import { MathEx } from "../math/MathEx" ; namespace Private { export const deltaTimeCap = 1 / 10 ; export let previousTime = performance . now ( ) ; export let time = 0 ; export let deltaTime = 0 ; export let smoothDeltaTime = 0 ; export let frameTimer = 0 ; export let frameCount = 0 ; export let fps = 0 ; export let currentFrame = 0 ; } hidden export namespace TimeInternal { export function updateDeltaTime ( ) { const time = performance . now ( ) ; const deltaTime = Math . min ( ( time - Private . previousTime ) / 1000.0 , Private . deltaTimeCap ) ; Private . smoothDeltaTime = MathEx . lerp ( Private . deltaTime , deltaTime , .5 ) ; Private . deltaTime = deltaTime ; Private . time += deltaTime ; Private . previousTime = time ; Private . frameTimer += Private . deltaTime ; Private . frameCount ++ ; if ( Private . frameTimer >= 1 ) { Private . fps = Private . frameCount / Private . frameTimer ; Private . frameCount = 0 ; Private . frameTimer = 0 ; } } export function resetCurrentFrame ( ) { Private . currentFrame = 0 ; } export function incrementCurrentFrame ( ) { ++ Private . currentFrame ; } } export class Time { static get time ( ) { return Private . time ; } static get deltaTime ( ) { return Private . deltaTime ; } static get smoothDeltaTime ( ) { return Private . smoothDeltaTime ; } static get fps ( ) { return Private . fps ; } static get currentFrame ( ) { return Private . currentFrame ; } }