Page 64 - Learn To Program With Scratch

cart. If the clone detects that it is touching the cart w, that means it was
caught. Therefore, it increases the score, plays a sound, and deletes itself
(because it has no more work to do). If the clone falls below the cart x,
then the player missed; in this case, the clone plays a different sound
before deleting itself. If the clone is neither caught nor missed, then it’s
still falling, and the forever block goes around again.
Now that our apples know how to fall, the game is complete! Go ahead
and test it out by clicking the green flag. If you want to experiment, try
changing the wait time between cloning the different apples and the speed
of moving the cart. Does that give you some ideas for changing the game’s
difficulty?

more on cloned Sprites
Any sprite can copy itself or another sprite using the create clone of block.
(The Stage can also clone sprites using the same block.) A cloned sprite
inherits the original’s state at the time it is cloned—that is, the original’s
current position and direction, costume, visibility status, pen color, pen
size, graphic effects, and so on. This idea is illustrated in Figure 2-25.

At this point, the master sprite is
at (−100,0), pointing right, and its
size is set to 60%.
The position, direction, Master
and size of the clone will
be identical to those of the
master.
The master sprite changes its
position and direction, and Clone
returns to its original size.

Figure 2-25: A clone inherits the attributes of its master .

Clones also inherit the scripts of the master sprite, as shown in Fig-
ure 2-26. Here, the master sprite creates two clones. When you press the
spacebar, all three sprites (the master and the two clones) turn 15° to the
right because they all execute the when space key pressed script.

Clone1 Clone2 Master
Figure 2-26: Clones inherit the scripts of their master .

42 Chapter 2
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