Enhanced Input patterns

Camera-relative 2D movement

• IA_Move: Axis2D.
• Keyboard mappings use Negate/Swizzle; gamepad stick maps directly with a dead zone.
• Bind Triggered for continuous movement values and handle zero/end only if receiver needs it.
• Convert input axes using controller/camera yaw basis, then call AddMovementInput for the Character.
• Do not multiply AddMovementInput scale by delta time; Character Movement consumes input and performs time integration.

Look

• IA_Look: Axis2D.
• Separate mouse and gamepad mappings/modifiers when sensitivity units/acceleration differ.
• Apply inversion/sensitivity in modifiers or a centralized settings layer.
• Test time-dilation and frame-rate behavior; mouse delta and stick rate may require different treatment.

Jump with forgiveness

• IA_Jump: Boolean + Pressed/appropriate one-shot semantics.
• Press records jump request; release calls Stop Jumping for variable height.
• Gameplay movement layer owns buffer and coyote windows.
• Clear on pawn/context changes and consume once.

Sprint

• Hold: Started/Triggered sets request; Completed/Canceled clears it.
• Toggle: Pressed toggles local intent; gameplay/server can reject based on stamina/state.
• A context should not contain competing hold and toggle implementations simultaneously.

Tap versus hold on one key

Prefer separate semantic actions sharing a key with Tap and Hold triggers, or one action whose trigger-state flow is deliberately interpreted. Test quick release, exact threshold, long hold, focus loss, mapping rebuild, and simultaneous chord conditions. Ensure tap does not fire after a successful hold unless designed.

Vehicle transition

1. Keep common pause/chat actions in base context.
2. Remove on-foot context.
3. Add vehicle context at documented priority.
4. Route actions to current controlled vehicle.
5. On exit/unpossess, reverse and clear held/buffered state.

GAS ability input

• Input Action produces semantic input identifier/tag.
• Player input binding layer finds granted ability specs or sends a Gameplay Event.
• GAS owns activation legality, cost, cooldown, prediction, and cancellation.
• Keep press/release state if the ability needs held-input tasks.
• Route the ability lifecycle to $unreal-gas-abilities.

Input testing/injection

Use showdebug enhancedinput for live actions/mappings and showdebug devices for devices. Use Enhanced Input injection or Input.+key/Input.-key for deterministic test support where appropriate. Injection tests the input pipeline; it does not prove physical-device or OS focus behavior.