37 lines
719 B
JavaScript
37 lines
719 B
JavaScript
class DirectionInput {
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constructor() {
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this.heldDirections = [];
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this.map = {
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"ArrowUp": "up",
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"KeyW": "up",
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"ArrowDown": "down",
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"KeyS": "down",
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"ArrowLeft": "left",
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"KeyA": "left",
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"ArrowRight": "right",
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"KeyD": "right",
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}
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}
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get direction() {
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return this.heldDirections[0];
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}
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init() {
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document.addEventListener("keydown", e => {
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const dir = this.map[e.code];
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if (dir && this.heldDirections.indexOf(dir) === -1) {
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this.heldDirections.unshift(dir);
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}
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});
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document.addEventListener("keyup", e => {
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const dir = this.map[e.code];
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const index = this.heldDirections.indexOf(dir);
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if (index > -1) {
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this.heldDirections.splice(index, 1);
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}
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});
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}
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} |