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The classic game of Hot Potato is a great one for kids to explore how to translate the rules of a game to a program. It is a good starting point for thinking about any coding project: what are the rules/requirements; what are my resources; how can I break the problem down into smaller steps. We'll walk through this program one block at a time.
Main Code
Main Code
- makes Sphero not constantly trying to correct its orientation
- creates the parameters to determine how many freefalls will occur before the game ends
- announces that it is time to play
- sets the color of the mainLED
On freefall event
On freefall event
Sphero has an algorithm that allows it to determine when it is experiencing a freefall event and you can then make something happen when that event occurs.
- make a noise when a freefall happens
- Decrement the numTime variable by 1
- If numTime = 0 then
- You lose!
- Else
- you haven't lost yet, but we'lll change the color of color variable to something random
- strobe the
mainLEDusing thecolorRandomvariable value - set the
mainLEDcolor to thecolorRandomvariable value
You lose!
You lose!
When you lose the game (the Sphero lands in your hands and the numTime is decremented to 0) these blocks will execute.
- Play the sad music and then immediately jump into the next step, without waiting
- Strobe the red warning lights
- Raw motor set like this will make it sort of shake like crazy in your hand, providing physical feedback along with the visual lights, and audio sad music
- and the finality, your out!
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