import * as world from "/js/world.mjs";
import { get_player_box } from "/js/player.mjs";
import * as random from "/js/utils/random.mjs";



// lots of this code is very hacky temporary for testing things out & getting started with tile updates.

export function tick (box, delta_time) {
	world.for_each_tile(box, (x, y, tile) => {
		if (tile_tickers.has(tile.type)) {
			tile_tickers.get(tile.type)(box, x, y, delta_time);
		}
	});
}

const tile_tickers = new Map();

const dirs = [
	[ -1, 0 ],
	[ 1, 0 ],
	[ 0, -1 ],
	[ 0, 1 ],
];

// this might become terrible for performance eventually.
tile_tickers.set("box", (box, x, y, delta_time) => {
	tick(world.get_tile(box, x, y).box, delta_time);
});

tile_tickers.set("grass", (box, x, y, delta_time) => {
	const tile = world.get_tile(box, x, y);
	if (Math.random() > 0.8 ** delta_time) {
		const dir = random.item(dirs);
		const spaces = random.shuffle(dirs)
			.map(([d_x, d_y]) => [x + d_x, y + d_y]);

		for (const [new_x, new_y] of spaces) {
			if (world.get_tile(box, new_x, new_y).type === "empty") {
				world.set_tile(box, new_x, new_y, {
					type: "grass",
				});
				break;
			}
		}
	};
});