Filtering an Array

[brainstorm]

Alright, I'm guessing the guys in the irc are a bit tired of my useless scripting rants, so I've decided to get help in the forum, this time. I really want to filter an array into an all new array.

for example: array = [0,0,0,0,1,1,1,1,2,2,2,2] (array[0...3] = 0, array[4...7] = 1, array[8...11] = 2)
If I wanted a new array that only held the number 1, for example, I'd need the array not to start at 4 and end at 7, but to start at 0 and end at 3.

another example is: array = [1,0,1,2,0,1,2,0,0,2,2,1] If I needed a new array with only 1's It would be the same as the first example.


Alright if you don't understand that, I'll give you an example from my failed attempts:

        cards = @actor.deck[@deck_index].cards.clone
        magic_cards = []
        for i in 0...cards.size
          if cards[i][2] != "Magic"
            cards[i] = nil
          end
        end
        cards.compact
        magic_cards = cards.clone
        for i in 0...magic_cards.size
          draw_card_graphic(magic_cards[i], 2, 2, i)
        end

You see, I know why this wouldn't work, but I don't know how to fix it. The this wouldn't work is because magic_cards retains the same index as the cards that are cloned.

Now, you should know my problem. I'd really like some help with this.

 

[Eilei]

Use the array.select method; something like this:

        magic_cards = @actor.deck[@deck_index].cards.select {|card| card[2] == "Magic"}

        for i in 0...magic_cards.size
          draw_card_graphic(magic_cards[i], 2, 2, i)
        end

 

[brainstorm]

It works perfectly, thanks alot.

 

[khmp]

Topic resolved. If brainstorm or any other wonderful forum goers have any other questions please create a new thread. :thumb: