Walkthrough 2: VR Laser Pointer Clicks & Hover

This tutorial demonstrates how to connect your VR Motion Controller's laser raycast to Quest 3D WebView for clicking and hovering.

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🎯 Objective

Enable VR laser pointing so players can hover over web elements (triggering animations and drop-down menus) and click web links using the index trigger.

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🛠️ Step 1: Continuous Laser Hover (Tick)

In your VR Character/Pawn (e.g. VRPawn), on Event Tick:

1. Perform a LineTraceByChannel from the right controller forward vector (e.g. Length = 500 cm).
2. If Hit Result hits an Actor containing a QuestWebViewComponent:
   • Call Find Collision UV on the Hit Result.
   • Check UV.X >= 0.0 and UV.Y >= 0.0.
   • Call SendHoverEventUV(Action: Move, UV: HitUV) on the hit WebView component.

[ Event Tick ] ──► [ LineTraceByChannel ] ──► ( Hit? ) ──► [ Find Collision UV ]
                                                                      │
                                                                      ▼
                                                       [ SendHoverEventUV (Move) ]

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🛠️ Step 2: Trigger Clicks (InputAction)

When the player presses the VR Index Trigger:

1. On IA_Grab_Right (Started):
2. From the last valid hit UV coordinate, call ClickUV(HitUV) on the target QuestWebViewComponent.

[ EnhancedInputAction (Started) ] ──► [ ClickUV (HitUV) ]

No Zero-Coordinate Branching Needed

Connect the trigger action directly to ClickUV with the last valid trace UV to prevent dropped click events!