Okay here is my simple script to detect what plane the character is walking on. The script works and detects the change in plane but does not update, how can I get it to constantly check using on triggerenter, I don't want to put this in the Update function.

function OnTriggerEnter (col : Collider) {
    if (col.tag == "wood")
    {    print("wood");
    }
    if (col.tag  == "forrest")
    {    print("forrest");
    }        }

Thanks

Okay an update now.

> function OnTriggerStay (col :
> Collider) { 
> 
>      if (!col.tag) return;     
> 
>      var floorType : String = col.tag;
> 
>      switch(floorType) {
>          case "wood":
>           if ( Input.GetButtonDown( "Horizontal" ) || Input.GetButtonDown(
> "Vertical" ) ) {
>                 // play wood floor footsteps.
>           audio.clip = (footStepsWood);
>           audio.Play();
>           }else if ( !Input.GetButton( "Horizontal" ) && !Input.GetButton(
> "Vertical" ) && audio.isPlaying ){
>           audio.Pause(); 
>           }
>               break;
>          case "forrest":
>           if ( Input.GetButtonDown( "Horizontal" ) || Input.GetButtonDown(
> "Vertical" ) ) {
>           // play forrest footsteps
>           audio.clip = (footStepsForrest);
>           audio.Play();
>           }else if ( !Input.GetButton( "Horizontal" ) && !Input.GetButton(
> "Vertical" ) && audio.isPlaying ){
>           audio.Pause(); 
>           }
>               break;
>          default: //if the tag is not a floor type
>               break;
>      } }

This script works it changes the sound depending on the area but i have to press one of the input buttons to get it to work. Cant the sound file change on the enter of the triger? so i dont have to press down a button again?

Thanks