python snake code code example

Example 1: python snake game code

#this code has asumed that you have intsalled pygame,time,random>
import pygame
import time
import random
 
pygame.init()
 
white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)
 
dis_width = 600
dis_height = 400
 
dis = pygame.display.set_mode((dis_width, dis_height))
pygame.display.set_caption('Snake Game by Edureka')
 
clock = pygame.time.Clock()
 
snake_block = 10
snake_speed = 15
 
font_style = pygame.font.SysFont("bahnschrift", 25)
score_font = pygame.font.SysFont("comicsansms", 35)
 
 
def Your_score(score):
    value = score_font.render("Your Score: " + str(score), True, yellow)
    dis.blit(value, [0, 0])
 
 
 
def our_snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])
 
 
def message(msg, color):
    mesg = font_style.render(msg, True, color)
    dis.blit(mesg, [dis_width / 6, dis_height / 3])
 
 
def gameLoop():
    game_over = False
    game_close = False
 
    x1 = dis_width / 2
    y1 = dis_height / 2
 
    x1_change = 0
    y1_change = 0
 
    snake_List = []
    Length_of_snake = 1
 
    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
 
    while not game_over:
 
        while game_close == True:
            dis.fill(blue)
            message("You Lost! Press C-Play Again or Q-Quit", red)
            Your_score(Length_of_snake - 1)
            pygame.display.update()
 
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()
 
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0
 
        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
            game_close = True
        x1 += x1_change
        y1 += y1_change
        dis.fill(blue)
        pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]
 
        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True
 
        our_snake(snake_block, snake_List)
        Your_score(Length_of_snake - 1)
 
        pygame.display.update()
 
        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1
 
        clock.tick(snake_speed)
 
    pygame.quit()
    quit()
 
 
gameLoop()

Example 2: snake python

import pygame
import numpy
import random
import math
pygame.init()
clock = pygame.time.Clock()
screen = pygame.display.set_mode((377, 377))
grid = numpy.zeros((15, 15), dtype="int8")
for i in range(4):
    grid[7][2+i] = 2
apple_pos = [7, 11]
grid[apple_pos[0]][apple_pos[1]] = 5
snake = [[7, 2], [7, 5]]
d = [2, 2]
direction_list = []
keys = [pygame.K_UP, pygame.K_RIGHT, pygame.K_DOWN, pygame.K_LEFT]
colors = [(0, 150, 150), (0, 255, 0), (255, 0, 0)]
frames = 0
moving = False
while True:
    frames += 1
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            quit()
        if event.type == pygame.KEYDOWN:
            for i in range(len(keys)):
                if event.key == keys[i]:
                    moving = True
                    direction_list.append(i+1)
    if moving and frames >= 10:
        frames = 0
        if len(direction_list) > 0:
            d[1] = direction_list[0]
            direction_list.pop(0)
        d[0] = grid[snake[0][0]][snake[0][1]]
        last_pos = [snake[0][:], snake[1][:]]
        for i in range(2):
            snake[i][round((d[i] % 2-1)*-1)] += round(5/24*d[i]**4 - 25/12*d[i]**3 + 151/24*d[i]**2 - 65/12*d[i])
            grid[last_pos[i][0]][last_pos[i][1]] = d[i] * i
            if i:
                for n in range(2):
                    if snake[i][n] < 0 or snake[i][n] > 14:
                        quit()
                if 5 > grid[snake[i][0]][snake[i][1]] > 0:
                    quit()
                if snake[i] == apple_pos:
                    grid[last_pos[0][0]][last_pos[0][1]] = d[0]
                    snake[0] = last_pos[0]
                    while grid[apple_pos[0]][apple_pos[1]] != 0:
                        apple_pos = [random.randint(0, 14), random.randint(0, 14)]
                    grid[apple_pos[0]][apple_pos[1]] = 5
                grid[snake[i][0]][snake[i][1]] = d[1]
    for row in range(len(grid)):
        for pos in range(len(grid[row])):
            pygame.draw.rect(screen, colors[round((math.log(grid[row][pos]+1))-0.15)], (25*pos + 2, 25*row + 2, 23, 23))
    clock.tick(60)
    pygame.display.update()

