using SharpDX;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using CodeWalker.Core.Utils;
using CodeWalker.World;

namespace CodeWalker.GameFiles
{
    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapFile : GameFile, PackedFile
    {

        public Meta Meta { get; set; }
        public PsoFile Pso { get; set; }
        public RbfFile Rbf { get; set; }

        public CMapData _CMapData;

        public CMapData CMapData { get { return _CMapData; } set { _CMapData = value; } }
        public CEntityDef[] CEntityDefs { get; set; }
        public CMloInstanceDef[] CMloInstanceDefs { get; set; }
        public CCarGen[] CCarGens { get; set; }
        public CTimeCycleModifier[] CTimeCycleModifiers { get; set; }
        public MetaHash[] physicsDictionaries { get; set; }

        public BoxOccluder[] CBoxOccluders { get; set; }
        public OccludeModel[] COccludeModels { get; set; }


        public string[] Strings { get; set; }
        public YmapEntityDef[] AllEntities;
        public YmapEntityDef[] RootEntities;
        public YmapEntityDef[] MloEntities;

        public YmapFile Parent { get; set; }
        public YmapFile[] ChildYmaps = null;
        public bool MergedWithParent = false;

        public YmapGrassInstanceBatch[] GrassInstanceBatches { get; set; }
        public YmapPropInstanceBatch[] PropInstanceBatches { get; set; }

        public YmapDistantLODLights DistantLODLights { get; set; }

        public YmapLODLights LODLights { get; set; }

        public YmapTimeCycleModifier[] TimeCycleModifiers { get; set; }

        public YmapCarGen[] CarGenerators { get; set; }

        public YmapBoxOccluder[] BoxOccluders { get; set; }
        public YmapOccludeModel[] OccludeModels { get; set; }


        //fields used by the editor:
        public bool HasChanged { get; set; } = false;
        public List<string> SaveWarnings = null;




        public YmapFile() : base(null, GameFileType.Ymap)
        {
        }
        public YmapFile(RpfFileEntry entry) : base(entry, GameFileType.Ymap)
        {
            RpfFileEntry = entry;
        }

        public void Load(byte[] data)
        {
            //direct load from a raw, compressed ymap file (openIV-compatible format)

            RpfFile.LoadResourceFile(this, data, 2);

            Loaded = true;
        }

        public void Load(byte[] data, RpfFileEntry entry)
        {
            Name = entry.Name;
            RpfFileEntry = entry;

            RpfResourceFileEntry resentry = entry as RpfResourceFileEntry;
            if (resentry == null)
            {
                NonMetaLoad(data);
                Loaded = true;
                return;
            }

            ResourceDataReader rd = new ResourceDataReader(resentry, data);

            Meta = rd.ReadBlock<Meta>();//maybe null this after load to reduce memory consumption?



            CMapData = MetaTypes.GetTypedData<CMapData>(Meta, MetaName.CMapData);



            Strings = MetaTypes.GetStrings(Meta);
            if (Strings != null)
            {
                foreach (string str in Strings)
                {
                    JenkIndex.Ensure(str); //just shove them in there
                }
            }

            physicsDictionaries = MetaTypes.GetHashArray(Meta, _CMapData.physicsDictionaries);


            EnsureEntities(Meta); //load all the entity data and create the YmapEntityDefs

            EnsureInstances(Meta);

            EnsureLODLights(Meta);

            EnsureDistantLODLights(Meta);

            EnsureTimeCycleModifiers(Meta);

            EnsureCarGens(Meta);

            EnsureBoxOccluders(Meta);

            EnsureOccludeModels(Meta);

            EnsureContainerLods(Meta);


            #region data block test and old code

            //foreach (var block in Meta.DataBlocks)
            //{
            //    switch (block.StructureNameHash)
            //    {
            //        case (MetaName)MetaTypeName.STRING:
            //        case (MetaName)MetaTypeName.POINTER:
            //        case (MetaName)MetaTypeName.HASH:
            //        case (MetaName)MetaTypeName.UINT:
            //        case (MetaName)MetaTypeName.VECTOR3: //distant lod lights uses this
            //        case MetaName.CMapData:
            //        case MetaName.CEntityDef:
            //        case MetaName.CTimeCycleModifier: //these sections are handled already
            //        case MetaName.CCarGen:
            //        case MetaName.CLightAttrDef:
            //        case MetaName.CMloInstanceDef:
            //        case MetaName.CExtensionDefDoor:
            //        case MetaName.CExtensionDefLightEffect:
            //        case MetaName.CExtensionDefSpawnPointOverride:
            //        case MetaName.rage__fwGrassInstanceListDef: //grass instance buffer
            //        case MetaName.rage__fwGrassInstanceListDef__InstanceData: //grass instance buffer data
            //            break;
            //        case MetaName.PhVerletClothCustomBounds: //these sections still todo..
            //        case MetaName.SectionUNKNOWN1:
            //        case MetaName.SectionUNKNOWN5://occlusion vertex data container
            //        case MetaName.SectionUNKNOWN7://occlusion related?
            //            break;
            //        case (MetaName)17: //vertex data - occlusion related - SectionUNKNOWN5
            //            break;
            //        case (MetaName)33: //what is this? maybe lodlights related
            //            break;
            //        default:
            //            break;
            //    }
            //}



            //MetaTypes.ParseMetaData(Meta);

            //string shortname = resentry.Name.Substring(0, resentry.Name.LastIndexOf('.'));
            //uint namehash = JenkHash.GenHash(shortname);





            //CLightAttrDefs = MetaTypes.GetTypedDataArray<CLightAttrDef>(Meta, MetaName.CLightAttrDef);
            //if (CLightAttrDefs != null)
            //{ }


            //var unk5s = MetaTypes.GetTypedDataArray<SectionUNKNOWN5>(Meta, MetaName.SectionUNKNOWN5);
            //if (unk5s != null) //used in occlusion ymaps
            //{
            //    foreach (var unk5 in unk5s)
            //    {
            //        if ((unk5.verts.Ptr > 0) && (unk5.verts.Ptr <= (ulong)Meta.DataBlocks.Length))
            //        {
            //            var indicesoffset = unk5.numVertsInBytes;
            //            var datablock = Meta.DataBlocks[((int)unk5.verts.Ptr) - 1];
            //            if (datablock != null)
            //            { }//vertex data... occlusion mesh?
            //        }
            //    }
            //}

            //var unk7s = MetaTypes.GetTypedDataArray<SectionUNKNOWN7>(Meta, MetaName.SectionUNKNOWN7);
            //if (unk7s != null)
            //{ } //used in occlusion ymaps

            //var unk10s = MetaTypes.GetTypedDataArray<SectionUNKNOWN10>(Meta, MetaName.SectionUNKNOWN10);
            //if (unk10s != null)
            //{ } //entity pointer array.. 

            //CDoors = MetaTypes.GetTypedDataArray<CExtensionDefDoor>(Meta, MetaName.CExtensionDefDoor);
            //if (CDoors != null)
            //{ } //needs work - doors can be different types? not enough bytes for one

            //CExtLightEffects = MetaTypes.GetTypedDataArray<CExtensionDefLightEffect>(Meta, MetaName.CExtensionDefLightEffect);
            //if (CExtLightEffects != null)
            //{ }

            //CSpawnOverrides = MetaTypes.GetTypedDataArray<CExtensionDefSpawnPointOverride>(Meta, MetaName.CExtensionDefSpawnPointOverride);
            //if (CSpawnOverrides != null)
            //{ }

            #endregion
        }



        private void NonMetaLoad(byte[] data)
        {
            //non meta not supported yet! but see what's in there...
            MemoryStream ms = new MemoryStream(data);
            if (RbfFile.IsRBF(ms))
            {
                Rbf = new RbfFile();
                Rbf.Load(ms);
            }
            else if (PsoFile.IsPSO(ms))
            {
                Pso = new PsoFile();
                Pso.Load(ms);
                //PsoTypes.EnsurePsoTypes(Pso);
            }
            else
            {
            }

        }



        private void EnsureEntities(Meta Meta)
        {
            //CMloInstanceDefs = MetaTypes.ConvertDataArray<CMloInstanceDef>(Meta, MetaName.CMloInstanceDef, CMapData.entities);
            CMloInstanceDefs = MetaTypes.GetTypedDataArray<CMloInstanceDef>(Meta, MetaName.CMloInstanceDef);
            if (CMloInstanceDefs != null)
            { }

            var eptrs = MetaTypes.GetPointerArray(Meta, _CMapData.entities);
            //CEntityDefs = MetaTypes.ConvertDataArray<CEntityDef>(Meta, MetaName.CEntityDef, CMapData.entities);
            CEntityDefs = MetaTypes.GetTypedDataArray<CEntityDef>(Meta, MetaName.CEntityDef);
            if (CEntityDefs != null)
            { }




            int instcount = 0;
            if (CEntityDefs != null) instcount += CEntityDefs.Length;
            if (CMloInstanceDefs != null) instcount += CMloInstanceDefs.Length;

            if (instcount > 0)
            {

                //build the entity hierarchy.
                List<YmapEntityDef> roots = new List<YmapEntityDef>(instcount);
                List<YmapEntityDef> alldefs = new List<YmapEntityDef>(instcount);
                List<YmapEntityDef> mlodefs = null;

                if (CEntityDefs != null)
                {
                    for (int i = 0; i < CEntityDefs.Length; i++)
                    {
                        YmapEntityDef d = new YmapEntityDef(this, i, ref CEntityDefs[i]);
                        alldefs.Add(d);
                    }
                }
                if (CMloInstanceDefs != null)
                {
                    mlodefs = new List<YmapEntityDef>();
                    for (int i = 0; i < CMloInstanceDefs.Length; i++)
                    {
                        YmapEntityDef d = new YmapEntityDef(this, i, ref CMloInstanceDefs[i]);
                        uint[] defentsets = MetaTypes.GetUintArray(Meta, CMloInstanceDefs[i].defaultEntitySets);
                        if (d.MloInstance != null)
                        {
                            d.MloInstance.defaultEntitySets = defentsets;
                        }
                        alldefs.Add(d);
                        mlodefs.Add(d);
                    }
                }


