我想用 Perlin Noise 创建一个 2D 浮点列表。我希望每次运行程序时生成的值都不同。但是,我不确定如何为我在 GitHub 上找到的噪声库提供随机种子。
如何让程序每次运行时生成不同的值?
我的代码:
from __future__ import division
import noise
import math
from singleton import ST
def create_map_list():
"""
This creates a 2D list of floats using the noise library. It then assigns
ST.map_list to the list created. The range of the floats inside the list
is [0, 1].
"""
# used to normalize noise to [0, 1]
min_val = -math.sqrt(2) / 2
max_val = abs(min_val)
map_list = []
for y in range(0, ST.MAP_HEIGHT):
row = []
for x in range(0, ST.MAP_WIDTH):
nx = x / ST.MAP_WIDTH - 0.5
ny = y / ST.MAP_HEIGHT - 0.5
row.append((noise.pnoise2(nx, ny, 8) - min_val) / (max_val - min_val))
map_list.append(row )
ST.map_list = map_list