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6 lines
1.9 KiB
JavaScript
6 lines
1.9 KiB
JavaScript
2 years ago
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/*!
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* matter-attractors 0.1.6 by Liam Brummitt 2017-05-15
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* https://github.com/liabru/matter-attractors
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* License MIT
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*/
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!function(t,r){"object"==typeof exports&&"object"==typeof module?module.exports=r(require("matter-js")):"function"==typeof define&&define.amd?define(["matter-js"],r):"object"==typeof exports?exports.MatterAttractors=r(require("matter-js")):t.MatterAttractors=r(t.Matter)}(this,function(t){return function(t){function r(o){if(e[o])return e[o].exports;var n=e[o]={i:o,l:!1,exports:{}};return t[o].call(n.exports,n,n.exports,r),n.l=!0,n.exports}var e={};return r.m=t,r.c=e,r.i=function(t){return t},r.d=function(t,e,o){r.o(t,e)||Object.defineProperty(t,e,{configurable:!1,enumerable:!0,get:o})},r.n=function(t){var e=t&&t.__esModule?function(){return t.default}:function(){return t};return r.d(e,"a",e),e},r.o=function(t,r){return Object.prototype.hasOwnProperty.call(t,r)},r.p="/libs",r(r.s=1)}([function(r,e){r.exports=t},function(t,r,e){"use strict";var o=e(0),n={name:"matter-attractors",version:"0.1.4",for:"matter-js@^0.12.0",install:function(t){t.after("Body.create",function(){n.Body.init(this)}),t.before("Engine.update",function(t){n.Engine.update(t)})},Body:{init:function(t){t.plugin.attractors=t.plugin.attractors||[]}},Engine:{update:function(t){for(var r=t.world,e=o.Composite.allBodies(r),n=0;n<e.length;n+=1){var i=e[n],a=i.plugin.attractors;if(a&&a.length>0)for(var s=n+1;s<e.length;s+=1)for(var u=e[s],c=0;c<a.length;c+=1){var p=a[c],f=p;o.Common.isFunction(p)&&(f=p(i,u)),f&&o.Body.applyForce(u,u.position,f)}}}},Attractors:{gravityConstant:.001,gravity:function(t,r){var e=o.Vector.sub(r.position,t.position),i=o.Vector.magnitudeSquared(e)||1e-4,a=o.Vector.normalise(e),s=-n.Attractors.gravityConstant*(t.mass*r.mass/i),u=o.Vector.mult(a,s);o.Body.applyForce(t,t.position,o.Vector.neg(u)),o.Body.applyForce(r,r.position,u)}}};o.Plugin.register(n),t.exports=n}])});
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