Page 261 - Scratch Programming Playground

When the cat is standing still (that is, not moving left or
right), the frame variable should be reset to 0. Modify the Cat
sprite’s existing when green flag clicked script to add a third
if then block that resets the frame variable.

Be sure to put the green and block
in the if then block first. You want the
not blocks to go inside the and block.

Now let’s write some code to deter-
mine which costume to show. We’ll use
this code in a few places in the scripts
we’ve written, so let’s make a custom
block.
In the dark purple More Blocks cate-
gory, click the Make a Block button
and name this block set correct cos-
tume. Click the gray Options triangle,
check the option Run without screen
refresh, and then click OK. add the
following blocks to the Cat sprite, start-
ing with the new define set correct
costume block.

MakING aN advaNCed pLatforMer 235