UNITY | PROJECT | SPACE SHOOTER 2D | 4. Enemy Animation & Enemy Spawner

Creating Enemy Animation

• by selecting multiple Sprites and adding them in the scene, Create “EnemyAnimation”

 

Changing the name of EnemyAnimationController

 

“Enemy” GameObject

 

“Enemy” GameObject with Animation

 

Adding “EnemyControl” Script to “Enemy” GameObject

 

“EnemyControl” Script

• Set the speed of Enemy with a float variable “speed”
• in “Update()” method
  • change the position of “enemy” GameObject with “transform.position” every frame
  • for memory usage, destroy “enemy” when it goes out of the screen

 

“Enemy” Moving

 

“Enemy” Destroyed when outside of the screen

 

Creating “Enemy” Prefab

 

Creating “EnemySpawner” & Adding “EnemySpawner” Script

• Create Empty GameObject and change its name into “EnemySpawner”
• Create “EnemySpawner” Script and add it to “EnemySpawner”

 

“EnemySpawner” Script

• To use “Enemy Prefab” in the script as a component
  • add “Public GameObject” variable
  • Don’t forget to add the reference in the inspector
• Create a custom Function, SpawnEnemy()
  • Instantiate()
  • after instantiating, set the position of Enemy in a random position by using random range of “x” value
• To make it spawn in 5 seconds
  • in “Start()”, write “Invoke(string methodName, float time)”
  • set the “maxSpawnRateInSeconds” as 5 seconds

 

Enemy Spawning

 

Don’t forget to add the reference

 

“EnemySpawner” Script

• Create a function, “ScheduleNextEnemySpawn()” to spawn multiple times
  • by using, “Invoke()” and putting “ScheduleNextEnemySpawn()” inside “SpawnEnemy()”
    • without using “loop”, we can make enemy spawned continuously
• To increase the difficulty of the game, Create a function, “IncreaseSpawnRate()”
  • in “Start()”
    • by using “InvokeRepeating(sting methodName, float time, float repeatRate)”
      • every 30 mins, the Spawnrate will be increased(Spawning gets faster)
      • In “InvokeRepeating()”, “time” is 0 and “repeatRate” is 30, meaning every 30 secs, “IncreaseSpawnRate()” is invoked

 

Spawning Enemies

UNITY TUTORIAL | PROJECT | Roll a Ball | 1. Setting up the Game

Roll a Ball

Setting up the Game

Creating a new project

3D Object | Plane

 

Resetting Transform of GameObject

 

Edit – Frame Selected

Seeing GameObject in Scene view with “Frame Selected”

Gizmos – Show Grid

No Grid Line

 

Creating “Sphere” GameObject as Player

 

Changing Values

Edit – Frame Selected

Sphere | Transform

Sphere | Transforma | Position | Y value

Directional Light | Material | Background

Changing Color of Material

Checking Material in GameObject | Default Material

 

Applying Material to GameObject

 

Wrong Direction of Directional Light

Changing Rotation