How does one prevent the player from moving through walls?

How does one prevent the player from moving through walls? Is there a specific way to make a barrier where a player cant move or does the GM just have to make sure that they arent?

Dynamic Lighting is a Plus or higher subscription feature. <a href="https://app.roll20.net/account/supporter" rel="nofollow">https://app.roll20.net/account/supporter</a> Basically it's as simple going to the DL layer of the map and drawing your boundaries/barriers. &nbsp;Enabling the feature on your page settings and ensuring your tokens have sight and a light source. &nbsp;Bob's your uncle. &nbsp;:-) Wiki Info: <a href="https://wiki.roll20.net/Dynamic_Lighting" rel="nofollow">https://wiki.roll20.net/Dynamic_Lighting</a> and Wiki Dynamic Lighting Guide: <a href="https://wiki.roll20.net/Dynamic_Lighting_Examples" rel="nofollow">https://wiki.roll20.net/Dynamic_Lighting_Examples</a> Cheers

One thing to keep in mind, if a player is able to group together more than one token on the map and then moves them, individual tokens can be dragged across a light barrier. Most of my players have two characters and will occasionally get one of them "stuck" in (or even behind) a wall.

If there's a 1px gap in your barrier, a token(not matter how large) can pass through your barrier as well. From an old test:

I think the person who asked this question is not using dynamic lighting, so if that is the case, there is no way to prevent the tokens from moving. Have a look at "Fog of War" feature, This will not stop them from moving to areas, but it will block their vision.

I usually just show player's on the map that there is a barrier that they cannot cross, maybe something like portcullis, cliff/building ledge, force-field, etc. &nbsp;I like your idea of using FOW as well al e.

Here is the Roll20 wiki documentation for Fog Of War, method as al suggested, <a href="https://wiki.roll20.net/Fog_of_War" rel="nofollow">https://wiki.roll20.net/Fog_of_War</a>

Hey&nbsp; Tony M. - as our very helpful community mentioned above, the ability to&nbsp; Restrict Movement with walls is a feature available only to&nbsp; Supporters via our Dynamic Lighting &&nbsp; Line of Sight features. As a basic user, your best bet is Fog of War,&nbsp;which can only be removed by the GM; the presence or absence of PCs, light sources, lines of sight, etc. will not roll back any Fog of War and as al e. stated, it&nbsp;will not restrict the movement of your tokens, but will allow you to hide items in the Fog. If you end up trying out a Plus or Pro account you can also look into using our API to automate something like this for you - for example&nbsp; here is a thread from our mod The Aaron that allows you to import&nbsp;paths for dynamic lighting.