                for (int i = 0; i < alldefs.Count; i++)
                {
                    YmapEntityDef d = alldefs[i];
                    int pind = d._CEntityDef.parentIndex;
                    bool isroot = false;
                    if ((pind < 0) || (pind >= alldefs.Count) || (pind >= i)) //index check? might be a problem
                    {
                        isroot = true;
                    }
                    else
                    {
                        YmapEntityDef p = alldefs[pind];
                        if ((p._CEntityDef.lodLevel <= d._CEntityDef.lodLevel) ||
                            ((p._CEntityDef.lodLevel == rage__eLodType.LODTYPES_DEPTH_ORPHANHD) &&
                             (d._CEntityDef.lodLevel != rage__eLodType.LODTYPES_DEPTH_ORPHANHD)))
                        {
                            isroot = true;
                            p = null;
                        }
                    }

                    if (isroot)
                    {
                        roots.Add(d);
                    }
                    else
                    {
                        YmapEntityDef p = alldefs[pind];
                        p.AddChild(d);
                    }
                }
                for (int i = 0; i < alldefs.Count; i++)
                {
                    alldefs[i].ChildListToArray();
                }

                AllEntities = alldefs.ToArray();
                RootEntities = roots.ToArray();
                if (mlodefs != null)
                {
                    MloEntities = mlodefs.ToArray();
                }


                foreach (var ent in AllEntities)
                {
                    ent.Extensions = MetaTypes.GetExtensions(Meta, ent._CEntityDef.extensions);
                }
            }

        }

        private void EnsureInstances(Meta Meta)
        {
            if (_CMapData.instancedData.GrassInstanceList.Count1 != 0)
            {
                rage__fwGrassInstanceListDef[] batches = MetaTypes.ConvertDataArray<rage__fwGrassInstanceListDef>(Meta, MetaName.rage__fwGrassInstanceListDef, _CMapData.instancedData.GrassInstanceList);
                YmapGrassInstanceBatch[] gbatches = new YmapGrassInstanceBatch[batches.Length];
                for (int i = 0; i < batches.Length; i++)
                {
                    var batch = batches[i];
                    rage__fwGrassInstanceListDef__InstanceData[] instdatas = MetaTypes.ConvertDataArray<rage__fwGrassInstanceListDef__InstanceData>(Meta, MetaName.rage__fwGrassInstanceListDef__InstanceData, batch.InstanceList);
                    YmapGrassInstanceBatch gbatch = new YmapGrassInstanceBatch();
                    gbatch.Ymap = this;
                    gbatch.Batch = batch;
                    gbatch.Instances = instdatas;
                    gbatch.Position = (batch.BatchAABB.min.XYZ() + batch.BatchAABB.max.XYZ()) * 0.5f;
                    gbatch.Radius = (batch.BatchAABB.max.XYZ() - gbatch.Position).Length();
                    gbatch.AABBMin = (batch.BatchAABB.min.XYZ());
                    gbatch.AABBMax = (batch.BatchAABB.max.XYZ());
                    gbatches[i] = gbatch;
                }
                GrassInstanceBatches = gbatches;
            }
            if (_CMapData.instancedData.PropInstanceList.Count1 != 0)
            {
            }
        }

        private void EnsureLODLights(Meta Meta)
        {
            if (_CMapData.LODLightsSOA.direction.Count1 != 0)
            {
                var soa = _CMapData.LODLightsSOA;
                LODLights = new YmapLODLights();
                LODLights.Ymap = this;
                LODLights.CLODLight = soa;
                LODLights.direction = MetaTypes.ConvertDataArray<MetaVECTOR3>(Meta, MetaName.FloatXYZ, soa.direction);
                LODLights.falloff = MetaTypes.GetFloatArray(Meta, soa.falloff);
                LODLights.falloffExponent = MetaTypes.GetFloatArray(Meta, soa.falloffExponent);
                LODLights.timeAndStateFlags = MetaTypes.GetUintArray(Meta, soa.timeAndStateFlags);
                LODLights.hash = MetaTypes.GetUintArray(Meta, soa.hash);
                LODLights.coneInnerAngle = MetaTypes.GetByteArray(Meta, soa.coneInnerAngle);
                LODLights.coneOuterAngleOrCapExt = MetaTypes.GetByteArray(Meta, soa.coneOuterAngleOrCapExt);
                LODLights.coronaIntensity = MetaTypes.GetByteArray(Meta, soa.coronaIntensity);
            }
        }

        private void EnsureDistantLODLights(Meta Meta)
        {
            if (_CMapData.DistantLODLightsSOA.position.Count1 != 0)
            {
                var soa = _CMapData.DistantLODLightsSOA;
                DistantLODLights = new YmapDistantLODLights();
                DistantLODLights.Ymap = this;
                DistantLODLights.CDistantLODLight = soa;
                DistantLODLights.colours = MetaTypes.GetUintArray(Meta, soa.RGBI);
                DistantLODLights.positions = MetaTypes.ConvertDataArray<MetaVECTOR3>(Meta, MetaName.FloatXYZ, soa.position);
                DistantLODLights.CalcBB();
            }
        }

        private void EnsureTimeCycleModifiers(Meta Meta)
        {
            CTimeCycleModifiers = MetaTypes.ConvertDataArray<CTimeCycleModifier>(Meta, MetaName.CTimeCycleModifier, _CMapData.timeCycleModifiers);
            if (CTimeCycleModifiers != null)
            {
                TimeCycleModifiers = new YmapTimeCycleModifier[CTimeCycleModifiers.Length];
                for (int i = 0; i < CTimeCycleModifiers.Length; i++)
                {
                    YmapTimeCycleModifier tcm = new YmapTimeCycleModifier();
                    tcm.Ymap = this;
                    tcm.CTimeCycleModifier = CTimeCycleModifiers[i];
                    tcm.BBMin = tcm.CTimeCycleModifier.minExtents;
                    tcm.BBMax = tcm.CTimeCycleModifier.maxExtents;
                    TimeCycleModifiers[i] = tcm;
                }
            }
        }

        private void EnsureCarGens(Meta Meta)
        {

            CCarGens = MetaTypes.ConvertDataArray<CCarGen>(Meta, MetaName.CCarGen, _CMapData.carGenerators);
            if (CCarGens != null)
            {
                //string str = MetaTypes.GetTypesInitString(resentry, Meta); //to generate structinfos and enuminfos
                CarGenerators = new YmapCarGen[CCarGens.Length];
                for (int i = 0; i < CCarGens.Length; i++)
                {
                    CarGenerators[i] = new YmapCarGen(this, CCarGens[i]);
                }
            }
        }

        private void EnsureBoxOccluders(Meta meta)
        {
            CBoxOccluders = MetaTypes.ConvertDataArray<BoxOccluder>(Meta, MetaName.BoxOccluder, _CMapData.boxOccluders);
            if (CBoxOccluders != null)
            {
                BoxOccluders = new YmapBoxOccluder[CBoxOccluders.Length];
                for (int i = 0; i < CBoxOccluders.Length; i++)
                {
                    BoxOccluders[i] = new YmapBoxOccluder(this, CBoxOccluders[i]);
                    BoxOccluders[i].Index = i;
                }
            }
        }

        private void EnsureOccludeModels(Meta meta)
        {
            COccludeModels = MetaTypes.ConvertDataArray<OccludeModel>(Meta, MetaName.OccludeModel, _CMapData.occludeModels);
            if (COccludeModels != null)
            {
                OccludeModels = new YmapOccludeModel[COccludeModels.Length];
                for (int i = 0; i < COccludeModels.Length; i++)
                {
                    OccludeModels[i] = new YmapOccludeModel(this, COccludeModels[i]);
                    OccludeModels[i].Index = i;
                    OccludeModels[i].Load(Meta);

                }
            }
        }

        private void EnsureContainerLods(Meta meta)
        {

            //TODO: containerLods
            if (_CMapData.containerLods.Count1 > 0)
            {
                //string str = MetaTypes.GetTypesInitString(Meta); //to generate structinfos and enuminfos


            }

        }


        public void BuildCEntityDefs()
        {
            //recreates the CEntityDefs and CMloInstanceDefs arrays from AllEntities.
            //TODO: save entity extensions!!?

