Fog of War & Multiplayer

Any actor can show up on the canvas with an icon and reveal the fog of war around it. Add the Dungeon Canvas Item component to the actor - it works on player pawns, bots and world objects like shrines or watch towers

The Player Setup page covers the player pawn. This page covers world object explorers, toggling them at runtime and how exploration is shared between players in multiplayer

World Object Explorers

A world object can light up the map around it, like a shrine or a watch tower the player discovers

For example, the theme below spawns this actor at the LevelGoal marker, so it ends up in the level as the dungeon’s exit

Open that actor and add a Dungeon Canvas Item component to it, the same way as on a pawn

• Leave Item Type as World Object
• Check Explore Fog Of War
• Set an Icon Name if you also want an icon drawn for it, e.g. Exit

Once the dungeon builds, the exit reveals the fog of war around it and shows up on the minimap

Fog of War Settings

The Fog Of War Settings on the component control how the item reveals the map

Property	Default	Description
Light Radius	2000	How far the item reveals the map around it, in world units
Num Shadow Samples	1	Number of jittered samples used to soften the shadow edges. Higher values give softer shadows at a higher cost
Shadow Jitter Distance	30	How far apart the samples are spread. Larger values give a wider soft edge

Toggle Exploration at Runtime

Use Fog Of War Explorer Enabled to turn the exploration on and off while the game runs. E.g. keep a shrine’s explorer disabled and enable it when the player activates the shrine

Note

Mark the component as replicated if you toggle this on the server, so the change flows down to the clients

You can also register an actor that has no canvas item component with the Add Fog Of War Explorer function on the dungeon actor’s canvas component, passing in its own fog of war settings

Sharing in Multiplayer

The Fog Of War Share Mode setting on the dungeon actor’s Dungeon Canvas component controls who sees whose exploration and icons

Mode	Description
Free For All	Each player only sees their own exploration. Other player icons are hidden
Team	Players with the same Team Id share their exploration and see each other’s icons
All Players	Everyone shares their exploration and sees everyone’s icons

You always see your own pawn and your own exploration, whatever the mode

Teams

Set the Team Id on the Dungeon Canvas Item component. -1 means the item belongs to no team

• Player items follow the share mode above
• World Object items ignore the share mode. With no team they are visible to everyone. With a team, only that team sees their icon and gets their fog of war reveal - e.g. a team’s watch tower lights up the map for that team only

Note

Mark the component as replicated if you assign teams on the server, so the ids flow down to the clients

To tell teams apart on the map, check Override Icon Tint on the item component and set Icon Tint from the team id. One icon entry in the theme covers every team, and you pick the color per actor. The same trick works for your own player - point the local pawn at a different tint once it is possessed, so you can tell yourself apart from everyone else

Custom Team Systems

The canvas reads the local player’s team from the Dungeon Canvas Item component on the possessed pawn. If your game has its own team system, override the Get Local Player Team Id function on the Dungeon Canvas component and return the team id from there

Older Projects

Older projects tracked actors with the DungeonMiniMapTrackedObject or DungeonCanvasTrackedObject component. These are redirected automatically to the Dungeon Canvas Item component when your project loads, no manual changes needed