32 lines
848 B
JavaScript
32 lines
848 B
JavaScript
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game.input = (() => {
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"use strict";
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const Keyboard = () => {
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const keys = {};
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const handlers = {};
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const keyPress = (event) => {
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keys[event.key] = event.timeStamp;
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};
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const keyRelease = (event) => {
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delete keys[event.key];
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};
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const registerCommand = (key, handler) => {
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handlers[key] = handler;
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};
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const unregisterCommand = (key) => {
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delete handlers[key];
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}
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const update = (elapsedTime) => {
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for (let key in keys) {
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if (keys.hasOwnProperty(key)) {
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if (handlers[key]) {
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handlers[key](elapsedTime);
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}
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}
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}
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};
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window.addEventListener("keydown", keyPress);
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window.addEventListener("keyup", keyRelease);
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return {keys, handlers, registerCommand, unregisterCommand, update};
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}
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return { Keyboard };
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})();
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