Add comprehensive New Input System documentation with examples for keyboard, mouse, gamepad, Input Actions, runtime rebinding, and best practices

Author: ozankasikci

README.md

@@ -30,6 +30,7 @@
   - [Keyboard](#keyboard)
   - [Mouse](#mouse)
   - [Touch](#touch)
+  - [New Input System](#new-input-system)
 - [UI](#ui)
   - [Button](#button)
   - [Slider](#slider)
@@ -76,7 +77,6 @@
   - [Fade UI element](#fade-ui-element)
   - [Load next scene](#load-next-scene)
 - [TBD (To Be Documented)](#tbd-to-be-documented)
-  - [Input](#input-1)
   - [Scripting](#scripting-1)
 
 ## Basics
@@ -382,6 +382,79 @@ if (Input.touchCount > 0) {
 }
 ```
 
+### New Input System
+
+The Input System package is the **standard for Unity 6** and recommended for all new projects. It provides flexible, multi-device input handling with runtime rebinding support.
+
+> For the complete guide with all examples, see [New Input System](docs/input/new-input-system.md)
+
+#### Quick Setup
+```
+Window > Package Manager > Unity Registry > Input System > Install
+Edit > Project Settings > Player > Active Input Handling > Input System Package (New)
+```
+
+#### Direct Device Access
+```csharp
+using UnityEngine.InputSystem;
+
+// Keyboard
+if (Keyboard.current.spaceKey.wasPressedThisFrame) {
+    Debug.Log("Space pressed");
+}
+
+// Mouse
+Vector2 mousePos = Mouse.current.position.ReadValue();
+if (Mouse.current.leftButton.wasPressedThisFrame) {
+    Debug.Log("Left click at " + mousePos);
+}
+
+// Gamepad (always check for null!)
+if (Gamepad.current != null) {
+    Vector2 leftStick = Gamepad.current.leftStick.ReadValue();
+    if (Gamepad.current.buttonSouth.wasPressedThisFrame) {
+        Debug.Log("A/Cross button pressed");
+    }
+}
+```
+
+#### Using Input Actions (Recommended)
+```csharp
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+public class PlayerController : MonoBehaviour
+{
+    [SerializeField] private InputActionReference moveAction;
+    [SerializeField] private InputActionReference jumpAction;
+
+    void OnEnable()
+    {
+        moveAction.action.Enable();
+        jumpAction.action.Enable();
+        jumpAction.action.performed += OnJump;
+    }
+
+    void OnDisable()
+    {
+        jumpAction.action.performed -= OnJump;
+        moveAction.action.Disable();
+        jumpAction.action.Disable();
+    }
+
+    void Update()
+    {
+        Vector2 move = moveAction.action.ReadValue<Vector2>();
+        transform.Translate(move.x * Time.deltaTime, 0, move.y * Time.deltaTime);
+    }
+
+    void OnJump(InputAction.CallbackContext context)
+    {
+        Debug.Log("Jump!");
+    }
+}
+```
+
 ## UI
 
 ### Button
@@ -1401,12 +1474,8 @@ if (nextSceneToLoad < totalSceneCount) {
 
 The following topics are planned to be added to the documentation:
 
-### Input
-- [ ] New Input System
-  - [ ] Input Actions
-  - [ ] Input Action Assets
-  - [ ] Player Input Component
-  - [ ] Input System Events
+### Scripting
+- [ ] More advanced scripting topics coming soon
 
 ---
 

docs/README.md

@@ -28,6 +28,7 @@ A comprehensive guide to Unity development patterns and practices.
 - [Keyboard](input/keyboard.md)
 - [Mouse](input/mouse.md)
 - [Touch](input/touch.md)
+- [New Input System](input/new-input-system.md)
 
 ### UI
 

docs/_sidebar.md

@@ -31,6 +31,11 @@
   * [Keyboard](input/keyboard.md)
   * [Mouse](input/mouse.md)
   * [Touch](input/touch.md)
+  * [New Input System](input/new-input-system.md)
+    * [Direct Device Access](input/new-input-system.md#direct-device-access)
+    * [Input Actions](input/new-input-system.md#input-actions)
+    * [Using in Code](input/new-input-system.md#using-input-actions-in-code)
+    * [Runtime Rebinding](input/new-input-system.md#runtime-rebinding)
 * UI
   * [Button](ui/button.md)
   * [Slider](ui/slider.md)

docs/input/keyboard.md

@@ -1,5 +1,7 @@
 # Keyboard
 
+> **Note:** This page covers the **Legacy Input Manager**. For Unity 6+ projects, see the [New Input System](new-input-system.md) which is now the standard.
+
 ```csharp
 // Returns true during the frame the user starts pressing down the key
 if (Input.GetKeyDown(KeyCode.Space)) {

docs/input/mouse.md

@@ -1,5 +1,7 @@
 # Mouse
 
+> **Note:** This page covers the **Legacy Input Manager**. For Unity 6+ projects, see the [New Input System](new-input-system.md) which is now the standard.
+
 ```csharp
 if (Input.GetAxis("Mouse X") < 0) {
     Debug.Log("Mouse moved left");