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python - 在乒乓球比赛中得分。如何在乒乓球比赛中更新分数？

问题描述

好的，所以我正在创建游戏乒乓球并且我目前正在设置分数。有一个小错误我无法修复。我尝试的代码是R2Score = R2Score + 1让它每次离开屏幕时添加一个点。它告诉我这段代码有错误，我正在研究如何修复它。此外，当它要离开屏幕时，球会减慢速度，我对为什么也会发生这种情况感到困惑。

错误：

Traceback (most recent call last):
File "/Users/name/Documents/PongGame.py", line 130, in <module>
   R2Score = R2Score + 1
TypeError: unsupported operand type(s) for +: 'pygame.Surface' and 'int'

# import the necessary modules
import pygame
import sys
import time

#initialize pygame
pygame.init()
screenSize=(700,500)
screen=pygame.display.set_mode((screenSize), 0)

# set the caption for the screen
pygame.display.set_caption("Pong Game")

# define colours you will be using
WHITE = (255,255,255)
GREEN = (0,255,0)
RED = (255,0,0)
BLUE = (0,0,255)
BLACK = (0,0,0)
YELLOW = (255,255,0)

# set the size for the surface (screen)
screen_h = screen.get_height()
screen_w = screen.get_width()
cx = int(screen_w/2)
cy = int(screen_h/2)

#initialize variables for player
#variables for first rectangle
R1x = 660
R1y = 300
R1w = 10
R1h = 132

R1dx = 0
R1dy = 0
R1_score = 0

#variables for second rectangle
R2x = 10
R2y = 2
R2w = 10
R2h = 132

R2dx = 0
R2dy = 0
R2_score = 0

#ball variables
bx = cx
by = cy
dby = 3
dbx = 3
br = 5
cy =  screen.get_height()/2
cx =  screen.get_width()/2

# variable for scores
R1_score = 0
R2_score = 0

playerRect = pygame.Rect(R1x, R1y, R1w, R1h)
playerRect2 = pygame.Rect(R2x, R2y, R2w, R2h)
ballRect = pygame.Rect (cx,cy,30,30)

#speed
speed = 3

fontsize = 50
fontScore = pygame.font.SysFont('arial', 50)
fontScore = pygame.font.SysFont('arial', 50)

R1Score = fontScore.render(str(R1_score), True, (WHITE))
R2Score = fontScore.render(str(R2_score), True, (WHITE))

# speed of object "clock"
clock = pygame.time.Clock()

# set main loop to True so it will run
main = True
# main loop
while main:
    for event in pygame.event.get(): # check for any events (i.e key press, mouse click etc.)
        if event.type ==pygame.QUIT: # check to see if it was "x" at top right of screen
            main = False         # set the "main" variable to False to exit while loop
        if event.type ==pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                R1dx = 0
                R1dy = -speed
            elif event.key == pygame.K_DOWN:
                R1dx = 0
                R1dy = speed
            if event.key == pygame.K_w:
                R2dx = 0
                R2dy = -speed
            elif event.key == pygame.K_s:
                R2dx = 0
                R2dy = speed
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_UP or event.key == pygame.K_DOWN:
                R1dx = 0
                R1dy = 0
            elif event.key == pygame.K_w or event.key == pygame.K_s:
                R2dx = 0
                R2dy = 0

    playerRect.y = playerRect.y + R1dy
    playerRect2.y = playerRect2.y + R2dy
    ballRect.move_ip(dbx,dby)


    R1y = R1dy + R1y
    R2y = R2dy + R2y
    bx = dbx + bx
    by = dby + by

    if R1y >= screen_h - 80 or R1y < 0:
        R1dy = 0
    if R2y >= screen_h - 80 or R2y < 0:
        R2dy = 0
    if by >= screen_h - br:
        dby = -1
    if by <= 15:
        dby = 1
    if bx >= R2x - br and by - R2y > 0 and by - R2y <100:
        dbx = -1
    if bx >= R1x - br and by - R1y > 0 and by - R1y <100:
        dbx = 1
    if bx == 1:
        R2Score = R2Score + 1
        pause = True
    if bx == 699:
        R2Score = R2Score + 1
        pause = True

    #collision of ball
    if ballRect.top <= 0:
        dby = -dby
    if ballRect.bottom >= screen_h:
        dby = -dby

    if ballRect.colliderect(playerRect2):
        dbx = -dbx
    if ballRect.colliderect(playerRect):
        dbx = -dbx

    screen.fill(BLACK)

    # draw the shapes
    pygame.draw.rect(screen, WHITE,(playerRect),0)
    pygame.draw.rect(screen, WHITE,(playerRect2),0)
    pygame.draw.circle(screen, RED,ballRect.center,br,0)
    screen.blit(R1Score, (280,10))
    screen.blit(R2Score, (400,10))

    # we are using .flip() here,  it basically works the same as .update()
    time.sleep(0.005)
    pygame.display.flip()

# quit pygame and exit the program (i.e. close everything down)
pygame.quit()
sys.exit()

标签： pythonpython-3.xpygame

解决方案

R2Score是一个pygame.Surface对象，那么你期望R2Score = R2Score + 1什么？
您不能将 1 添加到Surface.

如果你想增加分数，那么你必须（重新）渲染Surface. 例如：

if bx == 1:
    R1_score += 1
    R1Score = fontScore.render(str(R1_score), True, (WHITE))

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