Collision Settings

Unreal Engine uses collision channels and collision presets to determine how objects detect, block, overlap, or ignore each other.

Some Ninja Bear Studio plugins require custom collision settings so they can perform gameplay queries consistently. These queries are used for features such as line-of-sight checks, melee and projectile traces, and other gameplay-specific detection.

This page lists the shared collision setup used by Ninja Bear Studio plugins. Configure only the channels and presets required by the plugins enabled in your project.

Collision settings are configured in Edit → Project Settings → Engine → Collision.

Object Channels

Object Channels represent the type of object being queried. These are commonly assigned through Collision Presets.

Adding Object Channels

Open Edit → Project Settings.
Navigate to Engine → Collision.
In Object Channels, add the object channels required by the plugins you are using.
Set each channel's Default Response according to the tables below.
Save the project settings and restart the editor if requested.

Plugin	Channel	Default Response	Purpose
Combat	`CombatObject`	Ignore	Represents objects that can be detected by combat traces, weapons, projectiles, aiming checks, or opportunity checks.
Interaction	`InteractionObject`	Ignore	Represents objects used by interaction sources and targets.
Combat, Inventory	`FloorObject`	Ignore	Optional object type for floor actors used by floor-specific traces or top-down targeting.

Trace Channels

Trace Channels represent specific query types used by gameplay systems.

Adding Trace Channels

Open Edit → Project Settings.
Navigate to Engine → Collision.
In Trace Channels, add the trace channels required by the plugins you are using.
Set each channel's Default Response according to the tables below.
Save the project settings and restart the editor if requested.

Plugin	Channel	Default Response	Purpose
Interaction	`InteractionSight`	Ignore	Used to validate line of sight between an interaction source and an interaction target. See note below!
Combat	`Projectile`	Block	Used by projectile traces, hit-scan traces, and projectile-style collision checks.
Combat	`Opportunity`	Ignore	Used by opportunity checks, such as opportunity attacks or combat line-of-sight validation.
Combat	`Evade`	Block	Used for evade checks or movement-space validation.
Combat	`Aim`	Ignore	Used for aiming traces or target validation.
Combat, Inventory	`Floor`	Ignore	Used for floor traces, mouse targeting, or ground detection.

Line of Sight for Interactions

Interaction line-of-sight checks use the InteractionSight channel to detect blocking geometry between the scanner and the interaction target.

For common blocking geometry, make sure relevant presets block InteractionSight. This usually includes presets such as:

BlockAll
BlockAllDynamic
Any project-specific wall, prop, door, obstacle, or blocking-volume preset

Adding Collision Presets

Collision Presets make it easier to apply the correct channel responses to actors and components without configuring each one manually.

Adding Collision Presets

Open Edit → Project Settings.
Navigate to Engine → Collision.
In Preset, add each preset required by the plugins you are using.
Set Collision Enabled, Object Type, and Collision Responses according to the tables below.
Save the project settings and restart the editor if requested.

Collision Presets

The following presets provide reusable collision configurations for common Ninja Bear Studio gameplay components. Add only the presets required by the plugins enabled in your project, then assign them to the relevant actors or components.

Plugin	Preset	Collision Enabled	Object Type	Purpose
Interaction	`InteractionSource`	Query Only	`InteractionObject`	Used by scanner components that detect interaction targets.
Interaction	`InteractionTarget`	Query Only	`InteractionObject`	Used by interactable actors that can be detected by interaction scans.
Combat	`Combat`	Query Only	`CombatObject`	Used by actors or components that should be detected by combat traces.
Combat, Inventory	`Floor`	Query and Physics	`WorldStatic`	Used by floor actors that should support floor traces or top-down targeting.

Preset Details

Use the following entries as a reference for each Preset being added to your project.

InteractionSource

Use this preset for scanning components attached to actors that can look for interactable targets.

Setting	Value
Collision Enabled	Query Only
Object Type	`InteractionObject`
`InteractionObject`	Overlap
All other channels	Ignore

InteractionTarget

Use this preset for actors or components that should be detected by interaction scans.

Setting	Value
Collision Enabled	Query Only
Object Type	`InteractionObject`
`InteractionObject`	Block
All other channels	Ignore

Floor

Use this preset for floor actors that should participate in floor-specific queries, such as the placement of Cast Actors (combat) or Dropped Items (inventory).

Setting	Value
Collision Enabled	Query and Physics
Object Type	`WorldStatic`
`Floor`	Block
`FloorObject`	Block
`Projectile`	Ignore
`Evade`	Ignore
Other channels	Project-specific

Combat

Use this preset for components that should be detected by combat-related traces. Combat Objects are usually the mesh that represents the pawn or character, or dedicated collision components added along the skeleton.

Setting	Value
Collision Enabled	Query Only
Object Type	`CombatObject`
`CombatObject`	Block
`Opportunity`	Block
`Aim`	Block
`Pawn`	Ignore
`Camera`	Ignore
`Vehicle`	Ignore
`InteractionSight`	Ignore
Other channels	Project-specific

Collision Parity

As you introduce new traces and channels, you might need to review other predefined channels to ensure their parity with the new instructions.

Profile	Changes
`Trigger`	Should ignore `Projectile` and `InteractionSight`.
`NoCollision`	Should ignore `Projectile` and `InteractionSight`.
`BlockAll`	Should block `InteractionSight`.
`BlockAllDynamic`	Should block `InteractionSight`.

21 May 2026