Fix up all the runtime errors caused by the previous refactoring

roguebasin/object.py

@@ -8,10 +8,20 @@ from typing import Optional
 class Entity:
     '''A single-tile drawable entity with a symbol and position.'''
 
-    def __init__(self, symbol: str, *, position: Optional[Point] = None, color: Optional[tcod.Color] = None):
+    def __init__(self, symbol: str, *,
+                 position: Optional[Point] = None,
+                 fg: Optional[tcod.Color] = None,
+                 bg: Optional[tcod.Color] = None):
         self.position = position if position else Point()
-        self.color = color if color else tcod.white
+        self.foreground = fg if fg else tcod.white
+        self.background = bg
         self.symbol = symbol
 
     def print_to_console(self, console: tcod.Console) -> None:
-        console.print(x=self.__x, y=self.__y, string=self.__symbol, fg=self.__color)
+        console.print(x=self.position.x, y=self.position.y, string=self.symbol, fg=self.foreground, bg=self.background)
+
+    def __str__(self):
+        return f'{self.symbol}[{self.position}]'
+
+    def __repr__(self):
+        return f'{self.__class__.__name__}({self.symbol}, position={self.position}, fg={self.foreground}, bg={self.background})'