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import _ from 'lodash';
import Debug, { Debugger } from 'debug';
const debug = Debug('cell');
export enum Direction {
North,
East,
South,
West
}
export enum Feature {
Empty = " ",
Road = "R",
Town = "T",
River = "I",
Church = "C",
}
export interface Attachment {
attachTo: Tile;
side: Direction;
cell: Tile;
rotation: number; // Clockwise rotation of a cell
}
export default class Tile {
center: Feature;
private sides: [Feature, Feature, Feature, Feature];
neighbors: [Tile, Tile, Tile, Tile];
private orientation: number // amount of 90-degree counter-clockwise rotations from original orientation
shield?: boolean;
debug: Debugger;
public constructor(center: Feature, sides: [Feature, Feature, Feature, Feature], orientation = 0, shield = false) {
this.center = center;
this.sides = sides;
this.shield = shield;
this.orientation = orientation;
}
print() {
console.log( ` ${this.getSide(Direction.North)} \n${this.getSide(Direction.West)}${this.center}${this.getSide(Direction.East)}\n ${this.getSide(Direction.South)} `);
}
getSide(direction: Direction) {
return this.sides[(((this.orientation + direction) % 4) + 4) % 4];
}
rotate(rotation = 1) {
debug(`Rotating ${rotation} clockwise`)
this.orientation = this.orientation - rotation;
}
getAttachments(cell: Tile) {
return _.flatten([0, 1, 2, 3].map(side => {
const item = this.getSide(side);
return [0, 1, 2, 3]
.filter(rotation => cell.getSide(side - rotation + 2) === item)
.map(rotation => ({
cell,
rotation,
side,
attachTo: this as Tile
}))
}));
}
attach(cell: Tile, side: Direction) {
if (this.neighbors[side]) throw new Error('There is something already attached to this side!');
this.neighbors[side] = cell;
}
}
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