Custom-Sized Sprites!

Goals:

• Specify the dimensions of custom sprites

Coding Snippets:

Math and Computer Concepts:

• The quoted text in the snippets above is a data type called a string. Strings are used in coding to store and convey non-numeric as well as numeric information.
• It is essential to get the syntax for the Sprite constructor's string argument correct. For example, color must precede dimensions, and you must use a lower-case x, rather than * or X. Also, the dimensions are width×height, not the other way around, with no embedded spaces.
• The order in which sprites are created determines which appears on top. If you create sprite B after sprite A, B will obscure A.

Activities:

Save each of the following in a folder called SpriteSizing.

Create an OddBlocks program containing sprites in different sizes and shapes. Design the blocks so that they can ultimately fit together, without overlapping, like pieces in a puzzle. Then move them all into place!

Code a Window script that begins by making a background of random dots. Create a giant, black sprite that covers the entire screen (and then some), then use fill erase to remove a paned window in the middle of it. Make the sprite move around to reveal a changing view of the background.
• RingsInMotion: Create a program with multiple rings (each a sprite) spinning around a central point at different speeds, resulting in a constantly changing pattern:


InsideSpiral: Create a spinning spiral sprite, similar to the one created in the previous lesson. But this time put a border around it, so you can't see where the spiral ends. Do this by adding a larger sprite on top of your spiral, with a round "framed window" in it.