[英]How Would I Display the Score in this Simple Game?
我尝试使用blit函数将其粘贴到表面上,但这没有用,因为我无法像对待玩家,敌人和食物变量那样使用表面作为得分的来源。 我也尝试使用self.score = Score((75,575)),但这没有用,因为出于某种原因它说“ self”没有定义。 如何在屏幕上显示乐谱?
import os, sys
import pygame
from pygame.locals import *
pygame.init()
mainClock = pygame.time.Clock()
WINDOWWIDTH = 1000
WINDOWHEIGHT = 700
windowSurface = pygame.display.set_mode((WINDOWWIDTH, WINDOWHEIGHT), 0, 32)
pygame.display.set_caption("Avoid!")
BLACK = (0, 0, 0)
RED = (255, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
player = pygame.Rect(500, 300, 40, 40)
playerImage = pygame.Surface((40, 40))
enemy = pygame.Rect(300, 400, 20, 20)
enemyImage = pygame.Surface((20, 20))
enemyImage.fill((RED))
food = pygame.Rect(300, 500 , 20, 20)
foodImage = pygame.Surface((20, 20))
foodImage.fill((GREEN))
moveLeft = False
moveRight = False
moveUp = False
moveDown = False
MOVESPEED = 6
class Score(pygame.sprite.Sprite):
"""A sprite for the score."""
def __init__(self, xy):
pygame.sprite.Sprite.__init__(self)
self.xy = xy #save xy -- will center our rect on it when we change the score
self.font = pygame.font.Font(None, 50) # load the default font, size 50
self.color = (255, 165, 0) # our font color in rgb
self.score = 0 # start at zero
self.reRender() # generate the image
def update(self):
pass
def add(self, points):
"""Adds the given number of points to the score."""
self.score += points
self.reRender()
if player.colliderect(food):
return add
def reset(self):
"""Resets the scores to zero."""
self.score = 0
self.reRender()
def reRender(self):
"""Updates the score. Renders a new image and re-centers at the initial coordinates."""
self.image = self.font.render("%d"%(self.score), True, self.color)
self.rect = self.image.get_rect()
self.rect.center = self.xy
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
if event.type == KEYDOWN:
if event.key == K_LEFT:
moveRight = False
moveLeft = True
if event.key == K_RIGHT:
moveLeft = False
moveRight = True
if event.key == K_UP:
moveDown = False
moveUp = True
if event.key == K_DOWN:
moveUp = False
moveDown = True
if event.type == KEYUP:
if event.key == K_ESCAPE:
pygame.quit()
sys.exit()
if event.key == K_LEFT:
moveRight = False
moveLeft = True
if event.key == K_RIGHT:
moveLeft = False
moveRight = True
if event.key == K_UP:
moveDown = False
moveUp = True
if event.key == K_DOWN:
moveUp = False
moveDown = True
windowSurface.fill(WHITE)
if moveDown and player.bottom < WINDOWHEIGHT:
player.top += MOVESPEED
if moveUp and player.top > 0:
player.top -= MOVESPEED
if moveLeft and player.left > 0:
player.left -= MOVESPEED
if moveRight and player.right < WINDOWWIDTH:
player.right +=MOVESPEED
if player.colliderect(enemy):
pygame.quit()
sys.exit()
windowSurface.blit(playerImage, player)
windowSurface.blit(enemyImage, enemy)
windowSurface.blit(foodImage, food)
score = Score((75, 575))
pygame.display.update()
mainClock.tick(40)
您的问题与blit或pygame的任何其他部分无关; 这与您使用self关键字有关。 自我是对对象属性的引用。 您不要在Score类本身之外调用self.score。
而是在游戏开始时初始化一个得分对象,然后根据需要添加到得分中。 这是应该如何工作的:
# init Score object
my_score = Score((75, 575))
# add to score like this
my_score.add(5)
# access score attribute like this
# for simplicity, I print the value to the console
print my_score.score # not self.score!
print()将文本输出到stdout(又名命令行)。 我认为您的问题仅在于自我,您了解pygame的部分。
这是我在网上找到的代码块,可以完成您想做的事情:
font = pygame.font.Font(None, 36)
text = font.render("Pummel The Chimp, And Win $$$", 1, (10, 10, 10))
textpos = text.get_rect(centerx=background.get_width()/2)
background.blit(text, textpos)
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