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@IdrisCytron
Last active June 2, 2021 06:50
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Playing the Snake game on Raspberry Pi Sense Hat
from sense_hat import SenseHat
from time import sleep
import random
sense = SenseHat()
sense.low_light = True
GREEN = (0, 255, 0)
RED = (255, 0, 0)
YELLOW = (255, 255, 0)
START_DELAY = 3
MATRIX_MIN_VALUE = 0
MATRIX_MAX_VALUE = 7
MATRIX_SIZE = 8
while True:
gameOverFlag = False
growSnakeFlag = False
generateRandomFoodFlag = False
snakeMovementDelay = 0.5
snakeMovementDelayDecrease = -0.02
score = 0
sense.clear()
sense.show_message("SNAKE GAME")
# Set default snake starting position (values are chosen by preference)
snakePosX = [3]
snakePosY = [6]
# Generate random food position
while True:
foodPosX = random.randint(0, 7)
foodPosY = random.randint(0, 7)
if foodPosX != snakePosX[0] or foodPosY != snakePosY[0]:
break
# Set default snake starting direction (values are chosen by preference)
movementX = 0
movementY = -1
while not gameOverFlag:
# Check if snake eats food
if foodPosX == snakePosX[0] and foodPosY == snakePosY[0]:
growSnakeFlag = True
generateRandomFoodFlag = True
snakeMovementDelay += snakeMovementDelayDecrease
score = score + 1
# Check if snake bites itself
for i in range(1, len(snakePosX)):
if snakePosX[i] == snakePosX[0] and snakePosY[i] == snakePosY[0]:
gameOverFlag = True
# Check if game-over
if gameOverFlag:
break
# Check joystick events
for event in sense.stick.get_events():
if event.direction == "left" and movementX != 1:
movementX = -1
movementY = 0
elif event.direction == "right" and movementX != -1:
movementX = 1
movementY = 0
elif event.direction == "up" and movementY != 1:
movementY = -1
movementX = 0
elif event.direction == "down" and movementY != -1:
movementY = 1
movementX = 0
# Grow snake
if growSnakeFlag:
growSnakeFlag = False
snakePosX.append(0)
snakePosY.append(0)
# Move snake
for i in range((len(snakePosX) - 1), 0, -1):
snakePosX[i] = snakePosX[i - 1]
snakePosY[i] = snakePosY[i - 1]
snakePosX[0] += movementX
snakePosY[0] += movementY
# Check game borders
if snakePosX[0] > MATRIX_MAX_VALUE:
snakePosX[0] -= MATRIX_SIZE
elif snakePosX[0] < MATRIX_MIN_VALUE:
snakePosX[0] += MATRIX_SIZE
if snakePosY[0] > MATRIX_MAX_VALUE:
snakePosY[0] -= MATRIX_SIZE
elif snakePosY[0] < MATRIX_MIN_VALUE:
snakePosY[0] += MATRIX_SIZE
# Spawn random food
if generateRandomFoodFlag:
generateRandomFoodFlag = False
retryFlag = True
while retryFlag:
foodPosX = random.randint(0, 7)
foodPosY = random.randint(0, 7)
retryFlag = False
for x, y in zip(snakePosX, snakePosY):
if x == foodPosX and y == foodPosY:
retryFlag = True
break
# Update matrix
sense.clear()
sense.set_pixel(foodPosX, foodPosY, RED)
for x, y in zip(snakePosX, snakePosY):
sense.set_pixel(x, y, GREEN)
# Snake speed (game loop delay)
sleep(snakeMovementDelay)
# Blink the dead snake
for loop in range (5):
sense.clear()
sense.set_pixel(foodPosX, foodPosY, RED)
for x, y in zip(snakePosX, snakePosY):
sense.set_pixel(x, y, RED)
sleep(0.5)
sense.clear()
sense.set_pixel(foodPosX, foodPosY, RED)
for x, y in zip(snakePosX, snakePosY):
sense.set_pixel(x, y, GREEN)
sleep(0.5)
sense.clear()
# Display score
while score:
sense.show_message("Score: {}".format(score), text_colour=YELLOW)
# Press joystick middle button to play again
for event in sense.stick.get_events():
if event.direction == "middle":
score = 0
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