Cache other scripts

Questions & Answers
1

Hey guys,
I just want to make sure I understand something correctly. The following code is bad practice because GetComponent<> has a significant performance cost so running it several times a second would slow the game down:

void Update() {
ADifferentGameObject.GetComponent<AScriptOnThatGameObject>().SomeString = "SomeValue";
}

But the following is just fine because I first cache the script:

AScriptOnThatGameObject MyScriptOnThatGameObject;

void Start() {
MyScriptOnThatGameObject = ADifferentGameObject.GetComponent<AScriptOnThatGameObject>();
}

void Update() {
MyScriptOnThatGameObject.SomeString = "SomeValue";
}

Is this right? Thanks in advance!

2

This is absolutely right :wink:
You can even do these assignments in Awake ().

Same goes for simple object creation, I usually don’t create Vector3 and such in Update, I put them at the class root and assign them in Update, so that they don’t get created and garbage collected every frame.