40 lines
877 B
JavaScript
40 lines
877 B
JavaScript
"use strict";
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/**
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* Makes handling keyboard input just that little bit easier.
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*/
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class Keyboard
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{
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constructor()
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{
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/**
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* The keyCodes of the keyboard keys that are currently pressed down.
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* @type {[number]}
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*/
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this.DownKeys = [];
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document.addEventListener("keydown", this.handleKeyDown.bind(this));
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document.addEventListener("keyup", this.handleKeyUp.bind(this));
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}
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/**
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* Handles keydown events.
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* @param {KeyboardEvent} event The keyboard event to handle.
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*/
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handleKeyDown(event) {
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if(!this.DownKeys.contains(event.keyCode))
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this.DownKeys.push(event.keyCode);
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}
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/**
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* Handles keyup events.
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* @param {KeyboardEvent} event The keyboard event to handle.
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*/
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handleKeyUp(event) {
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if(this.DownKeys.indexOf(event.keyCode) !== -1)
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this.DownKeys.splice(this.DownKeys.indexOf(event.keyCode), 1);
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}
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}
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export default Keyboard;
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