            CEntityDefs = null;
            CMloInstanceDefs = null;
            if (AllEntities == null)
            {
                return;
            }


            List<CEntityDef> centdefs = new List<CEntityDef>();
            List<CMloInstanceDef> cmlodefs = new List<CMloInstanceDef>();

            for (int i = 0; i < AllEntities.Length; i++)
            {
                var ent = AllEntities[i];
                if (ent.MloInstance != null)
                {
                    cmlodefs.Add(ent.MloInstance.Instance);
                }
                else
                {
                    centdefs.Add(ent._CEntityDef);
                }
            }

            if (centdefs.Count > 0)
            {
                CEntityDefs = centdefs.ToArray();
            }
            if (cmlodefs.Count > 0)
            {
                CMloInstanceDefs = cmlodefs.ToArray();
            }
        }
        public void BuildCCarGens()
        {
            //recreates the CCarGens array from CarGenerators.
            if (CarGenerators == null)
            {
                CCarGens = null;
                return;
            }

            int count = CarGenerators.Length;
            CCarGens = new CCarGen[count];
            for (int i = 0; i < count; i++)
            {
                CCarGens[i] = CarGenerators[i].CCarGen;
            }
        }

        public void BuildInstances()
        {
            if (GrassInstanceBatches == null)
            {
                return;
            }

            if (PropInstanceBatches == null)
            { }

            int count = GrassInstanceBatches.Length;
            for (int i = 0; i < count; i++)
            {
                var g = GrassInstanceBatches[i];
                var b = g.Batch;

                var aabb = new rage__spdAABB();
                aabb.min = new Vector4(g.AABBMin, 0);
                aabb.max = new Vector4(g.AABBMax, 0);

                b.BatchAABB = aabb;

                GrassInstanceBatches[i].Batch = b;
            }
        }

        public byte[] Save()
        {
            //direct save to a raw, compressed ymap file (openIV-compatible format)


            //since Ymap object contents have been modified, need to recreate the arrays which are what is saved.
            BuildCEntityDefs(); //technically this isn't required anymore since the CEntityDefs is no longer used for saving.
            BuildCCarGens();
            BuildInstances();

            //TODO:
            //BuildLodLights();
            //BuildDistantLodLights();
            //BuildTimecycleModifiers(); //already being saved - update them..
            //BuildBoxOccluders();
            //BuildOccludeModels();
            //BuildContainerLods();



            MetaBuilder mb = new MetaBuilder();


            var mdb = mb.EnsureBlock(MetaName.CMapData);

            CMapData mapdata = CMapData;



            if ((AllEntities != null) && (AllEntities.Length > 0))
            {
                for (int i = 0; i < AllEntities.Length; i++)
                {
                    var ent = AllEntities[i]; //save the extensions first..
                    ent._CEntityDef.extensions = mb.AddWrapperArrayPtr(ent.Extensions);
                }

                MetaPOINTER[] ptrs = new MetaPOINTER[AllEntities.Length];
                for (int i = 0; i < AllEntities.Length; i++)
                {
                    var ent = AllEntities[i];
                    if (ent.MloInstance != null)
                    {
                        ent.MloInstance.UpdateDefaultEntitySets();

                        ent.MloInstance._Instance.CEntityDef = ent.CEntityDef; //overwrite with all the updated values..
                        ent.MloInstance._Instance.defaultEntitySets = mb.AddUintArrayPtr(ent.MloInstance.defaultEntitySets);

                        ptrs[i] = mb.AddItemPtr(MetaName.CMloInstanceDef, ent.MloInstance.Instance);
                    }
                    else
                    {
                        ptrs[i] = mb.AddItemPtr(MetaName.CEntityDef, ent.CEntityDef);
                    }
                }
                mapdata.entities = mb.AddPointerArray(ptrs);
            }
            else
            {
                mapdata.entities = new Array_StructurePointer();
            }

            mapdata.timeCycleModifiers = mb.AddItemArrayPtr(MetaName.CTimeCycleModifier, CTimeCycleModifiers);

            mapdata.physicsDictionaries = mb.AddHashArrayPtr(physicsDictionaries);

            mapdata.carGenerators = mb.AddItemArrayPtr(MetaName.CCarGen, CCarGens);

            //clear everything out for now - TODO: fix
            if (mapdata.containerLods.Count1 != 0) LogSaveWarning("containerLods were not saved. (TODO!)");
            if (mapdata.occludeModels.Count1 != 0) LogSaveWarning("occludeModels were not saved. (TODO!)");
            if (mapdata.boxOccluders.Count1 != 0) LogSaveWarning("boxOccluders were not saved. (TODO!)");
            if (mapdata.instancedData.PropInstanceList.Count1 != 0) LogSaveWarning("instancedData.PropInstanceList was not saved. (TODO!)");
            if (mapdata.LODLightsSOA.direction.Count1 != 0) LogSaveWarning("LODLightsSOA was not saved. (TODO!)");
            if (mapdata.DistantLODLightsSOA.position.Count1 != 0) LogSaveWarning("DistantLODLightsSOA was not saved. (TODO!)");
            mapdata.containerLods = new Array_Structure();
            mapdata.occludeModels = new Array_Structure();
            mapdata.boxOccluders = new Array_Structure();

            if ((GrassInstanceBatches != null) && (GrassInstanceBatches.Length > 0))
            {
                var instancedData = new rage__fwInstancedMapData();
                rage__fwGrassInstanceListDef[] batches = new rage__fwGrassInstanceListDef[GrassInstanceBatches.Length];
                for (int i = 0; i < GrassInstanceBatches.Length; i++)
                {
                    var batch = GrassInstanceBatches[i];

                    if (batch != null)
                    {
                        var b = batch.Batch;
                        b.InstanceList = mb.AddItemArrayPtr(MetaName.rage__fwGrassInstanceListDef__InstanceData, batch.Instances);
                        batches[i] = b;
                    }
                }

                instancedData.GrassInstanceList = mb.AddItemArrayPtr(MetaName.rage__fwGrassInstanceListDef, batches);
                mapdata.instancedData = instancedData;
            }
            else
            {
                mapdata.instancedData = new rage__fwInstancedMapData();
            }

            if ((LODLights != null) && (LODLights.direction != null))
            {
                var soa = new CLODLight();
                soa.direction = mb.AddItemArrayPtr(MetaName.FloatXYZ, LODLights.direction);
                soa.falloff = mb.AddFloatArrayPtr(LODLights.falloff);
                soa.falloffExponent = mb.AddFloatArrayPtr(LODLights.falloffExponent);
                soa.timeAndStateFlags = mb.AddUintArrayPtr(LODLights.timeAndStateFlags);
                soa.hash = mb.AddUintArrayPtr(LODLights.hash);
                soa.coneInnerAngle = mb.AddByteArrayPtr(LODLights.coneInnerAngle);
                soa.coneOuterAngleOrCapExt = mb.AddByteArrayPtr(LODLights.coneOuterAngleOrCapExt);
                soa.coronaIntensity = mb.AddByteArrayPtr(LODLights.coronaIntensity);
                mapdata.LODLightsSOA = soa;
            }
            else
            {
                mapdata.LODLightsSOA = new CLODLight();
            }
            if ((DistantLODLights != null) && (DistantLODLights.positions != null))
            {
                var soa = DistantLODLights.CDistantLODLight;//to copy base vars
                soa.position = mb.AddItemArrayPtr(MetaName.FloatXYZ, DistantLODLights.positions);
                soa.RGBI = mb.AddUintArrayPtr(DistantLODLights.colours);
                mapdata.DistantLODLightsSOA = soa;
            }
            else
            {
                mapdata.DistantLODLightsSOA = new CDistantLODLight();
            }



            var block = new CBlockDesc();
            block.name = mb.AddStringPtr(Path.GetFileNameWithoutExtension(Name));
            block.exportedBy = mb.AddStringPtr("CodeWalker");
            block.time = mb.AddStringPtr(DateTime.UtcNow.ToString("dd MMMM yyyy HH:mm"));

            mapdata.block = block;


            string name = Path.GetFileNameWithoutExtension(Name);
            uint nameHash = JenkHash.GenHash(name);
            mapdata.name = new MetaHash(nameHash);//make sure name is upto date...


            mb.AddItem(MetaName.CMapData, mapdata);



            //make sure all the relevant structure and enum infos are present.
            if ((GrassInstanceBatches != null) && (GrassInstanceBatches.Length > 0))
            {
                mb.AddStructureInfo(MetaName.rage__spdAABB);
                mb.AddStructureInfo(MetaName.rage__fwGrassInstanceListDef__InstanceData);
                mb.AddStructureInfo(MetaName.rage__fwGrassInstanceListDef);
            }
            mb.AddStructureInfo(MetaName.rage__fwInstancedMapData);
            mb.AddStructureInfo(MetaName.CLODLight);
            mb.AddStructureInfo(MetaName.CDistantLODLight);
            mb.AddStructureInfo(MetaName.CBlockDesc);
            mb.AddStructureInfo(MetaName.CMapData);
            mb.AddStructureInfo(MetaName.CEntityDef);
            mb.AddStructureInfo(MetaName.CMloInstanceDef);
            mb.AddStructureInfo(MetaName.CTimeCycleModifier);
            if ((CCarGens != null) && (CCarGens.Length > 0))
            {
                mb.AddStructureInfo(MetaName.CCarGen);
            }
            if ((LODLights != null) && (LODLights.direction != null))
            {
                mb.AddStructureInfo(MetaName.FloatXYZ);
            }
            if ((DistantLODLights != null) && (DistantLODLights.positions != null))
            {
                mb.AddStructureInfo(MetaName.FloatXYZ);
            }

            mb.AddEnumInfo(MetaName.rage__eLodType); //LODTYPES_
            mb.AddEnumInfo(MetaName.rage__ePriorityLevel);  //PRI_


            Meta meta = mb.GetMeta();

            byte[] data = ResourceBuilder.Build(meta, 2); //ymap is version 2...


