Normalise width & height to avoid issues

main.lua

@@ -1,5 +1,6 @@
 local strings = require("./utils/strings")
 local debug = require("./utils/print_r")
+local calculations = require("./utils/calculations")
 local maze2d = require("./maze")
 local maze3d = require("./maze3d")
 local openscad = require("./openscad")
@@ -58,6 +59,15 @@ if #settings.extras > 0 then
 	settings.mode = table.remove(settings.extras, 1)
 end
 
+
+local new_width = calculations.normalise_dimension(settings.width, settings.path_length, settings.path_width)
+print("[normalise] width "..settings.width.." → "..new_width)
+settings.width = new_width
+
+local new_height = calculations.normalise_dimension(settings.height, settings.path_length, settings.path_width)
+print("[normalise] height "..settings.height.." → "..new_height)
+settings.height = new_height
+
 local function help()
 	print([[
 multimaze: Multidimensional maze generator

utils/calculations.lua

@@ -0,0 +1,10 @@
+local M = {}
+
+function M.normalise_dimension(value, path_length, path_width)
+	local cells = (value - (path_width*2)) / path_length
+	cells = math.floor(cells)
+	local new_value = (cells*path_length)+(path_width*2)
+	return new_value
+end
+
+return M