How to identify the character as out of the scene?

Unity Engine
1

I am thinking about this general problem that games may need to realize, and how it could be implemented in Unity: how do you identify the character as out of the scene?

In many situation we may want this, like if you want the player’s hp goes to 0 when the character accidentally falls out of the scene through a notch you deliberately design, you probably need to know how to judge the player as not in the scene in the first place. Or, if you simply want the player to go to next level when the character walks out of the scene, you may need to know the standard for this judgement too.

I think this is a pretty general issue that many coders and designers will encounter in making games, I am just not sure how to do this with Unity, like, which part of the API would help? Thank you in advance for any suggestions!

2

There’s probably a better way to do it, but I’ve just done something like this:

screenWidth = (Camera.main.orthographicSize * Screen.width / Screen.height) * 2;
screenHeight = Camera.main.orthographicSize * 2;

And then to detect if it’s off screen to the left for example, I’d do:

if (transform.position.x < Camera.main.transform.position.x - screenWidth/2)
{
     offScreen = true;
}
1 Like
3

it also depends if the camera is following the player or is fixed in each scene. Using colliders with triggers is how I detect if the player falls into something that kills them or needs to activate the next scene, as well as just using code like “if health<=0 then do something”