Slow part

class chunk(object):
    x = 0
    y = 0
    done = False
    offsetx = 0
    offsety = 0
    ID = 0
    def __init__(self,x,y):
        self.x = x
        self.y = y
        self.offsetx = x
        self.offsety = y
        self.x1 = self.x+chunksize #bottom corner
        self.y1 = self.y+chunksize #top corner
    def makeChunk(self):
        global name
        if [self.x,self.y] not in coords:
            self.n = PNMImage(chunksize+1,chunksize+1)
            self.t = PNMImage(chunksize+1,chunksize+1)
            for y in xrange(chunksize+1):
                for x in xrange(chunksize+1):
                    p = perlin.noise(x+self.offsetx,y-self.offsety)
##                    p+=0.5
                    if p >= 0:
                        p*=127.5
                        p+=5
                        self.n.setRedVal(x,y,p)
                        self.n.setGreenVal(x,y,p)
                        self.n.setBlueVal(x,y,p)
                        if p <= 10:
                            value = sand.getXelVal(x,y)
                            self.t.setXelVal(x,y,value)
                        elif p > 10 and p <= 20:
                            value = sand.getXelVal(x,y)
                            self.t.setXelVal(x,y,value)
                        elif p > 20 and p <= 80:
                            value = grass.getXelVal(x,y)
                            self.t.setXelVal(x,y,value)
                        elif p > 80 and p <= 90:
                            value = mountain.getXelVal(x,y)
                            self.t.setXelVal(x,y,value)
                        elif p > 90:
                            value = snow.getXelVal(x,y)
                            self.t.setXelVal(x,y,value)
                    elif p < 0:
                        p+=2
                        value = sand.getXelVal(x,y)
                        self.t.setXelVal(x,y,value)
                        self.n.setRedVal(x,y,p)
                        self.n.setGreenVal(x,y,p)
                        self.n.setBlueVal(x,y,p)
            self.n.makeGrayscale()
##            name+=1
##            name1 = str(name)
##            self.t.write("maps/"+name1+"_.png")
##            self.n.write("maps/"+name1+".png")
            #-------------slow code--------------------#
            self.T = Texture()
            self.T.load(self.t)
            self.T.setWrapU(Texture.WMClamp)
            self.T.setWrapV(Texture.WMClamp)
            #GeoMipTerrain Stuff
            self.terrain = GeoMipTerrain("terrain")
            self.terrain.setHeightfield(self.n)
            self.terrain.setBlockSize(8)#128)
            self.terrain.setNear(256)
            self.terrain.setFar(512)
            self.terrain.setMinLevel(2)
            self.terrain.setFocalPoint(base.camera)
            self.terrain.setBorderStitching(True)
            root = self.terrain.getRoot()
            root.reparentTo(render)
            root.setSz(500)#150)
            self.scaleZ = root.getSz()
            self.terrain.setAutoFlatten(GeoMipTerrain.AFMStrong)
            self.terrain.generate()
            ts = TextureStage("ts0")
            root.setTexture(ts,self.T)
            chunks.append(self.terrain)
            chunks1.append(root)
            root.setPos(self.x,self.y,0)
            #-------------slow code----------------------#
            coords.append([self.x,self.y])
            self.done = True
            self.ID = [self.offsetx/chunksize,self.offsety/chunksize]
##            print len(chunks)