Hello, i have a simple question really…i am just getting started with unity.
I need to be able to load a new level when i enter a doorway…i have the doorway prefabbed but i dont know the coding language yet and i would like to load a level when the box collider is triggered…i dont see a connection from the box collider to the level loading script text…Also if there is a list of script code language i could use it! i may be asking plenty of questions, so far i have been looking at you tube. I just discovered UNITY a couple weeks ago now…! it is so awesome, it is literally what i have always wanted… <—insert drooling here haha 
- Create a Box Collider on the door
and set the Trigger Flag to ON
- Add a script to the Door and in the
OnTriggerEnter() Method call
the level you want to load using
Application.LoadLevel()
Here is the OnTriggerEnter portion of your door script, note you are looking for the script component of the player but you could also look for the player by name or tag:
void OnTriggerEnter(Collider other)
{
//If you have a script on your character
if( other.GetComponent<PlayerBehaviour>() )
Application.LoadLevel("TheGiantsCastle");
//If you have a tag on your character
if( other.tag == "player" )
Application.LoadLevel("YourMamasRoom");
//If you are looking for a specific character by name
if( other..name == "player" )
Application.LoadLevel("TypicalDungeonLevel");
}