blob.py

'''
Created on May 20, 2012

@author: Piotr Zakrzewski
'''
import collections
import pygame
import threading
import random

class Circle(object):
    def __init__(self,pos,radius,color):
        self.pos = pos
        self.radius = radius
        self.color = color
        
        self.children = list()
    def draw(self,surface):
        pygame.draw.circle(surface,self.color,self.pos,self.radius)
        
class FluctuatingCircle(Circle):
    signs = [1,-1]
    def __init__(self,pos,radius,color,fluctuation):
        Circle.__init__(self, pos, radius, color)
        self.fluctuation = fluctuation
        
    def update(self):
        self.fluctuate()
        
    def fluctuate(self):
        x,y = self.pos
        x = FluctuatingCircle.deviate(x,self.fluctuation)
        y = FluctuatingCircle.deviate(y,self.fluctuation)
        newPos = x,y
       # print(self.pos,newPos)
        self.pos = newPos
        
    @classmethod
    def deviate(cls,number,deviation):
        random_sign = random.choice(cls.signs)
        deviated = number +  (deviation* random_sign)
        
        return int(deviated)
   

render.py

import pygame
import random
import blob 

input_delay = 8000 # time gap between handling user input events (in miliseconds).
WINDOW_WIDTH = 512
WINDOW_HEIGHT = 512

def main():
    """
    This function is being executed when this file is run as a main module
    """
    init_game()
    game_main_loop()
    
    
def game_main_loop():
    clock = pygame.time.Clock()
    while True:
        clock.tick(input_delay)
        events = pygame.event.get()
        user_input(events)
        update_Blobs()
        pygame.display.update()
        
        
def update_Blobs():
    for blob in blobs:
        blob.update()   
        blob.draw(window)     
        
def init_game():
    global window
    pygame.init()
    window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
    


    
    
def _isLMB(event):
    if event.button == 1:
        return True
    else:
        return False
blobs = list()
def handleMouseClick(event):
    pos = event.pos
    radius = random.randint(10,100)
    color = _random_color()
    b = blob.FluctuatingCircle(pos,radius,color,1)
    blobs.append(b)


def _random_color():
    r = random.randint(0,255)
    g = random.randint(0,255)
    b = random.randint(0,255)
    return r,g,b


def user_input(events):
    for event in events:
        if event.type == pygame.QUIT:
            raise SystemExit
        if event.type == pygame.MOUSEBUTTONDOWN:
            handleMouseClick(event)


if __name__ == "__main__":
    main()