You can use a Window Timer to generate your 500 ms timer ticks instead of polling.
https://docs.pysimplegui.com/en/latest/documentation/module/timer_apis/
Here's the snake game code using a Window timer.
BTW, screenshots of programs like this would be great to drop into a readme! It looks nice!
import PySimpleGUI as sg
from random import randint
def convert_pos_to_pixel(cell):
tl = cell[0] * CELL_SIZE, cell[1] * CELL_SIZE
br = tl[0] + CELL_SIZE, tl[1] + CELL_SIZE
return tl, br
def place_apple():
apple_pos = randint(0, CELL_NUM - 1), randint(0, CELL_NUM - 1)
while apple_pos in snake_body:
apple_pos = randint(0, CELL_NUM - 1), randint(0, CELL_NUM - 1)
return apple_pos
# game constants
FIELD_SIZE = 400
CELL_NUM = 10
CELL_SIZE = FIELD_SIZE / CELL_NUM
# snake
snake_body = [(4, 4), (3, 4), (2, 4)]
DIRECTIONS = {'left': (-1, 0), 'right': (1, 0), 'up': (0, 1), 'down': (0, -1)}
direction = DIRECTIONS['up']
# apple
apple_pos = place_apple()
apple_eaten = False
sg.theme('Green')
field = sg.Graph(
canvas_size=(FIELD_SIZE, FIELD_SIZE),
graph_bottom_left=(0, 0),
graph_top_right=(FIELD_SIZE, FIELD_SIZE),
background_color='black')
layout = [[field]]
window = sg.Window('Snake', layout, return_keyboard_events=True)
window.timer_start(500) # start a repeating 500ms timer
while True:
event, values = window.read()
if event == sg.WIN_CLOSED:
break
if event == 'Left:37':
direction = DIRECTIONS['left']
if event == 'Up:38':
direction = DIRECTIONS['up']
if event == 'Right:39':
direction = DIRECTIONS['right']
if event == 'Down:40':
direction = DIRECTIONS['down']
if event == sg.EVENT_TIMER:
# apple snake collision
if snake_body[0] == apple_pos:
apple_pos = place_apple()
apple_eaten = True
# snake update
new_head = (snake_body[0][0] + direction[0], snake_body[0][1] + direction[1])
snake_body.insert(0, new_head)
if not apple_eaten:
snake_body.pop()
apple_eaten = False
# check death
if not 0 <= snake_body[0][0] <= CELL_NUM - 1 or \
not 0 <= snake_body[0][1] <= CELL_NUM - 1 or \
snake_body[0] in snake_body[1:]:
break
field.DrawRectangle((0, 0), (FIELD_SIZE, FIELD_SIZE), 'black')
tl, br = convert_pos_to_pixel(apple_pos)
field.DrawRectangle(tl, br, 'red')
# draw snake
for index, part in enumerate(snake_body):
tl, br = convert_pos_to_pixel(part)
color = 'yellow' if index == 0 else 'green'
field.DrawRectangle(tl, br, color)
window.close()
You can use a Window Timer to generate your 500 ms timer ticks instead of polling.
https://docs.pysimplegui.com/en/latest/documentation/module/timer_apis/
Here's the snake game code using a Window timer.
BTW, screenshots of programs like this would be great to drop into a readme! It looks nice!