1 files changed, 24 insertions, 0 deletions
diff --git a/lib/chessh/utils.ex b/lib/chessh/utils.ex
index 3e83d5e..20a8b96 100644
--- a/lib/chessh/utils.ex
+++ b/lib/chessh/utils.ex
@@ -1,4 +1,23 @@
 defmodule Chessh.Utils do
+  @ascii_chars Application.compile_env!(:chessh, :ascii_chars_json_file)
+               |> File.read!()
+               |> Jason.decode!()
+
+  @clear_codes [
+    IO.ANSI.clear(),
+    IO.ANSI.home()
+  ]
+
+  def ascii_chars(), do: @ascii_chars
+  def clear_codes(), do: @clear_codes
+
+  def center_rect({rect_width, rect_height}, {parent_width, parent_height}) do
+    {
+      div(parent_height - rect_height, 2),
+      div(parent_width - rect_width, 2)
+    }
+  end
+
   def pid_to_str(pid) do
     pid
     |> :erlang.pid_to_list()
@@ -11,4 +30,9 @@ defmodule Chessh.Utils do
     split = String.split(text, "\n")
     {Enum.reduce(split, 0, fn x, acc -> max(acc, String.length(x)) end), length(split)}
   end
+
+  def wrap_around(index, delta, length) do
+    calc = index + delta
+    if(calc < 0, do: length, else: 0) + rem(calc, length)
+  end
 end