python pygame蒙版碰撞 [英] python pygame mask collision
问题描述
当我尝试使用这段代码时,它仅适用于1个对象,而不适用于每个对象.我正在尝试修改此视频中的代码(
要在不重叠的随机位置找到障碍物,必须评估是否有新障碍物撞到了以前的障碍物中.
创建一个随机位置:
x,y = random.randint(100,400),random.randint(100,400)
并评估是否存在 任何
与新位置重叠的障碍物.
isect = any(j的(obstacle_mask [j] .overlap(obstacle_mask [i],(x-ox [j],y-oy [j])))在范围(i)中)
如果是这种情况,请重复该过程.创建一个新的随机位置并测试是否重叠:
obstacle = []barrier_mask = []oy = []牛= []对于我在范围(4)中:barrier.append(pygame.image.load("obstacle-400x399.png").convert_alpha())barrier_mask.append(pygame.mask.from_surface(obstacle [i]))isect =真而isect:x, y = random.randint(100, 400), random.randint(100, 400)isect =任何(范围(i)中j的(obstacle_mask [j] .overlap(obstacle_mask [i],(x-ox [j],y-oy [j]))))ox.append(x)oy.append(y)
when I try to use this piece of code, it only works for 1 object, not for every. I'm trying to modify code from this video (https://www.youtube.com/watch?v=Idu8XfwKUao). Is there is a simpler way to get a result ?.If there is,please let me know
#part of code that doesn't matter
randomx = [100,400,300]
randomy = [100,0,300]
green_blob = pygame.image.load("greenblob-59x51.png").convert_alpha()
orange_blob = pygame.image.load("orangeblob-59x51.png").convert_alpha()
blob_mask = pygame.mask.from_surface(green_blob)
blob_color = green_blob
obstacle = []
obstacle_mask = []
oy = []
ox = []
for i in range(4):
obstacle.append(pygame.image.load("obstacle-400x399.png").convert_alpha())
obstacle_mask.append(pygame.mask.from_surface(obstacle[i]))
ox.append(random.choice(randomx))
oy.append(random.choice(randomy))
# main loop
while True:
events()
for i in range(4):
mx, my = pygame.mouse.get_pos()
offset = ((mx - int(ox[i]))), ((my - int(oy[i])))
result = obstacle_mask[i].overlap(blob_mask, offset)
if result:
blob_color = orange_blob
else:
blob_color = green_blob
screen.blit(obstacle[i], (ox[i], oy[i]))
screen.blit(blob_color, (mx, my))
pygame.display.update()
CLOCK.tick(FPS)
screen.fill(BLACK)
Your application works fine. The issue is, that result of each evaluation of overlap
cause a change of blob_color
. So the last obstacle in the loop "wins". If the last obstacle overlaps
the blob, then the color is orange_blob
, else it is green_blob
.
Set the green color before the loop. If any obstacle overlaps
the blob, then change it to orange. The blob has to be drawn once after the loop. e.g.:
while True:
events()
blob_color = green_blob
for i in range(4):
mx, my = pygame.mouse.get_pos()
offset = (int(mx - ox[i]), int(my - oy[i]))
if obstacle_mask[i].overlap(blob_mask, offset):
blob_color = orange_blob
screen.blit(obstacle[i], (ox[i], oy[i]))
screen.blit(blob_color, (mx, my))
To find obstacle at random positions, which are not overlapping, you have to evaluate if a new obstacle hits any of the former obstacles.
Create a random position:
x, y = random.randint(100, 400), random.randint(100, 400)
And evaluate if there is any
obstacle that overlap
s the new position.
isect = any(obstacle_mask[j].overlap(obstacle_mask[i], (x-ox[j], y-oy[j])) for j in range(i))
If that is the case, then repeat the process. Create a new random position and test for overlapping:
obstacle = []
obstacle_mask = []
oy = []
ox = []
for i in range(4):
obstacle.append(pygame.image.load("obstacle-400x399.png").convert_alpha())
obstacle_mask.append(pygame.mask.from_surface(obstacle[i]))
isect = True
while isect:
x, y = random.randint(100, 400), random.randint(100, 400)
isect = any(obstacle_mask[j].overlap(obstacle_mask[i], (x-ox[j], y-oy[j])) for j in range(i))
ox.append(x)
oy.append(y)
这篇关于python pygame蒙版碰撞的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!