Ground Detection

Question

I'm trying to detect ground, on both platforms and the main ground, in my 2d game. So, What I've done is given all of my platforms and my main ground the tag "ground". However, I can't seem to get my IsGrounded() method to work. Can someone help me out?..

 bool IsGrounded()
     {
         foreach(GameObject groudnObj in GameObject.FindGameObjectsWithTag("ground")){
             if(Vector3.Distance(collider2D.transform.position, groudnObj.collider2D.transform.position) < 2f){
                 if(groudnObj.collider2D.transform.position.y < this.collider2D.transform.position.y){
                     return true;
                 }
             }
         }
         return false;
     }

Answer 1

Best Answer

Answer by prof · Nov 14, 2013 at 10:17 PM

For ground detection i'll recommend use linecast http://docs.unity3d.com/Documentation/ScriptReference/Physics2D.Linecast.html

Or you may attach empty gameobject with trigger collider to your character and use it as ground detector.

Here's example project https://www.assetstore.unity3d.com/#/content/11228

btw, checking all objects is a bad idea)

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Vis-Studios · Nov 15, 2013 at 05:49 AM 0

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Thank you! Linecast is what i was looking for :) The documentation on the new 2d system isn't very good yet.

Answer 2

Answer by Klaus-Eiperle · Nov 14, 2013 at 10:16 PM

Hi,

add box colliders to the payers feet.
Switch on 'Is Trigger'

add a script like this:

   using UnityEngine;
     using System.Collections;
     
     public class DetectGroundHit : MonoBehaviour {
             public PlayerController refPlayerController;
             
             void OnTriggerEnter() {
                 if (refPlayerController) {
                     refPlayerController.groundHitYN=true;
                 }
             }
             
             void OnTriggerStay() {
                 if (refPlayerController) {
                     refPlayerController.groundHitYN=true;
                 }
             }
             
             void OnTriggerExit() {
                 if (refPlayerController) {
                     refPlayerController.groundHitYN=false;
                 }
             }
     }

the script PlayerController is applied to the Player Object. This script has a public bool which is set when the player hits a ground object.
add to the platforms and main ground box colliders or mesh colliders.

Is that what you need?

All the best, Klaus

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kriptite · Jun 22, 2016 at 01:56 PM 0

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This worked splendidly for me, simple and agile if u put it on a distinct gameObject that u can move around, thanks man.

Ground Detection

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