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python-roguelike/game_map.py

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from __future__ import annotations
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from typing import Iterable, Iterator, Optional, TYPE_CHECKING
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import numpy as np # type: ignore
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from tcod.console import Console
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from entity import Actor
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import tile_types
if TYPE_CHECKING:
from engine import Engine
from entity import Entity
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class GameMap:
def __init__(
self,
engine: Engine,
width: int,
height: int,
entities: Iterable[Entity] = ()
):
self.engine = engine
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self.width, self.height = width, height
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self.entities = set(entities)
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self.tiles = np.full((width, height), fill_value=tile_types.wall, order="F")
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self.visible = np.full(
(width, height),
fill_value=False,
order="F"
) # Tiles the player can currently see
self.explored = np.full(
(width, height),
fill_value=False,
order="F"
) # Tiles the player has seen before
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@property
def actors(self) -> Iterator[Actor]:
"""Iterate over this map's living actors."""
yield from (
entity
for entity in self.entities
if isinstance(entity, Actor) and entity.is_alive
)
def get_blocking_entity_at_location(
self,
location_x: int,
location_y: int
) -> Optional[Entity]:
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for entity in self.entities:
if (
entity.blocks_movement
and entity.x == location_x
and entity.y == location_y
):
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return entity
return None
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def get_actor_at_location(self, x: int, y: int) -> Optional[Actor]:
for actor in self.actors:
if actor.x == x and actor.y == y:
return actor
return None
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def in_bounds(self, x: int, y: int) -> bool:
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"""Return True if x and y are inside the bounds of the map."""
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return 0 <= x < self.width and 0 <= y < self.height
def render(self, console: Console):
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"""
Renders the map.
If a tile is in the "visible" array, then draw it with the "light" colors.
If it isn't, but it's in the "explored" array, then draw it with the "dark" colors.
Otherwise, the default is "SHROUD".
:param console:
:return:
"""
console.tiles_rgb[0: self.width, 0: self.height] = np.select(
condlist=[self.visible, self.explored],
choicelist=[self.tiles["light"], self.tiles["dark"]],
default=tile_types.SHROUD,
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)
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entities_sorted_for_rendering = sorted(
self.entities, key=lambda x: x.render_order.value
)
for entity in entities_sorted_for_rendering:
# Only print entities that are in the FOV
if self.visible[entity.x, entity.y]:
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console.print(
x=entity.x,
y=entity.y,
string=entity.char,
fg=entity.color
)