Random variable with destroy instance?

[thefondrens]

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Script Title:
Random Variable with Destroy Instance
RMXP:
Detailed Description:
What I'm trying to do is have twelve cards lying face down. When the player clicks the card, it turns face up. I don't want the player to be able to get the same results from turning over one card, as they would for another. I Know how to set the variable to a random value, but what I DON'T know is how to make that value no longer an option in the random selection. It will allow me to select randomly from a range, ie 0-11, but won't give me an option to disclude one value in that range, ie 0-11 but not 5, or 0-4 and 6-11.

 

[Zeriab]

For doing that I would consider the range as a set where I would pick a random piece from the set and remove it. This way you don't have to worry about ranges. You can use ranges to populate the initial range.

In a more usable form I would suggest converting the range to an array and then delete values when you use them. To make it easier you can extend the Array class with a method for this:

[rgss]class Array
  def destroy_random!
    delete_at(rand(length))
  end
end
 
# Example of how it can be used
array = (0..11).to_a
p array.destroy_random!, array
p array.destroy_random!, array
[/rgss]

You just have to keep track of the array.
Note that the picked number is returned from array.delete_random!

Spoiler: Extended version for multiple deletes at the same time

[rgss]class Array
  def delete_random!(times = 1)
    return delete_at(rand(length)) if times == 1
    arr = []
    times.times {arr << delete_at(rand(length))}
    return *arr
  end
end
 
# Example of how it can be used
array = (0..11).to_a
p array.delete_random!, array
p array.delete_random!(5), array
[/rgss]

*hugs*
- Zeriab

 

[thefondrens]

I'm afraid I'm still having trouble. Could you possible send me a simple example in game format? Or, does anyone out there have a copy of Trickster's blackjack game?
Thank you SO much!!!