TaleSpire has multiple tools for hiding things from players. You can set creatures to be hidden, you can use hide volumes to hide chunks of the world, and more recently, you can limit a player's vision so they can only see what the creatures in the party can see. That last one is what we mean when we talk about vision limits.

To see how this works, we have to start by explaining what the party is in TaleSpire.
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The Party

At the time of writing, the party is the collection of creatures who have players with permissions to control them. As a GM, you can find the player permissions in the radial menu.

Limiting Vision

Now that we know about the party, let's take a look at how to limit a player's vision to only what the party can see. 
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This is done simply by clicking on the vision limit toggle on one of the client portraits for that player [0].
As a GM, you will see a change in the indicator and the background of the portrait.
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For the player, the result is much more dramatic. Now they can only see what the creatures in the party see. And as the creature is moved around, things are revealed.
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Back in GM-land, we can see that a given player has their vision limited, but it's hard to tell what the party can see. Enter the "vision limit preview" toggle. By clicking this, we grey out all the things outside of the party's view
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By default, creatures have a vision of 6 tiles. This was an arbitrary number, but of course, you can change it. You can find the vision range in the radial menu

Known Limitations

We have wanted to get this feature in your hands for a while, but we had to squash many bugs first. Here are some things we know about, but that we felt could be fixed later, so you folks didn't have to wait any longer for the feature.

  • Vision limits don't hide lights. This isn't usually as bad as it would seem as lights have to shine on something to be visible. However this is an issue when using black fog, as it really shows up there. We want to fix this but we didn't have it ready in time for the release.
  • Shadows from hidden things can be visible when there is very dark, very low fog.
  • The grey preview overlay is hard to read in some situations
  • The grey overlay doesn't affect creatures yet
  • Some have reported that the gray overlay can be a little disorienting when moving quickly. Does this affect you? Let us know.

Outro

And that is the overview of vision limits! We hope this gives you some new ways to surprise your players and gives that deeper sense of exploration we felt when play-testing it.

As always, we are reachable on Discord and at support@bouncyrock.com. Bugs can be reported at https://feedback.talespire.com/b/Bug-Reports and feature requests submitted at https://feedback.talespire.com/b/Feature-Requests
[0] We are using very specific language here, as a single player might be running multiple copies of TaleSpire at the same time. Either from multiple computers or even just one.

If a single player joins the board from two separate running copies of TaleSpire, they will have two portraits. One for each client (copy of TaleSpire).

99% of the time, each player is only running one copy of TaleSpire, so it doesn't matter, but we wanted to be precise here.