smartgame/js/entities/BrokenPlatform.js

import Entity from "../Entity.js";
import Texture from "../Texture.js";
import Tile from "../Tile.js";
import Shaker from "../Shaker.js";
import assets from "../assets.js";

import TPlatform from "../traits/TPlatform.js";
import TCollider from "../traits/TCollider.js";
import TPhysics from "../traits/TPhysics.js";

export default class BrokenPlatform extends Entity {
	constructor(level, width = 5) {
		super(level, "platform");

		this.bounds.size.set(width, 0.5);
		this.addTrait(new TCollider(this));
		this.addTrait(new TPlatform(this));
		this.addTrait(new TPhysics(this));

		this.texture = new Texture(assets.tiles,
			Tile.createLine(this.bounds.size.x, "broken-platform"));

		this.shaker = new Shaker();
		this.shake = 0;
		this.shakeAccel = 14;
		this.shaking = false;
		this.floating = true;
		this.reliableTime = 1;
		this.resetTime = 4;
	}

	init() {
		this.initialPos = this.bounds.pos.clone();
	}

	reset() {
		this.shake = 0;
		this.shaking = false;
		this.floating = true;
		this.t.physics.velocity.set(0, 0);
		this.bounds.pos.set(this.initialPos.x, this.initialPos.y);
	}

	startShake() {
		this.shake = 0;
		this.shaking = true

		setTimeout(() => {
			this.floating = false;
			this.shaking = false;

			setTimeout(() => {
				this.reset();
			}, this.resetTime * 1000);
		}, this.reliableTime * 1000);
	}

	update(dt) {
		if (!this.shaking && !this.falling) {
			this.t.collider.entities.forEach(e => {
				let fall =
					e.has("physics") &&
					e.bounds.intersectSide(this.bounds) === "top";

				if (fall) {
					this.startShake();
				}
			});
		}

		if (this.floating)
			this.t.physics.velocity.y -= this.t.physics.gravity * dt;
		if (this.shaking) {
			this.shaker.shake(this.shake);
			this.shake += this.shakeAccel * dt;
		}

		this.shaker.update(dt);
	}

	draw(ctx) {
		this.texture.draw(
			ctx,
			this.bounds.pos.pixelX + this.shaker.vec.pixelX,
			this.bounds.pos.pixelY + this.shaker.vec.pixelY);
	}
}