[Bug?] About WaitForSeconds()

Unity Engine
1

Hello guys, I want to do one simple thing in my game: the player could do sth after the he/she has clicked the right mouse button for 5 seconds. I wrote this in C#, but I failed. Then I wrote the same thing in js, it worked. I don’t know why, so I post the topic here for help, could anybody give me the reasons for my failing in C#? :smile:

// C# Code
using UnityEngine;
using System.Collections;

public class CSharp : MonoBehaviour
{
    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButtonDown(1))
        {
            print("CS:Left mouse button down!");
            print("CS:SomeFunc()");
            SomeFunc();
            print("CS:SomeFunc() End");
        }
    }

    IEnumerator SomeFunc()
    {
        print("CS:Wait for 5s...");
        yield return new WaitForSeconds(5);
        print("CS:smile:o sth after 5s...");
    }
}

// Js code to do the same thing
// Update is called once per frame
function Update()
{
    if (Input.GetMouseButtonDown(1))
    {
        print("JS:Left mouse button down!");
        print("JS:SomeFunc()");
        SomeFunc();
        print("JS:SomeFunc() End");
    }
}

function SomeFunc()
{
    print("JS:Wait for 5s...");
    yield WaitForSeconds(5);
    print("JS:smile:o sth after 5s...");
}

Here are the results:

JS:Left mouse button down!
JS:SomeFunc()
JS:Wait for 5s…
JS:SomeFunc() End
CS:Left mouse button down!
CS:SomeFunc()
CS:SomeFunc() End
JS:smile:o sth after 5s…

2

You have to use StartCoroutine() in C#.

–Eric

3

Thank u, I have solved the problem…