如何使槳在pygame pong中移動？

Question

我是pygame的初學者。 最近，我編寫了一個Pong游戲。

但是，當我按鍵盤上的某些鍵時，無法使撥片移動。 有人可以幫我檢查代碼。 我認為在給槳划新的位置時可能會遇到一些問題。 但我無法解決。 並希望給我一些提示。

謝謝！

代碼如下：

import pygame, sys, time,math
from pygame.locals import *


# User-defined functions

def main():

   # Initialize pygame
   pygame.init()

   # Set window size and title, and frame delay
   surfaceSize = (500, 400) # window size
   windowTitle = 'Pong' #window title
   frameDelay = 0.005 # smaller is faster game

   # Create the window
   pygame.key.set_repeat(20, 20)
   surface = pygame.display.set_mode(surfaceSize, 0, 0)
   pygame.display.set_caption(windowTitle)

   # create and initialize red dot and blue dot
   gameOver = False
   color1=pygame.Color('white')
   center1 = [250, 200]
   radius1=10
   score=[0, 0]
   speed1=[4,1]
   location1=[50, 150]
   location2=[450, 150]
   size=(5, 100)
   position1=(0,0)
   position2=(350,0)

   rect1=pygame.Rect(location1,size)
   rect2=pygame.Rect(location2,size)

   # Draw objects
   pygame.draw.circle(surface, color1, center1, radius1, 0)

   # Refresh the display
   pygame.display.update()

   # Loop forever
   while True:
      # Handle events
      for event in pygame.event.get():
         if event.type == QUIT:
            pygame.quit()
            sys.exit()

   # Handle additional events

         if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_q:
               location1[1] =+ 1
            if event.key == pygame.K_p:
               location2[1] =+ 1
            if event.key == pygame.K_a:
               location1[1] =- 1
            if event.key == pygame.K_i:
               location2[1] =- 1           

         if event.type == pygame.KEYUP:
            if event.key == pygame.K_q:
               location1[1] =+ 0
            if event.key == pygame.K_p:
               location2[1] =+ 0
            if event.key == pygame.K_a:
               location1[1] =- 0
            if event.key == pygame.K_i:
               location2[1] =- 0       

         # Handle additional events

      # Update and draw objects for the next frame
      gameOver = update(surface,color1,center1,radius1,speed1,rect1,rect2,score,position1,position2)


      # Refresh the display
      pygame.display.update()

      # Set the frame speed by pausing between frames
      time.sleep(frameDelay)

def update(surface,color1,center1,radius1,speed1,rect1,rect2,score,position1,position2):
   # Check if the game is over. If so, end the game and
   # returnTrue. Otherwise, erase the window, move the dots and
   # draw the dots return False.
   # - surface is the pygame.Surface object for the window
   eraseColor=pygame.Color('Black')
   surface.fill(eraseColor)
   moveDot(surface,center1,radius1,speed1,score,position1,position2)
   pygame.draw.circle(surface,color1,center1,radius1,0)
   r1=pygame.draw.rect(surface, color1, rect1)
   r2=pygame.draw.rect(surface, color1, rect2)
   if r1.collidepoint(center1) and speed1[0]<0:
      speed1[0]=-speed1[0]
   if r2.collidepoint(center1) and speed1[0]>0:
      speed1[0]=-speed1[0]




def moveDot(surface,center,radius,speed,score,position1,position2):
   #Moves the ball by changing the center of the ball by its speed
   #If dots hits left edge, top edge, right edge or bottom edge
   #of the window, the then the ball bounces
   size=surface.get_size()

   for coord in range(0,2):
      center[coord]=center[coord]+speed[coord]
      if center[coord]<radius:
         speed[coord]=-speed[coord]
      if center[coord]+radius>size[coord]:
         speed[coord]=-speed[coord]
   if center[0]<radius:
      score[0]=score[0]+1
   drawScore(center,surface,score,position2,0)
   if center[0]+radius>size[0]:
      score[1]=score[1]+1
   drawScore(center,surface,score,position1,1)


def drawScore(center1,surface,score,position,whichscore):
   FontSize=30
   FontColor=pygame.Color('White')
   String='Score : '
   font=pygame.font.SysFont(None, FontSize, True)
   surface1=font.render(String+str(score[whichscore]), True, FontColor,0)
   surface.blit(surface1,position)



main()

Answer 1

您始終使用rects rect1和rect2繪制槳。 但是，要更新其位置，請嘗試更改列表location1和location2 。

停下來。 只需改變直腸。 最簡單的方法是使用move_ip更改rects。

另外，如果您想在玩家按住移動鍵的同時保持槳葉運動，請使用pygame.key.get_pressed獲取所有已按下鍵的列表（因為按下一個鍵只會生成一個KEYDOWN事件，除非您與pygame.key.set_repeat ，您不應該這樣做）。

因此，您的代碼應如下所示：

...
while True:
    # Handle events
    for event in pygame.event.get():
       if event.type == QUIT:
          pygame.quit()
          sys.exit()

    pressed = pygame.key.get_pressed()
    if pressed[pygame.K_q]: rect1.move_ip(0, -1)
    if pressed[pygame.K_a]: rect1.move_ip(0,  1)
    if pressed[pygame.K_p]: rect2.move_ip(0, -1)
    if pressed[pygame.K_i]: rect2.move_ip(0,  1)

    gameOver = ...
    ...