Add flag to modify how noise is scaled

Sometimes, for 3d noise, the scale needs modifying (e.g. used with 2d noise),
while other times the spread alone is correct.

api.lua

@@ -4,15 +4,18 @@ local function scale_noise(noise,scale)
 	s.x = s.x / scale.x
 	s.z = s.z / scale.z
 
-	if noise.dims
-	and noise.dims == 2 then
+	if (noise.dims and noise.dims == 2) then
 		s.y = s.y / scale.z
-		noise.scale = noise.scale / scale.y
-		noise.offset = noise.offset / scale.y
 	else
 		s.y = s.y / scale.y
 	end
 
+	if (dims == 2 and noise.mgmini_scale_values ~= false)
+	or (dims == 3 and noise.mgmini_scale_values) then
+		noise.scale = noise.scale / scale.y
+		noise.offset = noise.offset / scale.y
+	else
+
 	return noise
 end
 

util.lua

@@ -10,6 +10,7 @@ mgmini.zero_noise = {
 }
 
 mgmini.ave_val_def = function(value)
+	minetest.log("error", "Average value noise used")
 	local noise = table.copy(mgmini.zero_noise)
 	noise.offset = value
 	return noise