koobas.hobune.stream
How do I fade a light point?
Hi,
I got a lightpoint with the following script attached to it. When I press the Z key, the light will turn on/off. But how do I get it to fade on/off as well? I can't seem to get this to work.
Script, which is attached to the light.
private var lanternOn = false;
var fadeFrom = 0.0;
var fadeTo = 4.0;
var fadeRate = 10;
light.intensity = 0;
function Update(){
if(Input.GetKeyDown("z")){
if(lanternOn){
//light.intensity = 0;
fadeFrom = 4.0;
fadeTo = 0.0;
light.intensity = Mathf.Lerp(fadeFrom,fadeTo,fadeRate);
lanternOn = false;
}else{
//light.intensity = 4;
fadeFrom = 0.0;
fadeTo = 4.0;
light.intensity = Mathf.Lerp(fadeFrom,fadeTo,fadeRate);
lanternOn = true;
}
}
}
here i made this script and it works. hope it helps
function Update(){
if(Input.GetButtonDown("f")){
gameObject.light.intensity += 1;
}
if(Input.GetButtonDown("c")){
gameObject.light.intensity -= 1;
}
}
Thank you for your input, but I think you misunderstood my post. With your script I can adjust the intensity. However, I am asking for a way to FADE lightning. See it as a lantern you can hold. When you hold the lantern, I don't want the light to just pop up, but I want it to fade it.
There is a nice example of how to use coroutines for this (and many other tasks) here on the Unity wiki
Hi andeeeee. On the description it says: "Fade GUITextures or anything that has a material (including GUIText objects) at any time with these simple coroutines that can be called from anywhere." I guess that won't work on a light point?
It was more as an illustration of the technique, actually, but I guess I should have been clearer. I've answered again with the exact code you need.
Here is a function that will fade a light over time. Use values from 0.0 to 1.0 to fade the light up and 0.0 to 1.0 to fade it down.
function FadeLight(l: Light, fadeStart: float, fadeEnd: float, fadeTime: float) {
var t = 0.0;
while (t < fadeTime) {
t += Time.deltaTime;
l.intensity = Mathf.Lerp(fadeStart, fadeEnd, t / fadeTime);
yield;
}
}
