Turtle is a Python feature like a drawing board, which lets us command a turtle to draw all over it! We can use functions like turtle.forward(…) and turtle.right(…) which can move the turtle around. Let’s create a basic animation where different little turtles race around a track created for them.
Prerequisites: Turtle Programming in Python
Requirements:
- Turtle Module
- Random Module
Approach:
- Firstly, import the required modules.
- There are different shapes of pointer available in the turtle module(like arrow, classic and turtle). As this is a “Turtle Race”, we need the ‘turtle’ and ‘classic’ shape.
- We’ll use the classic shape to draw the racing track.
- List the specs of the first turtle, enter the turtle in the track and set the turtle ready for the race.
- Do the same for the rest of the turtles.
- Use the randint() to set the speed of the turtles.
Below is the implementation.
Python3
# required modulesfrom turtle import * from random import randint # classic shape turtlespeed(0)penup()goto(-140, 140) # racing trackfor step in range(15): write(step, align ='center') right(90) for num in range(8): penup() forward(10) pendown() forward(10) penup() backward(160) left(90) forward(20)# first player detailsplayer_1 = Turtle()player_1.color('red')player_1.shape('turtle') # first player proceeds to racing trackplayer_1.penup()player_1.goto(-160, 100)player_1.pendown() # 360 degree turnfor turn in range(10): player_1.right(36)# second player detailsplayer_2 = Turtle()player_2.color('blue')player_2.shape('turtle') # second player enters in the racing trackplayer_2.penup()player_2.goto(-160, 70)player_2.pendown() # 360 degree turnfor turn in range(72): player_2.left(5)# third player detailsplayer_3 = Turtle()player_3.shape('turtle')player_3.color('green') # third player enters in the racing trackplayer_3.penup()player_3.goto(-160, 40)player_3.pendown() # 360 degree turnfor turn in range(60): player_3.right(6)# fourth player detailsplayer_4 = Turtle()player_4.shape('turtle')player_4.color('orange') # fourth player enters in the racing trackplayer_4.penup()player_4.goto(-160, 10)player_4.pendown() # 360 degree turnfor turn in range(30): player_4.left(12)# turtles run at random speedsfor turn in range(100): player_1.forward(randint(1, 5)) player_2.forward(randint(1, 5)) player_3.forward(randint(1, 5)) player_4.forward(randint(1, 5)) |
Output:
Output Explanation:
- The code starts by creating a new turtle object and setting its color to red.
- The turtle’s shape is set to the classic shape of a turtle, which is (0, 0), (140, 140), and (-140, 140).
- Next, the code creates a speed variable and sets it to zero.
- The penup() function is then called, which causes the turtle to stand up straight.
- Next, the goto function is used to move the turtle 140 pixels towards the right side of the screen.
- The for loop starts at step 15 and runs for 8 steps.
- At each step, four different actions are performed: first, write(step) displays text in centered position; second, right(90) moves the cursor 90 pixels to the right; thirdly forward(10) moves the turtle 10 pixels forward; fourthly pendown() pauses execution for a moment so that drawing can be resumed with next line.
- Finally at step 16 forward(20) is executed moving the turtle 20 pixels further forward on screen.
- At step 17 player_1 = Turtle() assigns player_1 as an instance variable of player_1 object created at previous step.
- This object has two properties: color and shape .
- Color property holds value
- The code creates a Turtle object and sets its color to red.
- It also sets the shape of the turtle to be that of a classic turtle.
- The code then starts a loop that will run for 15 steps.
- At each step, the code will write out the value of step in centered text.
- After writing out the step, the code will move right 90 degrees and then do a series of eight random math operations with num as their parameter.
- These operations will result in the following: -Pen up -Forward 10 pixels -Pendown -Forward 10 pixels -Pen up -Backward 160 pixels -Left 90 degrees After completing these eight random operations, the code will once again.
