Complete Unity Developer - Section 6 - Laser Defender

This is the Complete Unity Developer - one of the most successful e-learning courses on the internet! Completely re-worked from scratch with brand-new projects and our latest teaching techniques. You will benefit from the fact we have already taught over 360,336 students game development, many shipping commercial games as a result.

You're welcome to download, fork or do whatever else legal with all the files! The real value is in our huge, high-quality online tutorials that accompany this repo. You can check out the course here: Complete Unity Developer

In This Section

Introduction to Laser Defender

• Laser Defender introduction
• What Laser Defender teaches
  • Animation basics
  • Using Trigger colliders
  • Introduction to Particle Systems

Section 6 Game Design Document

Your Laser Defender Assets

Section 6 Notes

Importing The Menu System

• Open our previous game and import the menu system
• Create a unity package
• Import package into Laser Defender
• Alternatively, we can use the unitypackage from the section bundle at the beginning of this section

A Starship We Can Control

• Find a suitable sprite asset
• Import into our game
• Create a Player Controller Script to move it
• Restrict the movement to the playspace

Useful Links

• OpenGameArt.org
• Kenney · Game development studio, Netherlands · Home
• Space Shooter Redux

Restricting The Player's Position

• How to stop the spaceship from going outside the playspace
• We will check the position when moving and restrict it to something sensible

Creating The Enemies

• Creating the enemy prefab
• Create an EnemySpawner that will generate enemies at runtime
• Make the EnemySpawner generate a single enemy on start

Creating Enemy Positions

• Create a position within the EnemyFormation
• Use OnDrawGizmos() to show the position
• Turn the position into a prefab
• Change the spawning script to keep track of positions

Moving The Enemy Formation

• Showing the Formation in the Editor
• Show all four sides of the formation
• Move the formation side to side

Fixing The Formation Movement

• Fix the boundary issue with the formation getting stuck on the edge of the playspace

Spawning Projectiles

• Player object should spawns laser when [space] is pressed
• Create a laser prefab
• We use Instantiate() to create a new one
• We give the projectile velocity

Shooting Enemies

• Enemies will respond to the projectile hitting them.
• We use Kinematic Rigidbody Triggers for the enemies
• On trigger, enemy takes damage according to projectile component
• Defining the projectile behaviour
• Detect laser collisions
• Getting the damage from the lasers

Enemies Shooting Back

• Enemies will randomly shoot back with a tuneable frequency
• Make enemies shoot at the player
• Create enemy projectile
• Getting hit by the enemy
• Tuning the frequency

Controlling Collisions with Layers

• Player shoots itself when firing!
• Lasers hit each other!
• We need the player's projectile not to collide with itself or the player
• We need the enemy projectiles to not collide with enemies or each other

Detecting Enemies Have Been Destroyed

• We need to know when all enemies are dead
• We use the childCount property of a transform on the positions - an empty position is a dead enemy
• We re-spawn the enemies when that happens

Spawning Enemies One By One

• Learn how to use recursive functions for the first time
• Make something happen multiple times with a delay between each time

Enemy Position Animation

• Enemies should animate in, rather than appear
• Create an Animator and Animation Controller
• Create states to represent arriving and flying
• Add the appropriate animation

Creating A Starfield

• The background looks a little barren
• Let's add a starfield with parallax effect to give some sense of depth
• We can use a Particle System to do this.
• Explore Particle Effects

Keeping Score

• Requires Some object to keep track of the scores
• Create the UI for the score
• We'll create a ScoreKeeper that we attach to the score
• When an Enemy dies, we'll call the ScoreKeeper

Sound Effects For Fun And Profit

• Adding sound to your game
• Will make a huge difference to our game
• Easy enough to do
• We'll look at playing sounds independently of an object, so that we can play a death sound for the enemies

Sprite Rendering Order

• Sprite rendering order changes which sprites are drawn on top
• Lets missiles from the player be drawn below the ship when instantiated
• Create appropriate sorting layers
• Laser defender now with layers

Polishing The Menu System I

• Replacing the menu style
• Passing the score to the ends

Polishing The Menu System II

• Adding our own music to the game
• Adding a background starfield

Useful Links

• OpenGameArt.org
• Clearside - Home
• Clearside music

LD Unity 5 & Web GL Sharing (Optional)

• Upgrade to Unity 5.
• About Web GL builds.
• Build for Web GL and share.

DOWNLOAD Section 6 Unity Project

Here is our Unity project at this point in the section. Use it to compare code / settings etc if you get stuck.

Once un-zipped you can use File > Open Project in Unity, or browse the folders for any .unity file.

You can get to ALL videos end-state by...

1. Visiting https://github.com/CompleteUnityDeveloper
2. Clicking on the section name.
3. Clicking XX Commits at the top-left (XX will vary)
4. Against the video you want, click the <> button on right.
5. On final page, click Download Zip button.

Good luck!

Section 6 Wrap Up

• Recap and what's next
• New in your toolkit
• Trigger Colliders
• Sprite Animations
• Particle Systems
• Physics Layers
• Sorting Layers