# Stroboscoop \[SOLVED\]
**URL:** https://discussions.unity.com/t/stroboscoop-solved/423555
**Category:** Scripting
**Tags:** Scripting
**Created:** [September 21, 2010, 8:35pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555 "2010-09-21T20:35:16Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@anon\_94603372](https://discussions.unity.com/u/anon_94603372)
#### Post date: [September 21, 2010, 8:35pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/1 "2010-09-21T20:35:16Z")
Hello,
I’m looking for a **working** Stroboscoop script, as I can’t seem to figure out how to do it!
Right now I have the following piece of code;
```auto
while (Input.GetKey("m")) {
light.intensity = 0;
WaitForSeconds (0.1);
light.intensity = 1;
WaitForSeconds (0.1);
yield;
}
```
Anyone know how? 🙂
Thanks in Advance.
---
### Author:  [@AkilaeTribe](https://discussions.unity.com/u/AkilaeTribe)
#### Post date: [September 21, 2010, 9:36pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/2 "2010-09-21T21:36:48Z")
> **[Unity - Scripting API: MonoBehaviour.InvokeRepeating](https://docs.unity3d.com/ScriptReference/MonoBehaviour.InvokeRepeating.html)**
> **[Unity - Scripting API: MonoBehaviour.CancelInvoke](https://docs.unity3d.com/ScriptReference/MonoBehaviour.CancelInvoke.html)**
```auto
function LightChange ()
{
light.intensity = 0.0;
WaitForSeconds (0.1);
light.intensity = 1.0;
}
```
---
### Author:  [@anon\_94603372](https://discussions.unity.com/u/anon_94603372)
#### Post date: [September 21, 2010, 9:50pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/3 "2010-09-21T21:50:27Z")
Thanks for your help!
One pity though, it doesn’t seem to do anything!
```auto
var Strobo = 0;
InvokeRepeating("LightChange", 2, 0.3);
function LightChange ()
{
light.intensity = 0.0;
WaitForSeconds (0.1);
light.intensity = 1.0;
}
function Update () {
if (Strobo == 1) {
LightChange();
}
if (Strobo == 0) {
light.intensity = 0;
}
if (Input.GetKeyDown("6")) {
if (Strobo == 1) {
Strobo = 0;
}else{
Strobo = 1;
}
}
}
```
Any idea what could be wrong with this? No errors what so ever.
---
### Author:  [@AkilaeTribe](https://discussions.unity.com/u/AkilaeTribe)
#### Post date: [September 21, 2010, 9:56pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/4 "2010-09-21T21:56:25Z")
I don’t understand what you exactly want, to be honest. Explain again, please (the wanted behavior).
---
### Author:  [@anon\_94603372](https://discussions.unity.com/u/anon_94603372)
#### Post date: [September 21, 2010, 9:58pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/5 "2010-09-21T21:58:05Z")
> [@""](#):
>
> I don’t understand what you exactly want, to be honest. Explain again, please.
I want to make a Spotlight to act as a Stroboscoop.
The white flickering (Flashing) lights which you see in disco’s or music events.
So the light should go ON and OFF very quickly to get this effect.
---
### Author:  [@cherub](https://discussions.unity.com/u/cherub)
#### Post date: [September 21, 2010, 10:03pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/6 "2010-09-21T22:03:19Z")
```auto
function Update()
{
LightChange ();
}
function LightChange ()
{
light.intensity = 0.0;
WaitForSeconds (0.1);
light.intensity = 1.0;
}
```
---
### Author:  [@anon\_94603372](https://discussions.unity.com/u/anon_94603372)
#### Post date: [September 21, 2010, 10:08pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/7 "2010-09-21T22:08:38Z")
> [@""](#):
>
> ```auto
> function Update()
> {
> LightChange ();
> }
>
> function LightChange ()
> {
> light.intensity = 0.0;
> WaitForSeconds (0.1);
> light.intensity = 1.0;
> }
>
> ```
Also doesn’t work (I’m using Unity 3 F1)
Oh dear, maybe a bug in F1?
I also tried using FixedUpdate instead of Update, but in both cases, no effect.
The light keeps solid white.
---
### Author:  [@anon\_94933261](https://discussions.unity.com/u/anon_94933261)
#### Post date: [September 21, 2010, 10:27pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/8 "2010-09-21T22:27:34Z")
does this work?
```auto
function Start () {
while (true) {
yield WaitForSeconds(0.05);
light.intensity = 0;
yield WaitForSeconds(0.05);
light.intensity = 1;
}
}
```
---
### Author:  [@anon\_94603372](https://discussions.unity.com/u/anon_94603372)
#### Post date: [September 21, 2010, 10:34pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/9 "2010-09-21T22:34:40Z")
> [@•BTM](#):
>
> does this work?
>
> ```auto
> function Start () {
> while (true) {
> yield WaitForSeconds(0.05);
> light.intensity = 0;
> yield WaitForSeconds(0.05);
> light.intensity = 1;
> }
> }
>
> ```
EDIT: Yup, this one does work, thanks alot !! :twisted:
---
### Author:  [@AkilaeTribe](https://discussions.unity.com/u/AkilaeTribe)
#### Post date: [September 21, 2010, 10:38pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/10 "2010-09-21T22:38:13Z")
```auto
private var stroboscopeOn : boolean = false;
public var durationOn : float = 0.1;
public var repeatTime : float = 2.0;
public var button : String = "o";
function Update ()
{
if (Input.GetKeyDown (button))
{
stroboscopeOn = !stroboscopeOn;
if (stroboscopeOn)
InvokeRepeating ("LightChange", 0.0, repeatTime);
else
CancelInvoke ();
}
}
function LightChange ()
{
light.intensity = 1.0;
yield new WaitForSeconds (durationOn);
light.intensity = 0.0;
}
```
Edit : double-crossed while thinking ☹
---
### Author:  [@cherub](https://discussions.unity.com/u/cherub)
#### Post date: [September 21, 2010, 10:48pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/11 "2010-09-21T22:48:15Z")
oh yeah, forgot yield in front of waitforseconds…sorry
---
### Author:  [@appels](https://discussions.unity.com/u/appels)
#### Post date: [September 21, 2010, 10:57pm UTC](https://discussions.unity.com/t/stroboscoop-solved/423555/12 "2010-09-21T22:57:46Z")
or :
```auto
function Start()
{
InvokeRepeating("LightChange", 0.0, 1.0);
}
function LightChange ()
{
if(light.intensity == 0.0)
light.intensity = 1.0;
else
light.intensity = 0.0;
}
```