Page 74 - Learn To Program With Scratch

Say “aaaaa” for a short time and
increase the sprite’s size by 10. At
the end of the loop, the sprite’s
size will have increased by 50%.

Reduce the sprite’s size
gradually to its original size.

Clear the speech bubble, so the
sprite isn’t saying anything.
Figure 3-5: This script makes the Cat sprite sneeze .

The size of the sprite increases as it gets ready to sneeze, and after it
sneezes, it returns slowly to its original size. Run the program and watch
what happens to get a feel for these commands.

try it out 3-3
Add a block to the end of the script in Figure 3-5 to have the Cat sprite finish its
dramatic sneeze by vanishing afterward . Add another block to show the sprite at
the beginning of the script .

Layers
The last two commands in the Looks palette affect the order in which sprites
are drawn on the Stage. This order determines which sprites are visible when
they overlap. For example, let’s say that you want to create a scene of a girl
standing behind a big rock. There are two layering possibilities, shown in
Figure 3-6 (left).

The Rock sprite The Girl sprite ... Layer 3
is in the front. is in the front.
Layer 2
Layer 1

Front

Figure 3-6: The sprite in the front layer is completely visible and can cover
parts of overlapping sprites .

52 Chapter 3
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