Snake Game Completion

day-20/food.py

@@ -0,0 +1,18 @@
+from turtle import Turtle
+import random
+
+
+class Food(Turtle):
+    def __init__(self):
+        super().__init__()
+        self.shape("circle")
+        self.penup()
+        self.shapesize(stretch_len=0.5, stretch_wid=0.5)
+        self.speed(0)
+        self.color("red")
+        self.refresh()
+
+    def refresh(self):
+        random_x = random.randint(-280, 280)
+        random_y = random.randint(-280, 280)
+        self.goto(random_x, random_y)

day-20/main.py

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+from turtle import Screen
+from snake import Snake
+from food import Food
+from scoreboard import Scoreboard
+import time
+
+screen = Screen()
+screen.setup(width=600, height=600)
+
+screen.bgcolor("white")
+screen.title("Big Black Snake")
+screen.tracer(0)
+
+snake = Snake()
+food = Food()
+scoreboard = Scoreboard()
+
+screen.listen()
+screen.onkey(snake.up, "Up")
+screen.onkey(snake.down, "Down")
+screen.onkey(snake.left, "Left")
+screen.onkey(snake.right, "Right")
+
+game_is_on = True
+while game_is_on:
+    screen.update()
+    time.sleep(0.05)
+    snake.move_snake()
+
+ #Detect collision with food.
+    if snake.head.distance(food) < 15:
+        food.refresh()
+        snake.extend()
+        scoreboard.increase_score()
+
+    #Detect collision with wall.
+    if snake.head.xcor() > 280 or snake.head.xcor() < -280 or snake.head.ycor() > 280 or snake.head.ycor() < -280:
+        game_is_on = False
+        scoreboard.game_over()
+
+    #Detect collision with tail.
+    for full_snake in snake.full_snake:
+        if full_snake == snake.head:
+            pass
+        elif snake.head.distance(full_snake) < 10:
+            game_is_on = False
+            scoreboard.game_over()
+
+
+screen.exitonclick()

day-20/scoreboard.py

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+from turtle import Turtle
+ALIGNMENT = "center"
+FONT = ("Courier", 24, "normal")
+
+
+class Scoreboard(Turtle):
+
+    def __init__(self):
+        super().__init__()
+        self.score = 0
+        self.penup()
+        self.goto(0, 270)
+        self.hideturtle()
+        self.update_scoreboard()
+
+    def update_scoreboard(self):
+        self.write(f"Score: {self.score}", align=ALIGNMENT, font=FONT)
+
+    def game_over(self):
+        self.goto(0, 0)
+        self.write("GAME OVER", align=ALIGNMENT, font=FONT)
+
+    def increase_score(self):
+        self.score += 1
+        self.clear()
+        self.update_scoreboard()

day-20/snake.py

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+from turtle import Turtle
+
+STARTING_POSITION = [(0, 0), (-20, 0), (-40, 0)]
+MOVE_SNAKE = 10
+
+#DIRECTION IN DEGREES
+UP = 90
+DOWN = 270
+LEFT = 180
+RIGHT = 0
+
+class Snake:
+    def __init__(self):
+        self.full_snake = []
+        self.create_snake()
+        self.head = self.full_snake[0]
+
+    def create_snake(self):
+        for position in STARTING_POSITION:
+            self.add_segment(position)
+
+    def add_segment(self, position):
+        new_segment = Turtle("square")
+        new_segment.penup()
+        new_segment.goto(position)
+        self.full_snake.append(new_segment)
+
+    def extend(self):
+        self.add_segment(self.full_snake[-1].position())
+
+    def move_snake(self):
+        for snake_piece in range(len(self.full_snake) - 1, 0, -1):
+            new_x = self.full_snake[snake_piece - 1].xcor()
+            new_y = self.full_snake[snake_piece - 1].ycor()
+            self.full_snake[snake_piece].goto(new_x, new_y)
+        self.head.forward(MOVE_SNAKE)
+
+    def up(self):
+        if self.head.heading() != DOWN:
+            self.head.setheading(UP)
+
+    def down(self):
+        if self.head.heading() != UP:
+            self.head.setheading(DOWN)
+
+    def right(self):
+        if self.head.heading() != LEFT:
+            self.head.setheading(RIGHT)
+
+    def left(self):
+        if self.head.heading() != RIGHT:
+            self.head.setheading(LEFT)