mr-crocs-adventures/tilorswift/js/module.js

import Terrain from "./Terrain.js";
import FileLoader from "../../js/FileLoader.js";
import TilorswiftEvent from "./events/TilorswiftEvent.js";
import Mouse from "./Mouse.js";

let image = new Image();
image.src = '../graphics/tileset-landscape01.jpg';
image.onload = function () {
    let loader = new FileLoader('../levels/level.json');
    let terrain = Terrain.createFromJson(loader.getContent());

    let map = document.getElementById('map');
    map.appendChild(terrain.getElement());

    let mouse = new Mouse();

    window.addEventListener(
        TilorswiftEvent.FIELD_CLICKED,
        (event) => {
            event.getField().setIndex(terrain.brushTileIndex);
        }
    );

    window.addEventListener(
        TilorswiftEvent.FIELD_ENTERED,
        (event) => {
            if (mouse.isPressedLeft) {
                event.getField().setIndex(terrain.brushTileIndex);
            }
        }
    );
};