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Unbound Movement Axis When Switching Player Pawn

I am implementing a system where the Player Controller swaps its controlled pawn between two Characters. I am accomplishing this using Possess and Unpossess logic inside the Player Controller, but after the transfer is complete the second character does not receive any input from the MoveForward and MoveRight axes. The other axes which rely on mouse input work fine (ex: Look, Turn), but these two are using the WASD keyboard keys are never activated. Other inputs which use keyboard keys (ex: C, M, Space Bar) and are bound as action mappings function properly; it's only the WASD input axes that never trigger their callbacks.

I have traced the problem into the PlayerInput class where all of the axis bindings are looped through to accumulate their values. A check is performed on if(AB.AxisDelegates.IsBound()), and the MoveForward and MoveRight axes fail this check. However, this is after they were added to the InputComponent in the Character's SetupPlayerInputComponent method. There are no other pawns or characters which are fighting for control of these axes (as far as I know), so I'm really not sure why they are coming back as unbound to the character. Would they somehow still have a reference to the original character, even though all of the other axes transfer successfully? Is there a way to discover what is consuming the input, if it isn't the Player Controller? The controller itself and its input settings are not changing, only the character it is controlling is being modified, so the input priority stack shouldn't be affected.

Additionally and strangely, if I setup input axis events for MoveForward and MoveRight in the character's blueprint, these do receive input and work correctly, so that at least proves that the pawn is enabled for receiving the axis input to some degree. Any idea why those methods and binding are failing in the code?

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asked Feb 26 '15 at 05:25 PM in Using UE4

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