UMjInputHandler

Handles keyboard hotkeys for the MuJoCo simulation (debug toggles, pause, reset, etc.).

Attribute	Value
Kind	Class
UE Macro	UCLASS
Inherits	UActorComponent
Blueprint Spawnable	✅ Yes

Properties Functions

Properties

Private Properties

Property	Type	Description
LastLMBPressTime	float	Last time LMB was pressed (seconds since startup). Used to
bPrevCtrlLmbHeld	bool	Previous-frame Ctrl+LMB / Ctrl+RMB held state for press-edge
bPerturbationCameraLocked	bool	Whether we currently hold a camera-input lock on the player
TranslateClickScreen	FVector2D	Screen-space position of the cursor at Ctrl+RMB press, plus the
MouseDeltaProcessor	TSharedPtr<FMjMouseDeltaProcessor>	Slate input pre-processor that captures raw mouse deltas from

LastLMBPressTime

Last time LMB was pressed (seconds since startup). Used to

• Type: float

bPrevCtrlLmbHeld

Previous-frame Ctrl+LMB / Ctrl+RMB held state for press-edge

• Type: bool

bPerturbationCameraLocked

Whether we currently hold a camera-input lock on the player

• Type: bool

TranslateClickScreen

Screen-space position of the cursor at Ctrl+RMB press, plus the

• Type: FVector2D

MouseDeltaProcessor

Slate input pre-processor that captures raw mouse deltas from

• Type: TSharedPtr

Functions

Private Functions

General

Function	Returns	Description
ProcessHotkeys()	void	Processes keyboard hotkeys for simulation control and debug toggles.
ProcessPerturbation()	void	Drives perturbation gestures: double-click-LMB select, Ctrl+RMB
LockCamera()	void	Pushes camera lock if not already held.
UnlockCamera()	void	Releases camera lock if held.

ProcessHotkeys

Processes keyboard hotkeys for simulation control and debug toggles.

• Signature: ProcessHotkeys(APlayerController* PC)

ProcessPerturbation

Drives perturbation gestures: double-click-LMB select, Ctrl+RMB

• Signature: ProcessPerturbation(APlayerController* PC, float DeltaTime)

LockCamera

Pushes camera lock if not already held.

• Signature: LockCamera(class APlayerController* PC)

UnlockCamera

Releases camera lock if held.

• Signature: UnlockCamera(class APlayerController* PC)