Assets\scripts\enemytimer.cs(23, 13): error CS0029: cannot implicitly convert type 'float' to 'bool'

Question

1.00/5 (1 vote)

See more:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyTimer : MonoBehaviour
{
    public float currentTime = 0f;
    public float startingTime = 10f;
    public delegate void Enemyspawn();
    public static event Enemyspawn OnEnemyspawn;

    // Start is called before the first frame update
    void Start()
    {
        currentTime = startingTime;
    }

    // Update is called once per frame
    void Update()
    {
        currentTime -= 1 * Time.deltaTime;

        if (currentTime = 0)
        {
            OnEnemyspawn();
        }
    }
}

What I have tried:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyManager : MonoBehaviour
{

    public Transform[] m_SpawnPoints;
    public GameObject m_EnemyPrefab;

    // Start is called before the first frame update
    void Start()
    {
        SpawnNewEnemy();
    }

    void OnEnable()
    {
        EnemyTimer.OnEnemyspawn += SpawnNewEnemy;
    }


    void SpawnNewEnemy()
    {

        int randomNumber = Mathf.RoundToInt(Random.Range(0f, m_SpawnPoints.Length - 1));

        Instantiate(m_EnemyPrefab, m_SpawnPoints[randomNumber].transform.position, Quaternion.identity);


    }

}

Posted 29-Jun-23 12:46pm

Eric Taylor 2023

Updated 29-Jun-23 18:33pm

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Comments

Jo_vb.net 29-Jun-23 19:09pm

Replace
if (currentTime = 0)
with
if (currentTime == 0)

2 solutions

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Sandeep Mewara · Accepted Answer · 2023-06-29T18:33:00

If you debug, you will see the error is being raised from:

C#

void Update()
{
    currentTime -= 1 * Time.deltaTime;

    if (currentTime = 0)
    {
        OnEnemyspawn();
    }
}

This is because you have written currentTime = 0 in the if condition.

C# supports the usual logical conditions from mathematics:

Less than: a < b
Less than or equal to: a <= b
Greater than: a > b
Greater than or equal to: a >= b
Equal to a == b
Not Equal to: a != b

Refer: C# If ... Else[^]
Thus, following would work as shared in the comment by Jo_vb.net:

C#

if (currentTime == 0)

Dave Kreskowiak · Accepted Answer · 2023-06-29T15:15:00

Solution 1

In C#, an assignment uses one =, while an equality comparison uses two, ==.

Posted 29-Jun-23 15:15pm

Dave Kreskowiak