private static void AssignOverrideToFields(IUnit unit, Exposed exp, Override ovd)
/// Assigns overriden values to standard (field) generator/layer
{
Type type = unit.GetType();
foreach (Exposed.Entry entry in exp.EntriesById(unit.Id))
{
FieldInfo fieldInfo = type.GetField(entry.name);
if (fieldInfo == null)
{
continue; //might happen in biome, which has not fields, but ovd exposed
}
if (fieldInfo.FieldType != entry.type && !fieldInfo.FieldType.IsArray)
{
throw new Exception("Recorded field type doesn't match generator field type. Possibly generator has changed.");
}
object val;
Calculator.Vector vec = entry.calculator.Calculate(ovd);
if (entry.channel == -1) //non-channel
{
val = vec.Convert(entry.type);
}
else
{
object origVal = fieldInfo.GetValue(unit); //loading original value to take other channels
val = vec.ConvertToChannel(origVal, entry.channel, entry.type);
}
if (entry.arrIndex == -1) //non-array
{
fieldInfo.SetValue(unit, val);
}
else if (unit is Nodes.MatrixGenerators.Blend200 blendGen) //special case for blend node
{
blendGen.layers[entry.arrIndex].opacity = (float)val;
}
else //array
{
Array arr = (Array)fieldInfo.GetValue(unit);
arr.SetValue(val, entry.arrIndex);
fieldInfo.SetValue(unit, arr);
}
}
}
public static IUnit CopyAndAssign(IUnit unit, Exposed exp, Override ovd)
{
IUnit copy = unit.ShallowCopy();
//overriding fields
AssignOverrideToFields(copy, exp, ovd);
//checking biome sub-override table
if (copy is IBiome biome && biome.Override != null)
{
biome.Override = new Override(biome.Override); //copying override table in copy too
AssignOverrideToOverride(exp.EntriesById(unit.Id), biome.Override, ovd);
}
//overriding layers
if (copy is IMultiLayer multi) // or has overrided layer (to assign new
{
bool overrideLayer = false;
foreach (IUnit layer in multi.Layers)
{
if (IsExposed(layer, exp))
{
overrideLayer = true;
}
}
if (overrideLayer)
{
//copy layers collection (since some will be re-assigned)
ICollection <IUnit> srcLayers = multi.Layers;
IUnit[] dstLayers = new IUnit[srcLayers.Count];
srcLayers.CopyTo(dstLayers, 0);
//copy/assign layers in copied collection
for (int l = 0; l < dstLayers.Length; l++)
{
dstLayers[l] = CopyAndAssign(dstLayers[l], exp, ovd);
}
//apply new collection itself
multi.Layers = dstLayers;
}
}
return(copy);
}