Add CustomDragDistance setting which overrides DragDistance (CnCNet#980)

Author: 11EJDE11

ClientCore/Settings/UserINISettings.cs

@@ -139,6 +139,7 @@ protected UserINISettings(IniFile iniFile)
 
             ScrollRate = new IntSetting(iniFile, OPTIONS, "ScrollRate", 3);
             DragDistance = new IntSetting(iniFile, OPTIONS, "DragDistance", 4);
+            CustomDragDistance = new IntSetting(iniFile, OPTIONS, "CustomDragDistance", 0);
             DoubleTapInterval = new IntSetting(iniFile, OPTIONS, "DoubleTapInterval", 30);
             Win8CompatMode = new StringSetting(iniFile, OPTIONS, "Win8Compat", "No");
 
@@ -239,6 +240,8 @@ protected UserINISettings(IniFile iniFile)
 
         public IntSetting ScrollRate { get; private set; }
         public IntSetting DragDistance { get; private set; }
+        // When > 0, overrides the auto-scaled DragDistance. Allows players to set a fixed pixel threshold regardless of resolution.
+        public IntSetting CustomDragDistance { get; private set; }
         public IntSetting DoubleTapInterval { get; private set; }
         public StringSetting Win8CompatMode { get; private set; }
 

DXMainClient/DXGUI/Generic/OptionPanels/DisplayOptionsPanel.cs

@@ -25,6 +25,7 @@ namespace DTAClient.DXGUI.Generic.OptionPanels
 {
     class DisplayOptionsPanel : XNAOptionsPanel
     {
+        // Mouse must move at least this many pixels from click point before drag selection activates.
         private const int DRAG_DISTANCE_DEFAULT = 4;
         private const int ORIGINAL_RESOLUTION_WIDTH = 640;
 
@@ -628,7 +629,10 @@ public override bool Save()
             (IniSettings.IngameScreenWidth.Value, IniSettings.IngameScreenHeight.Value) = ingameRes;
 
             // Calculate drag selection distance, scale it with resolution width
-            int dragDistance = ingameRes.Width / ORIGINAL_RESOLUTION_WIDTH * DRAG_DISTANCE_DEFAULT;
+            // CustomDragDistance > 0 overrides auto-scaling for players who need a specific value
+            int dragDistance = IniSettings.CustomDragDistance.Value > 0
+                ? IniSettings.CustomDragDistance.Value
+                : ingameRes.Width / ORIGINAL_RESOLUTION_WIDTH * DRAG_DISTANCE_DEFAULT;
             IniSettings.DragDistance.Value = dragDistance;
 
             var newSelectedRenderer = (DirectDrawWrapper)ddRenderer.SelectedItem.Tag;