Commit 0c3955b5 authored by Damien George's avatar Damien George
Browse files

examples: Update conwaylife to work with new LCD API.

parent 21ca2d76
#import essential libraries
import lcd
import pyb
lcd = pyb.LCD('x')
lcd.light(1)
# do 1 iteration of Conway's Game of Life
def conway_step():
for x in range(128): # loop over x coordinates
......@@ -21,26 +23,24 @@ def conway_step():
# apply the rules of life
if self and not (2 <= num_neighbours <= 3):
lcd.reset(x, y) # not enough, or too many neighbours: cell dies
lcd.pixel(x, y, 0) # not enough, or too many neighbours: cell dies
elif not self and num_neighbours == 3:
lcd.set(x, y) # exactly 3 neigbours around an empty cell: cell is born
lcd.pixel(x, y, 1) # exactly 3 neigbours around an empty cell: cell is born
# randomise the start
def conway_rand():
lcd.clear() # clear the LCD
lcd.fill(0) # clear the LCD
for x in range(128): # loop over x coordinates
for y in range(32): # loop over y coordinates
if pyb.rand() & 1: # get a 1-bit random number
lcd.set(x, y) # set the pixel randomly
lcd.pixel(x, y, pyb.rng() & 1) # set the pixel randomly
# loop for a certain number of frames, doing iterations of Conway's Game of Life
def conway_go(num_frames):
for i in range(num_frames):
conway_step() # do 1 iteration
lcd.show() # update the LCD
pyb.delay(300)
pyb.delay(50)
# PC testing
lcd = lcd.LCD(128, 32)
# testing
conway_rand()
conway_go(1000)
conway_go(100)
# LCD testing object for PC
# uses double buffering
class LCD:
def __init__(self, width, height):
self.width = width
self.height = height
self.buf1 = [[0 for x in range(self.width)] for y in range(self.height)]
self.buf2 = [[0 for x in range(self.width)] for y in range(self.height)]
def clear(self):
for y in range(self.height):
for x in range(self.width):
self.buf1[y][x] = self.buf2[y][x] = 0
def show(self):
print('') # blank line to separate frames
for y in range(self.height):
for x in range(self.width):
self.buf1[y][x] = self.buf2[y][x]
for y in range(self.height):
row = ''.join(['*' if self.buf1[y][x] else ' ' for x in range(self.width)])
print(row)
def get(self, x, y):
if 0 <= x < self.width and 0 <= y < self.height:
return self.buf1[y][x]
else:
return 0
def reset(self, x, y):
if 0 <= x < self.width and 0 <= y < self.height:
self.buf2[y][x] = 0
def set(self, x, y):
if 0 <= x < self.width and 0 <= y < self.height:
self.buf2[y][x] = 1
......@@ -6,8 +6,44 @@ def delay(n):
pass
rand_seed = 1
def rand():
def rng():
global rand_seed
# for these choice of numbers, see P L'Ecuyer, "Tables of linear congruential generators of different sizes and good lattice structure"
rand_seed = (rand_seed * 653276) % 8388593
return rand_seed
# LCD testing object for PC
# uses double buffering
class LCD:
def __init__(self, port):
self.width = 128
self.height = 32
self.buf1 = [[0 for x in range(self.width)] for y in range(self.height)]
self.buf2 = [[0 for x in range(self.width)] for y in range(self.height)]
def light(self, value):
pass
def fill(self, value):
for y in range(self.height):
for x in range(self.width):
self.buf1[y][x] = self.buf2[y][x] = value
def show(self):
print('') # blank line to separate frames
for y in range(self.height):
for x in range(self.width):
self.buf1[y][x] = self.buf2[y][x]
for y in range(self.height):
row = ''.join(['*' if self.buf1[y][x] else ' ' for x in range(self.width)])
print(row)
def get(self, x, y):
if 0 <= x < self.width and 0 <= y < self.height:
return self.buf1[y][x]
else:
return 0
def pixel(self, x, y, value):
if 0 <= x < self.width and 0 <= y < self.height:
self.buf2[y][x] = value
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