Page 238 - Scratch Programming Playground

and download the ZIp file to your computer by right-clicking
the link and selecting Save link as or Save target as. extract
all the files from the ZIp file. the skeleton project file has all
the sprites already loaded, so you’ll only need to drag the code
blocks into each sprite.

A create gravity, falling,
and landing

In the first part, we’ll
add gravity, falling, and
landing code, similar to
the Basketball game in
Chapter 4. the important
difference is that in the
platform game, the cat lands
when it touches a ground
sprite rather than the bot-
tom of the Stage. Coding
is a bit trickier, because
we want the ground to
have hills and eventually
platforms!
to start, click the text field at the top left of the Scratch
editor and rename the project from Untitled to Platformer.
1. Create the Ground Sprite

Let’s use a simple shape for the ground in the first few scripts,
just to explore how the code will work.
Click the Paint new sprite button next to New sprite
to create a temporary ground sprite while you learn about
platforming code. In the paint editor, use the Brush or Line
tool to draw a shape for the ground. You can make the lines
thicker by using the Line width slider in the bottom-left corner
of the paint editor. Be sure to draw a gentle slope on the right
and a steep slope on the left.

212 Chapter 9