This is an example of using Python and Pygame. You can move a square box with the keyboard and bump into wall objects.
import pygame
from pygame.locals import *
black = (0,0,0)
white = (255,255,255)
blue = (0,0,255)
# This class represents the bar at the bottom that the player controls
class Wall(pygame.sprite.Sprite):
# Constructor function
def __init__(self,height,width,x,y):
# Call the parent's constructor
pygame.sprite.Sprite.__init__(self)
# Make a blue wall, of the size specified in the parameters
self.image = pygame.Surface([width, height])
self.image.fill((blue))
# Make our top-left corner the passed-in location.
self.rect = self.image.get_rect()
self.rect.topleft = (x, y)
# This class represents the bar at the bottom that the player controls
class Player(pygame.sprite.Sprite):
# Constructor function
def __init__(self,x,y):
# Call the parent's constructor
pygame.sprite.Sprite.__init__(self)
# Set speed vector
self.change_x=0
self.change_y=0
# Set height, width
self.image = pygame.Surface([15, 15])
self.image.fill((white))
# Make our top-left corner the passed-in location.
self.rect = self.image.get_rect()
self.rect.topleft = [x,y]
# Change the speed of the player
def changespeed(self,x,y):
self.change_x+=x
self.change_y+=y
# Find a new position for the player
def update(self,walls):
# Get the old position, in case we need to go back to it
old_x=self.rect.topleft[0]
old_y=self.rect.topleft[1]
# Update position according to our speed (vector)
new_x=old_x+self.change_x
new_y=old_y+self.change_y
# Put the player in the new spot
self.rect.topleft = (new_x,new_y)
# Did this update cause us to hit a wall?
collide = pygame.sprite.spritecollide(self, walls, False)
if collide:
# Whoops, hit a wall. Go back to the old position
self.rect.topleft=(old_x,old_y)
# This is the main function where our program begins
def main():
score = 0
# Call this function so the Pygame library can initialize itself
pygame.init()
# Create an 800x600 sized screen
screen = pygame.display.set_mode([800, 600])
# Set the title of the window
pygame.display.set_caption('Test')
# Enable this to make the mouse dissappear when over our window
#pygame.mouse.set_visible(0)
# This is a font we use to draw text on the screen (size 36)
font = pygame.font.Font(None, 36)
# Create a surface we can draw on
background = pygame.Surface(screen.get_size())
# Used for converting color maps and such
background = background.convert()
# Fill the screen with a black background
background.fill(black)
# Create the player paddle object
player = Player( 50,50 )
movingsprites = pygame.sprite.RenderPlain((player))
# Make the walls. (height, width, x_pos, y_pos)
wall_list=[]
wall_list.append(Wall(600,10,0,0))
wall_list.append(Wall(10,790,10,0))
wall_list.append(Wall(10,100,10,200))
walls=pygame.sprite.RenderPlain(wall_list)
clock = pygame.time.Clock()
while 1:
clock.tick(40)
for event in pygame.event.get():
if event.type == pygame.QUIT:
return
if event.type == KEYDOWN:
if event.key == K_LEFT:
player.changespeed(-3,0)
if event.key == K_RIGHT:
player.changespeed(3,0)
if event.key == K_UP:
player.changespeed(0,-3)
if event.key == K_DOWN:
player.changespeed(0,3)
if event.type == KEYUP:
if event.key == K_LEFT:
player.changespeed(3,0)
if event.key == K_RIGHT:
player.changespeed(-3,0)
if event.key == K_UP:
player.changespeed(0,3)
if event.key == K_DOWN:
player.changespeed(0,-3)
player.update(walls)
pygame.draw.rect(screen,black,(0,0,800,600))
movingsprites.draw(screen)
walls.draw(screen)
pygame.display.flip()
#this calls the 'main' function when this script is executed
main()
