python - Pygame显示2D numpy数组

Question

我创建了一个 2D numpy 数组 20x20，其随机值为 0、1 或 2。我想要的是每个值都有一个相应的颜色值，并且 pygame 显示这些相应颜色值的网格。例如，0 变成白色方 block ，1 变成红色方 block ，2 变成绿色方 block 。我似乎找不到办法做到这一点。我目前的代码基本上是教程的大杂烩，没有一个真正有效，但你看:

import numpy
import pygame

gridarray = numpy.random.randint(3, size=(20, 20))
print(gridarray)

colour0=(120,250,90)
colour1=(250,90,120)
colour2=(255,255,255)

(width,height)=(300,300)

screen = pygame.pixelcopy.make_surface(gridarray)
pygame.display.flip()
screen.fill(colour2)

running = True
while running:
  for event in pygame.event.get():
    if event.type == pygame.QUIT:
      running = False

Answer 1

您可以创建一个包含颜色的数组

colors = np.array([[120, 250, 90], [250, 90, 120], [255, 255, 255]])

并使用您的gridarray作为索引数组:colors[gridarray]。您将得到一个如下所示的数组:

array([[[120, 250,  90],
        [250,  90, 120],
        [250,  90, 120],
        ...,

将其传递给pygame.surfarray.make_surface，将其转换为pygame.Surface，您可以将其传输到屏幕上。

import pygame as pg
import numpy as np


pg.init()
screen = pg.display.set_mode((640, 480))
clock = pg.time.Clock()

colors = np.array([[120, 250, 90], [250, 90, 120], [255, 255, 255]])
gridarray = np.random.randint(3, size=(20, 20))
surface = pg.surfarray.make_surface(colors[gridarray])
surface = pg.transform.scale(surface, (200, 200))  # Scaled a bit.

running = True
while running:
    for event in pg.event.get():
        if event.type == pg.QUIT:
            running = False

    screen.fill((30, 30, 30))
    screen.blit(surface, (100, 100))
    pg.display.flip()
    clock.tick(60)