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Checkoff

Once you've implemented everything in this handout, then for checkoff you're required to add these new features listed below.

Grading notes

As usual, the grading for this lab is binary (completed or not completed). This means you should implement all features above to obtain the mark. If you're already experienced with Unity and would like to experiment, you're free to implement similar features. In this checkoff, the feature we are looking for are: to existence of two or more different interactable objects that the player can manipulate, complete with some sound effects.

Don't worry, we are lenient and will give you the marks as long as we see some form of the requested feature.

Question Box​

As per how question box works in Mario:

  1. The question box bounces only when hit from below (not when Mario is jumping on top of it)
  2. Animate "blinking" of the question box
  3. It will spawn a coin, animated as shown
  4. Plays a sound effect when the coin spawns and the coin should land back inside the box
  5. The box sprite is changed to indicate that it's disabled once coin is spawned
  6. The question box, once disabled, should not bounce anymore

Brick​

The brick should behave as follows:

  1. It bounces once when hit from below, but not from anywhere else
  2. You should make two variant: can spawn a coin, or not
  3. It should not "break" (yet, because Mario is not in Super Mario form)
  4. Sound effect to be played when coin is collected
  5. You do not need to increase any score yet

Please watch the demo below for reference (turn on the sound):

tip

As shown in the recording above, the question box is comprised of three gameObjects: the parent GameObject called QuestionBox-Coin, and two children called Question-Box and Coin. The spawning of the coin is another animation clip, which triggers an event to play the sound once the coin drops back to the box. The RigidBody type of the Question-Box is then set into Static to disable the joint. We also apply three edge collider 2D at the parent GameObject QuestionBox-Coin so that the spring is not triggered when Mario hits the box from above (or stand on it).

The bouncing brick in the demo video above is implemented using animation rather than Spring Joint, which is easier to control (bounce exactly once). We use a hierarchy of GameObject, so that we can control the animation of the local coordinate of the Brick and the coin separately.

Next Time​

find question🤔

What to do next?

We will explore how to manage our games better in the next lab, mainly internal game state management and asset management. It's time to learn more advanced input management using The Unity Input System, SFX management using AudioMixer, and the observer design pattern.