Classic: Bubble Puzzle. Recursion Help Needed

Hi,
I'm currently making a bubble puzzle prototype. I got the shooting and grid down but I'm still trying to figure out how to do detection between same color object in a array. Like this:

-How do I make a recursive function to check if bubble have the same color and if 3 or more are in contact after bullet bullet stick to it? (I'm thinking making another array but does mean one for each color? sry a bit confuse)

-Also, I was wondering if there is an alternative for fixed joint if we use 2D collider? (Here I'm thinking I could stick the bullet on collisionEnter and then parent it but it might affect my search color in a bad way)

-Do I need to parent the object for it to stick or is there an alternative? (For when the bullet stick to an object)

 

There's always an alternative.

I would say 2D array to keep track of the balls overall. Typically you only ever have one ball shooting at a time, once it's finished shooting you find where it would be positioned in the array, calculate if it created a new group of 3, and if it did, you calculate if after removing it any balls are no longer connected to the top.

I don't really get what you would even use a fixed joint for. It's a rigidbody thing and I don't think I'd even bring Rigidbodies into it.

 

One thing if you're testing connection to the top through a recursive function, you have to keep track of which bubbles you've already checked. I think I wrote about this in more detail when I was making Flash games.

http://www.actionscript.org/forums/showthread.php3?t=239993

 

Thx rrh, I understand the logic a bit better now. A bit confusing to write code wise but I will give it a try. By the way I'm not spawning my bulletBubble in the array it doesn't matter right?

 

Like, an array of the game board? I would only add the bullet to the game board once it has stopped moving.