diff --git a/src/common/engine/d_event.cpp b/src/common/engine/d_event.cpp
index 1e705c67f2..9c612cf3dc 100644
--- a/src/common/engine/d_event.cpp
+++ b/src/common/engine/d_event.cpp
@@ -155,17 +155,17 @@ void PostMouseMove(int xx, int yy)
 
 	if (m_filter)
 	{
-		ev.x = xs_CRoundToInt((x + lastx) / 2);
-		ev.y = xs_CRoundToInt((y + lasty) / 2);
+		ev.x = (x + lastx) / 2;
+		ev.y = (y + lasty) / 2;
 	}
 	else
 	{
-		ev.x = xs_CRoundToInt(x);
-		ev.y = xs_CRoundToInt(y);
+		ev.x = x;
+		ev.y = y;
 	}
 	lastx = x;
 	lasty = y;
-	if (ev.x | ev.y)
+	if (ev.x || ev.y)
 	{
 		ev.type = EV_Mouse;
 		D_PostEvent(&ev);
@@ -192,8 +192,8 @@ FInputEvent::FInputEvent(const event_t *ev)
 		KeyString = FString(char(ev->data1));
 		break;
 	case EV_Mouse:
-		MouseX = ev->x;
-		MouseY = ev->y;
+		MouseX = int(ev->x);
+		MouseY = int(ev->y);
 		break;
 	default:
 		break; // EV_DeviceChange = wat?
diff --git a/src/common/engine/d_eventbase.h b/src/common/engine/d_eventbase.h
index c2b994ae70..992a5f400c 100644
--- a/src/common/engine/d_eventbase.h
+++ b/src/common/engine/d_eventbase.h
@@ -22,8 +22,8 @@ struct event_t
 	int16_t 	data1;		// keys / mouse/joystick buttons
 	int16_t		data2;
 	int16_t		data3;
-	int 		x;			// mouse/joystick x move
-	int 		y;			// mouse/joystick y move
+	float 		x;			// mouse/joystick x move
+	float 		y;			// mouse/joystick y move
 };
 
 
diff --git a/src/d_main.cpp b/src/d_main.cpp
index 7b82ee775b..8f27a9d56b 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -2724,7 +2724,7 @@ static bool System_DispatchEvent(event_t* ev)
 			G_AddViewAngle(turn, true);
 			ev->x = 0;
 		}
-		if ((ev->x | ev->y) == 0)
+		if (ev->x == 0 && ev->y == 0)
 		{
 			return true;
 		}
diff --git a/src/g_game.cpp b/src/g_game.cpp
index 7d247d28c4..d14054c0fd 100644
--- a/src/g_game.cpp
+++ b/src/g_game.cpp
@@ -212,8 +212,8 @@ CVAR (Float,	m_side,			2.f,	CVAR_GLOBALCONFIG|CVAR_ARCHIVE)
 int 			turnheld;								// for accelerative turning 
  
 // mouse values are used once 
-int 			mousex;
-int 			mousey; 		
+float 			mousex;
+float 			mousey; 		
 
 FString			savegamefile;
 FString			savedescription;
@@ -721,7 +721,7 @@ void G_BuildTiccmd (ticcmd_t *cmd)
 	// Handle mice.
 	if (!buttonMap.ButtonDown(Button_Mlook) && !freelook)
 	{
-		forward += (int)((float)mousey * m_forward);
+		forward += xs_CRoundToInt(mousey * m_forward);
 	}
 
 	cmd->ucmd.pitch = LocalViewPitch >> 16;
@@ -733,7 +733,7 @@ void G_BuildTiccmd (ticcmd_t *cmd)
 	}
 
 	if (strafe || lookstrafe)
-		side += (int)((float)mousex * m_side);
+		side += xs_CRoundToInt(mousex * m_side);
 
 	mousex = mousey = 0;
 
diff --git a/src/g_level.cpp b/src/g_level.cpp
index ca99e9fa37..a8cb2ae4b6 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -167,7 +167,7 @@ extern FString BackupSaveName;
 bool savegamerestore;
 int finishstate = FINISH_NoHub;
 
-extern int mousex, mousey;
+extern float mousex, mousey;
 extern bool sendpause, sendsave, sendturn180, SendLand;
 
 void *statcopy;					// for statistics driver