Time.timeAsDouble

Description

The double precision time at the beginning of this frame (Read Only). This is the time in seconds since the start of the game.

Time.timeAsDouble is the amount of time in seconds that the application has been running for. It is read-only.

This is the double precision version of Time.time. It offers more precision than a float or single value, particularly over extended periods of real-world time. In most cases, prefer Time.timeAsDouble over Time.time for greater precision.

The application receives the current Time.timeAsDouble at the beginning of each frame, with the value increasing per frame. A timeAsDouble call per frame receives the same value. When called from FixedUpdate it returns the Time.fixedTimeAsDouble property.

You can use Time.timeAsDouble for timestamping and measuring elapsed durations relative to the start of the application. For duration of the current frame and related per-frame accumulation or simulation steps, use Time.deltaTime instead.

The value of Time.timeAsDouble is undefined during Awake messages and starts after all messages are finished. Time.timeAsDouble does not update if the Editor is paused. For a time value unaffected by pausing, refer to Time.realtimeSinceStartupAsDouble.

//If the Fire1 button is pressed, a projectile
//will be Instantiated every 0.5 seconds.

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour
{
    public GameObject projectile;
    public float fireRate = 0.5f;
    private double nextFire = 0.0f;

    void Update()
    {
        if (Input.GetButton("Fire1") && Time.timeAsDouble > nextFire)
        {
            nextFire = Time.timeAsDouble + fireRate;
            Instantiate(projectile, transform.position, transform.rotation);
        }
    }
}