From 9315c08a69674ea8a97e239d1f08f7bcbf1a1ae3 Mon Sep 17 00:00:00 2001
From: mushgunAX <mushgun_ax@hotmail.com>
Date: Fri, 10 Mar 2023 21:37:54 +0800
Subject: [PATCH] Mouse centering velocity calculation corrected

---
 SHADE_Engine/src/Input/SHInputManager.cpp | 40 +++++++++++++++++++----
 1 file changed, 34 insertions(+), 6 deletions(-)

diff --git a/SHADE_Engine/src/Input/SHInputManager.cpp b/SHADE_Engine/src/Input/SHInputManager.cpp
index dd3cfe80..6645aa1b 100644
--- a/SHADE_Engine/src/Input/SHInputManager.cpp
+++ b/SHADE_Engine/src/Input/SHInputManager.cpp
@@ -798,17 +798,45 @@ namespace SHADE
 
     //Get cursor position, even when it is outside window
     POINT p;
-    GetCursorPos(&p);
+    GetCursorPos(&p); //This point is WRT the screen, not the window
+    //ScreenToClient(GetActiveWindow(), &p);
     mouseScreenX = p.x;
     mouseScreenY = p.y;
+    //SHLOGV_INFO("MouseScreenY = {}", mouseScreenY);
 
-    //Velocity
-    mouseVelocityX = static_cast<double>(mouseScreenX - mouseScreenXLast) / dt;
-    mouseVelocityY = static_cast<double>(mouseScreenY - mouseScreenYLast) / dt;
+    if (!mouseCentering)
+    {
+      //Velocity
+      mouseVelocityX = static_cast<double>(mouseScreenX - mouseScreenXLast) / dt;
+      mouseVelocityY = static_cast<double>(mouseScreenY - mouseScreenYLast) / dt;
+    }
+    else
+    {
+      //Mouse centering
+      //uint32_t width = SHADE::SHGraphicsSystemInterface::GetWindowWidth();
+      //uint32_t height = SHADE::SHGraphicsSystemInterface::GetWindowHeight();
+      int mouseCenterX = 0;
+      int mouseCenterY = 0;
+      RECT wndRect = { NULL }; //4th quadrant
+      if (GetWindowRect(GetActiveWindow(), &wndRect))
+      {
+        mouseCenterX = wndRect.left + (wndRect.right - wndRect.left) / 2;
+        mouseCenterY = wndRect.top + (wndRect.bottom - wndRect.top) / 2;
+        //SHLOGV_INFO("W: {0}, H: {1}", (wndRect.right - wndRect.left), (wndRect.bottom - wndRect.top));
+      }
 
+      //Velocity
+      mouseVelocityX = static_cast<double>(mouseScreenX - mouseCenterX) / dt;
+      mouseVelocityY = static_cast<double>(mouseScreenY - mouseCenterY) / dt;
 
+      //SHLOGV_INFO("mouseScreenY = {0:0}, mouseCenterY = {1:0}", mouseScreenY, mouseCenterY);
+      //SHLOGV_INFO("{0.0}", mouseVelocityY);
+
+      SetMouseScreenPosition(mouseCenterX, mouseCenterY);
+    }
+    
     //Mouse Centering
-    if (mouseCentering)
+    /*if (mouseCentering)
     {
       uint32_t width = SHADE::SHGraphicsSystemInterface::GetWindowWidth();
       uint32_t height = SHADE::SHGraphicsSystemInterface::GetWindowHeight();
@@ -819,7 +847,7 @@ namespace SHADE
       GetCursorPos(&p);
       mouseVelocityX -= static_cast<double>(p.x - mouseScreenX) / dt;
       mouseVelocityY -= static_cast<double>(p.y - mouseScreenY) / dt;
-    }
+    }*/
 
     if (mouseVelocityX != 0.0 || mouseVelocityY != 0.0)
       controllerInUse = false;
-- 
2.40.1