First pass on the logs

The newly-added logs manage a list of messages. Entities do register a
message to it when hitting each other. Display is created, but not yet
added to the layout actually displayed.

squirrelbattle/display/display_manager.py

@@ -3,6 +3,7 @@ from squirrelbattle.display.mapdisplay import MapDisplay
 from squirrelbattle.display.statsdisplay import StatsDisplay
 from squirrelbattle.display.menudisplay import SettingsMenuDisplay, \
     MainMenuDisplay
+from squirrelbattle.display.logsdisplay import LogsDisplay
 from squirrelbattle.display.texturepack import TexturePack
 from typing import Any
 from squirrelbattle.game import Game, GameMode
@@ -20,8 +21,10 @@ class DisplayManager:
         self.mainmenudisplay = MainMenuDisplay(self.game.main_menu,
                                                screen, pack)
         self.settingsmenudisplay = SettingsMenuDisplay(screen, pack)
+        self.logsdisplay = LogsDisplay(screen, pack)
         self.displays = [self.statsdisplay, self.mapdisplay,
-                         self.mainmenudisplay, self.settingsmenudisplay]
+                         self.mainmenudisplay, self.settingsmenudisplay,
+                         self.logsdisplay]
         self.update_game_components()
 
     def handle_display_action(self, action: DisplayActions) -> None:
@@ -36,6 +39,7 @@ class DisplayManager:
         self.mapdisplay.update_map(self.game.map)
         self.statsdisplay.update_player(self.game.player)
         self.settingsmenudisplay.update_menu(self.game.settings_menu)
+        self.logsdisplay.update_logs(self.game.logs)
 
     def refresh(self) -> None:
         if self.game.state == GameMode.PLAY:

squirrelbattle/display/logsdisplay.py

@@ -0,0 +1,17 @@
+from squirrelbattle.display.display import Display
+from squirrelbattle.interfaces import Logs
+
+
+class LogsDisplay(Display):
+
+    def __init__(self, *args) -> None:
+        super().__init__(*args)
+        self.pad = self.newpad(self.rows, self.cols)
+
+    def update_logs(self, logs: Logs) -> None:
+        self.logs = logs
+
+    def display(self) -> None:
+        messages = self.logs.messages[-self.height:].reverse()
+        for i, y in enumerate(range(self.y + self.height - 1, self.y - 1, - 1)):
+            self.pad.addstr(y, self.x, messages[i][:self.width])