forked from arne/asdf-games
78 lines
1.2 KiB
JavaScript
78 lines
1.2 KiB
JavaScript
class KeyControls {
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constructor() {
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this.keys = {};
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// Bind event handlers
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document.addEventListener("keydown", e => {
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if ([37, 38, 39, 40].indexOf(e.which) >= 0) {
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e.preventDefault();
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}
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this.keys[e.which] = true;
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}, false);
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document.addEventListener("keyup", e => {
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this.keys[e.which] = false;
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}, false);
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}
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get action() {
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// Spacebar
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return this.keys[32];
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}
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get ctrl() {
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// Control
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return this.keys[17];
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}
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get shift() {
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// Shift
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return this.keys[16];
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}
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get escape() {
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// Escape
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return this.keys[27];
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}
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get x() {
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// Arrow Left or A (WASD)
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if (this.keys[37] || this.keys[65]) {
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return -1;
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}
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// Arrow Right or D (WASD)
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if (this.keys[39] || this.keys[68]) {
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return 1;
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}
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return 0;
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}
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get y() {
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// Arrow Up or W (WASD)
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if (this.keys[38] || this.keys[87]) {
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return -1;
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}
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// Arrow Down or S (WASD)
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if (this.keys[40] || this.keys[83]) {
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return 1;
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}
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return 0;
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}
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key(key, value) {
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if (value !== undefined) {
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this.keys[key] = value;
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}
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return this.keys[key];
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}
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reset() {
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for (let key in this.keys) {
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this.keys[key] = false;
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}
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}
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}
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module.exports = KeyControls;
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