vilmibm/tilde-train
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noelle 2025-06-01 22:24:08 -04:00
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tilde-train.py
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@ -1,56 +1,56 @@
#!/usr/bin/env python3
## _ _ _ _ _ _
## | |_(_) |__| |___ | |_ _ _ __ _(_)_ _
## | _| | / _` / -_)| _| '_/ _` | | ' \
## \__|_|_\__,_\___(_)__|_| \__,_|_|_||_|
##
## tilde.train is an instance of TerminalTrain. It was originally developed
## by cmccabe on tilde.town (https://tildegit.org/cmccabe/TerminalTrain) but is now
## maintained by vilmibm.
##
## If you want to contribute code improvements, create a pull request here:
## https://git.tilde.town/vilmibm/tilde-train
##
## -----------------
##
## WHAT IS IT?
## like sl (the ls typo prank), but each car on the train is a x*y character ascii art
## produced by tilde.town.
##
## ( original sl source code of sl? https://github.com/mtoyoda/sl )
##
## TODO:
## * loosen the restriction on allowable characters in train cars. right now, limited
## to characters in python's string.printable list.
## * turn main loop into a function, so cmd line arg reader can call it (with -p) and quit.
## * figure out why tilde.train doesn't work in some terminals (sthg sthg unicode...)
## * BUGFIX-1 - something about inclusion default cars adding extra "links" to the train.
## * the -p (print train) option should print all cars, not limited to the max_cars value.
## * related to BUGFIX-1, that seems to impact spacers (links) between cars.
## * allow users to create multiple frames so their cars can be animated (difficulty=med+)
## * allow user configurable speed and number of train cars
## * allow users to move the train up or down with arrow keys
## -- worked with asciimatics, but python curses blocks on getch()
##
# _ _ _ _ _ _
# | |_(_) |__| |___ | |_ _ _ __ _(_)_ _
# | _| | / _` / -_)| _| '_/ _` | | ' \
# \__|_|_\__,_\___(_)__|_| \__,_|_|_||_|
#
# tilde.train is an instance of TerminalTrain. It was originally developed
# by cmccabe on tilde.town (https://tildegit.org/cmccabe/TerminalTrain) but is now
# maintained by vilmibm.
#
# If you want to contribute code improvements, create a pull request here:
# https://git.tilde.town/vilmibm/tilde-train
#
# -----------------
#
# WHAT IS IT?
# like sl (the ls typo prank), but each car on the train is a x*y character ascii art
# produced by tilde.town.
#
# ( original sl source code of sl? https://github.com/mtoyoda/sl )
#
# TODO:
# * loosen the restriction on allowable characters in train cars. right now, limited
# to characters in python's string.printable list.
# * turn main loop into a function, so cmd line arg reader can call it (with -p) and quit.
# * figure out why tilde.train doesn't work in some terminals (sthg sthg unicode...)
# * BUGFIX-1 - something about inclusion default cars adding extra "links" to the train.
# * the -p (print train) option should print all cars, not limited to the max_cars value.
# * related to BUGFIX-1, that seems to impact spacers (links) between cars.
# * allow users to create multiple frames so their cars can be animated (difficulty=med+)
# * allow user configurable speed and number of train cars
# * allow users to move the train up or down with arrow keys
# -- worked with asciimatics, but python curses blocks on getch()
#
from random import shuffle ## allowing us to randomize selection of cars.
import glob ## allowing us to search the file system for .choochoo files.
import sys ## so we can read command line arguments.
from random import shuffle # allowing us to randomize selection of cars.
import glob # allowing us to search the file system for .choochoo files.
import sys # so we can read command line arguments.
import curses
from signal import signal, SIGINT
import time ## allowing the loop steps of train animation to be slowed
import string ## for input validation
import time # allowing the loop steps of train animation to be slowed
import string # for input validation
from inspect import cleandoc
from pathlib import Path
traincarFN = ".choochoo"
max_x = 35 ## max length of train car.
max_y = 10 ## max height of train car.
max_cars = 10 ## most cars to include in one train.
print_train = False ## print train to file (instead of the screen scroll)
max_x = 35 # max length of train car.
max_y = 10 # max height of train car.
max_cars = 10 # most cars to include in one train.
print_train = False # print train to file (instead of the screen scroll)
train = [""]*max_y ## empty train of correct height.
train = [""]*max_y # empty train of correct height.
cars: list[list[str]] = []
engine = [
@ -134,10 +134,10 @@ def test_user_car():
choochoo_list = choochoo_string.split("\n")
car = "\n".join(choochoo_list)
car2 = car.replace("\t", "") ## do not allow tabs
car2 = car2.replace("\v", "") ## do not allow vertical tabs
car2 = car2.replace("\f", "") ## do not allow line feeds
car2 = car2.replace("\r", "") ## do not allow carriage returns
car2 = car.replace("\t", "") # do not allow tabs
car2 = car2.replace("\v", "") # do not allow vertical tabs
car2 = car2.replace("\f", "") # do not allow line feeds
car2 = car2.replace("\r", "") # do not allow carriage returns
car2 = ''.join([i if string.printable.find(i) >= 0 else ' ' for i in car2])
print("")
@ -194,42 +194,42 @@ def link_car(car: list[str]):
return car
def validate_car(car: list[str]):
