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Challenge 3 - Balloons, Bombs, & Booleans

Apply your knowledge of physics, scrolling backgrounds, and special effects to a balloon floating through town, picking up tokens while avoiding explosives. You will have to do a lot of troubleshooting in this project because it is riddled with errors. 

The balloon floats upwards as the player holds spacebar

The background seamlessly repeats, simulating the balloon’s movement

Bombs and Money tokens are spawned randomly on a timer 

When you collide with the Money, there’s a particle and sound effect

When you collide with the Bomb, there’s an explosion and the background stops 

Challenge 3 - Starter Files.zip

 the .unitypackage into your project If you forget how to do this, refer to 

 folder, use the Challenge 3 - Outcome video as a guide to complete the challenge

Overview

When you import the challenge into your project, it is 

The purpose of the challenge is for you to fix those bugs, which are listed below. There are also hints at the bottom of the page to help you if you get stuck.

If you cannot fix the bugs and wish to delete the challenge files from your project, in the Project window, right-click on Assets > 

Warning

The balloon should float up as the player presses spacebar

The player can’t control the balloon

The background should move at start, then 

The background only moves when the game is over

Make bombs or money objects spawn every few seconds

No objects are being spawned 

Make the fireworks display at the balloon’s position

Fireworks appear to the side of the balloon

The background is not repeating properly

Prevent the player from floating their balloon too high 

Bonus: The balloon can float way too high

Make the balloon appear to bounce off of the ground, preventing it from leaving the bottom of the screen. There should be a sound effect when this happens, too!

Bonus: The balloon can drop below the ground

The balloon should float up as the player presses spacebar


Hint - There is a “NullReferenceExcepton” error on the player’s rigidBody variable - it has to be assigned in Start() using the GetComponent<> method

The background should move at start, then stop when the game is over


Hint - In MoveLeftX.cs, the objects should only Translate to the left if the game is NOT over

Make bombs or money objects spawn every few seconds


Hint - There is an error message saying, “Trying to Invoke method: SpawnManagerX.PrawnsObject couldn't be called” - spelling matters

Make the fireworks display at the balloon’s position


Hint - The fireworks particle is a child object of the Player - but its location still has to be set at the same location

Hint - The repeatWidth variable should be half of the background’s width, not half of its height

Bonus - Prevent the player from floating their balloon too high 


Hint - Add a boolean to check if the balloon isLowEnough, then only allow the player to add upwards force if that boolean is true

Bonus - Make the balloon appear to bounce off of the ground, preventing it from leaving the bottom of the screen. There should be a sound effect when this happens, too!


Hint - Figure out a way to test if the balloon collides with the ground object, then add an impulse force upward if it does

Hints

Control the execution of code with common logic structures 

Level 1 Application Scripting

Joy Horvath

Instructional Designer

Identify and resolve common programming errors, such as null reference exceptions, logical errors, and misuse of API calls.

Level 1 Debugging

CWC_Chal3_Overview_U6.mp4

In this challenge, you will reinforce the following skills/concepts:

Declaring and initializing variables with the GetComponent method

Displaying particle effects at a particular location relative to a gameobject

Seamlessly scrolling a repeating background  

Select the appropriate common Unity methods to use, e.g., Awake, Start, Update, FixedUpdate, Collision, and Trigger Events, given a desired feature to code

Achieve a desired result by using Unity API methods, given Unity’s script documentation

Achieve a desired result with different parameters by using various method overloads

Distinguish a correct use of any given Unity API method from an incorrect use

Control or trigger the state of components, such as an Animator Controller, Light, AudioSource, or User Interface element by using appropriate methods

Construct an input listener, given a scenario where a specific type of input is required

Print a message consisting of concatenated strings and variable values to the console by using Unity's Debug.Log method

Compose scripts that utilize various APIs

Identify bugs caused by failure to use the correct object lifecycle method, such as Awake, Start, or OnEnable

Unity Version 6.0