fixes for support Unity 2020.1.x

src/Collections/EcsSpan.cs

@@ -25,7 +25,7 @@ namespace DCFApixels.DragonECS
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
             get => _values.Length;
         }
-        public readonly int this[int index]
+        public int this[int index]
         {
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
             get => _values[index];

src/EcsAspect.cs

@@ -142,17 +142,29 @@ namespace DCFApixels.DragonECS
                 foreach (var id in maskInc)
                 {
                     var bit = EcsMaskBit.FromID(id);
-                    if (!r.TryAdd(bit.chankIndex, bit.mask))
+                    if (r.ContainsKey(bit.chankIndex))
+                    {
                         r[bit.chankIndex] = r[bit.chankIndex] | bit.mask;
                     }
+                    else
+                    {
+                        r[bit.chankIndex] = bit.mask;
+                    }
+                }
                 EcsMaskBit[] incMasks = r.Select(o => new EcsMaskBit(o.Key, o.Value)).ToArray();
                 r.Clear();
                 foreach (var id in maskExc)
                 {
                     var bit = EcsMaskBit.FromID(id);
-                    if (!r.TryAdd(bit.chankIndex, bit.mask))
+                    if (r.ContainsKey(bit.chankIndex))
+                    {
                         r[bit.chankIndex] = r[bit.chankIndex] | bit.mask;
                     }
+                    else
+                    {
+                        r[bit.chankIndex] = bit.mask;
+                    }
+                }
                 EcsMaskBit[] excMasks = r.Select(o => new EcsMaskBit(o.Key, o.Value)).ToArray();
 
                 var inc = maskInc.ToArray();
@@ -230,7 +242,6 @@ namespace DCFApixels.DragonECS
         }
         public static EcsMaskBit FromID(int id)
         {
-            short x = 10;
             return new EcsMaskBit(id >> DIV_SHIFT, 1 << (id & MOD_MASK)); //аналогично new EcsMaskBit(id / BITS, 1 << (id % BITS)) но быстрее
         }
         public override string ToString()

src/EcsRunner.cs

@@ -138,12 +138,12 @@ namespace DCFApixels.DragonECS
                     throw new Exception();
                 }
 
-                Type GetRunnerBaseType(Type type)
+                Type GetRunnerBaseType(Type typeX)
                 {
-                    if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(EcsRunner<>))
+                    if (typeX.IsGenericType && typeX.GetGenericTypeDefinition() == typeof(EcsRunner<>))
-                        return type;
+                        return typeX;
-                    if (type.BaseType != null)
+                    if (typeX.BaseType != null)
-                        return GetRunnerBaseType(type.BaseType);
+                        return GetRunnerBaseType(typeX.BaseType);
                     return null;
                 }
                 Type baseType = GetRunnerBaseType(type);
@@ -291,7 +291,7 @@ namespace DCFApixels.DragonECS
                             name = Regex.Replace(name, @"\bEcs|Process\b", "");
                             if (Regex.IsMatch(name, "`\\w{1,}$"))
                             {
-                                var s = name.Split("`");
+                                var s = name.Split("`".ToCharArray());
                                 name = s[0] + $"<{s[1]}>";
                             }
                             _processes.Add(type, new ProcessInterface(type, name));

src/Utils/ReadOnlySpanDummy.cs

@@ -1,5 +1,6 @@
 #if ENABLE_DUMMY_SPAN
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
 using EditorBrowsableAttribute = System.ComponentModel.EditorBrowsableAttribute;
@@ -68,12 +69,14 @@ namespace DCFApixels.DragonECS
         #endregion
 
         #region Object
+#pragma warning disable CS0809 // Óñòàðåâøèé ÷ëåí ïåðåîïðåäåëÿåò íåóñòàðåâøèé ÷ëåí
         [Obsolete("Equals() on ReadOnlySpan will always throw an exception. Use the equality operator instead.")]
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => throw new NotSupportedException();
         [Obsolete("GetHashCode() on ReadOnlySpan will always throw an exception.")]
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override int GetHashCode() => throw new NotSupportedException();
+#pragma warning restore CS0809 // Óñòàðåâøèé ÷ëåí ïåðåîïðåäåëÿåò íåóñòàðåâøèé ÷ëåí
         public override string ToString()
         {
             //if (typeof(T) == typeof(char))
@@ -155,6 +158,19 @@ namespace DCFApixels.DragonECS
         //    return retVal;
         //}
 
+        public void CopyTo(T[] array)
+        {
+            if (_length > array.Length)
+            {
+                throw new ArgumentOutOfRangeException();
+            }
+
+            for (int i = 0; i < _length; i++)
+            {
+                array[i] = _array[i];
+            }
+        }
+
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public ReadOnlySpan<T> Slice(int start)
         {