From 7c16782f538fd04e4f5092244eec67253603bf4a Mon Sep 17 00:00:00 2001
From: Xyct <87l46110@gmail.com>
Date: Mon, 3 Jun 2024 17:33:56 +0800
Subject: [PATCH] Limit max polling rate (#142)

* limit max swipe polling rate

* move polling rate limit to ControlMode
---
 .../Controls/Backend/Action/PlayAction.swift  |  1 +
 PlayTools/Controls/Frontend/ControlMode.swift | 30 +++++++++++++++++--
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/PlayTools/Controls/Backend/Action/PlayAction.swift b/PlayTools/Controls/Backend/Action/PlayAction.swift
index 4f024362..86df3399 100644
--- a/PlayTools/Controls/Backend/Action/PlayAction.swift
+++ b/PlayTools/Controls/Backend/Action/PlayAction.swift
@@ -360,6 +360,7 @@ class SwipeAction: Action {
         counter += 1
         self.location.x += deltaX
         self.location.y -= deltaY
+
         Toucher.touchcam(point: self.location, phase: UITouch.Phase.moved, tid: &id)
     }
 
diff --git a/PlayTools/Controls/Frontend/ControlMode.swift b/PlayTools/Controls/Frontend/ControlMode.swift
index cf6eb9a2..d0d08914 100644
--- a/PlayTools/Controls/Frontend/ControlMode.swift
+++ b/PlayTools/Controls/Frontend/ControlMode.swift
@@ -71,9 +71,8 @@ public class ControlMode: Equatable {
             })
         }
 
-        AKInterface.shared!.setupMouseMoved({deltaX, deltaY in
-            self.mouseAdapter.handleMove(deltaX: deltaX, deltaY: deltaY)
-        })
+        // Mouse polling rate as high as 1000 causes issue to some games
+        setupMouseMoved(maxPollingRate: 125)
 
         AKInterface.shared!.setupMouseButton(left: true, right: false, {_, pressed in
             self.mouseAdapter.handleLeftButton(pressed: pressed)
@@ -90,6 +89,31 @@ public class ControlMode: Equatable {
         ActionDispatcher.build()
     }
 
+    private func setupMouseMoved(maxPollingRate: Int) {
+        let minMoveInterval =
+            DispatchTimeInterval.milliseconds(1000/maxPollingRate)
+        var lastMoveWhen = DispatchTime.now()
+        // Repeat the return value of last processed event
+        var consumed = true
+        var movement: CGVector = CGVector()
+
+        AKInterface.shared!.setupMouseMoved({deltaX, deltaY in
+            // limit move frequency
+            let now = DispatchTime.now()
+            movement.dy += deltaY
+            movement.dx += deltaX
+            if now < lastMoveWhen.advanced(by: minMoveInterval) {
+                return consumed
+            }
+
+            lastMoveWhen = now
+            consumed = self.mouseAdapter.handleMove(deltaX: movement.dx, deltaY: movement.dy)
+            movement.dy = 0
+            movement.dx = 0
+            return consumed
+        })
+    }
+
     public func set(_ mode: ControlModeLiteral) {
         let wasHidden = mouseAdapter?.cursorHidden() ?? false
         let first = mouseAdapter == nil