Move all the interface stuff to interface.Interface

Draw three windows with frames:
- map window
- info window (hit point bar; turn count)
- message window

Clean up the UI code in the Engine.

erynrl/interface/__init__.py

@@ -1 +1,79 @@
 # Eryn Wells <eryn@erynwells.me>
+
+from typing import Optional
+
+from tcod.console import Console
+
+from .color import HealthBar
+from .percentage_bar import PercentageBar
+from .window import Window
+from ..geometry import Point, Rect, Size
+from ..map import Map
+from ..messages import MessageLog
+from ..object import Hero
+
+
+class Interface:
+    def __init__(self, size: Size, map: Map, message_log: MessageLog):
+        self.map_window = MapWindow(Rect(Point(0, 0), Size(size.width, size.height - 5)), map)
+        self.info_window = InfoWindow(Rect(Point(0, size.height - 5), Size(28, 5)))
+        self.message_window = MessageLogWindow(Rect(Point(28, size.height - 5), Size(size.width - 28, 5)), message_log)
+
+    def update(self, hero: Hero, turn_count: int):
+        self.info_window.turn_count = turn_count
+        self.info_window.update_hero(hero)
+
+    def draw(self, console: Console):
+        self.map_window.draw(console)
+        self.info_window.draw(console)
+        self.message_window.draw(console)
+
+
+class MapWindow(Window):
+    def __init__(self, bounds: Rect, map: Map):
+        super().__init__(bounds)
+        self.map = map
+
+    def draw(self, console):
+        super().draw(console)
+
+        # TODO: Get a 2D slice of tiles from the map given a rect based on the window's drawable area
+        drawable_area = self.drawable_area
+        self.map.print_to_console(console, drawable_area)
+
+
+class InfoWindow(Window):
+    def __init__(self, bounds: Rect):
+        super().__init__(bounds, framed=True)
+
+        self.turn_count: int = 0
+
+        drawable_area = self.drawable_area
+        self.hit_points_bar = PercentageBar(
+            position=Point(drawable_area.min_x + 6, drawable_area.min_y),
+            width=20,
+            colors=list(HealthBar.bar_colors()))
+
+    def update_hero(self, hero: Hero):
+        hp, max_hp = hero.fighter.hit_points, hero.fighter.maximum_hit_points
+        self.hit_points_bar.percent_filled = hp / max_hp
+
+    def draw(self, console):
+        super().draw(console)
+
+        drawable_area = self.drawable_area
+        console.print(x=drawable_area.min_x + 2, y=drawable_area.min_y, string='HP:')
+        self.hit_points_bar.render_to_console(console)
+
+        if self.turn_count:
+            console.print(x=drawable_area.min_x, y=drawable_area.min_y + 1, string=f'Turn: {self.turn_count}')
+
+
+class MessageLogWindow(Window):
+    def __init__(self, bounds: Rect, message_log: MessageLog):
+        super().__init__(bounds, framed=True)
+        self.message_log = message_log
+
+    def draw(self, console):
+        super().draw(console)
+        self.message_log.render_to_console(console, self.drawable_area)