1. Functions / Blocks

2. Why USE You have code that you are repeating in multiple places
i.e. redundant code
By putting in an block, you can make a change in one place and have that change affects every place you use the block
Related piece of code

3. Types of Blocks Note the Shape: Note the Shape: Note the shape:
Command
Reporter
Predicate
Note the Shape:
Note the Shape:
Note the shape:

4. How to make a block Right-Click on the Scripting Area
Select make a block …
The Make a block dialog appears
Select the Category
Type the name of the Block and press OK

5. Add code to the Block
Drag blocks into the scripting area within the Block Editor
Click Apply
Note that the block now appears in the Palette in the category that you chose – Pen in this case.
Click OK
Use that block like others

6. How to make a block with inputs
Right-Click on the Scripting Area
Select make a block …
The Make a block dialog appears
Select the Category
Type the name of the Block make polygon and press OK
Click the + between make and polygon
The Create input name dialog appears
Give the input a name sides

7. Make a block with inputs
Add code to the script
To use the input, click on the input name sides and drag it where you want to use it.
Click Apply
The block shows up in the palette
User can input a value where sides is in the block.

8. Exercises
Create a draw house block that uses your draw square and draw triangle blocks together to draw a "house" shape: a square with a triangular shaped roof sitting on top. (You might have to do some debugging to get the two shapes to connect properly.)
Build a draw row of houses block that draws a row of attached houses, each new one to the right of the previous, until the sprite moves too close to the right edge of the screen. For that, you will need repeat until.
Create a honeycomb block (with an input to let you control the size) that uses your hexagon block three times to create this design: 
blocks.html?topic=nyc_bjc%2F1-intro- loops.topic&course=bjc4nyc.html&novideo&noassignment

9. Reporters and Predicates

10. Blocks that return a value - Reporters
Note the Shape:

11. Predicates - Blocks that return a BOOLean
Booleans are TRUE or FALSE values

12. How to create a visual Score

13. Visual Scores
Goal

14. Visual Scores
Goal

15. Visual Scores
Goal

16. Visual Scores
Add 2 sprites for each score

17. Visual Scores Add in costumes for each of the digits
Get costumes from C:\BYOB\Media\Costumes\Letters or the web
Drag and drop the 10 costumes into each costume.

18. Visual scores
Add code to both number sprites to orient the number correctly when the game is started.
Add code to broadcast a score change
Add code to receive that broadcast in the “ones” digit of the visual score.

19. Visual Scores
Add code to the “tens” digit to update the score.