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ConwayLife.py
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ConwayLife.py
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import tkinter.font as tkFont
from tkinter import *
import numpy as np
import time
#### Patterns ####
# ----- Blinker -----
blinkerPattern = np.zeros((3,3), dtype=bool)
blinkerPattern[1,:3] = True
# -------------------
# ---- Die Hard ----
dieHardPattern = np.zeros((8,3), dtype=bool)
dieHardPattern[0:2,1] = True
dieHardPattern[1,2] = dieHardPattern[6][0] = True
dieHardPattern[5:8,2] = True
# ------------------
# ----- Glider -----
gliderPattern = np.zeros((3,3), dtype=bool)
gliderPattern[0:3,2] = True
gliderPattern[1][0] = gliderPattern[2][1] = True
# ------------------
# --- I-Beam Pattern ---
iBeamPattern = np.zeros((3,12), dtype=bool)
ibs = [0, 3, 8, 11]
for i in ibs:
iBeamPattern[0:4, ibs] = True
iBeamPattern[1,1:3] = True
iBeamPattern[1,9:11] = True
iBeamPattern[0:4,5:7] = True
# ----------------------
# ------ Pulsar -------
pulsarPattern = np.zeros((13,13), dtype=bool)
ps = [0, 5, 7, 12]
for i in ps:
pulsarPattern[2:5, i] = pulsarPattern[8:11, i] = True
pulsarPattern[i, 2:5] = pulsarPattern[i, 8:11] = True
# ---------------------
# ----- Spaceship -----
spaceshipPattern = np.zeros((4,5), dtype=bool)
spaceshipPattern[0][0] = spaceshipPattern[0][3] = spaceshipPattern[2][0] = True
spaceshipPattern[3,1:5] = spaceshipPattern[1:3,4] = True
# ---------------------
##################
class Life():
def __init__ ( self, wHeight=400, wWidth=400, bWidth=15, pow2=4 ):
self.gridSize = 2**pow2
self.windowHeight = wHeight
self.windowWidth = wWidth
self.xpad = (wWidth - self.gridSize*bWidth)/2
self.ypad = (wHeight - self.gridSize*bWidth)/2
self.boxWidth = bWidth
# Simulation starts paused
self.running = False
# Duration between frame updates
self.speed = 100
# Flag for printing update_grid(..) time
self.ptime = False
self.ttime = 0.0
# Flag determining weather the frame should be drawn
self.uframe = False
if self.uframe:
self.ypad = wHeight / 10
# Stores references to cells drawn in the window
self.cells = [[None for _ in np.arange(self.gridSize)] for _ in np.arange(self.gridSize)]
# 2D Matrices holding the current state and the temporary next state
self.life = np.zeros((self.gridSize, self.gridSize), dtype=bool)
self.tlife = np.zeros_like(self.life)
# 2D Matrix denoting cells that need to be redrawn
self.ulife = np.ones_like(self.life)
self.tlife[:,:] = self.life[:,:]
self.setup_tkinter_window()
# Draw the game board
if self.uframe:
self.draw_frame()
self.draw_border()
self.draw_grid(1, self.gridSize-1, 1, self.gridSize-1)
# OPTIONAL: Add patterns to empty grid
# self.draw_pattern(blinkerPattern, 5, 5)
# self.draw_pattern(dieHardPattern, 11, 12)
# self.draw_pattern(gliderPattern, 2, 1)
# self.draw_pattern(iBeamPattern, 15, 10)
# self.draw_pattern(pulsarPattern, 13, 16)
# self.draw_pattern(spaceshipPattern, 1, 1)
# Game loop
while True:
try:
if self.running:
if self.ptime:
self.ttime = time.time()
self.update_grid()
if self.ptime:
print(time.time() - self.ttime)
self.canvas.after(self.speed)
self.canvas.update()
except TclError:
return
#### Game Logic ####
# Calculates the number of live cells around the cell at x, y and updates according to Conway's rules
def update_cell ( self, x, y ):
liveNeighbors = np.sum(self.life[x-1:x+2,y-1:y+2])-self.life[x][y]
if self.life[x][y]:
if liveNeighbors < 2 or liveNeighbors > 3:
self.tlife[x][y] = False
self.ulife[x][y] = True
else:
if liveNeighbors == 3:
self.tlife[x][y] = True
self.ulife[x][y] = True
# Iterates across board and updates the cells for the next generation
def update_grid ( self ):
