How to calculate the length of platform/object?

Unity Engine
1

Hi,

I’m new to Unity and after watching and reading some tutorials I’m now trying to make a simple 2D platformer kind of game. In the said game both enemies and player can jump to different platforms and traverse it like the old SnowBros game.

The problem I’m facing is related to programming the enemy movement. In my game there would be several types of enemies but generally for now there are two types, one that can jump from the platform and one that only walks upto the length of the platform, wait for 1 second then flip and walk backwards; meaning they don’t get off the platform. Now this is an issue I’m having trouble with. I can’t seem to find a way to calculate the length of the underlying current platform. I thought of using the collider.bound.min.x and max.x to come around the problem but the issue is I can’t seem to find a simple way to reach the current platform’s collider without fetching the script and then going through it.

Since, there would be many platforms of many different sizes and each platform is made up of a prefab of other platforms, it just doesn’t seem like a workable solution to use the platform script and then traverse through it.

Any ideas?

2

The method that i use is like this :-
Suppose we have a box collider ,
So if player enters the collider , which is obvious he/she will store length in a var

void OnCollisionEnter2D(Collision2D collision)
{
length =(BoxCollider2D)collision.collider.size.x *
collider.transform.localScale.x;
}

Then you can use this length variable as you wish.