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Capture mouse X/Y movement deltas without requiring InputAction(s)

How can I capture X/Y movement deltas so I can rotate an actor (a building) along the Z axis without requiring the user to press and hold a [mouse] button? I got as far as capturing the movement values but only when I hold down left mouse...

In a nutshell I have a CameraPawnController that extends PlayerController. On BeginPlay CameraPawnController creates a new instance of BuildingPlanner that extends Actor. BuildingPlanner is used by the player to find a location and (hopefully soon) rotation of a building before finalizing the building placement.

My BuildingPlanner StartPlan is called by CameraPawnController on left mouse button. DisableInput is called when the building plan is cancelled/finished, i will leave that out for brevity. alt text

This is my attempt to grab the mouse movement on every tick so I can allow the user to rotate a building after selecting a location. The below only outputs the mouse movement values when I'm holding down left mouse button. alt text

I need to remove this requirement because after the user selects a building from the HUD it shows them a "ghost" building to find the building transform. First step is finding a location, after they find a location they left mouse click to lock the actor to that location. Second step is finding the actor rotation Z by moving along mouse X and left mouse clicking to accept the rotation (thus the building plan) and then the BuildingPlanner actor's transform is sent to the server to be built.

Product Version: UE 4.12
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asked Jun 19 '16 at 07:07 PM in Blueprint Scripting

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avatar image elitereloaded Jun 19 '16 at 10:55 PM

Bump. Has no one needed to do this before? Seems like something that would be used a lot.

Looks like someone had the same question about UE 4.8 and it never had a good answer/solution.


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