48 lines
1 KiB
JavaScript
48 lines
1 KiB
JavaScript
import Module from './module.mjs';
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import Body from './body.mjs';
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import * as world from './index.mjs';
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export default class Ship extends Body {
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constructor(x, y) {
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super(x, y, 0);
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this.com = [0, 0];
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this.modules = new Set();
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}
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tick() {
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this.tickMotion();
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this.tickGravity(world.celestials);
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this.resolveCollisions();
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}
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addModule(x, y, properties, options) {
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let module = new Module(x, y, {...properties, ...options});
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this.modules.add(module);
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this.refreshShape();
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}
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deleteModule(module) {
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this.modules.delete(module);
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this.refreshShape();
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}
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refreshShape() {
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let points = [];
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this.modules.forEach(m => points.push([m.x, m.y, m.mass]));
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this.mass = points.reduce((a, [,,b]) => a + b, 0);
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this.com = points.reduce(([ax, ay], b) =>
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[ax + b.x * b.mass, ay + b.y * b.mass], [0, 0])
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.map(x => x / this.mass);
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}
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resolveCollisions() {
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world.celestials.forEach(c => {
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let dis = this.distanceTo(c);
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if (dis < c.radius) {
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this.approach(c, dis - c.radius);
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this.halt();
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}
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})
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}
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}
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