My Blocks Category
1. Make a block
If the block you want cannot be found in current block categories, you can click Make a Block to create one.
2. Set the appearance of your block
Set the appearance of your block in the Make a Block dialog box.
3. Set the function of your block
Drag the function blocks you want and drop them under the hat block define ( ) to set the function.
4. Test the block you create
After the preceding settings, the block tumble is created. Drag the block to another script and see whether the sprite tumbles.