Random With Functions?

	Random With Functions?
	Discussion by Feelay with 4 Replies. Last Update: May 8, 2008, 10:20 am

Feelay

Hey!

Is it possible to use a random script on functions.
Lets say I have created three functions (Items that a user will win if he defeates a monster).

One function is a function named shield() and another function is named sword() and a third function is named helmet().
Now when a player defeates a monster, he must be awarded. So.. How can I randomize what item he should get? something like

CODE

rand(sheild(), sword(), helmet());

or?

Thanks //Feelay

Thu Mar 20, 2008 Reply New Discussion

turbopowerdmaxsteel

You can only use the rand function to generate a random number. However, this number can be used to call any of those functions randomly. This can be easily accomplished using a switch - case statement.

CODE

switch(rand(1, 3))
{
case 1:
sheild();
break;

case 2:
sword();
break;

case 3:
helmet();
break;
}

Fri Mar 21, 2008 Reply New Discussion

Feelay

oh my

Never wanted to learn how to use that switch case thing

Well.. I think I will have to learn then.. Thank You ^-^

//Feelay

Fri Mar 21, 2008 Reply New Discussion

TavoxPeru

I agree with turbopowerdmaxsteel, that's the way to do that in my opinion, but, another way to do the same thing is by using a series of IF and ELSEIF statements on the same expression, for example the following code is another way to write the same thing:

CODE

<?php
$i=rand(1, 3);
if ($i == 1) {
sheild();
} elseif ($i == 2) {
sword();
} elseif ($i == 3) {
helmet();
}
?>

Don't forget to always include a break statement at the end of every case, because the switch statement executes line by line and if you don't include it PHP will continue executing the next code until it finds a break statement or the end of the switch block. Also, it is recommended to include a default case that will be executed in case anything match.

QUOTE

A special case is the default case. This case matches anything that wasn't matched by the other cases, and should be the last case statement.

For more information go to PHP: switch - Manual.

Best regards,

Fri Mar 21, 2008 Reply New Discussion

Jared

Yes you may find at some point through editing that the amount of rewards may change. So it is always wise to have as much error checking in your script as possible:

CODE

$rewards_num = 3;
$reward = rand (1, $rewards_num); // for now, there are 3 options.

switch ($reward) {
case 1: helmet (); break;
case 2: sword (); break;
case 3: helmet (); break;
default: wrong_reward (); break; // this would be a function containing a returned value from the rand () that is invalid
}

And as the previous poster mentioned, check out that link for more info on the switch.

Thu May 8, 2008 Reply New Discussion