Rescale Mount & Blade maps - A python 3.6+ script for rescaling the world map. Performed by multiplying the positions of all "parties" (cities, spawn points, bridges, ..., and actual parties) and map vertices (the geometry of the world map) by a factor. Factors below 0.7 will look cramped. Used by running the script in the module directory. The …

_rescale.py

#!/usr/bin/env python3

import os
import shutil
import re
import sys
import contextlib as cl
import time


@cl.contextmanager
def openw(filename):
    tmpname = filename + '~'
    with open(tmpname,'w') as f:
        exc = yield f
    os.replace(tmpname, filename)


def make_backup_file(filename : str) -> str:
    backup = os.path.join('_rescale',filename)
    if not os.path.exists(backup):
        os.makedirs('_rescale', exist_ok=True)
        shutil.copy(filename,backup)
    return backup

def rescale_map_txt(factor):
    with open(make_backup_file("map.txt")) as mapf, \
         openw('map.txt') as out:
        cb = out.write
        i = iter(mapf)
        cb(next(i))
        for line in i:
            try:
                x,y,z = tuple(map(float, line.split()))
            except:
                cb(line)
                break
            x,y,z = factor*x, factor*y, factor*z
            cb(f'{x:.6f} {y:.6f} {z:.6f}\n')
        for line in i:
            cb(line)

def rescale_parties_txt(factor):
    with open(make_backup_file('parties.txt')) as infile,\
         openw('parties.txt') as outfile:
        cb = outfile.write
        lines = list(infile)
        cb(lines.pop(0))
        cb(lines.pop(0))
        linenum = 2
        while lines:
            linenum += 1
            line = lines.pop(0)
            data = line.split()
            try:
                if len(data) < 20:
                    cb(line)
                else:
                    for idx in range(14,20):
                        data[idx] = '{:.6f}'.format(factor * float(data[idx]))
                    cb(' ' + ' '.join(data) + '\n')
            except Exception as e:
                print(f'At line {linenum} in parties.txt:', file=sys.stderr)
                print(f'  {line!r}', file=sys.stderr)
                print(e)
                break


FACTOR = 0.7
rescale_map_txt(FACTOR)
rescale_parties_txt(FACTOR)
print(f'Done: Rescaled by factor {FACTOR}')