diff --git a/lime/InputHandler.hx b/lime/InputHandler.hx
index 3667f7886..11fefe4b3 100644
--- a/lime/InputHandler.hx
+++ b/lime/InputHandler.hx
@@ -263,7 +263,13 @@ class InputHandler {
         last_mouse_x = _event.x;
         last_mouse_y = _event.y;
 
-        // trace("mouse moved, delta : " + deltaX + ' ' + deltaY);
+            //locked cursor gives us the delta directly from sdl
+        #if lime_native
+            if(lib.window.cursor_locked) {
+                deltaX = _event.deltaX;
+                deltaY = _event.deltaY;
+            }
+        #end //lime_native
 
         if(lib.host.onmousemove != null) {
 
diff --git a/project/include/Display.h b/project/include/Display.h
index 7bded881b..b053eba69 100644
--- a/project/include/Display.h
+++ b/project/include/Display.h
@@ -92,8 +92,8 @@ enum EventResult
 
 struct Event
 {
-   Event(EventType inType=etUnknown,int inX=0,int inY=0,int inValue=0,int inID=0,int inFlags=0,float inSx=1,float inSy=1):
-        type(inType), x(inX), y(inY), value(inValue), id(inID), flags(inFlags), result(erOk), sx(inSx), sy(inSy)
+   Event(EventType inType=etUnknown,int inX=0,int inY=0,int inValue=0,int inID=0,int inFlags=0,float inScaleX=1,float inScaleY=1,int inDeltaX=0,int inDeltaY=0):
+        type(inType), x(inX), y(inY), value(inValue), id(inID), flags(inFlags), result(erOk), scaleX(inScaleX), scaleY(inScaleY), deltaX(inDeltaX), deltaY(inDeltaY)
    {
    }
 
@@ -104,7 +104,8 @@ struct Event
    int       id;
    int       flags;
    EventResult result;
-   float       sx,sy;
+   float       scaleX, scaleY;
+   int         deltaX, deltaY;
 };
 
 typedef void (*EventHandler)(Event &ioEvent, void *inUserData);
diff --git a/project/src/backend/sdl2/SDL2Stage.cpp b/project/src/backend/sdl2/SDL2Stage.cpp
index 9dfdc8497..a80c5f8ea 100644
--- a/project/src/backend/sdl2/SDL2Stage.cpp
+++ b/project/src/backend/sdl2/SDL2Stage.cpp
@@ -1089,8 +1089,19 @@ void ProcessEvent(SDL_Event &inEvent)
 			}
 		}
 		case SDL_MOUSEMOTION:
-		{
-			Event mouse(etMouseMove, inEvent.motion.x, inEvent.motion.y);
+		{	
+				//default to 0
+			int deltaX = 0;
+			int deltaY = 0;
+
+				//but if we are locking the cursor,
+				//pass the delta in as well through as deltaX
+			if(SDL_GetRelativeMouseMode()) {
+				SDL_GetRelativeMouseState( &deltaX, &deltaY );
+			}
+
+				//int inValue=0, int inID=0, int inFlags=0, float inScaleX=1,float inScaleY=1, int inDeltaX=0,int inDeltaY=0
+			Event mouse(etMouseMove, inEvent.motion.x, inEvent.motion.y, 0, 0, 0, 1.0f, 1.0f, deltaX, deltaY);
 			#if defined(WEBOS) || defined(BLACKBERRY)
 			mouse.value = inEvent.motion.which;
 			mouse.flags |= efLeftDown;
diff --git a/project/src/common/ExternalInterface.cpp b/project/src/common/ExternalInterface.cpp
index 6e12baaa6..6d1ef17ad 100644
--- a/project/src/common/ExternalInterface.cpp
+++ b/project/src/common/ExternalInterface.cpp
@@ -46,8 +46,10 @@ static int _id_type;
 static int _id_x;
 static int _id_y;
 static int _id_z;
-static int _id_sx;
-static int _id_sy;
+static int _id_scaleX;
+static int _id_scaleY;
+static int _id_deltaX;
+static int _id_deltaY;
 static int _id_width;
 static int _id_height;
 static int _id_length;
@@ -137,8 +139,10 @@ extern "C" void InitIDs()
    _id_x = val_id("x");
    _id_y = val_id("y");
    _id_z = val_id("z");
-   _id_sx = val_id("sx");
-   _id_sy = val_id("sy");
+   _id_scaleX = val_id("scaleX");
+   _id_scaleY = val_id("scaleY");
+   _id_deltaX = val_id("deltaX");
+   _id_deltaY = val_id("deltaY");
    _id_width = val_id("width");
    _id_height = val_id("height");
    _id_length = val_id("length");
@@ -1211,8 +1215,10 @@ void external_handler( lime::Event &ioEvent, void *inUserData )
    alloc_field(o,_id_flags,alloc_int(ioEvent.flags));
    alloc_field(o,_id_code,alloc_int(ioEvent.code));
    alloc_field(o,_id_result,alloc_int(ioEvent.result));
-   alloc_field(o,_id_sx,alloc_float(ioEvent.sx));
-   alloc_field(o,_id_sy,alloc_float(ioEvent.sy));
+   alloc_field(o,_id_scaleX,alloc_float(ioEvent.scaleX));
+   alloc_field(o,_id_scaleY,alloc_float(ioEvent.scaleY));
+   alloc_field(o,_id_deltaX,alloc_float(ioEvent.deltaX));
+   alloc_field(o,_id_deltaY,alloc_float(ioEvent.deltaY));
    val_call1(handler->get(), o);
    ioEvent.result = (EventResult)val_int( val_field(o,_id_result) );
 }
diff --git a/project/src/platform/android/AndroidFrame.cpp b/project/src/platform/android/AndroidFrame.cpp
index ae42fbc6d..fe7a2bf1e 100644
--- a/project/src/platform/android/AndroidFrame.cpp
+++ b/project/src/platform/android/AndroidFrame.cpp
@@ -193,8 +193,8 @@ public:
                }
                mouse.value = inID;
                
-               mouse.sx = sizeX;
-               mouse.sy = sizeY;
+               mouse.scaleX = sizeX;
+               mouse.scaleY = sizeY;
 
                //if (inType==etTouchBegin)
                   //ELOG("DOWN %d %f,%f (%s) %f,%f", inID, inX, inY, (mouse.flags & efPrimaryTouch) ? "P":"S", sizeX, sizeY );