            return data;
        }

        private void LogSaveWarning(string w)
        {
            if (SaveWarnings == null) SaveWarnings = new List<string>();
            SaveWarnings.Add(w);
        }




        public void EnsureChildYmaps(GameFileCache gfc)
        {
            if (ChildYmaps == null)
            {
                //no children here... look for child ymap....
                var node = gfc.GetMapNode(RpfFileEntry.ShortNameHash);
                if ((node != null) && (node.Children != null) && (node.Children.Length > 0))
                {
                    ChildYmaps = new YmapFile[node.Children.Length];
                    for (int i = 0; i < ChildYmaps.Length; i++)
                    {
                        var chash = node.Children[i].Name;
                        ChildYmaps[i] = gfc.GetYmap(chash);
                        if (ChildYmaps[i] == null)
                        {
                            //couldn't find child ymap..
                        }
                    }
                }
            }


            bool needupd = false;
            if (ChildYmaps != null)
            {
                for (int i = 0; i < ChildYmaps.Length; i++)
                {
                    var cmap = ChildYmaps[i];
                    if (cmap == null) continue; //nothing here..
                    if (!cmap.Loaded)
                    {
                        //ChildYmaps[i] = gfc.GetYmap(cmap.Hash); //incase no load was requested.
                        cmap = gfc.GetYmap(cmap.Key.Hash);
                        ChildYmaps[i] = cmap;
                    }
                    if ((cmap.Loaded) && (!cmap.MergedWithParent))
                    {
                        needupd = true;
                    }
                }
            }

            if ((ChildYmaps != null) && needupd)
            {
                List<YmapEntityDef> newroots = new List<YmapEntityDef>(RootEntities);
                for (int i = 0; i < ChildYmaps.Length; i++)
                {
                    var cmap = ChildYmaps[i];
                    if (cmap == null) continue; //nothing here..
                    //cmap.EnsureChildYmaps();
                    if ((cmap.Loaded) && (!cmap.MergedWithParent))
                    {
                        cmap.MergedWithParent = true;
                        if (cmap.RootEntities != null)
                        {
                            foreach (var rcent in cmap.RootEntities)
                            {
                                int pind = rcent._CEntityDef.parentIndex;
                                if (pind < 0)
                                {
                                    if (rcent._CEntityDef.lodLevel != rage__eLodType.LODTYPES_DEPTH_ORPHANHD)
                                    {
                                    }
                                    //pind = 0;
                                }
                                if ((pind >= 0) && (pind < AllEntities.Length))
                                {
                                    var pentity = AllEntities[pind];
                                    pentity.AddChild(rcent);
                                }
                                else
                                {
                                    //TODO: fix this!!
                                    //newroots.Add(rcent); //not sure this is the right approach.
                                    //////rcent.Owner = this;
                                }
                            }
                        }
                    }
                }
                if (AllEntities != null)
                {
                    for (int i = 0; i < AllEntities.Length; i++)
                    {
                        AllEntities[i].ChildListToMergedArray();
                    }
                }

                RootEntities = newroots.ToArray();
            }


        }




        public void AddEntity(YmapEntityDef ent)
        {
            //used by the editor to add to the ymap.

            List<YmapEntityDef> allents = new List<YmapEntityDef>();
            if (AllEntities != null) allents.AddRange(AllEntities);
            ent.Index = allents.Count;
            ent.Ymap = this;
            allents.Add(ent);
            AllEntities = allents.ToArray();


            if ((ent.Parent == null) || (ent.Parent.Ymap != this))
            {
                //root entity, add to roots.

                List<YmapEntityDef> rootents = new List<YmapEntityDef>();
                if (RootEntities != null) rootents.AddRange(RootEntities);
                rootents.Add(ent);
                RootEntities = rootents.ToArray();
            }

            HasChanged = true;
        }

        public bool RemoveEntity(YmapEntityDef ent)
        {
            //used by the editor to remove from the ymap.
            if (ent == null) return false;

            var res = true;

            int idx = ent.Index;
            List<YmapEntityDef> newAllEntities = new List<YmapEntityDef>();
            List<YmapEntityDef> newRootEntities = new List<YmapEntityDef>();

            for (int i = 0; i < AllEntities.Length; i++)
            {
                var oent = AllEntities[i];
                oent.Index = newAllEntities.Count;
                if (oent != ent) newAllEntities.Add(oent);
                else if (i != idx)
                {
                    res = false; //indexes didn't match.. this shouldn't happen!
                }
            }
            for (int i = 0; i < RootEntities.Length; i++)
            {
                var oent = RootEntities[i];
                if (oent != ent) newRootEntities.Add(oent);
            }

            if ((AllEntities.Length == newAllEntities.Count) || (RootEntities.Length == newRootEntities.Count))
            {
                res = false;
            }

            AllEntities = newAllEntities.ToArray();
            RootEntities = newRootEntities.ToArray();

            HasChanged = true;

            return res;
        }


        public void AddCarGen(YmapCarGen cargen)
        {
            List<YmapCarGen> cargens = new List<YmapCarGen>();
            if (CarGenerators != null) cargens.AddRange(CarGenerators);
            cargen.Ymap = this;
            cargens.Add(cargen);
            CarGenerators = cargens.ToArray();

            HasChanged = true;
        }

        public bool RemoveCarGen(YmapCarGen cargen)
        {
            if (cargen == null) return false;

            List<YmapCarGen> newcargens = new List<YmapCarGen>();

            if (CarGenerators != null)
            {
                for (int i = 0; i < CarGenerators.Length; i++)
                {
                    var cg = CarGenerators[i];
                    if (cg != cargen)
                    {
                        newcargens.Add(cg);
                    }
                }
                if (newcargens.Count == CarGenerators.Length)
                {
                    return false; //nothing removed... wasn't present?
                }
            }


            CarGenerators = newcargens.ToArray();

            HasChanged = true;

            return true;
        }


        public void AddGrassBatch(YmapGrassInstanceBatch newbatch)
        {
            List<YmapGrassInstanceBatch> batches = new List<YmapGrassInstanceBatch>();
            if (GrassInstanceBatches != null) batches.AddRange(GrassInstanceBatches);
            newbatch.Ymap = this;
            batches.Add(newbatch);
            GrassInstanceBatches = batches.ToArray();

            HasChanged = true;
            UpdateGrassPhysDict(true);
        }

        public bool RemoveGrassBatch(YmapGrassInstanceBatch batch)
        {
            if (batch == null) return false;

            List<YmapGrassInstanceBatch> batches = new List<YmapGrassInstanceBatch>();

            if (GrassInstanceBatches != null)
            {
                for (int i = 0; i < GrassInstanceBatches.Length; i++)
                {
                    var gb = GrassInstanceBatches[i];
                    if (gb != batch)
                    {
                        batches.Add(gb);
                    }
                }
                if (batches.Count == GrassInstanceBatches.Length)
                {
                    return false; //nothing removed... wasn't present?
                }
            }

            if (batches.Count <= 0)
            {
                UpdateGrassPhysDict(false);
            }

            GrassInstanceBatches = batches.ToArray();

            HasChanged = true;

            return true;
        }




        public bool CalcFlags()
        {
            uint flags = 0;
            uint contentFlags = 0;

            if (AllEntities != null)
            {
                foreach (var yent in AllEntities)
                {
                    switch (yent._CEntityDef.lodLevel)
                    {
                        case rage__eLodType.LODTYPES_DEPTH_ORPHANHD:
                        case rage__eLodType.LODTYPES_DEPTH_HD:
                            contentFlags = SetBit(contentFlags, 0); //1
                            break;
                        case rage__eLodType.LODTYPES_DEPTH_LOD:
                            contentFlags = SetBit(contentFlags, 1); //2
                            flags = SetBit(flags, 1); //2
                            break;
                        case rage__eLodType.LODTYPES_DEPTH_SLOD1:
                            contentFlags = SetBit(contentFlags, 4); //16
                            flags = SetBit(flags, 1); //2
                            break;
                        case rage__eLodType.LODTYPES_DEPTH_SLOD2:
                        case rage__eLodType.LODTYPES_DEPTH_SLOD3:
                        case rage__eLodType.LODTYPES_DEPTH_SLOD4:
                            contentFlags = SetBit(contentFlags, 2); //4
                            contentFlags = SetBit(contentFlags, 4); //16
                            flags = SetBit(flags, 1); //2
                            break;
                    }
                    if (yent.MloInstance != null)
                    {
                        contentFlags = SetBit(contentFlags, 3); //8  //(interior instance)
                    }
                }
            }

            if ((CMloInstanceDefs != null) && (CMloInstanceDefs.Length > 0))
            {
                contentFlags = SetBit(contentFlags, 3); //8  //(interior instance) //is this still necessary?
            }
            if ((physicsDictionaries != null) && (physicsDictionaries.Length > 0))
            {
                contentFlags = SetBit(contentFlags, 6); //64
            }
            if ((GrassInstanceBatches != null) && (GrassInstanceBatches.Length > 0))
            {
                contentFlags = SetBit(contentFlags, 10); //64
            }


            bool change = false;
            if (_CMapData.flags != flags)
            {
                _CMapData.flags = flags;
                change = true;
            }
            if (_CMapData.contentFlags != contentFlags)
            {
                _CMapData.contentFlags = contentFlags;
                change = true;
            }
            return change;
        }

        public bool CalcExtents()
        {
            Vector3 emin = new Vector3(float.MaxValue);
            Vector3 emax = new Vector3(float.MinValue);
            Vector3 smin = new Vector3(float.MaxValue);
            Vector3 smax = new Vector3(float.MinValue);
            Vector3[] c = new Vector3[8];
            Vector3[] s = new Vector3[8];

            if (AllEntities != null)
            {
                for (int i = 0; i < AllEntities.Length; i++)
                {
                    var ent = AllEntities[i];
                    var arch = ent.Archetype;
                    var ori = ent.Orientation;
                    float loddist = ent._CEntityDef.lodDist;

                    Vector3 bbmin = ent.Position - ent.BSRadius; //sphere
                    Vector3 bbmax = ent.Position + ent.BSRadius;
                    Vector3 sbmin = bbmin - loddist;
                    Vector3 sbmax = bbmax + loddist;
                    if (arch != null)
                    {
                        if (loddist <= 0.0f)
                        {
                            loddist = arch.LodDist;
                        }

                        Vector3 abmin = arch.BBMin * ent.Scale; //entity box
                        Vector3 abmax = arch.BBMax * ent.Scale;
                        c[0] = abmin;
                        c[1] = new Vector3(abmin.X, abmin.Y, abmax.Z);
                        c[2] = new Vector3(abmin.X, abmax.Y, abmin.Z);
                        c[3] = new Vector3(abmin.X, abmax.Y, abmax.Z);
                        c[4] = new Vector3(abmax.X, abmin.Y, abmin.Z);
                        c[5] = new Vector3(abmax.X, abmin.Y, abmax.Z);
                        c[6] = new Vector3(abmax.X, abmax.Y, abmin.Z);
                        c[7] = abmax;

