How am I getting this error??

Questions & Answers
1

The error is;

" Operator ‘+’ cannot be used with a left hand side of type ‘float’ and a right hand side of type ‘Object’."

the code in question is;

#pragma strict

var coolTimeMax:			float 		= 8.0f;
var isUseSkill:				boolean 	= false;
var buttonClickTrue:		AudioClip;
var buttonClickFalse:		AudioClip;

private var timer:			float       = 1.0f;
private var coolTime:		float 		= 0.0f;
private var silder:			UISlider 	= null;
private var getCam:			GameObject;

private var soundRate: 		float 		= 0.0;					// variable to hold sound rate
private var soundDelay: 	float 		= 0.0;

function Start () 
{
	silder = GetComponent(UISlider);
	getCam = GameObject.FindGameObjectWithTag("MainCamera");
}

function Update ()
{
	silder.sliderValue = timer;
	
	if (UICamera.hoveredObject != null && UICamera.hoveredObject.name == ("btn_Farmer") && Input.GetMouseButton(0) && !isUseSkill && timer == 1)
	{
		PlaySound ( buttonClickTrue, 0 );
		getCam.GetComponent(InGameGUI).SetBuildChoice ( gameObject );
	}
	if (isUseSkill) 
	{
		StartTimer ();
		isUseSkill = false;
	}
}

function StartTimer ()
{
	var t: float = 0.0f;
		
	while (t < 1)
	{
		t += Time.deltaTime / coolTimeMax;
		timer = Mathf.Lerp (0, 1, t);
		yield;
	}
}

function PlaySound ( soundName, soundDelay )						// calls to play sound based on sound file name attached to object
{
	if ( !audio.isPlaying && Time.time > soundRate )				// sets sound rate
	{
		soundRate = Time.time + soundDelay;							// option to add a delay to the sound before it starts playing
		audio.clip = soundName;
		audio.Play ();
		yield WaitForSeconds ( audio.clip.length );
	}	
}

the exact line this error is pointing too is;

soundRate = Time.time + soundDelay;

This makes no sense! last I soundRate is a float, Time.time is a float, and soundDelay is a float! Where does it get this “Object” type from?!

2

It makes complete sense since you haven’t defined the types for the variables in your PlaySound function. You have two soundDelay variables; a global one and a local one in the PlaySound function.