> For the complete documentation index, see [llms.txt](https://docs.convai.com/api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.convai.com/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/configuring-actions.md). # Configuring actions The `Convai Chatbot` component's `Environment` property controls every aspect of character actions: which actions the character can perform, which objects and characters it can reference, and whether actions are on at all. Set up action templates and register objects in the editor; compile the character Blueprint to save changes before entering Play mode. ### The Environment property The `Convai Chatbot` component (`UConvaiChatbotComponent`) exposes an **Environment** property of type `FConvaiEnvironmentData` in the **Convai | Actions** category of the Details panel. `FConvaiEnvironmentData` has the following top-level fields: | Field | Type | Purpose | | ------------------------ | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `bEnableActions` | `bool` | Master switch. Defaults to `true`. When `false`, no `action_config` is sent at session start and actions are disabled. | | `Actions` | `TArray` | The action templates the character can perform. | | `Objects` | `TArray` | Scene objects the character can reference as action targets. | | `Characters` | `TArray` | Other characters present in the scene. | | `CurrentAttentionObject` | `FConvaiObjectEntry` | The object currently in the chatbot's attention slot (see [Attention and reference grounding](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/attention-and-reference-grounding.md)). | #### Enabling actions **Enable Actions** defaults to `true` on every new `Convai Chatbot` component — no manual step is needed for fresh characters. To disable actions for a character that should only converse without performing physical tasks, expand **Environment** in the Details panel and untick **Enable Actions**. ### Defining action templates Each entry in the `Actions` array is an `FConvaiAction` struct with three primary fields: | Field | Type | Purpose | | ------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `Name` | `FString` | Canonical action name without parameter placeholders. Must match the handler name, including spaces and punctuation. | | `Description` | `FString` | Optional human-language hint sent to Convai describing what the action does. | | `Parameters` | `TArray` | Ordered typed parameters. See [Parameterized actions](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/parameterized-actions.md) for full details. | Additional timing fields: | Field | Type | Default | Purpose | | ------------------------ | ------- | ------- | -------------------------------------------------------------------------------------------------------------------------- | | `bWaitForBotSpeech` | `bool` | `false` | When `true` and this action arrives first in a new sequence, delay firing until the character begins or finishes speaking. | | `DelayAfterBotSpeechSec` | `float` | `0.0` | Additional delay in seconds after the speech condition resolves. Ignored when `bWaitForBotSpeech` is `false`. | #### Default actions The `Actions` array is pre-populated with four entries out of the box: | Action name | Parameters | Purpose | | ------------- | ------------------------------- | ---------------------------------------------------- | | `Move To` | `destination` (Actor Reference) | Navigate to a registered object or character target. | | `Follow` | `character` (Actor Reference) | Follow a registered character or the player. | | `Stop Moving` | — | Stop navigating. | | `Wait For` | `time in seconds` (Number) | Wait for a specified duration. | Default **Description** values on these templates are empty except `Follow`, which ships with `"Follow a character"`. You can rename, describe, or remove any default action as needed. To remove a default action, select it in the array and click the delete button. #### Adding a custom action {% stepper %} {% step %} #### Add a new entry Click **+** on the `Actions` array. {% endstep %} {% step %} #### Name the action Set **Name** to a unique, descriptive verb phrase, for example `"Open Door"`, `"Print"`, or `"Dance"`. {% endstep %} {% step %} #### Add a description (optional) Set **Description** only when the action name alone is ambiguous. Keep it short or leave it empty to reduce the context sent to Convai. {% endstep %} {% step %} #### Add parameters (optional) Add entries to **Parameters** if the action needs typed inputs. See [Parameterized actions](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/parameterized-actions.md). {% endstep %} {% step %} #### Compile and scaffold the handler Click **Compile** on the character Blueprint, then scaffold the handler. See [Building custom action handlers](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/building-custom-action-handlers.md). {% endstep %} {% endstepper %} #### Authoring tips | Practice | Why it matters | | ------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------- | | Short, distinct action names | Convai matches templates by name. `"Dance"` is easier to target than `"Perform Dance Animation"`. | | Short or empty descriptions | Descriptions are sent in the action contract. Extra prose adds context without improving behavior. | | Distinct object names | Use `"cube"` and `"gun"` instead of `"cube"` and `"cube2"` so reference parameters resolve reliably. | | **Choices** for fixed variants | One `Dance` action with a `type` parameter and three **Choices** beats three separate dance templates with duplicated descriptions. | | Compile before Play | New or edited action templates are not available to handlers until the Blueprint compiles. | {% hint style="warning" %} Action names must match the Blueprint function or event name on the owning