                        abmin = arch.BBMin * ent.Scale - loddist; //streaming box
                        abmax = arch.BBMax * ent.Scale + loddist;
                        s[0] = abmin;
                        s[1] = new Vector3(abmin.X, abmin.Y, abmax.Z);
                        s[2] = new Vector3(abmin.X, abmax.Y, abmin.Z);
                        s[3] = new Vector3(abmin.X, abmax.Y, abmax.Z);
                        s[4] = new Vector3(abmax.X, abmin.Y, abmin.Z);
                        s[5] = new Vector3(abmax.X, abmin.Y, abmax.Z);
                        s[6] = new Vector3(abmax.X, abmax.Y, abmin.Z);
                        s[7] = abmax;

                        bbmin = new Vector3(float.MaxValue);
                        bbmax = new Vector3(float.MinValue);
                        sbmin = new Vector3(float.MaxValue);
                        sbmax = new Vector3(float.MinValue);
                        for (int j = 0; j < 8; j++)
                        {
                            Vector3 corn = ori.Multiply(c[j]) + ent.Position;
                            bbmin = Vector3.Min(bbmin, corn);
                            bbmax = Vector3.Max(bbmax, corn);

                            corn = ori.Multiply(s[j]) + ent.Position;
                            sbmin = Vector3.Min(sbmin, corn);
                            sbmax = Vector3.Max(sbmax, corn);
                        }
                    }

                    emin = Vector3.Min(emin, bbmin);
                    emax = Vector3.Max(emax, bbmax);

                    smin = Vector3.Min(smin, sbmin);
                    smax = Vector3.Max(smax, sbmax);
                }
            }

            if (GrassInstanceBatches != null)
            {
                //var lodoffset = Vector3.Zero;// new Vector3(0, 0, 100);  //IDK WHY -neos7  //dexy: i guess it's not completely necessary... //blame neos
                foreach (var batch in GrassInstanceBatches) //thanks to Neos7
                {
                    emin = Vector3.Min(emin, batch.AABBMin);
                    emax = Vector3.Max(emax, batch.AABBMax);

                    smin = Vector3.Min(smin, (batch.AABBMin - batch.Batch.lodDist)); // + lodoffset
                    smax = Vector3.Max(smax, (batch.AABBMax + batch.Batch.lodDist)); // - lodoffset
                }
            }


            bool change = false;
            if (_CMapData.entitiesExtentsMin != emin)
            {
                _CMapData.entitiesExtentsMin = emin;
                change = true;
            }
            if (_CMapData.entitiesExtentsMax != emax)
            {
                _CMapData.entitiesExtentsMax = emax;
                change = true;
            }
            if (_CMapData.streamingExtentsMin != smin)
            {
                _CMapData.streamingExtentsMin = smin;
                change = true;
            }
            if (_CMapData.streamingExtentsMax != smax)
            {
                _CMapData.streamingExtentsMax = smax;
                change = true;
            }
            return change;
        }


        private void UpdateGrassPhysDict(bool add)
        {
            var physDict = physicsDictionaries?.ToList() ?? new List<MetaHash>();
            var vproc1 = JenkHash.GenHash("v_proc1");
            var vproc2 = JenkHash.GenHash("v_proc2"); // I think you need vproc2 as well.
            var change = false;
            if (!physDict.Contains(vproc1))
            {
                change = true;
                if (add) physDict.Add(vproc1);
                else physDict.Remove(vproc1);
            }
            if (!physDict.Contains(vproc2))
            {
                change = true;
                if (add) physDict.Add(vproc2);
                else physDict.Remove(vproc2);
            }
            if (change) physicsDictionaries = physDict.ToArray();
        }

        public void InitYmapEntityArchetypes(GameFileCache gfc)
        {
            if (AllEntities != null)
            {
                for (int i = 0; i < AllEntities.Length; i++)
                {
                    var ent = AllEntities[i];
                    var arch = gfc.GetArchetype(ent._CEntityDef.archetypeName);
                    ent.SetArchetype(arch);
                    if (ent.IsMlo) ent.MloInstance.InitYmapEntityArchetypes(gfc);
                }
            }
            if (GrassInstanceBatches != null)
            {
                for (int i = 0; i < GrassInstanceBatches.Length; i++)
                {
                    var batch = GrassInstanceBatches[i];
                    batch.Archetype = gfc.GetArchetype(batch.Batch.archetypeName);
                }
            }

            if (TimeCycleModifiers != null)
            {
                for (int i = 0; i < TimeCycleModifiers.Length; i++)
                {
                    var tcm = TimeCycleModifiers[i];
                    World.TimecycleMod wtcm;
                    if (gfc.TimeCycleModsDict.TryGetValue(tcm.CTimeCycleModifier.name.Hash, out wtcm))
                    {
                        tcm.TimeCycleModData = wtcm;
                    }
                }
            }

        }

        private static uint SetBit(uint value, int bit)
        {
            return (value | (1u << bit));
        }

    }


    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapEntityDef
    {
        public Archetype Archetype { get; set; } //cached by GameFileCache on loading...
        public Vector3 BBMin;//oriented archetype AABBmin
        public Vector3 BBMax;//oriented archetype AABBmax
        public Vector3 BSCenter; //oriented archetype BS center
        public float BSRadius;//cached from archetype

        public CEntityDef _CEntityDef;
        public CEntityDef CEntityDef { get { return _CEntityDef; } set { _CEntityDef = value; } }
        private List<YmapEntityDef> ChildList { get; set; }
        public YmapEntityDef[] Children { get; set; }
        public YmapEntityDef[] ChildrenMerged;// { get; set; }
        public Vector3 Position { get; set; }
        public Quaternion Orientation { get; set; }
        public Vector3 Scale { get; set; }
        public bool IsMlo { get; set; }
        public MloInstanceData MloInstance { get; set; }
        public YmapEntityDef MloParent { get; set; }
        public MloInstanceEntitySet MloEntitySet { get; set; }
        public Vector3 MloRefPosition { get; set; }
        public Quaternion MloRefOrientation { get; set; }
        public MetaWrapper[] Extensions { get; set; }

        public int Index { get; set; }
        public float Distance { get; set; } //used for rendering
        public bool IsVisible; //used for rendering
        public bool ChildrenVisible; //used for rendering
        public bool ChildrenRendered; //used when rendering ymap mode to reduce LOD flashing...
        public YmapEntityDef Parent { get; set; } //for browsing convenience, also used/updated for rendering
        public MetaHash ParentName { get; set; } //just for browsing convenience

        public YmapFile Ymap { get; set; }

        public Vector3 PivotPosition = Vector3.Zero;
        public Quaternion PivotOrientation = Quaternion.Identity;
        public Vector3 WidgetPosition = Vector3.Zero;
        public Quaternion WidgetOrientation = Quaternion.Identity;

        public uint EntityHash { get; set; } = 0; //used by CW as a unique position+name identifier


        public string Name
        {
            get
            {
                return _CEntityDef.archetypeName.ToString();
            }
        }


        public YmapEntityDef()
        {
            Scale = Vector3.One;
            Position = Vector3.One;
            Orientation = Quaternion.Identity;
        }
        public YmapEntityDef(YmapFile ymap, int index, ref CEntityDef def)
        {
            Ymap = ymap;
            Index = index;
            CEntityDef = def;
            Scale = new Vector3(new Vector2(_CEntityDef.scaleXY), _CEntityDef.scaleZ);
            Position = _CEntityDef.position;
            Orientation = new Quaternion(_CEntityDef.rotation);
            if (Orientation != Quaternion.Identity)
            {
                Orientation = Quaternion.Invert(Orientation);
            }
            IsMlo = false;

            UpdateWidgetPosition();
            UpdateWidgetOrientation();
            UpdateEntityHash();
        }

        public YmapEntityDef(YmapFile ymap, int index, ref CMloInstanceDef mlo)
        {
            Ymap = ymap;
            Index = index;
            CEntityDef = mlo.CEntityDef;
            Scale = new Vector3(new Vector2(_CEntityDef.scaleXY), _CEntityDef.scaleZ);
            Position = _CEntityDef.position;
            Orientation = new Quaternion(_CEntityDef.rotation);
            //if (Orientation != Quaternion.Identity)
            //{
            //    Orientation = Quaternion.Invert(Orientation);
            //}
            IsMlo = true;

            MloInstance = new MloInstanceData();
            MloInstance.Instance = mlo;

            UpdateWidgetPosition();
            UpdateWidgetOrientation();
        }


        public void SetArchetype(Archetype arch)
        {
            Archetype = arch;
            if (Archetype != null)
            {
                float smax = Math.Max(Scale.X, Scale.Z);
                BSRadius = Archetype.BSRadius * smax;
                BSCenter = Orientation.Multiply(Archetype.BSCenter) * Scale;
                if (Orientation == Quaternion.Identity)
                {
                    BBMin = (Archetype.BBMin * Scale) + Position;
                    BBMax = (Archetype.BBMax * Scale) + Position;
                }
                else
                {
                    BBMin = Position - BSRadius;
                    BBMax = Position + BSRadius;
                    ////not ideal: should transform all 8 corners!
                }

                if (Archetype.Type == MetaName.CMloArchetypeDef)
                {
                    //transform interior entities into world space...
                    var mloa = Archetype as MloArchetype;
                    MloInstance = new MloInstanceData();
                    MloInstance._Instance = new CMloInstanceDef { CEntityDef = _CEntityDef };
                    if (mloa != null)
                    {
                        if (!IsMlo)
                        {
                            IsMlo = true;
                            List<YmapEntityDef> mloEntities = Ymap.MloEntities?.ToList() ?? new List<YmapEntityDef>();
                            mloEntities.Add(this);
                            Ymap.MloEntities = mloEntities.ToArray();
                        }

