#import required libraries 
import random, os
import pygame
#place pygame module in global namespace
from pygame import *

class Explosion(pygame.sprite.Sprite):
    """The Explosion Used When Blowing Up a Missle"""
    image = None    #Again there will be multiple explosions so we only want to load image once
    def __init__(self, position):
            pygame.sprite.Sprite.__init__(self) #call Sprite initalizer
            if Explosion.image is None:     #first explosion
                Explosion.image, self.rect = load_image('Explosion.png', (255, 255, 255, 0))    #Then load image
            self.image = Explosion.image        #Set the image to gloabal image
            self.rect = self.image.get_rect()   #Get the rectangle of the image
            self.rect.center = position     #Set postion to given position
            self.life = 20  #Life span of how long explosion stays
            self.rotation = 0
            self.scale = 0.97
            self.center = self.rect.center

    def update(self):   #Keeps explosion alive for so long
        if self.life == 0:  # if its time to die
            pass            #TODO: Kill explosion
        else:
            #self.life -= 1     #Minus one from its life
            self.image = Explosion.image
            self.rotation += 1
            self.scale = 1./self.scale
            #self.image = transform.rotozoom(self.image, self.rotation, 1)
            #self.rect.center = self.center
            
            
            pass            #Remove when it will dissapear

#Function Used To Load an Image File
def load_image(file_name, colorkey=None):
    #Grab the directory
    full_name = os.path.join('data', file_name)
    
    #try to load it
    try:
        image = pygame.image.load(full_name)
    except pygame.error, message:
        print 'Cannot load image:', full_name
        raise SystemExit, message
    #Should Convert But Causes Trouble With Alphas
    #image = image.convert()
   # Set the color key
    if colorkey is not None:
        if colorkey is -1:
            colorkey = image.get_at((0,0))
            print colorkey
        image.set_colorkey(colorkey, RLEACCEL)
    #Return the image, and the images rectangle
    return image, image.get_rect()

def main():

    pygame.init()
    screen = pygame.display.set_mode((width,height))
    pygame.display.set_caption('Meteor Shower by Corey Ling')
    #pygame.mouse.set_visible(False)   //Possible Use Later
    running = 1
    
    missleexplosion_sprite = pygame.sprite.RenderClear()    #Explosion Group
    missleexplosion_sprite.add(Explosion((100,100))  #Create the explosion
    while running == 1:
	missleexplosion_sprite.update()
	missleexplosion_sprite.clear(screen,surface.fill(0,0,0))
	missleexplosion_sprite.draw(screen)
    return

if __name__ == '__main__': main()