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pong.py
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pong.py
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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Modules
import sys,pygame
# Constantes
WIDTH = 640
HEIGHT = 480
# Classess
# ----------------------------------------------------------------------
class Bola(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = load_image("images/ball.png", True)
self.rect = self.image.get_rect()
self.rect.centerx = WIDTH / 2
self.rect.centery = HEIGHT / 2
self.speed = [0.5 , -0.5]
def actualizar(self, time, pala_jug, pala_cpu, puntos):
self.rect.centerx += self.speed[0] * time
self.rect.centery += self.speed[1] * time
if self.rect.left <= 0:
puntos[1] += 1
if self.rect.right >= WIDTH:
puntos[0] += 1
if self.rect.left <= 0 or self.rect.right >= WIDTH:
self.speed[0] = -self.speed[0]
self.rect.centerx += self.speed[0] * time
if self.rect.top <= 0 or self.rect.bottom >= HEIGHT:
self.speed[1] = -self.speed[1]
self.rect.centery += self.speed[1] * time
if pygame.sprite.collide_rect(self, pala_jug):
self.speed[0] = -self.speed[0]
self.rect.centerx += self.speed[0] * time
if pygame.sprite.collide_rect(self, pala_cpu):
self.speed[0] = -self.speed[0]
self.rect.centerx += self.speed[0] * time
class Pala(pygame.sprite.Sprite):
def __init__ (self, x):
pygame.sprite.Sprite.__init__(self)
self.image = load_image("images/pala.png")
self.rect = self.image.get_rect()
self.rect.centerx = x
self.rect.centery = HEIGHT / 2
self.speed = 0.5
def mover(self, time, keys):
if self.rect.top >= 0:
if keys[pygame.K_UP]:
self.rect.centery -= self.speed * time
if self.rect.bottom <= HEIGHT:
if keys[pygame.K_DOWN]:
self.rect.centery += self.speed * time
def ia(self, time, ball):
if ball.speed[0] >= 0 and ball.rect.centerx >= WIDTH / 2:
if self.rect.centery < ball.rect.centery:
self.rect.centery += self.speed * time
if self.rect.centery > ball.rect.centery:
self.rect.centery -= self.speed * time
# ----------------------------------------------------------------------
# Funciones
# ----------------------------------------------------------------------
def load_image(filename, transparent = False):
try: image = pygame.image.load(filename)
except pygame.error, message:
raise SystemExit, message
image = image.convert()
if transparent:
color = image.get_at((0,0))
image.set_colorkey(color, pygame.RLEACCEL)
return image
def texto(texto, posx, posy, color = (255,255,255)):
fuente = pygame.font.Font("images/DroidSans.ttf", 25)
salida = pygame.font.Font.render(fuente, texto, 1, color)
salida_rect = salida.get_rect()
salida_rect.centerx = posx
salida_rect.centery = posy
return salida,salida_rect
def show_start_screen(screen, pala_jug, pala_cpu, background_image, puntos):
p_jug, p_jug_rect = texto(str(puntos[0]), WIDTH / 4, 40)
p_cpu, p_cpu_rect = texto(str(puntos[1]), WIDTH - WIDTH / 4, 40)
screen.blit(background_image, (0,0))
screen.blit(p_jug, p_jug_rect)
screen.blit(p_cpu, p_cpu_rect)
screen.blit(pala_jug.image, pala_jug.rect)
screen.blit(pala_cpu.image, pala_cpu.rect)
Start_text, Start_text_rect = texto('PyPong', WIDTH / 2, HEIGHT / 2, )
screen.blit(Start_text, Start_text_rect)
Continue_text, Continue_text_rect = texto("Press any key to continue", WIDTH / 2, Start_text_rect.centery + 30)
screen.blit(Continue_text, Continue_text_rect)
pygame.display.flip()
def show_game_screen(screen, bola, pala_jug, pala_cpu, background_image, puntos):
p_jug, p_jug_rect = texto(str(puntos[0]), WIDTH / 4, 40)
p_cpu, p_cpu_rect = texto(str(puntos[1]), WIDTH - WIDTH / 4, 40)
screen.blit(background_image, (0,0))
screen.blit(p_jug, p_jug_rect)
screen.blit(p_cpu, p_cpu_rect)
screen.blit(bola.image, bola.rect)
screen.blit(pala_jug.image, pala_jug.rect)
screen.blit(pala_cpu.image, pala_cpu.rect)
pygame.display.flip()
# ----------------------------------------------------------------------
def main():
screen = pygame.display.set_mode((WIDTH,HEIGHT))
pygame.display.set_caption("Pruebas Pygame")
background_image = load_image("images/fondo_pong.png")
bola = Bola()
pala_jug = Pala(30)
pala_cpu = Pala(WIDTH - 30)
puntos = [0, 0]
clock = pygame.time.Clock()
start = False
while not start:
show_start_screen(screen, pala_jug, pala_cpu, background_image, puntos)
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
start = True
# This call comes here in order to initialize the clock
time = clock.tick(60)
while True:
time = clock.tick(60)
keys = pygame.key.get_pressed()
for eventos in pygame.event.get():
if eventos.type == pygame.QUIT:
sys.exit(0)
bola.actualizar(time, pala_jug, pala_cpu, puntos)
pala_jug.mover(time,keys)
pala_cpu.ia(time, bola)
show_game_screen(screen, bola, pala_jug, pala_cpu, background_image, puntos)
return 0
if __name__ == '__main__':
pygame.init()
main()