Page 242 - Scratch Programming Playground

this code is very similar to the wrap-around code we
wrote in the Asteroid Breaker game in Chapter 8. We’ll write
wrap-around code for moving left and right later.

Save Point

Click the green flag to test the code so far. press the a and d
keys to make the cat walk up and down the slopes. If the Cat
sprite walks off the edge of the Ground sprite and falls to the
bottom of the Stage, the Cat sprite should reappear at the top.
then click the red stop sign and save your program.
this platformer has many scripts, so you might get lost
if you get confused. If your program isn’t working and you
can’t figure out why, load the project file platformer1.sb2 from
the resources ZIp file. Click File ► Upload from your
computer in the Scratch editor to load the file, and continue
reading from this point.

4. Remove the Ground Lift Delay

the big problem with the code right now is that the Cat sprite
is lifted from inside the ground to on top of it very slowly. this
code needs to run so fast that the player only sees the sprite
on top of the ground, not in it.
the dark purple custom blocks can help us do this. Go to
the More Blocks category, and click the Make a Block button.

216 Chapter 9