我正在尝试使用python和pygame创建我自己的brick breaker版本，我发现我的计算机每次运行主循环时都会努力绘制构成该级别的每个砖块。我需要知道如何绘制它们并保持它们被绘制，直到我真的需要更新它们。
import pygame
from random import randint
pygame.init()
pygame.mouse.set_visible(True)
#Time
FPS = 60
clock = pygame.time.Clock()
#Colors
black = (0, 0, 0)
grey = (127, 127, 127)
white = (255, 255, 255)
#Display
displayInfo = pygame.display.Info()
displayWidth = displayInfo.current_w - 200
displayHeight = displayInfo.current_h - 100
borderB = 10
borderS = 1
gameDisplay = pygame.display.set_mode((displayWidth, displayHeight)) #,pygame.FULLSCREEN)
pygame.display.set_caption("Brick Breaker")
gameDisplay.fill(white)
pygame.display.update()
#Blocks
blocks = []
blockSize = 20
blockCount = 20
speed = int(blockSize / 2)
"""Classes"""
#Player
class Player():
def __init__(self):
#Size
self.width = blockSize * 5
self.height = blockSize
#Pos
self.x = displayWidth / 2 - self.width / 2
self.y = displayHeight - borderB - self.height
def move(self):
mousePos = pygame.mouse.get_pos()
#Check border left
if not mousePos[0] >= borderS:
mousePos = (borderS, mousePos[1])
#Check border right
elif not mousePos[0] + self.width <= displayWidth - borderS:
mousePos = (displayWidth - borderS - self.width, mousePos[1])
self.x = mousePos[0]
class Block():
def __init__(self, x = 0, y = 0):
#Size
self.width = blockSize * 2
self.height = blockSize
#Position
self.x = x
self.y = y
def giveDetails(self):
print(self.x, self.y, self.width, self.height)
class Ball():
def __init__(self):
self.radius = int(blockSize / 2)
self.width = blockSize
#Co-ordinates
self.x = int(playerBoard.x + playerBoard.width / 2)
self.y = int(playerBoard.y - self.radius)
self.yChange = - speed
self.xChange = 10
def move(self):
if self.x - self.radius + borderS <= 0 or self.x + self.radius >= displayWidth - borderS:
self.xChange *= -1
if self.y - self.radius <= 0 or self.y + self.radius >= displayHeight - borderB:
self.yChange *= -1
self.x += self.xChange
self.y += self.yChange
"""Functions"""
def create_level():
global blocks
blocks = []
xPos = blockSize
yPos = blockSize
#Down, across
accross = int((displayWidth - blockSize * 2 - borderS * 2) / (blockSize * 2 + 2))
levelData = [1, accross]
for row in range(levelData[0]):
yPos += blockSize + 1
xPos = blockSize
for num in range(levelData[1]):
xPos += blockSize * 2 + 1
_ = Block(xPos, yPos)
_.name = "block" + str(num)
blocks.append(_)
def main_loop():
global playerBoard, ball
gameExit = False
pygame.mouse.set_visible(False)
playerBoard = Player()
ball = Ball()
#This creates a list called 'blocks' with all the block objects
create_level()
while not gameExit:
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
break
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
menu()
gameExit = True
break
if event.type == pygame.MOUSEMOTION:
playerBoard.move()
ball.move()
gameDisplay.fill(white) #Clear Screen
#Draw Player
pygame.draw.rect(gameDisplay, grey, (playerBoard.x, playerBoard.y,
playerBoard.width, playerBoard.height))
"""Draw Blocks, this is where the main problem is as it runs this loop 100
times or so as there are about 100 blocks. This obviously means that the
display.update has a hard time."""
for item in blocks:
pygame.draw.rect(gameDisplay, black, (item.x, item.y, item.width, item.height))
#Draw ball
pygame.draw.circle(gameDisplay, black, (ball.x, ball.y), ball.radius)
pygame.display.update()
clock.tick(FPS)
main_loop()
pygame.quit()
quit()