Instructions on how to sync a cannon.js body with a Three.js Object3D nested within the camera group

Currently, I have integrated a sword model into the camera using the command camera.add(sword). However, I am facing difficulty in copying the position and quaternion of the sword to a cannon.js body. I attempted to add the cannon.js body to another body that is simulating the player's hitbox with the code cubeBody2.addBody(swordBody), but it ended up causing issues where the game broke and the canvas turned white. Any suggestions on how I can achieve this without encountering these problems?

javascriptthree.jscannon.js

Answer №1

After much trial and error, I discovered the trick to copying the position of a 3D object within a group. You must create new variables for both quaternion and position, then use 

sword.getWorldPosition(swordPosi);
and 
sword.getWorldQuaternion(swordRotation);
in your update function!

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