Complete Unity Developer 2D - Block Breaker

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In This Section

In this section we use Unity's physics engine to create a wall-breaking game. (Ref: BR_CUD)

How To Build / Compile

Lecture List

Here are the lectures of the course for this section.

1 Welcome To Block Breaker

In this video (objectives)…

1. Overview of this section.
2. Focus on Unity's physics engine and collisions.
3. Lots of creative opportunity to make your own levels, background, blocks, rules, tuning and so on.

After watching (learning outcomes)… Ready and raring to start this section.

2 Block Breaker Game Design

In this video (objectives)…

1. Fundamental aspects of our design.
2. Ideas for your game.
3. Challenge for your game theme, background image and name.

After watching (learning outcomes)… Clear on the game design we will use for Block Breaker.

3 Export & Import Package

In this video (objectives)…

1. Export scenes and SceneLoader.cs from previous project.
2. Import package into our new project.
3. Set up build settings, change aspect ratio, update text.

After watching (learning outcomes)… Export scenes and logic from one project and import as a package into another.

4 World Units & Play Space

In this video (objectives)…

1. Discuss what Unity World Units are.
2. Set up our camera size.
3. Import and set up background image, paddle, ball and block.

After watching (learning outcomes)… Understand world units and set up play space.

5 Rigidbody & Colliders

In this video (objectives)…

1. Add a Rigidbody2D to the ball so that it has gravity influencing it.
2. Add colliders to ball and block so that they collider.

After watching (learning outcomes)… Able to add the core physics components to 2D objects.

6 Add Unity Physics Material

In this video (objectives)…

1. Add Polygon Collider 2D to our paddle.
2. Add Physics Material 2D to our ball.
3. Bounce!

After watching (learning outcomes)… Make a game object bounce off another game object.

7 Colliders, Collision & Triggers

In this video (objectives)…

1. Stop our ball rotating by freezing Z axis rotation on our Rigidbody.
2. Create a lose collider.
3. Discuss difference between trigger and collider and examine the event matrix for collision events.
4. Load Game Over screen when ball passes through lose collider.

After watching (learning outcomes)… Make the game load a new scene when an object passes through a trigger volume.

8 Move Object With Mouse

In this video (objectives)…

1. Find the position of the mouse on the screen.
2. Convert the mouse position into a relative proportion of our screen represented as game units.
3. Link movement of our mouse to movement of our paddle.

After watching (learning outcomes)… Move a game object so that it matches the position of the player's mouse.

9 Limit With Mathf.Clamp()

In this video (objectives)…

1. Figure out the range we want to allow the paddle to move on x axis.
2. use Mathf.Clamp() to limit the paddle's movement.

After watching (learning outcomes)… Use Mathf.Clamp() to limit the movement of a game object.

10 Distance As A Vector2

In this video (objectives)…

1. Understand how to calculate the distance from ball to paddle.
2. Update location of the ball to match the location of the paddle plus our offset.

After watching (learning outcomes)… Stick the ball to the paddle.

11 Launch The Ball

In this video (objectives)…

1. Create a method to give the ball an upwards velocity.
2. Create a bool which allows us to determine if the game has started yet and therefore stop locking the ball to the paddle.

After watching (learning outcomes)… Launch the ball with upward velocity from the paddle.

12 Block Breaker Instructor Hangout #1

In this video (objectives)…

1. Ben and Rick discuss the use of public variables versus [SerializeField].

After watching (learning outcomes)… Understand why we avoid using public variables in our classes.

13 Play Space & Gravity

In this video (objectives)…

1. Add walls for our ball to bounce off.
2. Alter the gravity so that the ball doesn't slow down due to gravity.

After watching (learning outcomes)… Set up our play space and change our gravity.

14 Destroy GameObject

In this video (objectives)…

1. Add Block.cs script to our block.
2. Use the Destroy() method to destroy the block once its hit.
3. Discuss the option to set arguments for the method.

After watching (learning outcomes)… Destroy our block when the ball hits it.

15 Using Prefabs In Unity

In this video (objectives)…

1. Create our first prefab.
2. Experiment with how prefabs work.
3. Set our snap settings.
4. Build a level.

After watching (learning outcomes)… Use prefabs and build a level out of prefabbed blocks.

16 Make A Second Level

In this video (objectives)…

1. Prefab all of the game objects that are required for our game levels.
2. Create Level 2 using our prefabbed objects.

After watching (learning outcomes)… Create a second level using prefabbed assets.

17 Fraction Too Much Friction

In this video (objectives)…

1. Identify the issue - the ball slows down after hitting the side of the paddle.
2. Alter the physics material friction value to remove all friction on the ball.

After watching (learning outcomes)… Stop the ball slowing down when it collides with the paddle.

18 GetComponent To Play Audio

In this video (objectives)…

1. Understand Audio Listener, Audio Source and Audio Clip.
2. Use GetComponent to access the Audio Source and play our clip.
3. Ensure that the sound does not start until the ball is launched.

After watching (learning outcomes)… Trigger sound effect each time the ball collides with something.

19 Play Random Sound From Array

In this video (objectives)…

1. Use PlayOneShot instead of Play.
2. Create an array and then use that array to randomly select one of many audio clips.
3. Cache our component reference.

After watching (learning outcomes)… Randomly play one of many sound effects when an event takes place.

20 PlayClipAtPoint()

In this video (objectives)…

1. Examine our problem with destroying our GameObject and therefore destroying the ability to play our destroyed SFX.
2. Use PlayClipAtPoint() to solve the issue of our AudioSource being destroyed.

After watching (learning outcomes)… Play sounds from objects which are being destroyed.

