rpg skeleton classes 3.py

import pygame, sys
from pygame.locals import *


winwidth = 800
winheight = 800
wallwidth = winwidth * .4
wallheight = winheight * .4

gameDisplay = pygame.display.set_mode((winwidth, winheight))
pygame.display.set_caption('Fuck')
clock = pygame.time.Clock()

black = (0, 0, 0)
green = (0, 255, 0)
grey =  (119, 136, 153)


class Player(pygame.sprite.Sprite):
    def __init__(self, x, y, w, h):
        pygame.sprite.Sprite.__init__(self)

        self.xchange = 0
        self.ychange = 0

        self.display = gameDisplay
        self.color = green
        self.x = x
        self.y = y
        self.w = w
        self.h = h


        self.image = pygame.Surface([self.w, self.h])
        self.rect = self.image.get_rect()

    def draw(self):
        self.x += self.xchange
        self.y += self.ychange

        self.player_sprite = pygame.draw.rect(gameDisplay, green, (self.x, self.y, self.w, self.h))

class Wall(pygame.sprite.Sprite):
    def __init__(self, x, y, w, h):
        pygame.sprite.Sprite.__init__(self)

        self.display = gameDisplay
        self.color = grey
        self.x = x
        self.y = y
        self.w = w
        self.h = h

        self.image = pygame.Surface([self.w, self.h])
        self.rect = self.image.get_rect()

    def draw(self):
        self.wall_sprite = pygame.draw.rect(display, color, (self.x, self.y, self.w, self.h))



link = Player(350, 350, 50, 50)
wall1 = Wall(0, 0, 320, 320)
wall2 = Wall(480, 0, 320, 320)
wall3 = Wall(0, 480, 320, 320)
wall4 = Wall(480, 480, 320, 320)
        
Players = pygame.sprite.Group()
Walls = pygame.sprite.Group()

Players.add(link)
Walls.add(wall1)
Walls.add(wall2)
Walls.add(wall3)
Walls.add(wall4)

pygame.init()


def main():
    run = True
    while run:
        
        gameDisplay.fill(black)
        for event in pygame.event.get():
            if event.type == KEYDOWN:
                if event.key == K_k:
                    pygame.quit()
                    sys.exit()
                    """
                if event.key == K_UP or event.key == K_w:
                    link.ychange = -5
                if event.key == K_DOWN or event.key == K_s:
                    link.ychange = 5
                if event.key == K_LEFT or event.key == K_a:
                    link.xchange = -5
                if event.key == K_RIGHT or event.key == K_d:
                    link.xchange = 5
            
            if event.type == KEYUP:
                if event.key == K_UP or event.key == K_w:
                    link.ychange = 0
                if event.key == K_DOWN or event.key == K_s:
                    link.ychange = 0
                if event.key == K_LEFT or event.key == K_a:
                    link.xchange = 0
                if event.key == K_RIGHT or event.key == K_d:
                    link.xchange = 0
                    """



        # link.draw()
        # wall1.draw()
        # wall2.draw()
        # wall3.draw()
        # wall4.draw()

        #wall1.kill()

        Players.update()
        Walls.update()

        hitWalls = pygame.sprite.spritecollide(link, Walls, False)

        #for wall in Walls.sprites():
            #print wall.rect

        for collision in hitWalls:
            print collision.rect

        pygame.display.update()

        clock.tick(60)

main()