Triggers, GetComponent, Switching Scenes

React to something entering a trigger

private void OnTriggerEnter(Collider other){
    Debug.Log("Fish entered, name is:");
    Debug.Log(other.gameObject.name);
}

GetComponent on itself

void Start(){
    GetComponent<CatScript>().healthPoints = 5;
    GetComponent<CatScript>().Meow();
}

GetComponent on other GameObject

public GameObject dog;

void Start(){
    dog.GetComponent<DogScript>().healthPoints = 5;
    dog.GetComponent<DogScript>().Bark();
}

Making variables/functions accessible in DogScript

public int healthPoints = 1;

public void Bark(){
    Debug.Log("Dog is barking!");
}

Switching Scenes

void Start(){
    UnityEngine.SceneManagement.SceneManager.LoadScene("SceneName");
}