How to create flying/falling objects in Scratch

In this tutorial we will get a spaceship to fall from the top to the bottom of the screen.

Add the following code to your sprite (e.g. Spaceship):

To understand this script you need to understand how x and y coordinates work in Scratch.
When using scratch the “playing area” is based on the following grid:

• The centre of the grid is (x=0, y=0)
• The bottom left corner is (x=-240, y=-180)
• The top right corner is (x=240, y=180)

You can download this helpsheet as a pdf: How to create flying or falling objects in Scratch