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mazegen.py
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mazegen.py
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#!/usr/bin/env python3
import pygame as pg
import numpy as np
import re
'''
A Cellular Automata using Maze ruleset, using NumPy, and with RLE support!
Copyright (c) 2021 Nikolaus Stromberg nikorasu85@gmail.com
'''
PATFILE = 'patterns/lidka.rle'
SHOWGEN = True # show generation count
MAPSIZE = 2000 # size of available simulation space
COLOR = False # start with color mode, or black and white
PRATIO = 5 # starting size of individual cells
WIDTH = 1200 # window width, default 1200
HEIGHT = 800 # window height, default 800
FLLSCRN = False # True for fullscreen, False for window
FPS = 60 # overall target framerate/limit
VSYNC = True # limit frame rate to refresh rate
SHOWFPS = True # show framerate debug
class LifeGrid():
def __init__(self, maxSize, pattern):
self.size = maxSize
self.grid = np.zeros(self.size, np.int16)
cen_x = (self.size[0]//2) - (pattern.shape[0]//2)
cen_y = (self.size[1]//2) - (pattern.shape[1]//2)
self.grid[cen_x:cen_x+pattern.shape[0], cen_y:cen_y+pattern.shape[1]] = pattern
self.neighbors = np.copy(self.grid)
def runLife(self):
self.neighbors[:] = 0
for dx in [-1, 0, 1]:
for dy in [-1, 0, 1]:
if (dx, dy) != (0, 0):
shifted = np.roll(self.grid, (dx, dy), (0, 1))
np.add(self.neighbors, shifted, out=self.neighbors)
alive = self.grid > 0
one = self.neighbors == 1
two = self.neighbors == 2
three = self.neighbors == 3
four = self.neighbors == 4
five = self.neighbors == 5
self.grid[:] = 0 # zero out the current grid
# lots of unnecessary copying here, but it's so elegant - Ghast's wizardry
self.grid[(alive & (one | two | three | four | five)) | ((~alive) & three)] = 1
#self.grid[(alive & (one | two | three | four)) | ((~alive) & three)] = 1 # Mazectric
def poke(self, pos, cSize, off_x, off_y, status):
spot = ((pos[0]-2)//cSize)+off_x, ((pos[1]-4)//cSize)+off_y # edge rounding weird
if spot[0]==self.size[0] : spot = 0,spot[1]
if spot[1]==self.size[1] : spot = spot[0],0
self.grid[spot] = status
self.neighbors[spot] = status
def readRLE(contents):
data = ''
dline = len(contents)
for num, line in enumerate(contents):
if line.startswith('x'):
x,y = [int(s) for s in re.findall(r'\d+',line)][:2]
dline = num+1
if num >= dline : data += line
pattern = np.zeros((x,y), np.int16)
splitdata = [s for s in re.split("([0-9]*[^0-9])", data) if s != ""]
cx, cy = 0, 0
for sd in splitdata:
if sd[0].isdigit():
for c in range(int(sd[:-1])):
if sd[-1] == 'b' : pattern[cx+c,cy] = 0
elif sd[-1] == 'o' : pattern[cx+c,cy] = 1
elif sd[-1] == '$':
cy += 1
cx = 0
if sd[-1] == 'b' or sd[-1] == 'o' : cx += int(sd[:-1])
elif sd == '!': return pattern
elif sd == '$':
cy += 1
cx = 0
elif sd == 'b':
pattern[cx,cy] = 0
cx += 1
elif sd == 'o':
pattern[cx,cy] = 1
cx += 1
def main():
pg.init() # prepare window
pg.display.set_caption("Life")
# setup fullscreen or window mode
nativeRez = (pg.display.Info().current_w, pg.display.Info().current_h)
if FLLSCRN : screen = pg.display.set_mode(nativeRez, pg.SCALED | pg.NOFRAME | pg.FULLSCREEN, vsync=VSYNC)
else: screen = pg.display.set_mode((WIDTH, HEIGHT), pg.SCALED, vsync=VSYNC)
simFrame = 1 # starting speed
cSize = PRATIO
colorTog = COLOR
full_w, full_h = MAPSIZE, MAPSIZE
win_w, win_h = screen.get_size()
zoomed_w, zoomed_h = win_w//cSize, win_h//cSize
centerx, centery = zoomed_w//2, zoomed_h//2
adjust_x, adjust_y = (full_w//2)-centerx, (full_h//2)-centery
try:
with open(PATFILE) as file : contents = file.read().splitlines()
pattern = readRLE(contents)
except:
pattern = np.array([[0, 1, 1], [1, 1, 0], [0, 1, 0]]) # R-pentomino
