how to make snake game using python

1#this code has asumed that you have intsalled pygame,time,random>
2import pygame
3import time
4import random
5 
6pygame.init()
7 
8white = (255, 255, 255)
9yellow = (255, 255, 102)
10black = (0, 0, 0)
11red = (213, 50, 80)
12green = (0, 255, 0)
13blue = (50, 153, 213)
14 
15dis_width = 600
16dis_height = 400
17 
18dis = pygame.display.set_mode((dis_width, dis_height))
19pygame.display.set_caption('Snake Game by Edureka')
20 
21clock = pygame.time.Clock()
22 
23snake_block = 10
24snake_speed = 15
25 
26font_style = pygame.font.SysFont("bahnschrift", 25)
27score_font = pygame.font.SysFont("comicsansms", 35)
28 
29 
30def Your_score(score):
31    value = score_font.render("Your Score: " + str(score), True, yellow)
32    dis.blit(value, [0, 0])
33 
34 
35 
36def our_snake(snake_block, snake_list):
37    for x in snake_list:
38        pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])
39 
40 
41def message(msg, color):
42    mesg = font_style.render(msg, True, color)
43    dis.blit(mesg, [dis_width / 6, dis_height / 3])
44 
45 
46def gameLoop():
47    game_over = False
48    game_close = False
49 
50    x1 = dis_width / 2
51    y1 = dis_height / 2
52 
53    x1_change = 0
54    y1_change = 0
55 
56    snake_List = []
57    Length_of_snake = 1
58 
59    foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
60    foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
61 
62    while not game_over:
63 
64        while game_close == True:
65            dis.fill(blue)
66            message("You Lost! Press C-Play Again or Q-Quit", red)
67            Your_score(Length_of_snake - 1)
68            pygame.display.update()
69 
70            for event in pygame.event.get():
71                if event.type == pygame.KEYDOWN:
72                    if event.key == pygame.K_q:
73                        game_over = True
74                        game_close = False
75                    if event.key == pygame.K_c:
76                        gameLoop()
77 
78        for event in pygame.event.get():
79            if event.type == pygame.QUIT:
80                game_over = True
81            if event.type == pygame.KEYDOWN:
82                if event.key == pygame.K_LEFT:
83                    x1_change = -snake_block
84                    y1_change = 0
85                elif event.key == pygame.K_RIGHT:
86                    x1_change = snake_block
87                    y1_change = 0
88                elif event.key == pygame.K_UP:
89                    y1_change = -snake_block
90                    x1_change = 0
91                elif event.key == pygame.K_DOWN:
92                    y1_change = snake_block
93                    x1_change = 0
94 
95        if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
96            game_close = True
97        x1 += x1_change
98        y1 += y1_change
99        dis.fill(blue)
100        pygame.draw.rect(dis, green, [foodx, foody, snake_block, snake_block])
101        snake_Head = []
102        snake_Head.append(x1)
103        snake_Head.append(y1)
104        snake_List.append(snake_Head)
105        if len(snake_List) > Length_of_snake:
106            del snake_List[0]
107 
108        for x in snake_List[:-1]:
109            if x == snake_Head:
110                game_close = True
111 
112        our_snake(snake_block, snake_List)
113        Your_score(Length_of_snake - 1)
114 
115        pygame.display.update()
116 
117        if x1 == foodx and y1 == foody:
118            foodx = round(random.randrange(0, dis_width - snake_block) / 10.0) * 10.0
119            foody = round(random.randrange(0, dis_height - snake_block) / 10.0) * 10.0
120            Length_of_snake += 1
121 
122        clock.tick(snake_speed)
123 
124    pygame.quit()
125    quit()
126 
127 
128gameLoop()

1import turtle
2import random
3
4WIDTH = 500
5HEIGHT = 500
6FOOD_SIZE = 10
7DELAY = 100  # milliseconds
8
9offsets = {
10    "up": (0, 20),
11    "down": (0, -20),
12    "left": (-20, 0),
13    "right": (20, 0)
14}
15
16def reset():
17    global snake, snake_direction, food_pos, pen
18    snake = [[0, 0], [0, 20], [0, 40], [0, 60], [0, 80]]
19    snake_direction = "up"
20    food_pos = get_random_food_pos()
21    food.goto(food_pos)
22    # screen.update() Only needed if we are fussed about drawing food before next call to `draw_snake()`.
