center player and stuff

game/states.py

@@ -1,6 +1,7 @@
 """A collection of game states."""
 
 from __future__ import annotations
+from functools import reduce
 
 import attrs
 import tcod.console
@@ -50,9 +51,15 @@ class InGame(State):
 
     def on_draw(self, console: tcod.console.Console) -> None:
         """Draw the standard screen."""
+        centers = g.world.Q.all_of(tags=[IsPlayer])
+        centers = list(map(lambda a: a.components[Position], centers))
+        center = reduce(lambda a,b: a.components[Position]+b.components[Position], centers)
+        center.mod(len(centers))
+
         def draw(e):
-            pos = e.components[Position]
-            if (0 <= pos.x < console.width and 0 <= pos.y < console.height):
+            pos = e.components[Position] - center
+            if (-console.width//2 <= pos.x < console.width//2\
+                and -console.height//2 <= pos.y < console.height//2):
                 graphic = e.components[Graphic]
                 console.rgb[["ch", "fg"]][pos.y, pos.x] = graphic.ch, graphic.fg