Example 3: snake

<!DOCTYPE html>
<html>
<head>
  <title></title>
  <style>
  html, body {
    height: 100%;
    margin: 0;
  }

  body {
    background: black;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  canvas {
    border: 1px solid white;
  }
  </style>
</head>
<body>
<canvas width="400" height="400" id="game"></canvas>
<script>
var canvas = document.getElementById('game');
var context = canvas.getContext('2d');

var grid = 16;
var count = 0;
  
var snake = {
  x: 160,
  y: 160,
  
  // snake velocity. moves one grid length every frame in either the x or y direction
  dx: grid,
  dy: 0,
  
  // keep track of all grids the snake body occupies
  cells: [],
  
  // length of the snake. grows when eating an apple
  maxCells: 4
};
var apple = {
  x: 320,
  y: 320
};

// get random whole numbers in a specific range
// @see https://stackoverflow.com/a/1527820/2124254
function getRandomInt(min, max) {
  return Math.floor(Math.random() * (max - min)) + min;
}

// game loop
function loop() {
  requestAnimationFrame(loop);

  // slow game loop to 15 fps instead of 60 (60/15 = 4)
  if (++count < 4) {
    return;
  }

  count = 0;
  context.clearRect(0,0,canvas.width,canvas.height);

  // move snake by it's velocity
  snake.x += snake.dx;
  snake.y += snake.dy;

  // wrap snake position horizontally on edge of screen
  if (snake.x < 0) {
    snake.x = canvas.width - grid;
  }
  else if (snake.x >= canvas.width) {
    snake.x = 0;
  }
  
  // wrap snake position vertically on edge of screen
  if (snake.y < 0) {
    snake.y = canvas.height - grid;
  }
  else if (snake.y >= canvas.height) {
    snake.y = 0;
  }

  // keep track of where snake has been. front of the array is always the head
  snake.cells.unshift({x: snake.x, y: snake.y});

  // remove cells as we move away from them
  if (snake.cells.length > snake.maxCells) {
    snake.cells.pop();
  }

  // draw apple
  context.fillStyle = 'red';
  context.fillRect(apple.x, apple.y, grid-1, grid-1);

  // draw snake one cell at a time
  context.fillStyle = 'green';
  snake.cells.forEach(function(cell, index) {
    
    // drawing 1 px smaller than the grid creates a grid effect in the snake body so you can see how long it is
    context.fillRect(cell.x, cell.y, grid-1, grid-1);  

    // snake ate apple
    if (cell.x === apple.x && cell.y === apple.y) {
      snake.maxCells++;

      // canvas is 400x400 which is 25x25 grids 
      apple.x = getRandomInt(0, 25) * grid;
      apple.y = getRandomInt(0, 25) * grid;
    }

    // check collision with all cells after this one (modified bubble sort)
    for (var i = index + 1; i < snake.cells.length; i++) {
      
      // snake occupies same space as a body part. reset game
      if (cell.x === snake.cells[i].x && cell.y === snake.cells[i].y) {
        snake.x = 160;
        snake.y = 160;
        snake.cells = [];
        snake.maxCells = 4;
        snake.dx = grid;
        snake.dy = 0;

        apple.x = getRandomInt(0, 25) * grid;
        apple.y = getRandomInt(0, 25) * grid;
      }
    }
  });
}

// listen to keyboard events to move the snake
document.addEventListener('keydown', function(e) {
  // prevent snake from backtracking on itself by checking that it's 
  // not already moving on the same axis (pressing left while moving
  // left won't do anything, and pressing right while moving left
  // shouldn't let you collide with your own body)
  
  // left arrow key
  if (e.which === 37 && snake.dx === 0) {
    snake.dx = -grid;
    snake.dy = 0;
  }
  // up arrow key
  else if (e.which === 38 && snake.dy === 0) {
    snake.dy = -grid;
    snake.dx = 0;
  }
  // right arrow key
  else if (e.which === 39 && snake.dx === 0) {
    snake.dx = grid;
    snake.dy = 0;
  }
  // down arrow key
  else if (e.which === 40 && snake.dy === 0) {
    snake.dy = grid;
    snake.dx = 0;
  }
});

// start the game
requestAnimationFrame(loop);
</script>
</body>
</html>