Add start dialogue action and interaction link creation

src/interactions/interaction-links.ts

@@ -48,6 +48,11 @@ export interface StopSoundAction {
   targetSoundEmitterId: string;
 }
 
+export interface StartDialogueAction {
+  type: "startDialogue";
+  dialogueId: string;
+}
+
 export interface ControlInteractionAction {
   type: "control";
   effect: ControlEffect;
@@ -60,6 +65,7 @@ export type InteractionAction =
   | StopAnimationAction
   | PlaySoundAction
   | StopSoundAction
+  | StartDialogueAction
   | ControlInteractionAction;
 
 export interface InteractionLink {
@@ -114,6 +120,13 @@ export interface CreateStopSoundInteractionLinkOptions {
   targetSoundEmitterId: string;
 }
 
+export interface CreateStartDialogueInteractionLinkOptions {
+  id?: string;
+  sourceEntityId: string;
+  trigger?: InteractionTriggerKind;
+  dialogueId: string;
+}
+
 export interface CreateControlInteractionLinkOptions {
   id?: string;
   sourceEntityId: string;
@@ -162,6 +175,11 @@ function cloneAction(action: InteractionAction): InteractionAction {
         type: "stopSound",
         targetSoundEmitterId: action.targetSoundEmitterId
       };
+    case "startDialogue":
+      return {
+        type: "startDialogue",
+        dialogueId: action.dialogueId
+      };
     case "control":
       return {
         type: "control",
@@ -306,6 +324,23 @@ export function createStopSoundInteractionLink(
   };
 }
 
+export function createStartDialogueInteractionLink(
+  options: CreateStartDialogueInteractionLinkOptions
+): InteractionLink {
+  assertNonEmptyString(options.sourceEntityId, "Interaction source entity id");
+  assertNonEmptyString(options.dialogueId, "Dialogue id");
+
+  return {
+    id: options.id ?? createOpaqueId("interaction-link"),
+    sourceEntityId: options.sourceEntityId,
+    trigger: options.trigger ?? "enter",
+    action: {
+      type: "startDialogue",
+      dialogueId: options.dialogueId
+    }
+  };
+}
+
 export function createControlInteractionLink(
   options: CreateControlInteractionLinkOptions
 ): InteractionLink {
@@ -348,6 +383,8 @@ export function getInteractionActionControlEffect(
       return createStopSoundControlEffect({
         target: createSoundEmitterControlTargetRef(action.targetSoundEmitterId)
       });
+    case "startDialogue":
+      return null;
     case "control":
       return cloneControlEffect(action.effect);
     case "teleportPlayer":
@@ -370,6 +407,8 @@ export function getInteractionActionLabel(action: InteractionAction): string {
       return "Play Sound";
     case "stopSound":
       return "Stop Sound";
+    case "startDialogue":
+      return "Start Dialogue";
     case "control":
       return getControlEffectLabel(action.effect);
   }
@@ -435,6 +474,11 @@ export function areInteractionLinksEqual(
         left.action.targetSoundEmitterId ===
         (right.action as StopSoundAction).targetSoundEmitterId
       );
+    case "startDialogue":
+      return (
+        left.action.dialogueId ===
+        (right.action as StartDialogueAction).dialogueId
+      );
     case "control":
       return areControlEffectsEqual(
         left.action.effect,