## this function (1) checks that a train car isn't too tall or too long
## (2) pads it vertically or on the right side if it is too short or if
## not all lines are the same length and (3) removes bad characters.
# this function (1) checks that a train car isn't too tall or too long
# (2) pads it vertically or on the right side if it is too short or if
# not all lines are the same length and (3) removes bad characters.
car_str = "\n".join(car)
car_str = ''.join([i if ord(i) < 128 else ' ' for i in car_str])
car_list = car_str.split("\n")
## remove blank lines from top and bottom of car,
## so we can estimate its true size.
# remove blank lines from top and bottom of car,
# so we can estimate its true size.
while car_list[0].strip() == "":
car_list.pop(0) ## clear top
car_list.pop(0) # clear top
while car_list[(len(car_list)-1)].strip() == "":
car_list.pop() ## clear bottom
car_list.pop() # clear bottom
## len(choochoo_list) is the height of the train car, in number of rows.
# len(choochoo_list) is the height of the train car, in number of rows.
if len(car_list) > max_y+1 or len(car_list) == 0:
return 0 ## train car too tall or non-existant; skip it.
return 0 # train car too tall or non-existant; skip it.
## vertically pad short cars with 1 space (lines will be lengthened later).
# vertically pad short cars with 1 space (lines will be lengthened later).
while len(car_list) < max_y:
car_list = [" "] + car_list
for idx,row in enumerate(car_list):
car_list[idx] = row.rstrip()
longest_line = len(max(car_list, key=len)) ## longest line in .choochoo file.
longest_line = len(max(car_list, key=len)) # longest line in .choochoo file.
for idx,row in enumerate(car_list):
if len(row) > max_x+1: ## check length of each row in .choochoo file.
return 0 ## train car too long; skip it.
if len(row) > max_x+1: # check length of each row in .choochoo file.
return 0 # train car too long; skip it.
elif "\t" in row or "\v" in row or "\f" in row or "\r" in row:
return 0 # skip if contains tabs, vert tabs, line feeds or carriage ret
elif len(row) < longest_line:
padding = " "*(longest_line - len(row))
car_list[idx] += padding ## add padding spaces.
car_list[idx] += padding # add padding spaces.
return car_list
@ -238,19 +238,19 @@ def print_all_cars():
for fname in glob.glob('/home/*/' + traincarFN):
try:
with open(fname, 'r') as myfile:
## print fname ## debug, print file path and name
# print fname # debug, print file path and name
choochoo_string = myfile.read()
choochoo_list = choochoo_string.split("\n")
if len(choochoo_list) > max_y+1:
continue ## the train car was too tall; skip it.
continue # the train car was too tall; skip it.
car = validate_car(choochoo_list) ## printing is only a DEBUG feature.
car = validate_car(choochoo_list) # printing is only a DEBUG feature.
if car != 0:
print("")
print(fname + ":")
print("\n".join(car)) ## print the car to stdout
print("\n".join(car)) # print the car to stdout
## HOW TO CLOSE THE FILE HANDLE? fname.close(), close(fname), ...?
# HOW TO CLOSE THE FILE HANDLE? fname.close(), close(fname), ...?
except:
pass;
# print "Cannot open " + fname # for debuggering purposes
@ -286,12 +286,12 @@ def chuggachugga(stdscr: curses.window):
stdscr.refresh()
time.sleep(.03)
# ev = stdscr.getch() ## seems like curses waits for input, which won't work here.
# ev = stdscr.getch() # seems like curses waits for input, which won't work here.
# if ev in (ord('Q'), ord('q')):
# return
# elif ev == curses.KEY_UP: ## up
# elif ev == curses.KEY_UP: # up
# y_pos += 1
# elif ev == curses.KEY_DOWN: ## down
# elif ev == curses.KEY_DOWN: # down
# y_pos -= 1
@ -318,28 +318,28 @@ if len(sys.argv) == 2 and ("-a" in sys.argv[1] or "all" in sys.argv[1]):
sys.exit()
## start a loop that collects all .choochoo files and processes on in each loop
# start a loop that collects all .choochoo files and processes on in each loop
for fname in glob.glob('/home/*/' + traincarFN):
car_len = 1
try:
with open(fname, 'r') as myfile:
## print fname ## debug, print file path and name
# print fname # debug, print file path and name
choochoo_string = myfile.read()
choochoo_list = choochoo_string.split("\n")
if len(choochoo_list) > max_y+1:
continue ## the train car was too tall; skip it.
continue # the train car was too tall; skip it.
car = validate_car(choochoo_list) ## printing is only a DEBUG feature.
car = validate_car(choochoo_list) # printing is only a DEBUG feature.
if car != 0:
cars.append(car) ## start a list of lists (list of cars) here.
cars.append(car) # start a list of lists (list of cars) here.
## HOW TO CLOSE THE FILE HANDLE? fname.close(), close(fname), ...?
# HOW TO CLOSE THE FILE HANDLE? fname.close(), close(fname), ...?
except:
pass;
##print "Cannot open " + fname # for debuggering purposes
#print "Cannot open " + fname # for debuggering purposes
while len(cars) < max_cars:
cars.append([*default_car]) ## add copies of default cars if train too short
cars.append([*default_car]) # add copies of default cars if train too short
shuffle(cars)
cars = cars[0:max_cars]