import math
import random
import perlin



def gen(maxx,maxy,maxz):

	noise = perlin.Generate(maxx,maxy)


	choices = ['grass','dirt']
	output = []
	for x in xrange(maxx):
		for y in xrange(maxy):
			for z in xrange(maxz):
				#if z == 0 or z == (maxz -1) or x == 0 or x == (maxx -1) or y == 0 or y == (maxy -1):
					#output.append((x,y,z,'metal'))
				if False:
					pass
				elif z <= noise[x][y]:
					c = random.choice(choices)
					if c:
						output.append((x,y,z,c))
	return output