unity3d Optimization Cache references
Example
Cache references to avoid the expensive calls especially in the update function. This can be done by caching these references on start if available or when available and checking for null/bool flat to avoid getting the reference again.
Examples:
Cache component references
change
void Update()
{
var renderer = GetComponent<Renderer>();
renderer.material.SetColor("_Color", Color.green);
}
to
private Renderer myRenderer;
void Start()
{
myRenderer = GetComponent<Renderer>();
}
void Update()
{
myRenderer.material.SetColor("_Color", Color.green);
}
Cache object references
change
void Update()
{
var enemy = GameObject.Find("enemy");
enemy.transform.LookAt(new Vector3(0,0,0));
}
to
private Transform enemy;
void Start()
{
this.enemy = GameObject.Find("enemy").transform;
}
void Update()
{
enemy.LookAt(new Vector3(0, 0, 0));
}
Additionally cache expensive calls like calls to Mathf where possible.
