Need help writing an if statement

I am making a game where lava rises and if you touch it you die.

The lava already has a script where it slowly rises, but because of this, it can't have a collider (it passes through objects).

My solution was to make a script where if the player's y position was equal to or less that the lava's y position, the scene would reload.

Unfortunately, I am a complete beginner and I don't know how to go about it.

I was able to make the two variables to store the positions of the player and the lava, but I don't know how to write the "if" statement to check if the player fell to or below the lava's position.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class death : MonoBehaviour
6. {
7.    
8.     public Transform playerTransform;
9.     public Transform thisTransform;
10.    
11.    
12.     // Start is called before the first frame update
13.     void Start()
14.     {
15.        
16.     }
17.  
18.     // Update is called once per frame
19.     void Update()
20.     {
21.      
22.     }
23. }
24.  

 

Hey,
first of all, why cant you have a collider? The lava changing its position shouldnt matter.

Anyways, first you calculate the difference in y-position:

Code (CSharp):

1. float distanceLavaPlayer = lavaTransform.position.y - playerTransform.position.y

So now, if the distanceLavaPlayer is above 0, this means the player is below lava.
Then you want the player to take damage.

Code (CSharp):

1. if(distanceLavaPlayer >= 0){
2.     // make the player take damage
3. }

Do the above in Update().

I would highly recommend learning some basic scripting tho. Will save you more time than you will lose on it. Sebastian Lague did a great series on it on youtube.

 

You are a life saver! Thanks for taking the time to help out a beginner. I'll be sure to check out that video series.