Asteroids

Controls

wasd to move 

shoot with mouse left click or spacebar

Code

https://github.com/katpavan/asteroids

Learned/Notes

• prefabs for bullet and asteroid
  • both dynamic Rigidbody2D because we want physics to act on them
• bullets are kinematic since we don't want physics to act on them
  • if we did, then we'd make them dynamic
• Instantiate 
  • to create bullets from the prefab
• OnCollisionEnter2D
  • to detect collisions with game objects that have colliders
• FixedUpdate
  • recommended to use when dealing with physics since it goes off on a set interval unlike Update which is dependent on a player's machine (framerate)
• physics 
  • _rigidbody.AddForce
  • _rigidbody.AddTorque
  • _rigidbody.mass
• this.gameObject.SetActive(false)
• used FindObjectOfType 
  • instead of utilizing the Singleton pattern
• Destroy(this.gameObject, maxLifetime);
  • to destroy asteroids and bullets
• asteroid stuff
  • InvokeRepeating
    • to spawn asteroids
  • _spriteRenderer.sprite = sprites[Random.Range(0, sprites.Length)];        
    • randomize asteroid image
  •  this.transform.eulerAngles = new Vector3(0.0f, 0.0f, Random.value * 360.0f);
    • randomize rotation                 
  • this.transform.localScale = Vector3.one *  this.size; 
    • randomize scale