python-roguelike/tile_types.py

from typing import Tuple

import numpy as np  # type: ignore

# Tile graphics structured type compatible with Console.tiles_rgb.
graphic_dt = np.dtype(
    [
        ("ch", np.int32),  # Unicode codepoint.
        ("fg", "3B"),  # 3 unsigned bytes, for RGB colors.
        ("bg", "3B",)
    ]
)

# Tile struct used for statically defined tile data.
tile_dt = np.dtype(
    [
        ("walkable", np.bool),  # True if this tile can be walked over.
        ("transparent", np.bool),  # True if this tile doesn't block FOV.
        ("dark", graphic_dt),  # Graphics for when this tile is not in FOV.
    ]
)


def new_tile(
        *,  # Enforce the use of keywords, so that parameter order doesn't matter
        walkable: int,
        transparent: int,
        dark: Tuple[int, Tuple[int, int, int], Tuple[int, int, int]]
) -> np.ndarray:
    """Helper function for defining individual tile types"""
    return np.array((walkable, transparent, dark), dtype=tile_dt)


floor = new_tile(
    walkable=True,
    transparent=True,
    dark=(ord(" "), (255, 255, 255), (50, 50, 150))
)

wall = new_tile(
    walkable=False,
    transparent=False,
    dark=(ord(" "), (255, 255, 255), (0, 0, 100))
)