                        MloInstance.CreateYmapEntities(this, mloa);
                    }

                    if (BSRadius == 0.0f)
                    {
                        BSRadius = _CEntityDef.lodDist;//need something so it doesn't get culled...
                    }
                }
                else if (IsMlo) // archetype is no longer an mlo
                {
                    IsMlo = false;
                    MloInstance = null;

                    if (Ymap.MloEntities != null)
                    {
                        List<YmapEntityDef> mloEntities = Ymap.MloEntities.ToList();
                        if (mloEntities.Remove(this))
                        {
                            Ymap.MloEntities = mloEntities.ToArray();
                        }
                    }
                }
            }
        }

        public void SetPosition(Vector3 pos)
        {
            Position = pos;
            if (MloParent != null)
            {
                _CEntityDef.position = Quaternion.Normalize(Quaternion.Invert(MloParent.Orientation)).Multiply(pos - MloParent.Position);
                MloRefPosition = _CEntityDef.position;
                UpdateBB();
                UpdateMloArchetype();
            }
            else
            {
                _CEntityDef.position = pos;
                UpdateBB();
            }


            if (MloInstance != null)
            {
                MloInstance.SetPosition(Position);
                MloInstance.UpdateEntities();
            }

            UpdateEntityHash();
            UpdateWidgetPosition();
        }

        private void UpdateBB()
        {
            if (Archetype != null)
            {
                BSCenter = Orientation.Multiply(Archetype.BSCenter) * Scale;
            }
            if ((Archetype != null) && (Orientation == Quaternion.Identity))
            {
                BBMin = (Archetype.BBMin * Scale) + Position;
                BBMax = (Archetype.BBMax * Scale) + Position;
            }
            else
            {
                BBMin = Position - (BSRadius);
                BBMax = Position + (BSRadius);
                ////not ideal: should transform all 8 corners!
            }
        }

        public void UpdateEntityHash()
        {
            unchecked
            {
                var ints = new int[4];
                var pv = Position;
                ints[0] = (int)pv.X;
                ints[1] = (int)pv.Y;
                ints[2] = (int)pv.Z;
                ints[3] = (int)_CEntityDef.archetypeName.Hash;
                var bytes = new byte[16];
                for (int i = 0; i < 4; i++)
                {
                    var ib = i * 4;
                    var b = BitConverter.GetBytes(ints[i]);
                    bytes[ib + 0] = b[0];
                    bytes[ib + 1] = b[1];
                    bytes[ib + 2] = b[2];
                    bytes[ib + 3] = b[3];
                }
                EntityHash = JenkHash.GenHash(bytes);
            }
        }

        public void SetOrientation(Quaternion ori, bool inverse = false)
        {
            if (MloParent != null)
            {
                var mloInv = Quaternion.Normalize(Quaternion.Invert(MloParent.Orientation));
                Quaternion rel = Quaternion.Normalize(Quaternion.Multiply(mloInv, ori));
                Quaternion inv = Quaternion.Normalize(Quaternion.Invert(rel));
                Orientation = ori;
                _CEntityDef.rotation = inv.ToVector4();
            }
            else
            {
                Orientation = inverse ? Quaternion.Normalize(Quaternion.Invert(ori)) : ori;
                if (MloInstance != null)
                {
                    _CEntityDef.rotation = Orientation.ToVector4();
                }
                else
                {
                    Quaternion inv = inverse ? ori : Quaternion.Normalize(Quaternion.Invert(ori));
                    _CEntityDef.rotation = inv.ToVector4();
                }
            }

            if (MloInstance != null)
            {
                MloInstance.SetOrientation(ori);
                MloInstance.UpdateEntities();
            }

            if (Archetype != null)
            {
                BSCenter = Orientation.Multiply(Archetype.BSCenter) * Scale;
            }

            UpdateWidgetPosition();
            UpdateWidgetOrientation();
        }

        public void SetScale(Vector3 s)
        {
            Scale = new Vector3(s.X, s.X, s.Z);
            _CEntityDef.scaleXY = s.X;
            _CEntityDef.scaleZ = s.Z;

            MloInstanceData mloInstance = MloParent?.MloInstance;
            if (mloInstance != null)
            {
                var mcEntity = mloInstance.TryGetArchetypeEntity(this);
                if (mcEntity != null)
                {
                    mcEntity._Data.scaleXY = s.X;
                    mcEntity._Data.scaleZ = s.Z;
                }
            }
            if (Archetype != null)
            {
                float smax = Math.Max(Scale.X, Scale.Z);
                BSRadius = Archetype.BSRadius * smax;
            }

            SetPosition(Position);//update the BB
        }

        private void UpdateMloArchetype()
        {
            if (!(MloParent.Archetype is MloArchetype mloArchetype)) return;
            if (Index >= mloArchetype.entities.Length) return;

            MCEntityDef entity = mloArchetype.entities[Index];
            entity._Data.position = _CEntityDef.position;
            entity._Data.rotation = _CEntityDef.rotation;
        }


        public void SetPivotPosition(Vector3 pos)
        {
            PivotPosition = pos;

            UpdateWidgetPosition();
        }

        public void SetPivotOrientation(Quaternion ori)
        {
            PivotOrientation = ori;

            UpdateWidgetOrientation();
        }


        public void SetPositionFromWidget(Vector3 pos)
        {
            SetPosition(pos - Orientation.Multiply(PivotPosition));
        }
        public void SetOrientationFromWidget(Quaternion ori)
        {
            var newori = Quaternion.Normalize(Quaternion.Multiply(ori, Quaternion.Invert(PivotOrientation)));
            var newpos = WidgetPosition - newori.Multiply(PivotPosition);
            SetOrientation(newori);
            SetPosition(newpos);
        }
        public void SetPivotPositionFromWidget(Vector3 pos)
        {
            var orinv = Quaternion.Invert(Orientation);
            SetPivotPosition(orinv.Multiply(pos - Position));
        }
        public void SetPivotOrientationFromWidget(Quaternion ori)
        {
            var orinv = Quaternion.Invert(Orientation);
            SetPivotOrientation(Quaternion.Multiply(orinv, ori));
        }


        public void UpdateWidgetPosition()
        {
            WidgetPosition = Position + Orientation.Multiply(PivotPosition);
        }
        public void UpdateWidgetOrientation()
        {
            WidgetOrientation = Quaternion.Multiply(Orientation, PivotOrientation);
        }


        public void AddChild(YmapEntityDef c)
        {
            if (ChildList == null)
            {
                ChildList = new List<YmapEntityDef>();
            }
            c.Parent = this;
            c.ParentName = _CEntityDef.archetypeName;

            ChildList.Add(c);
        }

        public void ChildListToArray()
        {
            if (ChildList == null) return;
            //if (Children == null)
            //{
            Children = ChildList.ToArray();
            ChildrenMerged = Children;//include these by default in merged array
            //}
            //else
            //{
            //    List<YmapEntityDef> newc = new List<YmapEntityDef>(Children.Length + ChildList.Count);
            //    newc.AddRange(Children);
            //    newc.AddRange(ChildList);
            //    Children = newc.ToArray();
            //}
            ChildList.Clear();
            ChildList = null;
        }
        public void ChildListToMergedArray()
        {
            if (ChildList == null) return;
            if (ChildrenMerged == null)
            {
                ChildrenMerged = ChildList.ToArray();
            }
            else
            {
                List<YmapEntityDef> newc = new List<YmapEntityDef>(ChildrenMerged.Length + ChildList.Count);
                newc.AddRange(ChildrenMerged);
                newc.AddRange(ChildList);
                ChildrenMerged = newc.ToArray();
            }
            ChildList.Clear();
            ChildList = null;
        }

        public override string ToString()
        {
            return _CEntityDef.ToString() + ((ChildList != null) ? (" (" + ChildList.Count.ToString() + " children) ") : " ") + _CEntityDef.lodLevel.ToString();
        }

    }


    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapGrassInstanceBatch
    {
        private const float BatchVertMultiplier = 0.00001525878f;

        public Archetype Archetype { get; set; } //cached by GameFileCache on loading...
        public rage__fwGrassInstanceListDef Batch { get; set; }
        public rage__fwGrassInstanceListDef__InstanceData[] Instances { get; set; }
        public Vector3 Position { get; set; } //calculated from AABB
        public float Radius { get; set; } //calculated from AABB
        public Vector3 AABBMin { get; set; }
        public Vector3 AABBMax { get; set; }
        public Vector3 CamRel; //used for rendering...
        public float Distance; //used for rendering
        public YmapFile Ymap { get; set; }

        private List<BoundingBox> grassBounds; // for brush
        public bool BrushEnabled; // for brush
        public float BrushRadius = 5f; // for brush
        public bool HasChanged; // for brush and renderer

        // TODO: Make configurable.
        const float BoundingSize = 0.3F;
        static readonly Vector3 GrassMinMax = Vector3.One * BoundingSize;

        public override string ToString()
        {
            return Batch.ToString();
        }

        public void UpdateInstanceCount()
        {
            var b = Batch;
            var ins = b.InstanceList;
            ins.Count1 = (ushort)Instances.Length;
            b.InstanceList = ins;
            Batch = b;
        }

        public bool IsPointBlockedByInstance(Vector3 point)
        {
            return grassBounds.Any(bb => bb.Contains(point) == ContainmentType.Contains);
        }

        private void ReInitializeBoundingCache()
        {
            // cache is already initialized correctly.
            if (grassBounds != null && (grassBounds.Count == Instances.Length))
                return;

