mirror of
https://github.com/danbee/chess
synced 2025-03-04 08:39:06 +00:00
Dan Barber
7ff1b03f89
Now we're only storing the pieces keyed by the piece position rather than storing the entire board as a set of nested Maps. This makes moving pieces much easier. We're also now storing the position as a pair of array indices which should make calculating the possible moves easier.
31 lines
771 B
Elixir
31 lines
771 B
Elixir
defmodule Chess.Api.GameController do
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use Chess.Web, :controller
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require Logger
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alias Chess.Game
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def show(conn, %{"id" => id}) do
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game = Repo.get!(Game, id)
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render conn, "show.json", game: game
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end
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def update(conn, %{"id" => id, "move" => move_params}) do
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game = Repo.get!(Game, id)
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changeset = Game.changeset(game, %{board: new_board(game.board, move_params)})
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case Repo.update(changeset) do
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{:ok, game} ->
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render(conn, "show.json", game: game)
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end
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end
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defp new_board(board, move_params) do
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[from_file, from_rank] = move_params["from"]
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[to_file, to_rank] = move_params["to"]
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{piece, board} = Map.pop(board, "#{from_file},#{from_rank}")
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Map.put(board, "#{to_file},#{to_rank}", piece)
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end
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end
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