嗨,我有一个游戏的代码,其中有多个水果从天而降,在底部的青蛙必须试图抓住他们。当他接住一个球时,分数就上升了。这只发生在青蛙与一些水果而不是所有水果相撞的时候。在达到某一点后,分数开始随机增加,而且没有任何原因。下面是大部分代码,因为我不确定错误在哪里:
import pygame, sys, time, random
from pygame.locals import *
from math import fabs
######### constants ##########
jumpvel=20
fallingspeed=1
running= True
blue= [129,183 ,253]
pink=[255,174,201]
textcolour= [255,255,255]
x=700//2
y=1000//2
score=0
thingylist= ['fruit1.bmp','fruit2.bmp','fruit3.bmp','fruit4.bmp','fruit5.bmp','fruit1.bmp','fruit2.bmp','fruit3.bmp','fruit4.bmp','fruit5.bmp','naughty1.bmp','naughty2.bmp','naughty3.bmp',]
all_things=[]
for i in range (12):
new_thing_image=pygame.image.load(thingylist[(random.randrange(0,12))])
new_thing_image.set_colorkey(pink)
new_thing_rect=new_thing_image.get_rect()
new_thing_rect.x=random.randrange(0,950)
new_thing_rect.y=-random.randrange(50,500)
all_things.append([new_thing_image,new_thing_rect])
def checkCollision (frog_rect,all_things,score):
collides_with=None
for thing_image, thing_rect in all_things:
if frog_rect.colliderect(thing_rect):
collides_with=True
if collides_with == True:
score= score+100
return collides_with,score
######## initialising screen#########
pygame.init()
gamedisplay=pygame.display.set_mode((1000,600)) #making the screen
pygame.display.set_caption('frog')
clock=pygame.time.Clock()# frames per second
bg=pygame.image.load('actual clouds.bmp').convert()
############ initialising sprites##############
frog= pygame.image.load('actual frog.bmp')
frog.set_colorkey(blue)
frog_rect=frog.get_rect()
frog_rect.centerx=(x)
frog_rect.centery=(y)
##########drawing things#############
def drawThings (all_things):
for item in all_things:
new_thing_image, new_thing_rect= item
gamedisplay.blit(new_thing_image, (new_thing_rect.x, new_thing_rect.y))
#########update display function###########
def update(x,y,all_things,score):
gamedisplay.blit(bg,[0,0])
gamedisplay.blit(frog,(x,y))
for thing in range (len(all_things)):
new_thing_rect=all_things[i][1]
#thing_rect.y=thing_rect.y+fallingspeed
new_thing_rect.y+= fallingspeed
drawThings(all_things)
label=font.render("score "+ str(score) ,1,textcolour)
gamedisplay.blit(label,(750,10))
gamedisplay.blit(heart1,(750,50))
gamedisplay.blit(heart2,(850,50))
gamedisplay.blit(heart2,(800,50))
pygame.display.update()
pygame.time.delay(50)
while running == True:
gamedisplay.blit(bg,[0,0])
gamedisplay.blit(frog,(x,y))
drawThings(all_things)
label=font.render("score "+ str(score) ,1,textcolour)
gamedisplay.blit(label,(750,10))
pygame.display.flip()
pygame.event.pump()
key=pygame.key.get_pressed()
for item in all_things:
new_thing_image, new_thing_rect= item
new_thing_rect.y+= fallingspeed
if new_thing_rect.y >450:
new_thing_rect.x=random.randrange(0,950)
new_thing_rect.y=-random.randrange(50,500)
############collision detection##########
detect,score =checkCollision (frog_rect, all_things,score)
update(x,y,all_things,score)每次它撞到任何掉下来的小坚果时,分数都应该增加,而不仅仅是某些特定的小坚果,也不应该只是开始不停的随机增加。任何帮助都将不胜感激,谢谢!
发布于 2019-04-24 06:45:25
基于代码片段-其中不包括青蛙位置更新代码,我猜测以下问题:
随机得分increasing
不总是有效
这是由于碰撞矩形为青蛙的起始位置定义了一次,但之后永远不会随着青蛙位置的变化而更新。
############ initialising sprites##############
frog= pygame.image.load('actual frog.bmp')
frog.set_colorkey(blue)
frog_rect=frog.get_rect()
frog_rect.centerx=(x) # <-- rect only ever updated here!
frog_rect.centery=(y)这将导致所描述的症状,因为计分对象(水果?)穿过碰撞矩形会增加分数(看起来是随机的),当青蛙还在它的原始位置时,碰撞会完美地工作。如果青蛙的部分位置在rect上,它就会起作用,而一旦青蛙离开了起始位置rect,它就完全不起作用了。
这个问题的解决方案是,每当青蛙位置的x & y更新时,就更新矩形frog_rect的坐标。这可以通过在update()函数中设置frog_rect.centerx和frog_rect.centery来实现:
def update(x, y, all_things, score ):
frog_rect.x = x
frog_rect.y = y青蛙的矩形是用.centerx,.centery坐标初始化的,但是青蛙是在x,y绘制的,所以碰撞矩形也开始有点偏离中心。因此,最好也更新初始化函数:
frog_rect=frog.get_rect()
frog_rect.x = x
frog_rect.y = yhttps://stackoverflow.com/questions/55801747
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