108 lines
3.1 KiB
TypeScript
108 lines
3.1 KiB
TypeScript
import { Layer } from './layer.js';
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import { Mask } from './mask.js';
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import { Tile } from './tile.js';
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import { TileFactory } from './tile_factory.js';
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type Point = [number, number]
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export class Grid {
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prnt: HTMLElement;
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width: number;
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height: number;
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layers: Map<string, Layer> = new Map<string, Layer>();
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masks: Map<string, Mask> = new Map<string, Mask>();
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constructor(prnt: HTMLElement, width: number, height: number, tileset: string, layers: string[], masks: string[]) {
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this.prnt = prnt;
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this.width = width;
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this.height = height;
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this.prnt.style.display = 'grid';
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this.prnt.style.gridTemplateColumns = `repeat(${this.width}, 1fr)`;
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this.prnt.style.gridTemplateRows = `repeat(${this.height}, 1fr)`;
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this.prnt.style.backgroundImage = `url("images/${tileset}/land.svg")`;
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for (let i = 0; i <= layers.length; i++) {
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const name = layers[i];
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this.layers.set(name, new Layer(i * this.height, tileset));
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}
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for (const name of masks) {
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this.masks.set(name, new Mask(this.width, this.height));
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}
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}
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add_tile(tile_factory: TileFactory, x: number, y: number): Tile {
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const tile = this.layers.get(tile_factory.layer_name)!.add_tile(tile_factory, y);
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// Grids are 1-indexed
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tile.elem.style.gridColumnStart = `${x + 1}`;
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tile.elem.style.gridRowStart = `${y + 1}`;
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this.prnt.appendChild(tile.elem);
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for (const [name, mask] of tile.masks) {
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this.masks.get(name)!.update(x, y, mask);
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}
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return tile;
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}
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add_debug_tile(x: number, y: number, color: string) {
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const div = document.createElement('div');
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this.prnt.appendChild(div);
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div.style.gridColumnStart = `${x + 1}`;
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div.style.gridRowStart = `${y + 1}`;
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div.style.gridColumnEnd = 'span 1';
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div.style.gridRowEnd = 'span 1';
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div.style.backgroundColor = color;
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div.style.opacity = '0.3';
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div.style.zIndex = '1000000';
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}
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get_path(mask_name: string, src: Point, dst: Point): Point[] {
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const mask = this.masks.get(mask_name)!;
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const next = [];
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for (let x = 0; x < this.width; x++) {
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next.push(Array(this.height).fill(undefined));
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}
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// BFS
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const queue: Point[] = [dst];
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while (queue.length) {
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const point = queue.shift()!;
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// Horizontal / vertical has to come before diagonal
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for (const [dx, dy] of [[-1,0], [1,0], [0,-1], [0,1], [-1,-1], [-1,1], [1,-1], [1,1]]) {
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const check: Point = [point[0] + dx, point[1] + dy];
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if (next[check[0]][check[1]]) {
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// Already visited
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continue;
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}
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if (!mask.mask[check[0]][check[1]]) {
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// Not allowed
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continue;
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}
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next[check[0]][check[1]] = point;
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if (check[0] == src[0] && check[1] == src[1]) {
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const path: Point[] = [];
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let cur = src;
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while (cur[0] != dst[0] || cur[1] != dst[1]) {
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path.push(cur);
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cur = next[cur[0]][cur[1]];
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}
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path.push(dst);
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return path;
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}
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queue.push(check);
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}
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}
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// No valid path
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return [];
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}
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}
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