life = LifeGrid((full_w,full_h), pattern)
colors = np.array([0, 0x999999, 0x008000, 0x0000FF, 0xFFFF00, 0xFFA500, 0xFF4500, 0xFF0000, 0xFF00FF])
toggler = False
genCount, updateDelayer = 0, 0
clock = pg.time.Clock()
font = pg.font.Font(None, 30) # if SHOWFPS:
# main loop
while True:
clock.tick(FPS)
for e in pg.event.get():
if e.type == pg.QUIT : return
elif e.type == pg.MOUSEBUTTONDOWN:
mousepos = pg.mouse.get_pos()
if e.button == 1 : life.poke(mousepos, cSize, adjust_x, adjust_y, 1)
elif e.button == 3 : life.poke(mousepos, cSize, adjust_x, adjust_y, 0)
elif e.type == pg.KEYDOWN:
if e.key == pg.K_q or e.key == pg.K_ESCAPE : return
elif e.key==pg.K_SPACE or e.key==pg.K_KP_ENTER or e.key==pg.K_RETURN : toggler = ~toggler
elif e.key == pg.K_KP1 or e.key == pg.K_1 : simFrame = 1
elif e.key == pg.K_KP2 or e.key == pg.K_2 : simFrame = 3
elif e.key == pg.K_KP3 or e.key == pg.K_3 : simFrame = 5
elif e.key == pg.K_KP4 or e.key == pg.K_4 : simFrame = 8
elif e.key == pg.K_KP5 or e.key == pg.K_5 : simFrame = 11
elif e.key == pg.K_KP6 or e.key == pg.K_6 : simFrame = 15
elif e.key == pg.K_KP7 or e.key == pg.K_7 : simFrame = 20
elif e.key == pg.K_KP8 or e.key == pg.K_8 : simFrame = 28
elif e.key == pg.K_KP9 or e.key == pg.K_9 : simFrame = 42
elif e.key == pg.K_KP0 or e.key == pg.K_0 or e.key == pg.K_c : colorTog = ~colorTog
elif (e.key == pg.K_w or e.key == pg.K_i or e.key == pg.K_UP) and adjust_y > 0:
adjust_y -= zoomed_h//5
if adjust_y < 0 : adjust_y = 0
elif (e.key == pg.K_s or e.key == pg.K_k or e.key == pg.K_DOWN) and adjust_y < full_h:
adjust_y += zoomed_h//5
if adjust_y+zoomed_h > full_h: adjust_y = full_h-zoomed_h
elif (e.key == pg.K_a or e.key == pg.K_j or e.key == pg.K_LEFT) and adjust_x > 0:
adjust_x -= zoomed_w//5
if adjust_x < 0 : adjust_x = 0
elif (e.key == pg.K_d or e.key == pg.K_l or e.key == pg.K_RIGHT) and adjust_x < full_w:
adjust_x += zoomed_w//5
if adjust_x+zoomed_w > full_w: adjust_x = full_w-zoomed_w
elif (e.key == pg.K_MINUS or e.key == pg.K_KP_MINUS) and cSize > 1:
old_cx, old_cy = centerx, centery
cSize -= 1
zoomed_w, zoomed_h = win_w//cSize, win_h//cSize
centerx, centery = zoomed_w//2, zoomed_h//2
adjust_x += (old_cx - centerx)
adjust_y += (old_cy - centery)
if adjust_x+zoomed_w > full_w : adjust_x -= (adjust_x + zoomed_w) - full_w
elif adjust_x < 0 : adjust_x = 0
if adjust_y+zoomed_h > full_h : adjust_y -= (adjust_y + zoomed_h) - full_h
elif adjust_y < 0 : adjust_y = 0
elif (e.key == pg.K_EQUALS or e.key == pg.K_KP_PLUS) and cSize < 12:
old_cx, old_cy = centerx, centery
cSize += 1
zoomed_w, zoomed_h = win_w//cSize, win_h//cSize
centerx, centery = zoomed_w//2, zoomed_h//2
adjust_x += (old_cx - centerx)
adjust_y += (old_cy - centery)
if toggler : updateDelayer += 1
if updateDelayer>=simFrame:
genCount, updateDelayer = genCount+1, 0
life.runLife()
zoomed_w, zoomed_h = win_w//cSize, win_h//cSize
outimg = pg.Surface((zoomed_w, zoomed_h)).convert()
if colorTog:
color_grid = colors[life.neighbors] * life.grid
pg.surfarray.blit_array(outimg, color_grid[adjust_x:adjust_x+zoomed_w, adjust_y:adjust_y+zoomed_h])
else: # 16777215 0xFFFFFF
pg.surfarray.blit_array(outimg,life.grid[adjust_x:adjust_x+zoomed_w,adjust_y:adjust_y+zoomed_h]*16777215)
rescaled_img = pg.transform.scale(outimg, (win_w, win_h))
screen.fill(0)
screen.blit(rescaled_img, (0,0))
if SHOWGEN:
gentxt = font.render(str(genCount), True, [100,100,100])
gentxt_rect = gentxt.get_rect(center=(win_w/2, 20))
screen.blit(gentxt, gentxt_rect)
# displays the fps in the upper left corner, for debugging
if SHOWFPS : screen.blit(font.render(str(int(clock.get_fps())), True, [0,200,0]), (8, 8))
pg.display.update()
if __name__ == '__main__':
main() # by Nik
pg.quit()