add input timestamp api

app/src/main/java/com/geode/launcher/GeometryDashActivity.kt

@@ -515,12 +515,17 @@ class GeometryDashActivity : AppCompatActivity(), Cocos2dxHelper.Cocos2dxHelperL
     }
 
     override fun onCapabilityAdded(capability: String): Boolean {
-        if (capability == GeodeUtils.CAPABILITY_EXTENDED_INPUT) {
-            mGLSurfaceView?.useKeyboardEvents = true
-            return true
+        return when (capability) {
+            GeodeUtils.CAPABILITY_EXTENDED_INPUT -> {
+                mGLSurfaceView?.useKeyboardEvents = true
+                true
+            }
+            GeodeUtils.CAPABILITY_TIMESTAMP_INPUT -> {
+                mGLSurfaceView?.sendTimestampEvents = true
+                true
+            }
+            else -> false
         }
-
-        return false
     }
 
     /**

app/src/main/java/com/geode/launcher/utils/GeodeUtils.kt

@@ -450,6 +450,7 @@ object GeodeUtils {
     }
 
     const val CAPABILITY_EXTENDED_INPUT = "extended_input"
+    const val CAPABILITY_TIMESTAMP_INPUT = "timestamp_inputs"
 
     private var capabilityListener: WeakReference<CapabilityListener?> = WeakReference(null)
 
@@ -470,4 +471,7 @@ object GeodeUtils {
     external fun nativeKeyDown(keyCode: Int, modifiers: Int, isRepeating: Boolean)
     external fun nativeActionScroll(scrollX: Float, scrollY: Float)
     external fun resizeSurface(width: Int, height: Int)
+
+    // represents the timestamp of the next input callback, in nanoseconds (most events don't send it, but it's there)
+    external fun setNextInputTimestamp(timestamp: Long)
 }