There's a good method to create a tilemap from an ascii matrix?-CodePudding

The idea is simple, but the execution is bothering me. I've created a small random dungeon generator that create a grid like this:

This is a sample 6x6 dungeon where 0 is a wall and 1 is an open path.

The conversion from this to some sort of tile id map is simple, and trivial, but creating the image itself is the hard part.

I want to know if there's a lib, or method to achieve that. If not, then what would you do?

This is not part of a game, and only a dungeon generator for DND. Any language is OK, but the generator was made in Go.

CodePudding user response：

I kind of managed to get a solution, but it will be a Python only. Using PIL I can make a mosaic with tile images and create the map. It's not a solid solution made from scratch but it can do the Job.

I'm still open for another approach.

CodePudding user response：

You can use OpenCV for this task. Probably PIL can do the same, don't have exp with it.

import cv2
import numpy as np

data_list = [
    [0, 0, 0, 0, 0, 1],
    [0, 0, 0, 1, 1, 1],
    [0, 0, 0, 1, 1, 1],
    [0, 0, 1, 1, 0, 1],
    [0, 1, 1, 1, 0, 1],
    [0, 1, 1, 1, 1, 1]
]

arr = np.array(data_list, dtype=np.uint8) * 255
arr = cv2.resize(arr, (0, 0), fx=50, fy=50, interpolation=cv2.INTER_NEAREST)
cv2.imshow("img", arr)
cv2.waitKey()

# or you can save on disk
cv2.imwrite("img.png", arr)

CodePudding user response：

use np.block()

# a bunch of sprites/images, all the same size
# load them however you like
tiles = [...]

data_list = [
    [0, 0, 0, 0, 0, 1],
    [0, 0, 0, 1, 1, 1],
    [0, 0, 0, 1, 1, 1],
    [0, 0, 1, 1, 0, 1],
    [0, 1, 1, 1, 0, 1],
    [0, 1, 1, 1, 1, 1]
]

picture = np.block([
    [tiles[k] for k in row]
    for row in data_list
])

Or, if you use any kind of game engine, or something even more trivial, like SDL/PyGame, simply "blit" each tile.

PIL, as you found out, is perfectly capable of blitting one image (tile) onto another (whole map).