Hal9000

Hal9000

As you may know, I am slowly/painfully writing an Elixir book.

There is a code example that I’ve written in Ruby – a simple
robot-type “capture the flag” game. (Not a real game, just a
coding exercise.)

I’m about to port the Ruby code to Elixir. If anyone wants to
look/comment/help, please feel free. (Those who contribute
will be mentioned in the acknowledgements fwiw.)

This repo will be public for at least two days:

https://github.com/Hal9000/vexil

Thanks,
Hal

Showing Posts 1 to 10

minhajuddin

minhajuddin

  1. Put *.beam in your .gitignore
  2. defstruct team: nil, kind: nil, move: nil, see: nil, ... could be written as defstruct [:team, :kind, :move, :see...]
  3. Use tuples is more idiomatic elixir instead of fixed sized lists e.g. in def get(grid, [:red, x, y])
Hal9000

Hal9000 OP

Agreed and committed. Thank you!

Hl

johnkelly

johnkelly

I think you can refactor the show_cell function to remove the conditional and assignments.

   defmodule Grid do
      def show_cell(grid, xx, yy) do
        grid
        |> Grid.get({:red, xx, yy})
        |> Bot.to_string
        |> IO.write
      end
    end

defmodule Bot do
  def to_string(nil), do: "-"
end
Hal9000

Hal9000 OP

Also excellent ideas. Committed.

romul

romul

I think, defender, fighter, scout, flag and related behavior are good to demonstrate how to work with Elixir protocols.

Eiji

Eiji

Created first small PR. I will help you more today or/and in next days. This will depend on your response times and my free time :smile:

Hal9000

Hal9000 OP

That is a good idea. I don’t think I’ll introduce protocols here at first, but I
could always refer back to the code later and show changes.

Hal

Hal9000

Hal9000 OP

Merged. Appreciated. Just remember we may be in different time zones. :wink:

By the way The Ruby version is not “ideal” either. The non-threaded version is
easier to watch/understand, but the threaded one is a massive free-for-all, and I
am not sure how I want to fix it.

Hal

Eiji

Eiji

Yes I mean I will send PR if I find some time in same day you merged previous.
What does mean:

FIXME pieces[team] << bot

?
I do not see a pieces declaration in this file …
And this comment:

line 22

:smile:

Eiji

Eiji

Tip: here you have a tutorial about creating a command line application in Elixir.
I will create a next PR in current week (first version of this app that works from command line).

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