Calculate distance between player and floor

Question

I'm making a game in which the player is free falling. I want the player to know how much time they have left until they hit the floor. Currently I'm calculating the distance between the player and the floor as in the script below. This doesn't give me the actual distance between the player and the floor though as the calculation for "floorDist" continues even whilst the player is on a static ledge above the ground, or stood on the ground. Any advice on how to better calculate this distance would be appreciated.

     public GameObject floor;
     public float floorDist;
     
     void Awake () 
     {
         floorDist = gameObject.transform.position.y;
 
     }
     
     void Update()
     {
         FloorMeasure();
         floorDist = gameObject.transform.position.y;
     }
     
     void FloorMeasure()
     {
         floorDist = gameObject.transform.position.y - floor.transform.position.y;
     }

Answer 1

Best Answer

Answer by Linus · Feb 09, 2014 at 04:00 PM

You can use linecast https://docs.unity3d.com/Documentation/ScriptReference/Physics.Linecast.html

Then access the distance of the hit https://docs.unity3d.com/Documentation/ScriptReference/RaycastHit.html

Look up on what code is used to see if a character can jump. you can use much of the same code.

http://answers.unity3d.com/questions/196381/how-do-i-check-if-my-rigidbody-player-is-grounded.html

Add comment · Show 1 · Share

MattSawrey · Feb 09, 2014 at 08:07 PM 0

Share

Thanks. I just started learning C sharp last week so I appreciate the help. I'm trying to use a linecast to do it now. Here's what I've got:

     public float floorDist;
 
     public GameObject characterPos;
     public GameObject floorPos;
 
     Vector3 posChar;
     Vector3 posFloor;
 
 
     void Awake () 
     {
         posChar = characterPos.transform.position;
         posFloor = floorPos.transform.position;
     }
     
     void Update()
     {
         Floor$$anonymous$$easure();
         Debug.Log("Distance to Floor = "+floorDist);
     }
     
     void Floor$$anonymous$$easure()
     {
 
         RaycastHit hit;
 
         if (Physics.Linecast(posChar, posFloor, out hit))
         {
             floorDist = hit.distance;
         }
     }

It doesn't seem to be returning the distance between the player and the ground. I'm not sure why. I've checked the gameobjects I've assigned to "characterPos" and "floorPos" and they're correct. Any ideas?

Answer 2

Answer by Vardan Meliksetyan · Feb 09, 2014 at 04:01 PM

Hi, you must use Raycast, it is simple and usefull !

Add comment · Share

Calculate distance between player and floor

2 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions