Let's make a bunch of PNG files

By using standard UNIX tools, along with Python 2, we can generate a large number of random worlds with the TotestraRG32.py script in the parent directory:

SEED=1
while : ; do 
	echo $SEED 
	python2 ../TotestraRG32.py $SEED arid > totestrarg32-T$SEED
	SEED=$(( $SEED + 1 ))
done

However, the output is in an unusual ASCII format. So, let’s make those ASCII maps PNG files. This time, we will need to use Python 3, so let’s set up a virtual environment (recent versions use Python 3 as the default Python interpreter):

virtualenv makemap
. makemap/bin/activate
pip install -r requirements.txt

Now that things are set up, do this every time we want to make PNG files:

. makemap/bin/activate
for map in totestrarg32-T* ; do 
	cat $map | ./plotmap2png.py 
	mv out.png $map.png
	echo $map
done

Voila! We now have a bunch of PNG files we can look at to see which ones make for nice maps.