Actividades con PyGame

== Dibujando con un circulo ==

Archivo <code>juego.py</code>, para ejecutar con comando <code>python juego.py</code> en Terminal:

<code><pre>
#!/usr/bin/env python

import pygame
import sys

pygame.init()

modes = pygame.display.list_modes()

print modes

s = pygame.display.set_mode(modes[0], pygame.FULLSCREEN)

x = 100
y = 200

while True:
    for e in pygame.event.get():
        if e.type == pygame.QUIT:
            sys.exit(0)
        if e.type == pygame.KEYDOWN:
            if e.key == pygame.K_ESCAPE:
                sys.exit(0)

    if pygame.key.get_pressed()[pygame.K_RIGHT]:
        x = x + 1
    if pygame.key.get_pressed()[pygame.K_LEFT]:
        x = x - 1
    if pygame.key.get_pressed()[pygame.K_UP]:
        y = y - 1
    if pygame.key.get_pressed()[pygame.K_DOWN]:
        y = y + 1

    pygame.draw.circle(s, (255, 255, 0), (x, y), 50)

    pygame.display.update()
</pre></code>

== Una serpiente que mueve ==

<code><pre>
#!/usr/bin/env python

import pygame
import sys
import math

pygame.init()

modes = pygame.display.list_modes()

print modes

s = pygame.display.set_mode(modes[0], pygame.FULLSCREEN)

x = 100
y = 200
a = 0
worm = []

while True:
    for e in pygame.event.get():
        if e.type == pygame.QUIT:
            sys.exit(0)
        if e.type == pygame.KEYDOWN:
            if e.key == pygame.K_ESCAPE:
                sys.exit(0)

    if len(worm) > 100:
        pygame.draw.circle(s, (0, 0, 0), worm.pop(), 50)

    if pygame.key.get_pressed()[pygame.K_RIGHT]:
        a = a + 1
    if pygame.key.get_pressed()[pygame.K_LEFT]:
        a = a - 1

    x = x + math.cos(a/180.0*math.pi)
    y = y + math.sin(a/180.0*math.pi)
    
    pygame.draw.circle(s, (255, 255, 0), (x, y), 50)

    worm.insert(0, (x, y))

    pygame.display.update()
</pre></code>