            // Clear the current bounding cache.
            if (grassBounds == null)
                grassBounds = new List<BoundingBox>();
            else grassBounds?.Clear();

            foreach (var inst in Instances)
            {
                // create bounding box for this instance.
                var worldPos = GetGrassWorldPos(inst.Position, new BoundingBox(AABBMin, AABBMax));
                var bb = new BoundingBox(worldPos - GrassMinMax, worldPos + GrassMinMax);
                grassBounds.Add(bb);
            }
        }

        public bool EraseInstancesAtMouse(
            YmapGrassInstanceBatch batch,
            SpaceRayIntersectResult mouseRay,
            float radius)
        {
            rage__spdAABB batchAABB = batch.Batch.BatchAABB;
            var oldInstanceBounds = new BoundingBox
            (
                batchAABB.min.XYZ(),
                batchAABB.max.XYZ()
            );
            var deleteSphere = new BoundingSphere(mouseRay.Position, radius);

            // check each instance to see if it's in the delete sphere
            // thankfully we've just avoided an O(n^2) op using this bounds stuff (doesn't mean it's super fast though,
            // but it's not super slow either, even at like 50,000 instances)
            var insList = new List<rage__fwGrassInstanceListDef__InstanceData>();
            foreach (var instance in batch.Instances)
            {
                // get the world pos
                var worldPos = GetGrassWorldPos(instance.Position, oldInstanceBounds);

                // create a boundary around the instance.
                var instanceBounds = new BoundingBox(worldPos - GrassMinMax, worldPos + GrassMinMax);

                // check if the sphere contains the boundary.
                var bb = new BoundingBox(instanceBounds.Minimum, instanceBounds.Maximum);
                var ct = deleteSphere.Contains(ref bb);
                if (ct == ContainmentType.Contains || ct == ContainmentType.Intersects)
                {
                    //delInstances.Add(instance); // Add a copy of this instance
                    continue;
                }
                insList.Add(instance);
            }
            if (insList.Count == Instances.Length)
                return false;

            var newBounds = GetNewGrassBounds(insList, oldInstanceBounds);
            // recalc instances
            var b = RecalcBatch(newBounds, batch);
            batch.Batch = b;
            insList = RecalculateInstances(insList, oldInstanceBounds, newBounds);
            batch.Instances = insList.ToArray();
            return true;
        }

        public void CreateInstancesAtMouse(
            YmapGrassInstanceBatch batch,
            SpaceRayIntersectResult mouseRay,
            float radius,
            int amount,
            Func<Vector3, SpaceRayIntersectResult> spawnRayFunc,
            Color color,
            int ao,
            int scale,
            Vector3 pad,
            bool randomScale)
        {

            ReInitializeBoundingCache();
            var spawnPosition = mouseRay.Position;
            var positions = new List<Vector3>();
            var normals = new List<Vector3>();

            // Get rand positions.
            GetSpawns(spawnPosition, spawnRayFunc, positions, normals, radius, amount);
            if (positions.Count <= 0) return;

            // get the instance list
            var instances =
                batch.Instances?.ToList() ?? new List<rage__fwGrassInstanceListDef__InstanceData>();
            var batchAABB = batch.Batch.BatchAABB;

            // make sure to store the old instance bounds for the original
            // grass instances
            var oldInstanceBounds = new BoundingBox(batchAABB.min.XYZ(), batchAABB.max.XYZ());

            if (positions.Count <= 0)
                return;

            // Begin the spawn bounds.
            var grassBound = new BoundingBox(positions[0] - GrassMinMax, positions[0] + GrassMinMax);
            grassBound = EncapsulatePositions(positions, grassBound);

            // Calculate the new spawn bounds.
            var newInstanceBounds = new BoundingBox(oldInstanceBounds.Minimum, oldInstanceBounds.Maximum);
            newInstanceBounds = instances.Count > 0
                ? newInstanceBounds.Encapsulate(grassBound)
                : new BoundingBox(grassBound.Minimum, grassBound.Maximum);

            // now we need to recalculate the position of each instance
            instances = RecalculateInstances(instances, oldInstanceBounds, newInstanceBounds);

            // Add new instances at each spawn position with
            // the parameters in the brush.
            SpawnInstances(positions, normals, instances, newInstanceBounds, color, ao, scale, pad, randomScale);

            // then recalc the bounds of the grass batch
            var b = RecalcBatch(newInstanceBounds, batch);

            // plug our values back in and refresh the ymap.
            batch.Batch = b;

            // Give back the new intsances
            batch.Instances = instances.ToArray();
            grassBounds.Clear();
        }

        // bhv approach recommended by dexy.
        public YmapGrassInstanceBatch[] OptimizeInstances(YmapGrassInstanceBatch batch, float minRadius)
        {
            // this function will return an array of grass instance batches
            // that are split up into sectors (groups) with a specific size.
            // say for instance we have 30,000 instances spread across a large
            // distance. We will split those instances into a grid-like group
            // and return the groups as an array of batches.
            var oldInstanceBounds = new BoundingBox(batch.Batch.BatchAABB.min.XYZ(), batch.Batch.BatchAABB.max.XYZ());

            if (oldInstanceBounds.Radius() < minRadius)
            {
                return new [] { batch };
            }

            // Get our optimized grassInstances
            var split = SplitGrassRecursive(batch.Instances.ToList(), oldInstanceBounds, minRadius);

            // Initiate a new batch list.
            var newBatches = new List<YmapGrassInstanceBatch>();

            foreach (var grassList in split)
            {
                // Create a new batch
                var newBatch = new YmapGrassInstanceBatch
                {
                    Archetype = batch.Archetype,
                    Ymap = batch.Ymap
                };

                // Get the boundary of the grassInstances
                var newInstanceBounds = GetNewGrassBounds(grassList, oldInstanceBounds);

                // Recalculate the batch boundaries.
                var b = RecalcBatch(newInstanceBounds, newBatch);
                newBatch.Batch = b;

                var ins = RecalculateInstances(grassList, oldInstanceBounds, newInstanceBounds);
                newBatch.Instances = ins.ToArray();
                newBatches.Add(newBatch);
            }

            return newBatches.ToArray();
        }

        private List<List<rage__fwGrassInstanceListDef__InstanceData>> SplitGrassRecursive(
            IReadOnlyList<rage__fwGrassInstanceListDef__InstanceData> grassInstances,
            BoundingBox batchAABB,
            float minRadius = 15F
        )
        {
            var ret = new List<List<rage__fwGrassInstanceListDef__InstanceData>>();
            var oldPoints = SplitGrass(grassInstances, batchAABB);
            while (true)
            {
                var stop = true;
                var newPoints = new List<List<rage__fwGrassInstanceListDef__InstanceData>>();
                foreach (var mb in oldPoints)
                {
                    // for some reason we got a null group?
                    if (mb == null)
                        continue;

                    // Get the bounds of the grassInstances list
                    var radius = GetNewGrassBounds(mb, batchAABB).Radius();

                    // check if the radius of the grassInstances
                    if (radius <= minRadius)
                    {
                        // this point list is within the minimum 
                        // radius.
                        ret.Add(mb);
                        continue; // we don't need to continue.
                    }

                    // since we're here let's keep going
                    stop = false;

                    // split the grassInstances again
                    var s = SplitGrass(mb, batchAABB);

                    // add it into the new grassInstances list.
                    newPoints.AddRange(s);
                }

                // set the old grassInstances to the new grassInstances.
                oldPoints = newPoints.ToArray();

                // if we're done, and all grassInstances are within the desired size
                // then end the loop.
                if (stop) break;
            }
            return ret;
        }

        private List<rage__fwGrassInstanceListDef__InstanceData>[] SplitGrass(
            IReadOnlyList<rage__fwGrassInstanceListDef__InstanceData> points,
            BoundingBox batchAABB)
        {
            var pointGroup = new List<rage__fwGrassInstanceListDef__InstanceData>[2];

            // Calculate the bounds of these grassInstances.
            var m = GetNewGrassBounds(points, batchAABB);

            // Get the center and size
            var mm = new Vector3
            {
                X = Math.Abs(m.Minimum.X - m.Maximum.X),
                Y = Math.Abs(m.Minimum.Y - m.Maximum.Y),
                Z = Math.Abs(m.Minimum.Z - m.Maximum.Z)
            };

            // x is the greatest axis...
            if (mm.X > mm.Y && mm.X > mm.Z)
            {
                // Calculate both boundaries.
                var lhs = new BoundingBox(m.Minimum, m.Maximum - new Vector3(mm.X * 0.5F, 0, 0));
                var rhs = new BoundingBox(m.Minimum + new Vector3(mm.X * 0.5F, 0, 0), m.Maximum);

                // Set the grassInstances accordingly.
                pointGroup[0] = points
                    .Where(p => lhs.Contains(GetGrassWorldPos(p.Position, batchAABB)) == ContainmentType.Contains).ToList();
                pointGroup[1] = points
                    .Where(p => rhs.Contains(GetGrassWorldPos(p.Position, batchAABB)) == ContainmentType.Contains).ToList();
            }
            // y is the greatest axis...
            else if (mm.Y > mm.X && mm.Y > mm.Z)
            {
                // Calculate both boundaries.
                var lhs = new BoundingBox(m.Minimum, m.Maximum - new Vector3(0, mm.Y * 0.5F, 0));
                var rhs = new BoundingBox(m.Minimum + new Vector3(0, mm.Y * 0.5F, 0), m.Maximum);

                // Set the grassInstances accordingly.
                pointGroup[0] = points
                    .Where(p => lhs.Contains(GetGrassWorldPos(p.Position, batchAABB)) == ContainmentType.Contains).ToList();
                pointGroup[1] = points
                    .Where(p => rhs.Contains(GetGrassWorldPos(p.Position, batchAABB)) == ContainmentType.Contains).ToList();
            }
            // z is the greatest axis...
            else if (mm.Z > mm.X && mm.Z > mm.Y)
            {
                // Calculate both boundaries.
                var lhs = new BoundingBox(m.Minimum, m.Maximum - new Vector3(0, 0, mm.Z * 0.5F));
                var rhs = new BoundingBox(m.Minimum + new Vector3(0, 0, mm.Z * 0.5F), m.Maximum);

