30 lines
759 B
TypeScript
30 lines
759 B
TypeScript
import { Direction } from "../constants/Direction";
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import { Border } from "./Border";
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import { Cell } from "./Cell";
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import { Exit } from "./Exit";
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import { Node } from "./Node";
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export class ExternalNode extends Node {
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public readonly direction: Direction;
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private border?: Border;
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constructor(cell: Cell, direction: Direction) {
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super(cell);
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this.direction = direction;
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}
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public linkToNode(other: ExternalNode | Exit) {
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this.border = new Border(this, other);
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if (other instanceof ExternalNode) {
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other.border = this.border;
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}
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}
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public traverseBorder(): ExternalNode | Exit {
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if (!this.border) {
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throw Error(`Missing border for node`);
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}
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return (this.border as Border).traverseFrom(this);
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}
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}
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