excalibur
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Excalibur.js is a simple JavaScript game engine with TypeScript bindings for making 2D games in HTML5 Canvas. Our mission is to make web game development as simple as possible.
50 lines (49 loc) • 1.41 kB
TypeScript
import { Random } from './Random';
/**
* Two PI constant
*/
export declare const TwoPI: number;
/**
* Returns the fractional part of a number
* @param x
*/
export declare function frac(x: number): number;
/**
* Returns the sign of a number, if 0 returns 0
*/
export declare function sign(val: number): number;
/**
* Clamps a value between a min and max inclusive
*/
export declare function clamp(val: number, min: number, max: number): number;
/**
* Approximately equals
*/
export declare function approximatelyEqual(val1: number, val2: number, tolerance: number): boolean;
/**
* Convert an angle to be the equivalent in the range [0, 2PI)
*/
export declare function canonicalizeAngle(angle: number): number;
/**
* Convert radians to degrees
*/
export declare function toDegrees(radians: number): number;
/**
* Convert degrees to radians
*/
export declare function toRadians(degrees: number): number;
/**
* Generate a range of numbers
* For example: range(0, 5) -> [0, 1, 2, 3, 4, 5]
* @param from inclusive
* @param to inclusive
*/
export declare const range: (from: number, to: number) => number[];
/**
* Find a random floating point number in range
*/
export declare function randomInRange(min: number, max: number, random?: Random): number;
/**
* Find a random integer in a range
*/
export declare function randomIntInRange(min: number, max: number, random?: Random): number;