CODEWITHSUNDEEP
c#unity-game-engine
Insertgenericcodingname
Insertgenericcodingname

Reputation: 1

Cannot implicitly convert type float to int. An explicit conversion exists (are you missing a cast?)

I am trying to make a zombie spawn at a random spawnpoint out of an array of spawnpoints. Using unity game engine it says "cannot implicitly convert type float to int An explicit conversion exists(are you missing a cast?)"

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

public class sown : MonoBehaviour
{
    System.Random rnd = new System.Random();
    public GameObject[] zomz = new GameObject[1];
    public Transform[] spawns = new Transform[9];
    public GameObject regzom;
    int unonumero = 0;

    void Start()
    {
        foreach (GameObject x in zomz)
        {
            zomz[unonumero] = Instantiate(regzom, spawns[Mathf.Round(Random.Range(0f, 10f))]);
            unonumero++;
        }
    }

    void Update()
    {
    }
}

Upvotes: 0

Views: 1745

Answers (2)

KingOfArrows
KingOfArrows

Reputation: 556

Mathf.Found returns a float, proof. That float is then being used as an index for spawns[]. Only ints are allowed for indexing.

void Start()
{
    foreach (GameObject x in zomz)
    {
        zomz[unonumero] = Instantiate(regzom, spawns[(int)Mathf.Round(Random.Range(0f, 10f))]);
        unonumero++;
    }
}

Edit: Marco Elizondo's answer is better. Use Mathf.RoundToInt instead.

Upvotes: 1

Marco Elizondo
Marco Elizondo

Reputation: 562

You are almost done, the error is trying to say that you are using a float instead of an int.

Array index can only be integers, in your line:

zomz[unonumero] = Instantiate(regzom, spawns[Mathf.Round(Random.Range(0f, 10f))]);

You are using Mathf.Round(Random.Range(0f, 10f)) to get the random and then round it and that is a wise choice, so you have a random float number like 2.4f rounded to 2.0f, the problem is that it still a float, not an integer.

Matfh has a cool Round method that gives you an integer, you can use this Mathf.RoundToInt(), like:

zomz[unonumero] = Instantiate(regzom, spawns[Mathf.RoundToInt(Random.Range(0f, 10f))]);

I hope its clear :)

Upvotes: 2

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