We used a nifty parenting trick that I can't remember the exact code for.įor any dynamic objects, you'll have to write a script to update the 'mirror object' based upon the original object's location and animation. Then, depending on the mirror location and orientation, you can change the transform of this shell object to the appropriate location on the other side of the mirror. Basically all that should be left is the transform and the mesh/material data. components off that object (as well as it's children). Our solution was as follows (recommended to us by a professional who works with Unity): write a script that copies a GameObject, and strips all Monobehaviour, Physics, etc.

We were also developing with Unity Free, so we had the same problem as you. Coincidentally, a game that I worked on recently required the use of mirrors (though our mirrors would also reflect things that may not exist in the world). You are correct in that render textures are the best way to do mirrors in Unity.

Free textures for unity