Book Image

Raspberry Pi Projects for Kids (Second Edition)

By : Daniel Leonard Bates
Book Image

Raspberry Pi Projects for Kids (Second Edition)

By: Daniel Leonard Bates

Overview of this book

Table of Contents (14 chapters)

Interactive animation

We now have two different animated sprites, each doing their own thing. One of the special features of Scratch is that it makes interactive animation simple—we can program a sprite to react to you!

Create a new sprite in the same way as you did before using the Choose new sprite from file button. For this animation, we're going to have a simple conversation with the user, so choose an image of something that can talk. Find a good position and size for the new sprite, then build the following script in its script area:

There are a few new code blocks here. Let's go through them one by one:

  • ask and wait: This gives the sprite a speech bubble, asking a question in a box. This block can be found in the Sensing section. The script will stop until the user has typed an answer into a text box on screen.

  • answer: The answer to the question is stored in this block, and is also in the Sensing section.

  • join: This takes two pieces of text and merges them into a longer sentence.

  • say...