Okie so I'm releasing the script and instructions on to use this thing.
First you can grab the add-on formatted version
here.
Stick that in your Blockland Add-ons folder and enable it when making a server.
To make it do a terrain, open your console and type:
parsePGM(file location here);
ex. parsePGM("add-ons/script_pgmparser/output.pgm");
This will start to create a new file (that is easier for me to script for) that is the old file name plus _format
The script will read this file and read each height value and place a brick accordingly until it is done.
You can poke at it and make improvements blah blah
Now to the part on how to create PGM files.
Basically I used a program called
World Machine 2.
You make your terrain and then for exporting select the PGM (ASCII) option.
Export that and you have a file that is ready to be put into Blockland.