Converting Float to Bool

Question

When I try to do this script it doesn't work but in my mind it seems that it should work it tells me that it cant convert a float into a bool. Please help. This is my script

 using UnityEngine;
 using System.Collections;
 
 public class PlayerMovement : MonoBehaviour {
 
     public bool isWalking = false;
     public float playerSpeed = 5.0f;
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
         if(Input.GetAxis("Horizontal") == true) {
             transform.Translate (Vector3.right * Input.GetAxis ("Horizontal") * playerSpeed * Time.deltaTime);
             isWalking = true;
         }
         else {
             isWalking = false;
         }
     }
 }

Answer 1

Answer by rutter · Jun 26, 2014 at 11:35 PM

GetAxis returns a numeric value, usually between -1 and 1. C# doesn't treat floats as booleans, which is why you're getting that error.

Perhaps you mean to check if it's equal to zero?

 if (Input.GetAxis("Horizontal") != 0f)

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Answer 2

Answer by danielmahon · Aug 07, 2020 at 03:13 PM

Recently needed to handle this with the new Input System. To solve I added an extension method to "float" that will return the float as a bool.

 // Extension method
 public static bool AsBool(this float value) {
     return Mathf.Approximately(Mathf.Min(value, 1), 1);
 }

 // Usage example (holding shift key)
 bool _modifySelection = _pointerSelectModifier.action.ReadValue<float>().AsBool();
 // will return "true" if button is currently pressed, the value is >= 1

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Converting Float to Bool

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