Show Entity under mouse cursor in a line above the hit points

erynrl/engine.py

@@ -4,7 +4,7 @@
 
 import random
 from dataclasses import dataclass
-from typing import TYPE_CHECKING, MutableSet, NoReturn
+from typing import TYPE_CHECKING, MutableSet, NoReturn, Optional
 
 import tcod
 
@@ -58,6 +58,7 @@ class Engine:
         self.message_log = MessageLog()
 
         self.event_handler: 'EventHandler' = MainGameEventHandler(self)
+        self.current_mouse_point: Optional[Point] = None
 
         self.hero = Hero(position=self.map.generator.rooms[0].center)
         self.entities: MutableSet[Entity] = {self.hero}
@@ -104,12 +105,20 @@ class Engine:
         messages_rect = Rect(Point(x=27, y=45), Size(width=40, height=5))
         self.message_log.render_to_console(console, messages_rect)
 
+        entities_at_mouse_position = []
         for ent in sorted(self.entities, key=lambda e: e.render_order.value):
-            # Only print entities that are in the field of view
+            # Only process entities that are in the field of view
             if not self.map.visible[tuple(ent.position)]:
                 continue
+
             ent.print_to_console(console)
 
+            if ent.position == self.current_mouse_point:
+                entities_at_mouse_position.append(ent)
+
+        if len(entities_at_mouse_position) > 0:
+            console.print(x=1, y=43, string=', '.join(e.name for e in entities_at_mouse_position))
+
     def run_event_loop(self, context: tcod.context.Context, console: tcod.Console) -> NoReturn:
         '''Run the event loop forever. This method never returns.'''
         while True:
@@ -118,7 +127,7 @@ class Engine:
             context.present(console)
 
             self.begin_turn()
-            self.event_handler.wait_for_events()
+            self.event_handler.handle_events(context)
             self.finish_turn()
 
     def process_input_action(self, action: Action) -> ActionResult:
@@ -240,12 +249,10 @@ class Engine:
 
     def kill_actor(self, actor: Actor) -> None:
         '''Kill an entity. Remove it from the game.'''
-
         if actor == self.hero:
             # When the hero dies, the game is over.
-            # TODO: Transition to game over state
-            log.ACTIONS.debug('Time to die.')
+            log.ACTIONS.info('Time to die.')
             self.event_handler = GameOverEventHandler(self)
         else:
-            log.ACTIONS.debug('%s dies', actor)
+            log.ACTIONS.info('%s dies', actor)
             self.entities.remove(actor)

erynrl/events.py

@@ -8,7 +8,7 @@ import tcod
 
 from . import log
 from .actions import Action, ExitAction, RegenerateRoomsAction, BumpAction, WaitAction
-from .geometry import Direction
+from .geometry import Direction, Point
 
 if TYPE_CHECKING:
     from .engine import Engine
@@ -20,9 +20,10 @@ class EventHandler(tcod.event.EventDispatch[Action]):
         super().__init__()
         self.engine = engine
 
-    def wait_for_events(self):
+    def handle_events(self, context: tcod.context.Context):
         '''Wait for events and handle them.'''
         for event in tcod.event.wait():
+            context.convert_event(event)
             self.handle_event(event)
 
     def handle_event(self, event: tcod.event.Event) -> None:
@@ -87,6 +88,12 @@ class MainGameEventHandler(EventHandler):
 
         return action
 
+    def ev_mousemotion(self, event: tcod.event.MouseMotion) -> Optional[Action]:
+        mouse_point = Point(event.tile.x, event.tile.y)
+        if not self.engine.map.tile_is_in_bounds(mouse_point):
+            mouse_point = None
+        self.engine.current_mouse_point = mouse_point
+
 class GameOverEventHandler(EventHandler):
     '''When the game is over (the hero dies, the player quits, etc), this event handler takes over.'''
 

erynrl/map.py

@@ -25,6 +25,7 @@ class Map:
 
     @property
     def rooms(self) -> List['Room']:
+        '''The list of rooms in the map'''
         return self.generator.rooms
 
     def random_walkable_position(self) -> Point:
@@ -35,9 +36,11 @@ class Map:
         return random_position_in_room
 
     def tile_is_in_bounds(self, point: Point) -> bool:
+        '''Return True if the given point is inside the bounds of the map'''
         return 0 <= point.x < self.size.width and 0 <= point.y < self.size.height
 
     def tile_is_walkable(self, point: Point) -> bool:
+        '''Return True if the tile at the given point is walkable'''
         return self.tiles[point.x, point.y]['walkable']
 
     def print_to_console(self, console: tcod.Console) -> None: