Move DIRECTION_KEYS to constants.py, remove eq=False

Backporting changes from part-3

Author: HexDecimal

game/constants.py

@@ -0,0 +1,36 @@
+"""Global constants are stored here."""
+
+from typing import Final
+
+from tcod.event import KeySym
+
+DIRECTION_KEYS: Final = {
+    # Arrow keys
+    KeySym.LEFT: (-1, 0),
+    KeySym.RIGHT: (1, 0),
+    KeySym.UP: (0, -1),
+    KeySym.DOWN: (0, 1),
+    # Arrow key diagonals
+    KeySym.HOME: (-1, -1),
+    KeySym.END: (-1, 1),
+    KeySym.PAGEUP: (1, -1),
+    KeySym.PAGEDOWN: (1, 1),
+    # Keypad
+    KeySym.KP_4: (-1, 0),
+    KeySym.KP_6: (1, 0),
+    KeySym.KP_8: (0, -1),
+    KeySym.KP_2: (0, 1),
+    KeySym.KP_7: (-1, -1),
+    KeySym.KP_1: (-1, 1),
+    KeySym.KP_9: (1, -1),
+    KeySym.KP_3: (1, 1),
+    # VI keys
+    KeySym.h: (-1, 0),
+    KeySym.l: (1, 0),
+    KeySym.k: (0, -1),
+    KeySym.j: (0, 1),
+    KeySym.y: (-1, -1),
+    KeySym.b: (-1, 1),
+    KeySym.u: (1, -1),
+    KeySym.n: (1, 1),
+}

game/states.py

@@ -1,50 +1,18 @@
 """A collection of game states."""
-from __future__ import annotations
 
-from typing import Final
+from __future__ import annotations
 
 import attrs
 import tcod.console
 import tcod.event
-from tcod.event import KeySym
 
 import g
 from game.components import Gold, Graphic, Position
+from game.constants import DIRECTION_KEYS
 from game.tags import IsItem, IsPlayer
 
-DIRECTION_KEYS: Final = {
-    # Arrow keys
-    KeySym.LEFT: (-1, 0),
-    KeySym.RIGHT: (1, 0),
-    KeySym.UP: (0, -1),
-    KeySym.DOWN: (0, 1),
-    # Arrow key diagonals
-    KeySym.HOME: (-1, -1),
-    KeySym.END: (-1, 1),
-    KeySym.PAGEUP: (1, -1),
-    KeySym.PAGEDOWN: (1, 1),
-    # Keypad
-    KeySym.KP_4: (-1, 0),
-    KeySym.KP_6: (1, 0),
-    KeySym.KP_8: (0, -1),
-    KeySym.KP_2: (0, 1),
-    KeySym.KP_7: (-1, -1),
-    KeySym.KP_1: (-1, 1),
-    KeySym.KP_9: (1, -1),
-    KeySym.KP_3: (1, 1),
-    # VI keys
-    KeySym.h: (-1, 0),
-    KeySym.l: (1, 0),
-    KeySym.k: (0, -1),
-    KeySym.j: (0, 1),
-    KeySym.y: (-1, -1),
-    KeySym.b: (-1, 1),
-    KeySym.u: (1, -1),
-    KeySym.n: (1, 1),
-}
-
 
-@attrs.define(eq=False)
+@attrs.define()
 class InGame:
     """Primary in-game state."""