import pygame
import sys
from pygame.locals import *

pygame.init()

screen = pygame.display.set_mode((700,700)) #Window Size
screen.fill((100,100,0))
pygame.display.update()
background = pygame.image.load("space.gif") # Background

class Character(pygame.sprite.Sprite):
    def __init__(self,position):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('Tanks.png')
        self.rect = self.image.get_rect()
        self.right = False
        self.left = False
        self.mass = 60 #kg
        self.velocity = 0
        self.rect.topleft = position
        self.lives = 3

    def update(self):
        if self.right:
            self.velocity += .02
        elif self.velocity > 0:
            self.velocity -= .01
        if self.left:
            self.velocity -= .02
        elif self.velocity < 0:
            self.velocity += .01
        if self.velocity > 2:
            self.velocity = 2
        if self.velocity < -2:
            self.velocity = -2
        self.rect.right += self.velocity
        if self.rect.right >= 700:
            self.rect.right = 700
        if self.rect.left <= 0:
            self.rect.left = 0


class Platform(pygame.sprite.Sprite):
    def __init__(self,position):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('platform.png')
        self.rect = self.image.get_rect()
        self.topleft = position

def player_input():
    for event in pygame.event.get():
        if event.type == QUIT or event.type == KEYDOWN and event.key == K_ESCAPE:
            pygame.quit()
        if event.type == KEYDOWN and event.key == K_a:
            character.left=True
        if event.type == KEYDOWN and event.key == K_d:
            character.right=True
        if event.type == KEYUP and event.key == K_a:
            character.left=False
        if event.type == KEYUP and event.key == K_d:
            character.right=False
        if event.type == MOUSEBUTTONDOWN and event.button == 1: #left
            print 'check'
        if event.type == MOUSEBUTTONDOWN and event.button == 3: #right
            print 'rcheck'

screen.blit(background, (0,0))
pygame.display.update()
character = Character((450,450))
platform = Platform((500,500))
screen.blit(platform.image, platform.rect.topleft)
pygame.display.update()

while True:
    screen.blit(background, (0,0))
    player_input()
    character.update()
    screen.blit(character.image, character.rect.topleft)
    pygame.display.update()