问题描述
因此,我尝试制作一个函数create_particle
,然后使该函数使用draw_circle
进行部分绘制。但是,每当我打开窗口时,都会看到灰色的窗口,但没有显示任何粒子。我对pygame和pymunk都非常陌生,因此可以提供任何帮助。
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),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()
解决方法
需要一些更改:
-
draw_circle()
不需要参数 - 绘制圆时,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()