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python-roguelike/engine.py

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from __future__ import annotations
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import lzma
import pickle
from typing import TYPE_CHECKING
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from tcod.console import Console
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from tcod.map import compute_fov
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import exceptions
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from message_log import MessageLog
import render_functions
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if TYPE_CHECKING:
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from entity import Actor
from game_map import GameMap, GameWorld
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class Engine:
game_map: GameMap
game_world: GameWorld
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def __init__(self, player: Actor):
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self.message_log = MessageLog()
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self.mouse_location = (0, 0)
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self.player = player
def handle_enemy_turns(self) -> None:
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for entity in set(self.game_map.actors) - {self.player}:
if entity.ai:
try:
entity.ai.perform()
except exceptions.Impossible:
pass # Ignore impossible action exceptions from AI.
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def update_fov(self) -> None:
"""Recompute the visible area based on the player's point of view."""
self.game_map.visible[:] = compute_fov(
self.game_map.tiles["transparent"],
(self.player.x, self.player.y),
radius=8,
)
# If a tile is "visible" it should be added to "explored"
self.game_map.explored |= self.game_map.visible
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def render(self, console: Console) -> None:
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self.game_map.render(console)
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self.message_log.render(console=console, x=21, y=45, width=40, height=5)
render_functions.render_bar(
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console,
current_value=self.player.fighter.hp,
maximum_value=self.player.fighter.max_hp,
total_width=20,
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)
render_functions.render_dungeon_level(
console,
dungeon_level=self.game_world.current_floor,
location=(0, 47)
)
render_functions.render_names_at_mouse_location(console, x=21, y=44, engine=self)
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def save_as(self, filename: str) -> None:
"""Save this Engine instance as a compressed file."""
save_data = lzma.compress(pickle.dumps(self))
with open(filename, "wb") as f:
f.write(save_data)