forking from https://gitea.daggertrout.com/mcdoh/ExMineArchive

.formatter.exs

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+# Used by "mix format"
+[
+  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]

.gitignore

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+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where 3rd-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+cartographer-*.tar
+

README.md

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+# Cartographer
+
+**TODO: Add description**
+
+## Installation
+
+If [available in Hex](https://hex.pm/docs/publish), the package can be installed
+by adding `cartographer` to your list of dependencies in `mix.exs`:
+
+```elixir
+def deps do
+  [
+    {:cartographer, "~> 0.1.0"}
+  ]
+end
+```
+
+Documentation can be generated with [ExDoc](https://github.com/elixir-lang/ex_doc)
+and published on [HexDocs](https://hexdocs.pm). Once published, the docs can
+be found at [https://hexdocs.pm/cartographer](https://hexdocs.pm/cartographer).
+

config/config.exs

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+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+use Mix.Config
+
+# This configuration is loaded before any dependency and is restricted
+# to this project. If another project depends on this project, this
+# file won't be loaded nor affect the parent project. For this reason,
+# if you want to provide default values for your application for
+# 3rd-party users, it should be done in your "mix.exs" file.
+
+# You can configure your application as:
+#
+#     config :cartographer, key: :value
+#
+# and access this configuration in your application as:
+#
+#     Application.get_env(:cartographer, :key)
+#
+# You can also configure a 3rd-party app:
+#
+#     config :logger, level: :info
+#
+
+# It is also possible to import configuration files, relative to this
+# directory. For example, you can emulate configuration per environment
+# by uncommenting the line below and defining dev.exs, test.exs and such.
+# Configuration from the imported file will override the ones defined
+# here (which is why it is important to import them last).
+#
+#     import_config "#{Mix.env}.exs"

lib/cartographer.ex

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+defmodule Cartographer do
+  alias Cartographer.Board
+
+  defdelegate new_board(height, width), to: Board
+
+  defdelegate height(board), to: Board
+
+  defdelegate width(board), to: Board
+
+  defdelegate get(board), to: Board
+
+  defdelegate get(board, x, y), to: Board
+
+  defdelegate get(board, x, y, range), to: Board
+
+  defdelegate set(board, x, y, data), to: Board
+
+  defdelegate neighbors(board, x, y), to: Board
+end

lib/cartographer/board.ex

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+defmodule Cartographer.Board do
+  defstruct(
+    tiles: %{},
+    height: nil,
+    width: nil
+  )
+
+  def new_board(height, width) do
+    %__MODULE__{
+      height: height,
+      width: width,
+    }
+  end
+
+  def in_bounds(%__MODULE__{:height => height, :width => width}, x, y) do
+    x >= 0 and x < width and y >= 0 and y < height
+  end
+
+  def coordinate_range(center_x, center_y, range) do
+    for x <- (center_x - range)..(center_x + range), y <- (center_y - range)..(center_y + range), do: {x, y}
+  end
+
+  def height(board), do: board.height
+  def width(board), do: board.width
+
+  def get(board), do: board
+
+  def get(board, x, y) do
+    Map.get(board.tiles, {x, y})
+  end
+
+  def get(board, center_x, center_y, range) do
+    coordinate_range(center_x, center_y, range)
+    |> Enum.filter(fn({x, y}) -> in_bounds(board, x, y) end)
+    |> Enum.reduce(%{}, &(Map.put(&2, &1, Map.get(board.tiles, &1))))
+  end
+
+  def set(board, x, y, data) do
+    in_bounds(board, x, y)
+    |> _set(board, x, y, data)
+  end
+
+  defp _set(_in_bounds = true, board, x, y, data) do
+    tiles = board.tiles
+    |> Map.put({x, y}, data)
+
+    board
+    |> Map.put(:tiles, tiles)
+  end
+
+  defp _set(_not_in_bounds, board, _x, _y, _data), do: board
+
+  def neighbors(board, center_x, center_y) do
+    coordinate_range(center_x, center_y, 1)
+    |> List.delete({center_x, center_y})
+    |> Enum.filter(fn({x, y}) -> in_bounds(board, x, y) end)
+    |> Enum.reduce(%{}, &(Map.put(&2, &1, Map.get(board.tiles, &1))))
+  end
+end

mix.exs

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+defmodule Cartographer.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :cartographer,
+      version: "0.1.0",
+      elixir: "~> 1.6",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    []
+  end
+end

test/cartographer_test.exs

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+defmodule CartographerTest do
+  use ExUnit.Case
+  doctest Cartographer
+
+  test "greets the world" do
+    assert Cartographer.hello() == :world
+  end
+end

test/test_helper.exs

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+ExUnit.start()