23    move_snake()
24
25def move_snake():
26    global snake_direction
27
28    #  Next position for head of snake.
29    new_head = snake[-1].copy()
30    new_head[0] = snake[-1][0] + offsets[snake_direction][0]
31    new_head[1] = snake[-1][1] + offsets[snake_direction][1]
32
33    # Check self-collision
34    if new_head in snake[:-1]:  # Or collision with walls?
35        reset()
36    else:
37        # No self-collision so we can continue moving the snake.
38        snake.append(new_head)
39
40        # Check food collision
41        if not food_collision():
42            snake.pop(0)  # Keep the snake the same length unless fed.
43
44        #  Allow screen wrapping
45        if snake[-1][0] > WIDTH / 2:
46            snake[-1][0] -= WIDTH
47        elif snake[-1][0] < - WIDTH / 2:
48            snake[-1][0] += WIDTH
49        elif snake[-1][1] > HEIGHT / 2:
50            snake[-1][1] -= HEIGHT
51        elif snake[-1][1] < -HEIGHT / 2:
52            snake[-1][1] += HEIGHT
53
54        # Clear previous snake stamps
55        pen.clearstamps()
56
57        # Draw snake
58        for segment in snake:
59            pen.goto(segment[0], segment[1])
60            pen.stamp()
61
62        # Refresh screen
63        screen.update()
64
65        # Rinse and repeat
66        turtle.ontimer(move_snake, DELAY)
67
68def food_collision():
69    global food_pos
70    if get_distance(snake[-1], food_pos) < 20:
71        food_pos = get_random_food_pos()
72        food.goto(food_pos)
73        return True
74    return False
75
76def get_random_food_pos():
77    x = random.randint(- WIDTH / 2 + FOOD_SIZE, WIDTH / 2 - FOOD_SIZE)
78    y = random.randint(- HEIGHT / 2 + FOOD_SIZE, HEIGHT / 2 - FOOD_SIZE)
79    return (x, y)
80
81def get_distance(pos1, pos2):
82    x1, y1 = pos1
83    x2, y2 = pos2
84    distance = ((y2 - y1) ** 2 + (x2 - x1) ** 2) ** 0.5
85    return distance
86
87def go_up():
88    global snake_direction
89    if snake_direction != "down":
90        snake_direction = "up"
91
92def go_right():
93    global snake_direction
94    if snake_direction != "left":
95        snake_direction = "right"
96
97def go_down():
98    global snake_direction
99    if snake_direction != "up":
100        snake_direction = "down"
101
102def go_left():
103    global snake_direction
104    if snake_direction != "right":
105        snake_direction = "left"
106
107# Screen
108screen = turtle.Screen()
109screen.setup(WIDTH, HEIGHT)
110screen.title("Snake master play and have fanda")
111screen.bgcolor("yellow")
112screen.setup(500, 500)
113screen.tracer(0)
114
115# Pen
116pen = turtle.Turtle("square")
117pen.penup()
118
119# Food
120food = turtle.Turtle()
121food.shape("square")
122food.color("red")
123food.shapesize(FOOD_SIZE / 20)  # Default size of turtle "square" shape is 20.
124food.penup()
125
126# Event handlers
127screen.listen()
128screen.onkey(go_up, "Up")
129screen.onkey(go_right, "Right")
130screen.onkey(go_down, "Down")
131screen.onkey(go_left, "Left")
132
133# Let's go
134reset()
135turtle.done()