⚙️ Events and Concurrent Actions
Learn the fundamentals of event-driven programming where multiple actions respond to triggers. Explore how sprites and objects listen for events like clicks, key presses, and broadcasts, and execute tasks simultaneously. Understand how games and interactive programs use events to create responsive, dynamic experiences. **What you'll learn:** - Identify events and event handlers in code - Predict behavior when multiple events happen at once - Design programs where sprites respond to different triggers - Understand concurrent (simultaneous) execution in events
Questions in this quiz
Answers hidden — play to find out.
- Question 1
In event-driven programming, what is an event?
- Question 2
True or False: When you click a button in a game, the code that responds to that click is called an event handler.
- Question 3
Look at the following code. What happens when the space key is pressed?
- Question 4
Which of the following is an example of an event in a video game?
- Question 5
In your game, Sprite A listens for a broadcast message called 'go'. What happens when 'go' is broadcast?
- Question 6
True or False: Only one sprite can respond to an event at a time in a program.
- Question 7
What is concurrent execution in event-driven programming?
- Question 8
Look at the following code. If both the space key and the 'R' key are pressed at exactly the same time, which statements are true?
- Question 9
True or False: An event handler can only do one thing; it cannot run multiple actions.
- Question 10
You are designing a game where clicking the mouse should make a sprite jump. Which part of your code is the event?
- Question 11
In a program with multiple sprites, you broadcast the message 'explode'. Three different sprites are all listening for 'explode'. What happens?
- Question 12
True or False: A sprite cannot respond to the same event twice at the same time.
- Question 13
Look at the following code. What will happen when the flag (start) is clicked?
- Question 14
Which of these is the best design for a game where two players each control a different sprite with different keys?
- Question 15
True or False: If a sprite receives a broadcast message but has no event handler set up to receive it, the broadcast is ignored.
- Question 16
You have three sprites: A, B, and C. Sprite A broadcasts 'freeze' when the space key is pressed. Sprites B and C both have event handlers for 'freeze' that make them stop moving. What happens when space is pressed?