pygame游戏之旅 按钮上添加文字的方法

本文为大家分享了pygame游戏之旅的第11篇，供大家参考，具体内容如下

定义一个button函数，将文字，颜色等作为参数。

def button (msg, x, y, w, h, ic, ac):
 mouse =pygame.mouse.get_pos()
 if x + w > mouse[0] > x and y + h > mouse[1] > y:
  pygame.draw.rect(gamedisplay, ac, (x,y,w,h))
 else:
  pygame.draw.rect(gamedisplay, ic, (x,y,w,h))
 smalltext = pygame.font.font("freesansbold.ttf", 20)
 textsurf, textrect = text_objects(msg, smalltext)
 textrect.center = ( (x+(w/2)), (y+(h/2)))
 gamedisplay.blit(textsurf, textrect)

全部代码为：

import pygame
import time
import random
 
pygame.init()
 
white = (255,255,255)
black = (0,0,0)
gray = (128,128,128)
red = (200,0,0)
green = (0,200,0)
bright_red = (255,0,0)
bright_green = (0,255,0)
blue = (0,0,255)
 
 
car_width = 100
 
display_width = 800
display_height = 600
 
 
gamedisplay = pygame.display.set_mode( (display_width,display_height) )
pygame.display.set_caption('a bit racey')
clock = pygame.time.clock()
 
carimg = pygame.image.load('car.png')
 
def things_dodged(count):
 font = pygame.font.sysfont(none, 25)
 text = font.render("dodged:"+str(count), true, black)
 gamedisplay.blit(text,(0,0))
 
def things(thingx, thingy, thingw, thingh, color):
 pygame.draw.rect(gamedisplay, color, [thingx, thingy, thingw, thingh])
 
 
 
def car(x, y):
 gamedisplay.blit(carimg, (x,y))
 
 
def text_objects(text, font):
 textsurface = font.render(text, true, black)
 return textsurface, textsurface.get_rect()
 
def message_diaplay(text):
 largetext = pygame.font.font('freesansbold.ttf',115)
 textsurf, textrect = text_objects(text, largetext)
 textrect.center = ((display_width/2),(display_height/2))
 gamedisplay.blit(textsurf, textrect)
 pygame.display.update()
 time.sleep(2)
 game_loop()
 
def crash():
 message_diaplay('you crashed')
 
def button (msg, x, y, w, h, ic, ac):
  mouse =pygame.mouse.get_pos()
  if x + w > mouse[0] > x and y + h > mouse[1] > y:
   pygame.draw.rect(gamedisplay, ac, (x,y,w,h))
  else:
   pygame.draw.rect(gamedisplay, ic, (x,y,w,h))
  smalltext = pygame.font.font("freesansbold.ttf", 20)
  textsurf, textrect = text_objects(msg, smalltext)
  textrect.center = ( (x+(w/2)), (y+(h/2)))
  gamedisplay.blit(textsurf, textrect)
 
def game_intro():
 intro = true
 while intro:
  for event in pygame.event.get():
   print(event)
   if event.type == pygame.quit:
    pygame.quit()
    quit()
  gamedisplay.fill(white)
  largetext = pygame.font.font('freesansbold.ttf',115)
  textsurf, textrect = text_objects('a bit racey', largetext)
  textrect.center = ((display_width/2),(display_height/2))
  gamedisplay.blit(textsurf, textrect)
  button("go", 150, 450, 100, 50, green, bright_green)
  button("quit",550, 450, 100, 50, red, bright_red)
  pygame.display.update()
  clock.tick(15)
 
def game_loop():
 x = display_width * 0.45
 y = display_height * 0.8
 x_change = 0
 
 dodged = 0
 
 gameexit = false
 
 thing_startx = random.randrange(0, display_width)
 thing_starty = -600
 thing_speed = 7
 thing_width = 100
 thing_height = 100
 
 while not gameexit:
  for event in pygame.event.get():
   if event.type == pygame.quit:
    pygame.quit()
    quit()
   if event.type == pygame.keydown:
    if event.key == pygame.k_left:
     x_change = -5
    elif event.key == pygame.k_right:
     x_change = 5
   if event.type == pygame.keyup:
    if event.key == pygame.k_left or event.key == pygame.k_right:
     x_change = 0
   print(event)
  x += x_change
  gamedisplay.fill(white)
 
  things(thing_startx, thing_starty, thing_width, thing_height, black)
  thing_starty += thing_speed
  
  car(x,y)
  things_dodged(dodged)
  if x > display_width - car_width or x < 0:
   gameexit = true
  if thing_starty > display_height:
   thing_starty = 0 - thing_height
   thing_startx = random.randrange(0, display_width)
   dodged += 1
   thing_speed += 1
   thing_width += (dodged * 1.2)
  if y < thing_starty + thing_height:
   print('y crossover')
   if x > thing_startx and x < thing_startx + thing_width or x + car_width > thing_startx and x + car_width < thing_startx + thing_width:
    print('x crossover')
    crash()
  pygame.display.update()
  clock.tick(60)
#crash()
game_intro()
game_loop()
pygame.quit()
quit()

结果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。