Random Number Without Repeat Problem

New to construct, first time posting on the forums:

I have a game, which On Collision with "DoorWarp"(an invisible sprite object) the game sets a variable RoomRandom from 1-10, this part is working great. Depending on the value it retrieves, it loads a new layout based on the value. Level 1-1 for 1, 1-2, for 2, etc.

I'm making a rogue-like-esque-lite game where level progression should be random.

Each 'level' is on it's own layout, and is associated with a RoomRandom number as explained before.

How do i make it so RoomRandom doesn't repeat numbers when you collide with DoorWarp.

For example, i can be on 1-1 and hit the DoorWarp, loading 1-5... Perfect.

I beat 1-5 and RoomRandom chooses a new number, if this number is 1, it loads 1-1.... Undesired.

Sometimes, even, i beat 1-5 and RoomRandom lands on 5 again and reloads 1-5.... Undesired.

How do i make it so once RoomRandom picks a number, that number can no longer be chosen again until game over.

Easy Peasy and classic coding. There are a few ways to do this. Personally Like strings because of the small object it represents. but we will go with arrays.

You have an array with size = NumRooms

Repeat NumOfRooms

Array.Set(0) to loopindex

boom you have your list of rooms. Next step and here is the magic.

// get a random index from remaining rooms

var index = floor( Random( 0, Array.Size ) )

// get the room number from the array at index

var roomToLoad = Array.Get( index )

// remove the value at index position so it doesn't happen again.

Array.RemoveAt( index )

You have now mastered Construct 2

As a warning. This is Psuedo Contrsuct 2 terms. I could have the terms wrong. Such as RemoveAt could in fact could be PopAt, DeleteAt... or something else. Also i think think Array.Size should probably be Array.Width. C2 naming is kinda wierd.

I was going to suggest something else, but jayderyu example is more elegant and graceful. What he is suggesting to do is perfect.

oh by the way. You can also put entire Layout names as "strings" in side the array instead of just numbers. Works really well.

thanks guys! you're the best

actually would you perhaps be able to link a capx example, because i'm having trouble understanding whats really going on here, i can't even find the stuff in c2 editor to do any of this

like how would i implement this into loading a layout, and what is this loopindex, i'm just really confused.

Nevermind, i figured it out! thanks a ton.

Can someone explain how? I have 4 layouts. And they go to each layout randomly by code "Layout " & ceil(random(3) + 1). And it's working. But the problem is, I want each layout to appear once.