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lab8.py
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lab8.py
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import pygame
FPS = 60
W = 700
H = 700
WHITE = (255, 255, 255)
BLUE = (0, 0, 225)
UP = "up"
DOWN = "down"
RIGHT = "to the right"
LEFT = "to the left"
STOP = "stop"
pygame.init()
sc = pygame.display.set_mode((W, H))
clock = pygame.time.Clock()
x = W // 2
y = H // 2
r = 50
speed = 20
motion = STOP
while 1:
sc.fill(WHITE)
pygame.draw.circle(sc, BLUE, (x, y), r)
pygame.display.update()
for i in pygame.event.get():
if i.type == pygame.QUIT:
exit()
elif i.type == pygame.KEYDOWN:
if i.key == pygame.K_a:
motion = LEFT
elif i.key == pygame.K_d:
motion = RIGHT
elif i.key == pygame.K_w:
motion = UP
elif i.key == pygame.K_s:
motion = DOWN
elif i.key == pygame.K_ESCAPE:
exit()
elif i.type == pygame.KEYUP:
if i.key in [pygame.K_a, pygame.K_d, pygame.K_s, pygame.K_w]:
motion = STOP
if motion == LEFT:
x -= speed
elif motion == RIGHT:
x += speed
elif motion == UP:
y -= speed
elif motion == DOWN:
y += speed
#1 from another side
#if x >= W + r:
# x = 0 - r
#elif x <= 0 - r:
# x = W + r
#elif y >= H + r:
# y = 0 - r
#elif y <= 0 - r:
# y = H + r
#2 stop
#if x == W - r:
# motion = STOP
#elif x == 0 + r:
# motion = STOP
#elif y >= H -r:
# motion = STOP
#elif y <= 0 + r:
# motion = STOP
#3 change direction
if x + r > W or x < 0 + r:
speed = speed*(-1)
if y + r > H or y < 0 + r:
speed = speed*(-1)
clock.tick(FPS)
pygame.quit()