aframe-look-at-component/dist/aframe-look-at-component.min.js

Rotate an entity to face towards another entity in A-Frame

!function(e){function t(n){if(o[n])return o[n].exports;var i=o[n]={exports:{},id:n,loaded:!1};return e[n].call(i.exports,i,i.exports,t),i.loaded=!0,i.exports}var o={};return t.m=e,t.c=o,t.p="",t(0)}([function(e,t){var o=AFRAME.utils.debug,n=AFRAME.utils.coordinates,i=o("components:look-at:warn"),r=n.isCoordinates||n.isCoordinate;delete AFRAME.components["look-at"],AFRAME.registerComponent("look-at",{schema:{default:"0 0 0",parse:function(e){return r(e)||"object"==typeof e?n.parse(e):e},stringify:function(e){return"object"==typeof e?n.stringify(e):e}},init:function(){this.target3D=null,this.vector=new THREE.Vector3,this.cameraListener=AFRAME.utils.bind(this.cameraListener,this),this.el.addEventListener("componentinitialized",this.cameraListener),this.el.addEventListener("componentremoved",this.cameraListener)},update:function(){var e,t=this,o=t.data;return!o||"object"==typeof o&&!Object.keys(o).length?t.remove():"object"==typeof o?this.lookAt(new THREE.Vector3(o.x,o.y,o.z)):(e=t.el.sceneEl.querySelector(o),e?e.hasLoaded?t.beginTracking(e):e.addEventListener("loaded",function(){t.beginTracking(e)}):void i('"'+o+'" does not point to a valid entity to look-at'))},tick:function(){var e=new THREE.Vector3;return function(t){var o=this.target3D;o&&(o.getWorldPosition(e),this.lookAt(e))}}(),remove:function(){this.el.removeEventListener("componentinitialized",this.cameraListener),this.el.removeEventListener("componentremoved",this.cameraListener)},beginTracking:function(e){this.target3D=e.object3D},cameraListener:function(e){e.detail&&"camera"===e.detail.name&&this.update()},lookAt:function(e){var t=this.vector,o=this.el.object3D;this.el.getObject3D("camera")?t.subVectors(o.position,e).add(o.position):t.copy(e),o.lookAt(t)}})}]);