Fix adding events to the standard TrItems array.

This fix collects the events in a list, and at the end resizes the array
and adds the events.

The existing code already counts the number of events (in cnt). Thus the
array could be extended before the second loop over activities, and the
events added directly.

Author: rwf-rr

Source/Contrib/TrackViewer/Drawing/DrawTrackDB.cs

@@ -137,7 +137,8 @@ public RouteData(string routePath, MessageDelegate messageDelegate)
                 }
 
                 // adding
-                uint index = 0;
+                int index = TrackDB.TrItemTable.Length;
+                List<TrItem> eventItems = new List<TrItem>();
                 foreach (var file in Directory.GetFiles(directory, "*.act"))
                 {
                     try
@@ -157,8 +158,8 @@ public RouteData(string routePath, MessageDelegate messageDelegate)
                                         eventCategoryLocation.Outcomes.DisplayMessage,
                                         eventCategoryLocation.TileX, eventCategoryLocation.TileZ,
                                         eventCategoryLocation.X, 0, eventCategoryLocation.Z,
-                                        index);
-                                    TrackDB.TrItemTable[index] = eventItem;
+                                        (uint)index);
+                                    eventItems.Add(eventItem);
                                     index++;
                                     found = true;
                                 }
@@ -171,6 +172,12 @@ public RouteData(string routePath, MessageDelegate messageDelegate)
                     catch { }
                 }
 
+                // extend the track items array and append the event items
+                int oldSize = TrackDB.TrItemTable.Length;
+                Array.Resize<TrItem>(ref TrackDB.TrItemTable, index);
+                int newSize = TrackDB.TrItemTable.Length;
+                int eventSize = eventItems.Count;
+                for (int toIdx = oldSize, fromIdx = 0; toIdx < newSize && fromIdx < eventSize; toIdx++, fromIdx++) { TrackDB.TrItemTable[toIdx] = eventItems[fromIdx]; }
             }
         }