Programming 301

1. What will this code block do? {"func":"registerSpriteTrigger","next":{"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}}

• When the Actor is clicked, the Actor will appear in the middle of the screen
• When the Actor is clicked, the Actor will appear on the right side of the screen
• When the project plays, the Actor will appear in the middle of the screen
• When the project plays, the Actor will appear on the right side of the screen

2. What will this code block do? {"func":"registerSpriteTrigger","next":{"func":"blockLooksHide"}}

• When the Actor is clicked, the Actor will disappear from the screen
• When the Actor is clicked, the Actor will appear in the middle of the screen
• When the Actor is clicked, the Actor will play a sound
• When the Actor is clicked, the Actor will appear on the screen

3. Annie was working on a game where she hides her Actors when she clicks on them. When she tried playing the game again, the Actors were still hidden. What can she add to fix this?

• She should use {"func":"registerFlagTrigger","next":{"func":"blockLooksShow"}}
• She should use {"func":"registerFlagTrigger","next":{"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}}
• She should use {"func":"registerSpriteTrigger","next":{"func":"blockLooksShow"}}
• She should use {"func":"registerSpriteTrigger","next":{"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}}

4. Ben is programming a game where monsters show up in a random position on the stage. What can he add to each monster's code so that they appear in different locations each time the game is played?

• {"func":"registerFlagTrigger","next":{"func":"blockMotionGoTo","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"300"},{"type":"number","value":"300"}]},{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"-200"},{"type":"number","value":"200"}]}]}}
• {"func":"registerFlagTrigger","next":{"func":"blockLooksHide"}}
• {"func":"registerFlagTrigger","next":{"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}}
• {"func":"registerFlagTrigger","next":{"func":"blockLooksNextCostume"}}

5. True or false: The value of the Point in Direction block will affect where the Actor ends up in this code block: {"func":"blockMotionPointDirection","values":[{"type":"string","value":"90"}],"next":{"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}}

• True
• False

6. True or false: The value of the Point in Direction block will affect where the Actor ends up in this code block: {"func":"blockMotionPointDirection","values":[{"type":"string","value":"90"}],"next":{"func":"blockMotionGoTo","values":[{"type":"number","value":"100"},{"type":"number","value":"-200"}]}}

• True
• False

7. Daniel added background music to his game, but it stops after playing once. He wants it to loop for the entire game. How can he fix this?

• He should put the Play Sound block in a Forever loop, like this: {"func":"registerFlagTrigger","next":{"func":"blockControlForever","containers":[{"func":"blockSoundPlay","values":[{"type":"string","value":"bg music"}]}]}}
• He should put the Play Sound block in a Repeat loop, like this: {"func":"registerFlagTrigger","next":{"func":"blockControlRepeat","values":[{"type":"number","value":"10"}],"containers":[{"func":"blockSoundPlay","values":[{"type":"string","value":"bg music"}]}]}}
• He needs to add the sound to the Stage, and it should automatically loop forever
• He should put the Play Sound block under a When Actor Clicked block, like this {"func":"registerSpriteTrigger","next":{"func":"blockSoundPlay","values":[{"type":"string","value":"bg music"}]}}

8. Ellie wants to program a ghost to say "Boo!" a random number of times when the player clicks on him. Which code blocks will help her do that?

• {"func":"registerSpriteTrigger","next":{"func":"blockControlRepeat","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"1"},{"type":"number","value":"5"}]}],"containers":[{"func":"blockLooksSayFor","values":[{"type":"string","value":"Boo!"},{"type":"number","value":"1"}],"next":{"func":"blockControlWait","values":[{"type":"number","value":".1"}]}}]}}
• {"func":"registerSpriteTrigger","next":{"func":"blockControlRepeat","values":[{"type":"number","value":"5"}],"containers":[{"func":"blockLooksSayFor","values":[{"type":"string","value":"Boo!"},{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"1"},{"type":"number","value":"5"}]}],"next":{"func":"blockControlWait","values":[{"type":"number","value":".1"}]}}]}}
• {"func":"registerSpriteTrigger","next":{"func":"blockControlRepeat","values":[{"type":"number","value":"5"}],"containers":[{"func":"blockLooksSayFor","values":[{"type":"string","value":"Boo!"},{"type":"number","value":"1"}],"next":{"func":"blockControlWait","values":[{"type":"number","value":".1"}]}}]}}
• {"func":"registerSpriteTrigger","next":{"func":"blockControlRepeat","values":[{"type":"number","value":"5"}],"containers":[{"func":"blockLooksSayFor","values":[{"type":"string","value":"Boo!"},{"type":"number","value":"1"}],"next":{"func":"blockControlWait","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"1"},{"type":"number","value":"5"}]}]}}]}}

9. True or false: You can pick random negative numbers.

• True
• False

10. Richard is trying to make the Actor disappear. Which block will make the Actor disappear from the screen?

• {"func":"blockLooksHide"}
• {"func":"blockLooksShow"}
• {"func":"blockControlForever","containers":[null]}
• {"type":"wrapper","func":"valueSensingTouchingColor","values":[{"type":"color","value":"#00ff00"}]}

11. Frank is trying to spawn zombies from the center of the Stage. Which of these blocks should he use?

• {"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}
• {"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}
• {"func":"blockMotionPointDirection","values":[{"type":"string","value":"90"}]}
• {"func":"blockMotionGoTowards","values":[{"type":"string","value":"mouse-pointer"}]}

12. Gabe is trying to teleport a character from a portal Actor on one side of the screen to a portal Actor on the other side of the screen. What would be the easiest block to use for this task?

• {"func":"blockMotionGoTo","values":[{"type":"number","value":"0"},{"type":"number","value":"0"}]}
• {"func":"blockMotionGoTowards","values":[{"type":"string","value":"portal2"}]}
• {"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}
• {"func":"blockMotionGoTowards","values":[{"type":"string","value":"mouse-pointer"}]}

13. What would this code block do to an Actor? {"func":"registerSpriteTrigger","next":{"func":"blockMotionGoTo","values":[{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"-100"},{"type":"number","value":"110"}]},{"type":"wrapper","func":"valueOpRandom","values":[{"type":"number","value":"-100"},{"type":"number","value":"100"}]}]}}

• It would send the Actor to a random position when the Actor was clicked
• It would send the Actor to a random position when the program was started
• It would send the Actor to the center of the screen when the Actor was clicked
• It would send the Actor to the center of the screen when the program was started

14. True or false: It is not possible to show an Actor again after hiding it.

• True
• False

15. What does this code block do when it is run? {"func":"blockMotionPointDirection","values":[{"type":"string","value":"90"}],"next":{"func":"blockMotionMove","values":[{"type":"number","value":"10"}],"next":{"func":"blockMotionPointDirection","values":[{"type":"string","value":"-90"}],"next":{"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}}}}

• It would move the Actor to the right and back to where it started
• It would move the Actor right twice
• It would move the Actor left twice
• It would move the Actor to the left and back to where it started