21 Count Breakable Blocks

In this video (objectives)…

1. Map out our workflow for determining how many blocks are in a scene so that we can know when we reach zero.
2. Create level GameObject and script.
3. Increment our number of blocks for each block in our scene.
4. Introduction to FindObjectOfType.

After watching (learning outcomes)… Tally up the total number of blocks in our scene.

22 Win The Level & Load

In this video (objectives)…

1. Create a public method for decreasing total number of blocks when a block is destroyed.
2. Use FindObjectOfType to access our level loading methods.

After watching (learning outcomes)… Load the next level when all blocks in a level have been destroyed.

23 Using Time.timeScale

In this video (objectives)…

1. Use [Range] to create a constrained slider in our inspector.
2. Add Time.timeScale to adjust the speed of our entire game instead of needing to play around with gravity and velocity.
3. Hunt down an error by updating our other level with our prefabs.

After watching (learning outcomes)… Able to change the speed of our game using Time.timeScale.

24 Add Player Score

In this video (objectives)…

1. Create currentScore and pointsPerBlockDestroyed variables.
2. Create a public method that adds to our score when called.
3. Call the method which increases our score when a block is destroyed.

After watching (learning outcomes)… Able to increase the player's score when a block is destroyed.

25 Display Player Score

In this video (objectives)…

1. Create TextMeshPro text, import font, tweak till we're happy.
2. Use ToString() to update our text field with our current score.

After watching (learning outcomes)… Able to display and update the player's score in the UI.

26 Implement Singleton Pattern

In this video (objectives)…

1. Introduce the Singleton Pattern.
2. Use DontDestroyOnLoad().
3. Examine the Unity script execution order to see that we can use Awake() for our singleton.

After watching (learning outcomes)… Able to implement a Singleton Pattern to ensure that our score persists across level load.

26b Singleton Pattern Bug Fix

In this video (objectives)…

1. Inserted a simple fix for bugs we are seeing with the Singleton.
2. Immediately set the game object to inactive and then destroy it.

After watching (learning outcomes)… Fix one of the known issues with the singleton not destroying itself correctly.

27 Reset Game Session

In this video (objectives)…

1. Reinforce the public method paradigm we've been using.
2. Fix the issue with our score persisting from game session to game session.
3. How to rename a class.

After watching (learning outcomes)… How to elegantly reset our game session so that our score resets.

28 Instantiate GameObject

In this video (objectives)…

1. Review how Instantiate() works, discussing method overloads and signatures.
2. Create code for instantiating a particle effect when we destroy a block.

After watching (learning outcomes)… Able to instantiate a GameObject through our code.

29 Using Tags In Unity

In this video (objectives)…

1. Getting schwifty with tags - understanding the what and why of using them.
2. Creating an unbreakable block type which... doesn't... break!

After watching (learning outcomes)… Able to use tags to create an unbreakable block type.

30 Block Damage Levels

In this video (objectives)…

1. Create 2 variables we can compare - maxHits and timesHit.
2. Implement a conditional statement to destroy block if maxHits is more than timesHit.

After watching (learning outcomes)… Create a simple system of multiple damage levels for our blocks.

31 Damage Affordance

In this video (objectives)…

1. Create an array to hold our damage sprites.
2. Change our sprite renderer depending upon how many hits a block has taken.

After watching (learning outcomes)… Change the sprite displayed for a block based upon how many hits it has taken.

32 Smarter maxHits Logic

In this video (objectives)…

1. Remove blocks and recreate our playtesting level.
2. Add code to provide a warning if our array is missing sprites.
3. Remove the manual process for defining maxHits and link this to the array size of our sprites.

After watching (learning outcomes)… Add warnings to catch mistakes and remove one place we could make a mistake.

33 Prevent Boring Ball Loops

In this video (objectives)…

1. What's our problem? Boring ball loops.
2. How can we solve it? Adding velocity tweaks to our balls when they bounce into things.

After watching (learning outcomes)… Add velocity tweaks to our balls to stop them being boring.

34 Extreme! Tuning!

In this video (objectives)…

1. Discuss the concept of extreme tuning - why use it.
2. Audit our current project for places that we can apply some extreme tuning.
3. Rick does some extreme tuning.

After watching (learning outcomes)… Able to audit your project and apply extreme tuning to make your project rad.

35 Tune & Playtest

In this video (objectives)…

1. Refer back to your player experience to determine how you tune your game.

2. Tune all of your game variables so that you're happy with them.

3. Ask a friend to playtest.

After watching (learning outcomes)…

Tune your game so that it matches your player experience.

36 Autoplay for Playtesting

In this video (objectives)…

1. Create an if statement to test if we have enabled autoplay.
2. If auto play is enabled, change the paddle's x position to the same as the ball's x position.

After watching (learning outcomes)… Able to lock the paddle to the ball using an autoplay toggle.

37 Make Levels & Upload

In this video (objectives)…

1. Add extra levels so that you have at least 5 levels.
2. Create a WebGL build and share to ShareMyGame.com

After watching (learning outcomes)… Finish your game and upload for the community to check out.

37b Block Breaker Instructor Hangout #2

In this video (objectives)...

1. Discussion about the endless loop issue.
2. Public versus [SerializeField].
3. What are messages and how are they called.

After watching (learning outcomes)…

Ben and Rick talk about a few issues that came up in this section of the course.

38 Block Breaker Wrap-Up

In this video (objectives)...

1. Well done for the great creativity in this section.
2. You can add to your project or push on to the next section.

After watching (learning outcomes)…

Onwards and upwards to the next section of the course!