apparently math.random calls can have trouble with ranges outside of …

…a 32 bit integer

random.lua

@@ -2,7 +2,7 @@
 -- Returns a consistent list of random points within a volume.
 -- Each call to this method will give the same set of points if the same parameters are provided
 mapgen_helper.get_random_points = function(minp, maxp, min_output_size, max_output_size)
-	local next_seed = math.random(1, 1000000000)
+	local next_seed = math.random(1, 2^31)
 	math.randomseed(minetest.hash_node_position(minp) + mapgen_helper.mapgen_seed)
 
 	local count = math.random(min_output_size, max_output_size)
@@ -22,7 +22,7 @@ end
 
 -- Returns a random value based on the x and z coordinates of pos, always the same for the same x and z
 mapgen_helper.xz_consistent_randomp = function(pos)
-	local next_seed = math.random(1, 1000000000000)
+	local next_seed = math.random(1, 2^31)
 	math.randomseed(pos.x + pos.z * 2 ^ 8)
 	local output = math.random()
 	math.randomseed(next_seed)