Need help with script

Questions & Answers
1

Hello and sorry if this is a stupid question, i am really new to Javascript.

I have this script which shoots a ball on left mouse click:

var shootForce:float; var parentPlayer:Transform; var prefabBall:Transform;

function Update()

{

if(Input.GetMouseButtonDown(0))
{
    var instantiatedBall = Instantiate(prefabBall, transform.position, Quaternion.identity);
    //instantiatedBall.transform.parent = parentPlayer;
    instantiatedBall.rigidbody.AddForce(transform.forward * shootForce);

}

}

I want to edit it so it can only shoot a ball every 5 seconds. In other words, i want there to be a minimum 5 second interval between 2 ball shoots. How to make that happen? Thanks in advance.

2

This requires your ball to have a rigid body component. Make sure you read the anotations to understand what the script does.

//this is where we will specify the cannonball prefab in the inspector
var CannonballPrefab : Rigidbody;
//a boolean is a yes/no or true/false value. This will be switched on and off in this script
var CanFire : boolean = true;
//length of time it will take in sconds before the player can fire again
var CountdownTime : float = 5;
//this is how fast your cannonball will be fired, change this in the inspector depending on how big your level is
var CannonballSpeed : float;
//change this depending on how big your cylinder is,this is for if it's scaled by 1

//called every frame
function Update()
{
    //if the mouse button is pressed and fire is allowed
    if (Input.GetMouseButtonDown(0) && CanFire == true)
    {
        //player is not allowed to fire again until CanFire equals true
        CanFire = false;
        //start the function called Countdown
        Countdown();
        //this is where you instantiate the CannonballPrefab which you should have set, for the script, in the inspector
        //this line states that the CannonballPrefab will be instantiated on the "up/Y" axis of the Cannon, the offset is so that it comes out of the end.
        var Cannonball = Instantiate(CannonballPrefab, transform.position, transform.rotation);
        //this line gives the Cannonball, which we have instatiated, a direction and speed to go.
        Cannonball.rigidbody.velocity = transform.up * CannonballSpeed;
        //this is a debug log, you can see if the script has worked as a message will pop up in the bottom right corner of the Unity editor
        Debug.Log ("Cannon has just fired");
    }
}

//called when player presses mouse button will not be called if it's already in progress
function Countdown ()
{
    //this line waits for the amount of seconds that you set the variable CountdownTime to
    yield WaitForSeconds (CountdownTime);
    //player is allowed to fire
    CanFire = true;
    //this debug log appears when the player is allowed to fire again
    Debug.Log ("Fire enabled");
}