# A 3x3 block is checked for dead cells to skip cells that cannot evolve in the current generation.
# whiteBack - Only dead cells in row behind current position
# whiteCur - Only dead cells in current row
# whiteFront - Only dead cells in front of current position
for i in np.arange(1, self.gridSize-1, 1):
whiteBack = True
whiteCur = False
if not self.life[i-1:i+2,1].any():
whiteCur = True
for j in np.arange(1, self.gridSize-1, 1):
if not self.life[i-1:i+2,j+1].any():
whiteFront = True
else:
whiteFront = False
if self.running and not (whiteBack and whiteCur and whiteFront):
self.update_cell(i, j)
if self.ulife[i][j]:
self.ulife[i][j] = False
self.draw_cell(i, j)
# Current row becomes Back row
# Front row becomes Current row
whiteBack = whiteCur
whiteCur = whiteFront
# Update game board with new states
self.life[:,:] = self.tlife[:,:]
#### Drawing Functions ####
# Draw single cell
def draw_cell ( self, i, j ):
x = self.xpad + i*self.boxWidth
y = self.ypad + j*self.boxWidth
fillColor = None
if self.tlife[i][j]:
fillColor = 'black'
else:
fillColor = 'white'
self.canvas.delete(self.cells[i][j])
self.cells[i][j] = self.canvas.create_rectangle(x, y, x+self.boxWidth, y+self.boxWidth, fill=fillColor)
# Draw a portion of the grid
def draw_grid ( self, xmin, xmax, ymin, ymax ):
for i in np.arange(xmin, xmax, 1):
for j in np.arange(ymin, ymax, 1):
self.draw_cell(i, j)
self.canvas.update()
# Draw a pattern
# pat - 2D Numpy array of bools specifying pattern
# x - Column of the pattern's upper left corner
# y - Row of pattern's the upper left corner
def draw_pattern ( self, pat, x, y ):
xmax = x + pat.shape[0]
ymax = y + pat.shape[1]
if x < 1 or y < 1 or xmax > self.gridSize-1 or ymax > self.gridSize-1:
print('Pattern out of bounds')
return
else:
self.life[x:xmax, y:ymax] = pat[:,:]
self.tlife[x:xmax, y:ymax] = pat[:,:]
self.ulife[x:xmax, y:ymax] = True
self.draw_grid(x, xmax, y, ymax)
# Draw the bordering cells, which are always dead.
def draw_border ( self ):
for i in np.arange(self.gridSize):
self.draw_cell(i, 0)
self.draw_cell(i, self.gridSize-1)
for i in np.arange(1, self.gridSize-1, 1):
self.draw_cell(0, i)
self.draw_cell(self.gridSize-1, i)
# Draw a red border around the board and display text at the top
def draw_frame ( self ):
self.uframe = False
self.canvas.delete(self.tlifeBorder)
self.canvas.delete(self.titleText)
self.canvas.delete(self.speedText)
twid = self.xpad+self.boxWidth*self.gridSize+1
yo10 = self.ypad/10.
xm1 = self.xpad-1
self.topBorder = self.canvas.create_rectangle(xm1, self.ypad-1, twid, self.ypad+self.boxWidth*self.gridSize+1, outline='red')
self.tlifeBorder = self.canvas.create_rectangle(xm1, yo10, self.windowWidth-self.xpad+1, self.ypad-yo10, outline='red', fill='white')
self.titleText = self.canvas.create_text(self.windowWidth/3., 5.*yo10, text='Conway\'s Game of Life', font=self.font1)
self.speedText = self.canvas.create_text(5*self.windowWidth/6., 5.*yo10, text='Speed = %.3f'%(1./self.speed), font=self.font2)
# Build application window, canvas, and create keybindings
def setup_tkinter_window ( self ):
self.root = Tk()
self.root.wm_title("Conway's Life")
self.font1 = tkFont.Font(family='Helvetica', size=20, weight='bold')
self.font2 = tkFont.Font(family='Helvetica', size=14)
self.topBorder = None
self.tlifeBorder = None
self.titleText = None
self.speedText = None
self.canvas = Canvas(self.root, width=self.windowWidth, height=self.windowHeight)
self.canvas.pack()
# Bind keys to functions
self.canvas.bind_all('<p>', self.pause)
self.canvas.bind_all('<r>', self.random_life)
self.canvas.bind_all('<c>', self.no_life)
self.canvas.bind_all('<q>', self.quit_key)
self.canvas.bind_all('<Up>', self.speed_up)
self.canvas.bind_all('<Down>', self.speed_down)
self.canvas.bind_all('<Button-1>', self.click)
#### Keybound Functions ####
# - Click - Toggle a cell if it is clicked on
def click ( self, event ):
x = int(np.floor((event.x-self.xpad)/self.boxWidth))
y = int(np.floor((event.y-self.ypad)/self.boxWidth))
if x < self.gridSize-1 and y < self.gridSize-1 and x > 0 and y > 0:
self.tlife[x][y] = self.life[x][y] = not self.life[x][y]
self.ulife[x][y] = True
self.draw_cell(x, y)
self.canvas.update()
# 'c' - Remove all life from the game grid
def no_life ( self, event ):
self.tlife = np.zeros_like(self.tlife)
self.life[:,:] = self.tlife[:,:]
self.ulife = np.ones_like(self.tlife)
self.draw_grid(0, self.gridSize, 0, self.gridSize)
# 'r' - Create life randomly on the board. 50/50 : dead/alive
def random_life ( self, event ):
for i in np.arange(1, self.gridSize-1, 1):
for j in np.arange(1, self.gridSize-1, 1):
if np.round(np.random.rand()) == 1:
self.tlife[i][j] = True
else:
self.tlife[i][j] = False
self.life[:,:] = self.tlife[:,:]
self.ulife = np.ones_like(self.tlife)
self.draw_grid(0, self.gridSize, 0, self.gridSize)
# - Up Arrow - Speed up the simulation
def speed_up ( self, event ):
self.uframe = False
if self.speed > 100:
self.speed -= 100
elif self.speed > 10:
self.speed -= 10
if self.uframe:
self.draw_frame()
# - Down Arrow - Slow down the simulation
def speed_down ( self, event ):
self.uframe = False
if self.speed < 100:
self.speed += 10
elif self.speed < 1200:
self.speed += 100
if self.uframe:
self.draw_frame()
def pause ( self, event ):
self.running = not self.running
def quit ( self ):
self.root.destroy()
def quit_key ( self, event ):
self.quit()
# Instatiate game
game = Life(wWidth=800, wHeight=800, bWidth=12, pow2=6)