Allow negative scroll values (#13)

* Switch from ushorts to shorts.
Also tweak the LayerManager UI to compensate, re-label a couple of input boxes, and add some extra tooltips.

* Further changes to labels and tooltips to hopefully clear some things up.

ManiacEditor/EditorLayer.cs

@@ -61,13 +61,13 @@ public byte UnknownByte2
             set => _layer.UnknownByte2 = value;
         }
 
-        public ushort UnknownWord1
+        public short UnknownWord1
         {
             get => _layer.UnknownWord1;
             set => _layer.UnknownWord1 = value;
         }
 
-        public ushort UnknownWord2
+        public short UnknownWord2
         {
             get => _layer.UnknownWord2;
             set => _layer.UnknownWord2 = value;

ManiacEditor/HorizontalLayerScroll.cs

@@ -43,8 +43,8 @@ public HorizontalLayerScroll(byte id, ScrollInfo info, IList<ScrollInfoLines> li
 
         public byte UnknownByte1 { get => _scrollInfo.UnknownByte1; set => _scrollInfo.UnknownByte1 = value; }
         public byte UnknownByte2 { get => _scrollInfo.UnknownByte2; set => _scrollInfo.UnknownByte2 = value; }
-        public ushort UnknownWord1 { get => _scrollInfo.UnknownWord1; set => _scrollInfo.UnknownWord1 = value; }
-        public ushort UnknownWord2 { get => _scrollInfo.UnknownWord2; set => _scrollInfo.UnknownWord2 = value; }
+        public short UnknownWord1 { get => _scrollInfo.UnknownWord1; set => _scrollInfo.UnknownWord1 = value; }
+        public short UnknownWord2 { get => _scrollInfo.UnknownWord2; set => _scrollInfo.UnknownWord2 = value; }
 
         public IList<ScrollInfoLines> LinesMapList { get => _linesMapList; }
         public ScrollInfo ScrollInfo { get => _scrollInfo; }

RSDKv5/SceneLayer.cs

@@ -18,8 +18,8 @@ public class SceneLayer
         private ushort _width;
         private ushort _height;
 
-        public ushort UnknownWord1;
-        public ushort UnknownWord2;
+        public short UnknownWord1;
+        public short UnknownWord2;
 
         public List<ScrollInfo> ScrollingInfo = new List<ScrollInfo>();
 
@@ -61,8 +61,8 @@ internal SceneLayer(Reader reader)
             Width = reader.ReadUInt16();
             Height = reader.ReadUInt16();
 
-            UnknownWord1 = reader.ReadUInt16();
-            UnknownWord2 = reader.ReadUInt16();
+            UnknownWord1 = reader.ReadInt16();
+            UnknownWord2 = reader.ReadInt16();
 
             ushort scrolling_info_count = reader.ReadUInt16();
             for (int i = 0; i < scrolling_info_count; ++i)