Game of life rules 20204/11/2023 ALIVE = 'O' # The character representing a living cell. # (!) Try changing ALIVE to '#' or another character: 14. HEIGHT = 20 # The height of the cell grid. The classic cellular automata simulation. """Conway's Game of Life, by Al Sweigart 2. The cells variable’s dictionary represents the current state of the cells, while nextCells stores the dictionary for the cells in the next step in the simulation.ġ. Lines 40 to 44 are set up to print a representation of these dictionaries onto the screen. Both dictionaries have (x, y) tuples for keys (where x and y are integers), 'O' for living cells, and ' ' for dead cells. The state of the cells is stored in dictionaries in the cells and nextCells variables. When you run conwaysgameoflife.py, the output will look like this: O O OO O O More information about Conway’s Game of Life can be found at, and more information about Martin Gardner at. Tragically, Professor Conway passed away of complications from COVID-19 in April 2020. There is a large body of research regarding the patterns that these simple rules produce. The cells don’t “remember” any older states. The living or dead state of the cells in the next step of the simulation depends entirely on their current state. Any other cell dies or stays dead in the next step of the simulation.Dead cells with exactly three neighbors become alive in the next step of the simulation.Living cells with two or three neighbors stay alive in the next step of the simulation.Today, it’s a favorite among programmers and computer scientists, though it’s more an interesting visualization than a true “game.” The two-dimensional board has a grid of “cells,” each of which follows three simple rules: It was invented by mathematician John Conway in 1970 and popularized by Martin Gardner’s “Mathematical Games” column in Scientific American. So, to make the animation last longer and make the evolution steps easier to see, I left the frame delay at the default value (which seems to be around half a second).Conway’s Game of Life is a cellular automata simulation that follows simple rules to create interesting patterns. Perhaps this is a bug that has been fixed in newer versions of MATLAB. Here's the nicely-formatted code: function l(f,N),Īlthough IMWRITE is supposed to create a GIF that loops infinitely by default, my GIF is only looping once. I thought for fun I'd see if I could dump the output to a GIF file instead of a text file, while still keeping the character count below 140 (i.e. You learn something new every day! function l(f,N),Īnd here's how the program is run from the MATLAB Command Window: l in.txt 100Īdditional Challenge: Tweetable GIF maker - 136 characters Here's the easier-to-read version (with unnecessary newlines and whitespace added for better formatting): function l(f,N),Īnd here's how the program is run from the MATLAB Command Window: l('in.txt',100)Īfter a comment about calling functions with a command syntax, I dug a little deeper and found out that MATLAB functions can in fact be invoked with a command-line format (with some restrictions). The winner will be determined by character count. EDIT: You do need to have newlines in your output file.You don't need to deal with the edges of the board (wraparound, infinite grids.You need to generate out.txt (overwrite if it exists) in the specified format.You need to accept an input file and the number of iterations as arguments.You need to use file I/O to read/write the files.Here is an example run with relevant files: Finally, it will output to an ASCII file out.txt the state of the system after N iterations. ![]() Your program will read in a 40x80 character ASCII text file specified as a command-line argument, as well as the number of iterations (N) to perform.
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