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所以，我正在尝试创建一个函数create_particle，然后使该函数绘制一个部分draw_circle。但是，每当我打开窗口时，我都会看到灰色窗口，但没有显示任何粒子。我对 pygame 和 pymunk 都非常陌生，因此不胜感激。

import sys, pygame, random, pymunk

BG = (94, 93, 93)
S_width = 800
S_height = 800

pygame.init()
Window = pygame.display.set_mode((S_width,S_height))
clock = pygame.time.Clock()
pygame.display.set_caption("H20 Particle simulation")
Window.fill(BG)
space = pymunk.Space()
space.gravity = (0,100)

def create_particle(space):
    body = pymunk.Body(1, 100, body_type = pymunk.Body.DYNAMIC)
    body.position = (400, 400)
    shape = pymunk.Circle(body,80)
    space.add(body, shape)
    return shape

def draw_circle(circle):
    for circle in circles:
        pos_x = int(circle.body.position.x)
        pos_y = int(circle.body.position.y)
        pygame.draw.circle(screen,(0,0,0),circle.body.position20)

circles = []
circles.append(create_particle(space))



while True:
    Window.fill((217,217,217))
    clock.tick(120)
    pygame.display.update()
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
4

1 回答 1

3

需要进行一些更改：

  • draw_circle()不需要参数
  • 画圆的时候需要指定坐标和半径
  • 在主循环中，调用draw_circle()和space.step(0.02)

这是更新的代码：

def draw_circle():
    for circle in circles:
        pos_x = int(circle.body.position.x)
        pos_y = int(circle.body.position.y)
        pygame.draw.circle(Window,(0,200,0), (pos_x, pos_y), 20)

circles = []
circles.append(create_particle(space))

while True:
    Window.fill((217,217,217))
    draw_circle()
    space.step(0.02)
    clock.tick(120)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit() 
    pygame.display.update()
于 2020-08-24T02:40:07.640 回答