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import _ from 'lodash';
export enum Direction {
North,
East,
South,
West
}
export interface Attachment {
attachTo: Tile;
edge: Direction;
tile: Tile;
orientation: number;
}
export default class Tile {
center: string;
private _edges: string;
shield?: boolean;
private _orientation: number; // Clockwise rotation of a tile
position: {
x: number;
y: number;
}
public constructor(
center: string,
edges: string,
shield = false,
position = { x: 0, y: 0 },
orientation = 0
) {
this.center = center;
this._edges = edges;
this.shield = shield;
this.position = position;
this.orientation = orientation;
}
public set orientation(orientation) {
this._orientation = ((orientation % 4) + 4) % 4;
}
public get orientation() {
return this._orientation;
}
public get edges() {
return _.repeat(this._edges, 2).slice(4 - this.orientation, 8 - this.orientation);
}
print() {
console.log( ` ${this.edges[Direction.North]} \n${this.edges[Direction.West]}${this.center}${this.edges[Direction.East]}\n ${this.edges[Direction.South]} `);
}
getAttachments(tile: Tile): Attachment[] {
return _.flatten(_.map(this.edges, (feature, edge) => {
const oppositeEdge = (edge + 2) % 4;
return _
.map(tile.edges, (candidate, index) => candidate === feature ? index : -1)
.filter(index => index !== -1)
.map(index => ({
edge,
orientation: (((oppositeEdge - index) % 4) + 4) % 4,
attachTo: this,
tile,
}));
}));
}
}
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