Add optional coordinates to a piece

Signed-off-by: Olivier Gayot <olivier.gayot@sigexec.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/cameltris/piece.py b/cameltris/piece.py
index d8e7b63..3636fbd 100644
--- a/cameltris/piece.py
+++ b/cameltris/piece.py
@@ -1,8 +1,11 @@
 """ Module that defines all types of pieces """
 
+from typing import Optional
+
 import pygame
 
 from .color import Color
+from .coordinates import Coordinates
 
 
 square_template = pygame.Surface((48, 48))
@@ -12,6 +15,7 @@ class Piece:
     """ A piece class that provides default methods for performing rotations """
     def __init__(self):
         """ Initialize a piece """
+        self.coord: Optional[Coordinates] = None
         self.square = square_template.copy()
 
     def rotate_clockwise(self):