open map tools in center of screen upon first open

Don't show the map tools at the bottom-left corner of the map when you first open it, but right where your mouse is.

addons/maptools/XEH_postInitClient.sqf

@@ -13,6 +13,7 @@ GVAR(mapTool_pos) = [0,0];
 GVAR(mapTool_angle) = 0;
 GVAR(mapTool_isDragging) = false;
 GVAR(mapTool_isRotating) = false;
+GVAR(mapTool_isFirstShown) = true;  // used to display it in center of screen when first opened
 
 //Install the event handers for the map tools on the main in-game map
 [{!isNull findDisplay 12},

addons/maptools/functions/fnc_handleMouseMove.sqf

@@ -29,6 +29,12 @@ if (GVAR(mapTool_Shown) == 0) exitWith {false};
 
 private _mousePosition = _control ctrlMapScreenToWorld [_mousePosX, _mousePosY];
 
+// open map tools in center of screen upon first open
+if (GVAR(mapTool_isFirstShown)) then {
+    GVAR(mapTool_pos) = _mousePosition;
+    GVAR(mapTool_isFirstShown) = false;  // we only need to do this once
+};
+
 // Translation
 if (GVAR(mapTool_isDragging)) exitWith {
     GVAR(mapTool_pos) set [0, (GVAR(mapTool_startPos) select 0) + (_mousePosition select 0) - (GVAR(mapTool_startDragPos) select 0)];