Actor, including spaces and punctuation. Unreal resolves handler names case-insensitively, but `"Stop Moving"` and `"StopMoving"` are different names. {% endhint %} ### Registering objects The `Objects` array contains `FConvaiObjectEntry` structs for interactable scene objects. Each entry has: | Field | Type | Purpose | | ------------------ | ------------------------ | ------------------------------------------------------------------------------------------------- | | `Name` | `FString` | Unique label the character uses to identify this object. | | `Ref` | `TWeakObjectPtr` | The in-level Actor this entry represents. | | `Description` | `FString` | Optional plain-language description for Convai. | | `MoveTargetMode` | `EConvaiMoveTarget` | `Actor as goal` (stop at actor bounds) or `Component as goal` (walk to a specific sub-component). | | `AcceptanceRadius` | `float` | How close the AI must get before the move is considered complete. Default `150` cm. | | `ComponentName` | `FString` | Optional sub-component name for `Component as goal` mode. | | `SocketOrBoneName` | `FName` | Optional socket or bone name on the matched component. | | `bStepOntoBounds` | `bool` | When `true`, the AI walks onto the top of the object rather than stopping at its edge. | **To add an object:** 1. Click **+** on the `Objects` array. 2. Set `Name` to a short unique label. 3. Assign `Ref` to the target Actor using the eyedropper. 4. Set `Description` if helpful. 5. Adjust `MoveTargetMode` and `AcceptanceRadius` for navigation precision. #### Using `UConvaiObjectComponent` for automatic registration Instead of manually populating the `Objects` array, you can add `UConvaiObjectComponent` to any scene Actor. These components register automatically with all chatbots at session start through the `UConvaiSubsystem`. This is the preferred approach for levels with many interactable objects. See [Scene metadata](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/scene-metadata.md) for full documentation of `UConvaiObjectComponent`. ### Registering characters The `Characters` array works identically to `Objects` but represents other NPCs or AI characters the chatbot can reference in actions like `Follow`. At session start, the plugin can automatically add the player conversation partner to the character list when `bAutoFillConversationPartnerFromPlayer` is `true` on the chatbot component. The plugin uses the first `UConvaiPlayerComponent` it finds, falling back to player pawn `0` named `User` when needed. This property is in the **Convai | Session** category of the Details panel and defaults to `true`. Use `SetConversationPartner` when you need to register a non-player conversation partner. ### Runtime mutation {% hint style="info" %} Runtime mutation is for advanced use cases — most projects only need the editor-time setup above. {% endhint %} You can add or remove entries at runtime using the methods on `UConvaiChatbotComponent`: | Method | Purpose | | ----------------------------------------------------- | ----------------------------------------------------- | | `AddObject(Object, bFlushImmediately)` | Add a single `FConvaiObjectEntry` to the environment. | | `AddObjects(Objects, bFlushImmediately)` | Add multiple entries at once. | | `RemoveObject(ObjectName, bFlushImmediately)` | Remove by name. | | `RemoveObjects(ObjectNames, bFlushImmediately)` | Remove multiple by name. | | `ClearObjects(bFlushImmediately)` | Remove all objects. | | `AddCharacter(Character, bFlushImmediately)` | Add a character entry. | | `AddCharacters(Characters, bFlushImmediately)` | Add multiple character entries at once. | | `RemoveCharacter(CharacterName, bFlushImmediately)` | Remove a character by name. | | `RemoveCharacters(CharacterNames, bFlushImmediately)` | Remove multiple characters by name. | | `ClearCharacters(bFlushImmediately)` | Remove all characters. | Runtime object and character changes update the local `EnvironmentData` mirror immediately. In live sessions, changes that are not already part of the connect-time scene metadata snapshot are batched and sent through `update-scene-metadata` so Convai receives updated scene context. Pass `bFlushImmediately = true` only when an immediate update is critical, as frequent flushes generate excess network traffic. #### Advanced: GatherEnvironmentExtras Use this override only when the environment must change based on runtime state at session start. Override the `Gather Environment Extras` Blueprint native event on the NPC Actor to append additional actions, objects, or characters right before the session starts. The override runs once at `StartSession` time and is additive — it does not replace the Details panel defaults. ``` // Blueprint pseudocode // Blueprint native event override — implement in the NPC Actor Blueprint Event GatherEnvironmentExtras(out ExtraActions, out ExtraObjects, out ExtraCharacters) // Append quest-specific items that depend on runtime state Add FConvaiAction("Pick Up", "Pick up the item", []) → ExtraActions Add FConvaiObjectEntry("QuestKey", KeyActor) → ExtraObjects ``` ### Next steps {% content-ref url="/pages/Q9OxeZ4EchM8ABZ4pIOW" %} [Building custom action handlers](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/building-custom-action-handlers.md) {% endcontent-ref %} {% content-ref url="/pages/y5n6zO4nhEgGfJnXzGk4" %} [Parameterized actions](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/parameterized-actions.md) {% endcontent-ref %} {% content-ref url="/pages/lEX58Owo3bAVjCGO0ezK" %} [Actions Blueprint reference](/api-docs/plugins-and-integrations/convai-unreal-engine-plugin/features/character-actions/actions-blueprint-reference.md) {% endcontent-ref %} --- # Agent Instructions This documentation is published with GitBook. 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