Where to start Portal Like Physics/Portal? (Valve)

Anyone able to help?

Basically wanting to be able to place portals like on portal the game by valve...

where can i start i have looked at other post's but not really much help.

Thank you

Well, you need to write a script that will fire a portal 'bullet' out of a gun -- just like a normal gun. (Check out FPS tutorial). Then you need a portal prefab, which will be instantiated when the bullet hits the wall. This will make a portal. Then you need to write a code which means that if you hit one portal, you appear at the other. (I'd use tags). Finally, you'll need to write a code which only lets you have two portals on screen. Then you're sorted!

Use this full game clone Portalizer game package from store