Start timer with trigger

Can't make it work? Post your script and lets see if we can help.

Topic edited

You have 750+ of karma but is asking something really trivial and propose a script that makes little sense. Am I missing something here?

burn is not set anywhere, ResetTimer does not have any purpose apart from setting timer to 0 which will stop any lerping from happening. As a result, when getting inside the if statement, timer is 0, lerp is not doing.

I guess you meant to use

 timer += Time.deltaTime;

Ok so burn comes from somewhere else but let's see your Update:

 function Update() {
     timer = Time.deltaTime; // Timer is set to deltaTime 
     if(burn)    // if true
     {
         ResetTimer();  // Timer is set to 0

         // Nothing happens since the ratio is 0
         col = Color.Lerp(Color.white, Color.red, timer); 
     }
     renderer.material.color = col; // Color does not change
 }

Now you could reset timer after the lerp so that the value is applied to the Lerp. But actually the timer = deltaTime, is useless where it is if not use somewhere else.

I just realize as well that your color may not change since you are lerping from white to red with the same ratio.

Here is a review: var timer :float = 0; function Update() { if(burn)
{ timer += Time.deltaTime; renderer.material.color = Color.Lerp( renderer.material.color, Color.red, timer); } }

This code above will lerp from current color to red over 1 second, current probably being white from the start.

Add a multiplier to the timer

 timer += Time.deltaTime * 1 / speed;