autohide cursor

Assets/Util/CursorHide.cs

@@ -0,0 +1,26 @@
+using UnityEngine;
+using System.Collections;
+
+public class CursorHide : MonoBehaviour {
+    public float hideAfterSeconds = 3f;
+    public float thresholdInPixels = 3f;
+
+    float _lastTime;
+    Vector3 _lastMousePos;
+
+    void Start () {
+        _lastTime = Time.timeSinceLevelLoad;
+        _lastMousePos = Input.mousePosition;
+    }
+
+    void Update () {
+        Vector2 dx = Input.mousePosition - _lastMousePos;
+        bool move = (dx.sqrMagnitude > (thresholdInPixels * thresholdInPixels));
+        _lastMousePos = Input.mousePosition;
+
+        if (move)
+            _lastTime = Time.timeSinceLevelLoad;
+
+        Cursor.visible = (Time.timeSinceLevelLoad - _lastTime) < hideAfterSeconds;
+    }
+}

Assets/Util/CursorHide.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 7e3f63f71f856934f8bb5743688a4732
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Util/Loader.cs

@@ -18,6 +18,11 @@ public class Loader : MonoBehaviour {
     private KeyCode PrevButton = KeyCode.Backspace;
     private KeyCode MenuButton = KeyCode.Escape;
 
+    public float mouseHideTimeSeconds = 3f;
+    public float mouseHideThreshold = 3f;
+    float mouseLastMoveTime;
+    Vector3 mouseLastMovePos;
+
     void Awake() {
         ToggleMenu(menuVisible);
     }
@@ -26,6 +31,11 @@ public class Loader : MonoBehaviour {
         scene = SceneManager.GetActiveScene();
         currentVis.text = scene.name;
         // Debug.Log("Active Scene name is: " + scene.name + "\nActive Scene index: " + scene.buildIndex);
+
+        // cursor visibility
+        mouseLastMoveTime = Time.timeSinceLevelLoad;
+        mouseLastMovePos = Input.mousePosition;
+
     }
 
     void Update() {
@@ -40,6 +50,8 @@ public class Loader : MonoBehaviour {
         if (Input.GetKeyDown(MenuButton)) {
             ToggleMenu(!menuVisible);
         }
+
+        CheckMouseVisibility();
     }
 
     void VfxMenuVisible(bool v) {
@@ -58,6 +70,21 @@ public class Loader : MonoBehaviour {
         menuVisible = visible;
     }
 
+    void CheckMouseVisibility() {
+        if (menuVisible) {
+            Vector2 dx = Input.mousePosition - mouseLastMovePos;
+            bool move = (dx.sqrMagnitude > (mouseHideThreshold * mouseHideThreshold));
+            mouseLastMovePos = Input.mousePosition;
+
+            if (move)
+                mouseLastMoveTime = Time.timeSinceLevelLoad;
+
+            Cursor.visible = (Time.timeSinceLevelLoad - mouseLastMoveTime) < mouseHideTimeSeconds;
+        } else {
+            Cursor.visible = false;
+        }
+    }
+
     public void NextScene() {
         int current = scene.buildIndex;
         int next = (current + 1) % (SceneManager.sceneCountInBuildSettings);