import pygame
import random
pygame.init
def colorshift(color,rate):
    color+=random.randint(-rate,rate)
    if color>=256: color=255
    if color<=-1:  color=0
    return color
def imagegen(images, steps, width, height, startcolor, color2, watch):  #color2: end color for fade:           [0,red,green,blue]
    for image in range(images):                                         #        color speed for random shift: [1,speed]
        random.seed()
        if steps==0: steps=width*height
        x,y=width/2,height/2
        size=width,height
        if width==1280 and height==1024 and watch==True:
            surfer=pygame.display.set_mode(size,pygame.FULLSCREEN)
        elif watch==True:
            surfer=pygame.display.set_mode(size)
        else:
            surfer=pygame.Surface((width,height))
        surfer.fill((0,128,0))
        if watch==True: pygame.display.flip()
        red,blue,green=startcolor[0],startcolor[1],startcolor[2]
        for step in range(steps):
            if color2[0]==0:
                red=startcolor[0]+((color2[1]-startcolor[0])*step/steps)
                green=startcolor[1]+((color2[2]-startcolor[1])*step/steps)
                blue=startcolor[2]+((color2[3]-startcolor[2])*step/steps)
            if color2[0]==1:
                red,green,blue=colorshift(red,color2[1]),colorshift(green,color2[1]),colorshift(blue,color2[1])
            tangle=pygame.Rect(x,y,1,1)
            surfer.set_at((x,y),(red,green,blue))
            if watch==True: pygame.display.update(tangle)
            x,y=random.randint(x-1,x+1),random.randint(y-1,y+1)
            if x==width:    x=0
            if x==-1:       x=width-1
            if y==height:   y=0
            if y==-1:       y=height-1
        #if watch==False:
        pygame.image.save(surfer, "Images\\landsea_"+str(image)+".bmp")
        pygame.display.quit()
imagegen(1,0,1280,1024,[0,0,255],[0,0,0,255],False)