Programming 101

1. What does the {"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"0"},{"type":"number","value":"10"}]} block return?

• A random number between 0 and 10
• 5
• The name of the Actor
• The block does not return something

2. Some blocks called 'return' blocks don't do anything on screen, but they 'return' some kind of value. For example, you can replace the 10 in {"func":"blockMotionMove","values":[{"type":"number","value":"10"}]} with a return block that returns a number. Which of the following blocks is a 'return' block? (Hint: You could replace the 10 in 'Move 10 Pixels' with this block)

• {"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":""},{"type":"number","value":""}]}
• {"func":"blockMotionMove","values":[{"type":"number","value":""}]}
• {"func":"blockMotionChangeXBy","values":[{"type":"number","value":""}]}
• {"func":"blockMotionTurnCW","values":[{"type":"string","value":""}]}

3. How do you make a Balloon Actor only show up when the user presses a button? The button has already has the following code.
{"func":"registerSpriteTrigger","next":{"func":"blockControlBroadcast","values":[{"type":"string","value":"start"}]}}

• Add {"func":"registerBroadcastTrigger","values":[{"type":"string","value":"start"}],"next":{"func":"blockLooksShow"}} to the balloon's code
• Add {"func":"registerFlagTrigger","next":{"func":"blockLooksHide"}} to the balloon's code
• Add {"func":"blockLooksShow"} to the button's code
• Add {"func":"blockLooksNextCostume"} to the balloon's code

4. True or False: The {"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"10"},{"type":"number","value":"20"}]} code block can return the number 0.

• True
• False

5. True or False: You can use the {"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":""},{"type":"number","value":""}]} block to pick a random number of seconds to wait by putting the {"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":""},{"type":"number","value":""}]} block inside a {"func":"blockControlWait","values":[{"type":"number","value":""}]} block.

• True
• False

6. Which of the following code blocks make an Actor appear on a random spot on the Stage? Remember, the X values on the Stage range from -682 to 682, and the Y values range from -384 to 384.

• {"func":"blockMotionGoTo","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"-682"},{"type":"number","value":"682"}]},{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"-384"},{"type":"number","value":"384"}]}]}
• {"func":"blockMotionMove","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"-682"},{"type":"number","value":"682"}]}]}
• {"func":"blockMotionPointDirection","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"0"},{"type":"number","value":"360"}]}],"next":{"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}}
• {"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}

7. How do you make a balloon starting at the bottom of the stage float upwards, without ever stopping?

• {"func":"blockControlForever","containers":[{"func":"blockMotionChangeYBy","values":[{"type":"number","value":"5"}],"next":{"func":"blockControlWait","values":[{"type":"number","value":".1"}]}}]}
• {"func":"blockControlRepeat","values":[{"type":"number","value":"10"}],"containers":[{"func":"blockMotionChangeYBy","values":[{"type":"number","value":"5"}]}]}
• {"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}
• {"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"200"}]}

8. If you have 3 Costumes, how would you pick a random Costume to switch to?

• {"func":"blockLooksSwitchCostume","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"1"},{"type":"number","value":"3"}]}]}
• Use the {"func":"blockLooksSwitchCostume","values":[{"type":"string","value":""}]} block and enter any number that you want.
• {"func":"blockControlForever","containers":[{"func":"blockLooksNextCostume"}]}
• You cannot do this in Tynker