78 lines
1.5 KiB
JavaScript
78 lines
1.5 KiB
JavaScript
import { Game } from "./Game.js";
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import { Point } from "./Point.js";
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class Ball
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{
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/**
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*
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* @param {Game} game
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* @param {Point} position
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* @param {Number} angle
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* @param {Number} speed
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* @param {Number} size
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*/
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constructor(game, size, position, angle, speed)
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{
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/**
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* @type {Game}
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*/
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this.game = game;
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/**
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* @type {Point}
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*/
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this.position = position === undefined ? new Point() : position;
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/**
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* @type {Number}
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*/
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this.size = size;
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/**
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* @type {Number}
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*/
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this.angle = angle;
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/**
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* @type {Number}
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*/
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this.speed = speed;
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}
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/**
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*
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* @param {CanvasRenderingContext2D} ctx
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*/
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draw(ctx)
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{
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ctx.rect(this.position.x - this.size / 2, this.position.y - this.size / 2, this.size, this.size);
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}
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/**
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*
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* @param {CanvasRenderingContext2D} ctx
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*/
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render(ctx)
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{
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let distance = this.speed * (this.game.time.deltaTime() / 1000)
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this.position.x = this.position.x + distance * Math.cos(this.angle);
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this.position.y = this.position.y - distance * Math.sin(this.angle);
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this.draw(ctx);
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}
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from_json (data)
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{
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this.position = this.position.from_json(data.position);
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this.size = data.size;
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this.angle = data.angle;
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this.speed = data.speed;
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return this
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}
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}
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export { Ball }
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