Lecture 14 — Vertical Motion & Animation⌗

Instructor: Laksh Budhrani

Objectives⌗

1. Understand how changing the Y-coordinate creates vertical movement.
2. Apply variables to animate objects moving upward over time.

How Vertical Animation Works⌗

Moving an object up or down follows the exact same logic as horizontal movement, but instead of changing the X-coordinate, we change the Y-coordinate.

1. Draw the object at its current vertical position (y).
2. Increase or decrease the Y-variable each frame.
3. Redraw the object at its new vertical coordinate.

Guided Activity — Moving Rocket⌗

We will write the rocket animation code together in class.

Create a new Python file named animation_rocket.py.

Rocket Animation Video⌗

Starter Template⌗

Copy this template into animation_rocket.py. We will fill in the code together.

from animation import run_sketch

def draw(p):
    pass
    # Write the car drawing code here


    # Update the car's position here


run_sketch(draw, bgcolor="lightblue")

Independent Activity — Hot Air Balloon⌗

Create a new Python file named animation_balloon.py.

Hot Air Balloon Animation Video⌗

Your Task⌗

Create a hot air balloon and animate it moving upward from the bottom of the screen.

Your animation should:

• Draw a hot air balloon structure including the balloon bag, string lines, and a basket.
• Use a variable to store the balloon’s vertical position (balloon_y).
• Update the position each frame so the balloon floats upward toward the sky.

Use the rocket animation as a guide, but write the balloon code yourself.

Submission Instructions⌗

Submit your work in Google Classroom by:

1. Creating a Google Doc.
2. Pasting your code into the document.
3. Adding a screenshot of the animation window.
4. Turning in the Google Doc to the assigned activity.