wow thats fast!!. Its currently rendering (picked the standard "medium" settings which turn out to be pretty large so that'l take about 5 to 10 minutes). I noticed that the first row and column are empty, I haven't tested that yet but i think that will render an error. Also I haven't yet implemented the door type code e.g. S and P but If i've coded it correctly they should just be ignored while rendering. I'm curious what the outcome is. If it works out I'll post the resulting image here.