UDungeonMeshSetDatabase Guide

UDungeonMeshSetDatabase is a visual theme collection that groups floors, walls, roofs, slopes, catwalks, and chandeliers.
You usually prepare separate databases for rooms and aisles, then reference them from UDungeonGenerateParameter.

Role

• Decide which FDungeonMeshSet is used
• Decide which floor, wall, roof, and other parts are used inside the selected FDungeonMeshSet

In other words, Phase 1 is the database deciding "which theme to use", and Phase 2 is the mesh set deciding "which part inside that theme to use".

Minimum usage

1. Create a Mesh set database asset.
2. Add one Mesh Set.
3. At minimum, add these parts to it:
   Floor Parts / Wall Parts / Roof Parts
4. Assign that database as the room or aisle database in UDungeonGenerateParameter.

Main properties

• Mesh Set Selection Policy (SelectionPolicy)
  Decides which Mesh Set is chosen from this database.
• Custom Mesh Set Selector
  A custom selector used only when Mesh Set Selection Policy = Custom Selector.
• Mesh Set (Parts)
  The actual theme list. Each item is an FDungeonMeshSet.

How to think about Mesh Set Selection Policy

• Random
  Good when you want variation within the same theme band.
• Identifier
  Chooses deterministically from the room identifier.
• Depth From Start
  Useful when you want the theme to change with progression from the start.
• Custom Selector
  Use this when you want fully custom logic for choosing a mesh set.

In the current setup, focus on SelectionPolicy, not SelectionMethod.
SelectionMethod is kept only for legacy asset compatibility.

What each FDungeonMeshSet decides

Each FDungeonMeshSet contains arrays and selection policies such as:

• Floor Parts
• Wall Parts
• Roof Parts
• Slope Parts
• Catwalk Parts
• Chandelier Parts

Chandeliers are managed inside each mesh set, not at the database-wide level.
If you want different levels of luxury by progression depth, splitting mesh sets is usually easier to manage.

Configuring chandeliers

Chandeliers are not a shared setting of UDungeonMeshSetDatabase. They are decoration settings on each FDungeonMeshSet.

Steps

1. Open UDungeonMeshSetDatabase.
2. Select the target Mesh Set.
3. Add FDungeonRandomActorParts entries to Chandelier Parts.
4. Adjust the following settings if needed:
   • ChandelierPartsSelectionPolicy
   • ChandelierMinSpacing
   • ChandelierMinCeilingHeight
   • ChandelierRadius
   • ChandelierWallWeight
   • ChandelierCombatWeight

What the main chandelier settings mean

• Chandelier Parts
  Candidate chandeliers that can actually be placed. Configure ActorClass and spawn behavior in FDungeonRandomActorParts.
• ChandelierPartsSelectionPolicy
  Decides which chandelier candidate is picked when multiple entries exist.
• ChandelierMinSpacing
  Minimum spacing between chandeliers. Increase it if they appear too dense.
• ChandelierMinCeilingHeight
  Minimum required ceiling height. This matters when you want to avoid collisions in low-ceiling themes.
• ChandelierRadius
  Collision-check radius during placement. Larger decorations usually need a larger value.
• ChandelierWallWeight / ChandelierCombatWeight
  Control how strongly candidates farther from walls or closer to combat-center-like positions are preferred.

Practical tips

• In low-ceiling themes, increase ChandelierMinCeilingHeight to reduce collisions.
• If deeper floors should look more luxurious, create a separate mesh set that includes chandeliers.
• If room visuals and aisle visuals should differ, separate them by mesh set rather than trying to solve it at database level.

Editing tips

• Managing room and aisle databases separately makes visual tuning much easier.
• Start with a single Mesh Set and add only the minimum parts first. Add additional sets only after that base set works.
• Verify catches cases where there is no floor, wall, or roof mesh at all.
• If you use Custom Selector, keep the logic lightweight and deterministic.

Read Next

• FDungeonMeshParts.en.md
  Review the per-mesh entry settings in detail.
• CustomSelector.en.md
  Review how to replace selection rules with custom selectors.

Related Pages

• FDungeonMeshParts.en.md
• FDungeonRandomActorParts.en.md
• UDungeonGenerateParameter.en.md
• CustomSelector.en.md