API Reference

Types are in CrimsonInput unless noted. BP = Blueprint-callable; BP (pure) = Blueprint pure node; C++ only = no Blueprint node. The binding templates on UCrimsonInputComponent are C++ only.

Config & component

Type	Kind	Description
`UCrimsonInputConfig`	`UDataAsset` (Const)	Maps `UInputAction` assets to tags across `NativeInputActions`, `AbilityInputActions`, `UIInputActions`. BP: `FindNativeInputActionForTag`, `FindAbilityInputActionForTag`, `FindUIInputActionForTag`.
`FCrimsonInputAction`	Struct (BlueprintType)	One `TObjectPtr<const UInputAction>` + `FGameplayTag` pair; the element type of all three config lists.
`UCrimsonInputComponent`	`UEnhancedInputComponent`	C++ only: `BindNativeAction` (tag -> callback, one `ETriggerEvent`), `BindAbilityActions` (press `Triggered`; release `Completed`+`Canceled`; callback `void(FGameplayTag)`), `BindAbilityActionsWithAction` (press `Started`; release `Completed`+`Canceled`; callback `void(UInputAction, FGameplayTag)`), `RemoveBinds`. BP but reserved no-op:* `AddInputMappings` / `RemoveInputMappings` currently do nothing - apply IMCs with `UCrimsonInputHelpers::AddMappingContextWithChordTriggers` instead.

Modifiers & settings provider

Type	Kind	Description
`ICrimsonInputSettingsProvider`	UInterface	Implement on your `ULocalPlayer`. C++ virtuals `GetGamepadMoveStickDeadZone`, `GetGamepadLookStickDeadZone`, `GetGamepadLookSensitivityPreset`, `GetGamepadTargetingSensitivityPreset`, `GetInvertVerticalAxis`, `GetInvertHorizontalAxis`, `GetSharedSettingsObject` (C++ only). Each has a `K2_` BP BlueprintNativeEvent the virtual defaults to.
`UCrimsonInputModifierDeadZone`	`UInputModifier`	Radial/Axial deadzone. Lower threshold from the provider (`DeadzoneStick` = Move/Look); `Type`, `UpperThreshold` are properties. `NotBlueprintable`.
`UCrimsonInputModifierGamepadSensitivity`	`UInputModifier`	Scales look by `SensitivityLevelTable->SensitivityEnumToFloat()` at the player's preset. `TargetingType` (Normal/ADS) selects which preset. `NotBlueprintable`.
`UCrimsonInputModifierAimInversion`	`UInputModifier`	Inverts X and/or Y from provider flags. No properties. `NotBlueprintable`.
`UCrimsonSettingBasedScalar`	`UInputModifier`	Scales axes by named `float`/`double` properties read from `GetSharedSettingsObject()` via reflection. `X/Y/ZAxisScalarSettingName`, `Min/MaxValueClamp`. `NotBlueprintable`.
`ECrimsonTargetingType`	Enum (BlueprintType)	`Normal` / `ADS` - which sensitivity preset the gamepad modifier reads.
`EDeadzoneStick`	Enum (BlueprintType)	`MoveStick` / `LookStick` - which deadzone value the deadzone modifier reads.

Chord system & rebinding

Type	Kind	Description
`UInputTriggerCrimsonDynamicChord`	`UInputTrigger`	Enforces a modifier chord (exact match; gamepad bypass). `DefaultChord` (inline default), `MappingName` (set to opt into per-player overrides), `bOverrideSlot`/`OverrideSlot`. `NotBlueprintable`, `NotInputConfigurable`.
`UInputTriggerCrimsonPressAndHold`	`UInputTrigger`	Explicit trigger for Tap/Hold/Toggle: `Triggered` once on actuation, `Ongoing` while held, `Completed` on real release. No properties.
`FCrimsonChordRequirement`	Struct (BlueprintType, CrimsonCommon)	`bRequiresShift`, `bRequiresCtrl`, `bRequiresAlt` (all `SaveGame`). `IsEmpty()`, `GetDisplayName(FKey)`.
`UCrimsonInputUserSettings`	`UEnhancedInputUserSettings`	Per-player chord persistence (`ChordMappings`, `SaveGame`). BP: `SetChordRequirement`, `GetChordRequirement`, `GetChordRequirementWithDefaults`, `ClearChordRequirement`, `ClearAllChordRequirements`, `OnSettingsApplied` (BlueprintNativeEvent). BP (pure): `HasChordRequirement`, `FindChordConflict`. Reach it via the subsystem's `Get Enhanced Input User Settings` then cast.
`FCrimsonChordMappingEntry`	Struct (SaveGame)	`MappingName` + `Slot` + `FCrimsonChordRequirement`; the persisted array element in `UCrimsonInputUserSettings`.
`UCrimsonPlayerMappableKeySettings`	`UPlayerMappableKeySettings`	Attach to a `UInputAction` for the rebindable flow; its `Name` keys the per-player overrides. BP (pure): `GetTooltipText`; `Tooltip` property.
`UCrimsonInputSettings`	`UDeveloperSettings` (Config=Game)	Project Settings -> Crimson -> Crimson Input. Shift/Ctrl/Alt modifier action soft-refs + `UIConfirmAction`/`UIBackAction`. BP (pure): `GetShiftModifierAction`, `GetCtrlModifierAction`, `GetAltModifierAction`, `GetUIConfirmAction`, `GetUIBackAction`. (`static Get()` is C++ only.)
`UCrimsonInputHelpers`	`UBlueprintFunctionLibrary`	BP: `CreateIMCWithChordTriggers`, `AddMappingContextWithChordTriggers` (subsystem), `AddMappingContextToPlayerWithChordTriggers` (local player). BP (pure): `GetChordDisplayTextForAction` (formatted key+chord label).

Sensitivity & extension bases

Type	Kind	Description
`UCrimsonAimSensitivityData`	`UPrimaryDataAsset` (Const)	`TMap<ECrimsonGamepadSensitivity, float> SensitivityMap`. BP (pure): `SensitivityEnumToFloat`.
`ECrimsonGamepadSensitivity`	Enum (BlueprintType, CrimsonCommon)	10 named presets (`Slow` ... `Insane`). Defined in `CrimsonCommon/Public/Input/CrimsonSensitivityTypes.h`.
`UCrimsonPlayerInput`	`UEnhancedPlayerInput`	Thin extension point for player-input processing (telemetry, latency markers). Optional; dormant in the shipped project.
`UCrimsonPlayerMappableKeyProfile`	`UEnhancedPlayerMappableKeyProfile`	Fires `OnProfileEquipped` / `OnProfileUnequipped` BlueprintNativeEvents on key-profile change.

Related (other plugins)

Type	Plugin	Why it matters here
`UCrimsonAbilitySystemComponent::AbilityInputTagPressed` / `AbilityInputTagReleased`	CrimsonAbilitySystem	BP - forward ability input by tag from Blueprint (Enhanced Input event -> these nodes). Standalone GAS input entry point.
`ACrimsonCharacter`, `UCrimsonPawnData`	CrimsonCore	The Blueprint fast path: subclass the character, set `PawnData->InputConfig`, and all input auto-binds. See Concept: Full-Stack Integration & Multiplayer.