRunning = false;
}
yield return null;
}
}
}
Ah, I love this answer! But I don't have enough reputation to upvote, so I'll leave it in a comment. :) I'd been wondering about how to achieve something like this and you've just pointed me to the right parts of the Unity docs!
