fix: Fixed a null ref when trying to draw entity ref array or points array when the array was empty

Author: Cammin

Assets/LDtkUnity/Editor/CustomEditor/SceneDrawer/HandleDrawers/LDtkFieldDrawerPoints.cs

@@ -72,7 +72,7 @@ private Vector2[] GetFieldPoints()
             {
                 _fields.TryGetPointArray(_identifier, out Vector2[] objs);
 
-                List<Vector2> points = new List<Vector2>();
+                List<Vector2> points = new List<Vector2>(objs.Length);
 
                 for (int i = 0; i < objs.Length; i++)
                 {

Assets/LDtkUnity/Runtime/Fields/LDtkFields.cs

@@ -141,20 +141,20 @@ private T[] GetFieldArray<T>(string identifier, LDtkFieldType type, LDtkElementS
 
         private bool TryGetFieldArray<T>(string identifier, LDtkFieldType type, LDtkElementSelector<T> selector, out T[] value, bool log = false)
         {
-            value = null;
-            
             if (!TryGetField(identifier, out LDtkField field))
             {
                 if (log)
                 {
                     GameObject obj = gameObject;
                     LDtkDebug.LogError($"No array field \"{identifier}\" exists in this field component for {obj.name}", obj);
                 }
+                value = Array.Empty<T>();
                 return false;
             }
 
             if (!field.ValidateElementTypes(type, gameObject))
             {
+                value = Array.Empty<T>();
                 return false;
             }
 
@@ -166,6 +166,7 @@ private bool TryGetFieldArray<T>(string identifier, LDtkFieldType type, LDtkElem
                     LDtkDebug.LogError($"Failed to get array field \"{identifier}\"");
                 }
 
+                value = Array.Empty<T>();
                 return false;
             }
 
@@ -176,6 +177,7 @@ private bool TryGetFieldArray<T>(string identifier, LDtkFieldType type, LDtkElem
                     LDtkDebug.LogError($"Array element types does not match, they were not C# type \"{typeof(T).Name}\"");
                 }
 
+                value = Array.Empty<T>();
                 return false;
             }