75 lines
1.5 KiB
JavaScript
75 lines
1.5 KiB
JavaScript
import {Composite, Bodies, Body as MatterBody} from 'matter-js';
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import {Vector} from '@avocado/math';
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import {ShapeList, PolygonShape, RectangleShape} from '@avocado/physics';
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import {AbstractBody} from '../abstract/body';
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import { Rectangle } from '../../math';
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export class Body extends AbstractBody {
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constructor(shape) {
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super(shape);
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this.matterBody = this.constructor.bodyFromShape(shape);
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}
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applyForce(force) {
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MatterBody.applyForce(
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this.matterBody,
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this.matterBody.position,
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{
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x: force[0],
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y: force[1],
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}
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);
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}
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applyImpulse(impulse, elapsed) {
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impulse = Vector.scale(impulse, elapsed);
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MatterBody.translate(this.matterBody, {
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x: impulse[0],
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y: impulse[1],
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});
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}
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static bodyFromShape(shape) {
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if (shape instanceof RectangleShape) {
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return Bodies.rectangle(
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shape.x,
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shape.y,
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shape.width,
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shape.height,
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);
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}
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else if (shape instanceof PolygonShape) {
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const vectors = [];
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for (const vertice of shape) {
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vectors.push({
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x: vertice[0],
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y: vertice[1],
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});
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}
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return Bodies.fromVertices(
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shape.x,
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shape.y,
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vectors,
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);
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}
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}
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get position() {
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return [
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this.matterBody.position.x,
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this.matterBody.position.y,
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];
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}
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set position(position) {
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MatterBody.setPosition(this.matterBody, {
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x: position[0],
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y: position[1],
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});
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}
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}
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