                // Set the grassInstances accordingly.
                pointGroup[0] = points
                    .Where(p => lhs.Contains(GetGrassWorldPos(p.Position, batchAABB)) == ContainmentType.Contains).ToList();
                pointGroup[1] = points
                    .Where(p => rhs.Contains(GetGrassWorldPos(p.Position, batchAABB)) == ContainmentType.Contains).ToList();
            }
            return pointGroup;
        }

        private static BoundingBox GetNewGrassBounds(IReadOnlyList<rage__fwGrassInstanceListDef__InstanceData> newGrass, BoundingBox oldAABB)
        {
            var grassPositions = newGrass.Select(x => GetGrassWorldPos(x.Position, oldAABB)).ToArray();
            return BoundingBox.FromPoints(grassPositions).Expand(1f);
        }

        private void SpawnInstances(
            IReadOnlyList<Vector3> positions,
            IReadOnlyList<Vector3> normals,
            ICollection<rage__fwGrassInstanceListDef__InstanceData> instanceList,
            BoundingBox instanceBounds,
            Color color,
            int ao,
            int scale,
            Vector3 pad,
            bool randomScale)
        {
            for (var i = 0; i < positions.Count; i++)
            {
                var pos = positions[i];
                // create the new instance.
                var newInstance = CreateNewInstance(normals[i], color, ao, scale, pad, randomScale);

                // get the grass position of the new instance and add it to the 
                // instance list
                var grassPosition = GetGrassPos(pos, instanceBounds);
                newInstance.Position = grassPosition;
                instanceList.Add(newInstance);
            }
        }

        private rage__fwGrassInstanceListDef__InstanceData CreateNewInstance(Vector3 normal, Color color, int ao, int scale, Vector3 pad,
            bool randomScale = false)
        {
            //Vector3 pad = FloatUtil.ParseVector3String(PadTextBox.Text);
            //int scale = (int)ScaleNumericUpDown.Value;
            var rand = new Random();
            if (randomScale)
                scale = rand.Next(scale / 2, scale);
            var newInstance = new rage__fwGrassInstanceListDef__InstanceData
            {
                Ao = (byte)ao,
                Scale = (byte)scale,
                Color = new ArrayOfBytes3 { b0 = color.R, b1 = color.G, b2 = color.B },
                Pad = new ArrayOfBytes3 { b0 = (byte)pad.X, b1 = (byte)pad.Y, b2 = (byte)pad.Z },
                NormalX = (byte)((normal.X + 1) * 0.5F * 255F),
                NormalY = (byte)((normal.Y + 1) * 0.5F * 255F)
            };
            return newInstance;
        }

        private rage__fwGrassInstanceListDef RecalcBatch(BoundingBox newInstanceBounds, YmapGrassInstanceBatch batch)
        {
            batch.AABBMax = newInstanceBounds.Maximum;
            batch.AABBMin = newInstanceBounds.Minimum;
            batch.Position = newInstanceBounds.Center();
            batch.Radius = newInstanceBounds.Radius();
            var b = batch.Batch;
            b.BatchAABB = new rage__spdAABB
            {
                min =
                    new Vector4(newInstanceBounds.Minimum,
                        0), // Let's pass the new stuff into the batchabb as well just because.
                max = new Vector4(newInstanceBounds.Maximum, 0)
            };
            return b;
        }

        private void GetSpawns(
            Vector3 origin, Func<Vector3,
                SpaceRayIntersectResult> spawnRayFunc,
            ICollection<Vector3> positions,
            ICollection<Vector3> normals,
            float radius,
            int resolution = 28)
        {
            var rand = new Random();
            for (var i = 0; i < resolution; i++)
            {
                var randX = (float)rand.NextDouble(-radius, radius);
                var randY = (float)rand.NextDouble(-radius, radius);
                if (Math.Abs(randX) > 0 && Math.Abs(randY) > 0)
                {
                    randX *= .7071f;
                    randY *= .7071f;
                }
                var posOffset = origin + new Vector3(randX, randY, 2f);
                var spaceRay = spawnRayFunc.Invoke(posOffset);
                if (!spaceRay.Hit) continue;
                // not truly O(n^2) but may be slow...
                // actually just did some testing, not slow at all.
                if (IsPointBlockedByInstance(spaceRay.Position)) continue;
                normals.Add(spaceRay.Normal);
                positions.Add(spaceRay.Position);
            }
        }

        private static List<rage__fwGrassInstanceListDef__InstanceData> RecalculateInstances(
            List<rage__fwGrassInstanceListDef__InstanceData> instances,
            BoundingBox oldInstanceBounds,
            BoundingBox newInstanceBounds)
        {
            var refreshList = new List<rage__fwGrassInstanceListDef__InstanceData>();
            foreach (var inst in instances)
            {
                // Copy instance
                var copy =
                    new rage__fwGrassInstanceListDef__InstanceData
                    {
                        Position = inst.Position,
                        Ao = inst.Ao,
                        Color = inst.Color,
                        NormalX = inst.NormalX,
                        NormalY = inst.NormalY,
                        Pad = inst.Pad,
                        Scale = inst.Scale
                    };
                // get the position from where we would be in the old bounds, and move it to
                // the position it needs to be in the new bounds.
                var oldPos = GetGrassWorldPos(copy.Position, oldInstanceBounds);
                //var oldPos = oldInstanceBounds.min + oldInstanceBounds.Size * (grassPos * BatchVertMultiplier);
                copy.Position = GetGrassPos(oldPos, newInstanceBounds);
                refreshList.Add(copy);
            }
            instances = refreshList.ToList();
            return instances;
        }

        private static BoundingBox EncapsulatePositions(IEnumerable<Vector3> positions, BoundingBox bounds)
        {
            foreach (var pos in positions)
            {
                var posBounds = new BoundingBox(pos - (GrassMinMax + 0.1f), pos + (GrassMinMax + 0.1f));
                bounds = bounds.Encapsulate(posBounds);
            }
            return bounds;
        }

        private static ArrayOfUshorts3 GetGrassPos(Vector3 worldPos, BoundingBox batchAABB)
        {
            var offset = worldPos - batchAABB.Minimum;
            var size = batchAABB.Size();
            var percentage =
                new Vector3(
                    offset.X / size.X,
                    offset.Y / size.Y,
                    offset.Z / size.Z
                );
            var instancePos = percentage / BatchVertMultiplier;
            return new ArrayOfUshorts3
            {
                u0 = (ushort)instancePos.X,
                u1 = (ushort)instancePos.Y,
                u2 = (ushort)instancePos.Z
            };
        }

        private static Vector3 GetGrassWorldPos(ArrayOfUshorts3 grassPos, BoundingBox batchAABB)
        {
            return batchAABB.Minimum + batchAABB.Size() * (grassPos.XYZ() * BatchVertMultiplier);
        }
    }

    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapPropInstanceBatch
    {
        public YmapFile Ymap { get; set; }

    }

    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapDistantLODLights
    {
        public CDistantLODLight CDistantLODLight { get; set; }
        public uint[] colours { get; set; }
        public MetaVECTOR3[] positions { get; set; }

        public Vector3 BBMin { get; set; }
        public Vector3 BBMax { get; set; }
        public YmapFile Ymap { get; set; }

        public void CalcBB()
        {
            if (positions != null)
            {
                Vector3 min = new Vector3(float.MaxValue);
                Vector3 max = new Vector3(float.MinValue);
                for (int i = 0; i < positions.Length; i++)
                {
                    var p = positions[i];
                    Vector3 pv = p.ToVector3();
                    min = Vector3.Min(min, pv);
                    max = Vector3.Max(max, pv);
                }
                BBMin = min;
                BBMax = max;
            }

        }
    }

    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapLODLights
    {
        public CLODLight CLODLight { get; set; }
        public MetaVECTOR3[] direction { get; set; }
        public float[] falloff { get; set; }
        public float[] falloffExponent { get; set; }
        public uint[] timeAndStateFlags { get; set; }
        public uint[] hash { get; set; }
        public byte[] coneInnerAngle { get; set; }
        public byte[] coneOuterAngleOrCapExt { get; set; }
        public byte[] coronaIntensity { get; set; }

        public Vector3 BBMin { get; set; }
        public Vector3 BBMax { get; set; }
        public YmapFile Ymap { get; set; }

        public void CalcBB()
        {
            //if (positions != null)
            //{
            //    Vector3 min = new Vector3(float.MaxValue);
            //    Vector3 max = new Vector3(float.MinValue);
            //    for (int i = 0; i < positions.Length; i++)
            //    {
            //        var p = positions[i];
            //        Vector3 pv = p.ToVector3();
            //        min = Vector3.Min(min, pv);
            //        max = Vector3.Max(max, pv);
            //    }
            //    BBMin = min;
            //    BBMax = max;
            //}

        }
    }


    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapTimeCycleModifier
    {
        public CTimeCycleModifier CTimeCycleModifier { get; set; }
        public World.TimecycleMod TimeCycleModData { get; set; }

        public Vector3 BBMin { get; set; }
        public Vector3 BBMax { get; set; }

        public YmapFile Ymap { get; set; }
    }


    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapCarGen
    {
        public CCarGen _CCarGen;
        public CCarGen CCarGen { get { return _CCarGen; } set { _CCarGen = value; } }

        public Vector3 Position { get; set; }
        public Quaternion Orientation { get; set; }
        public Vector3 BBMin { get; set; }
        public Vector3 BBMax { get; set; }

        public YmapFile Ymap { get; set; }


        public YmapCarGen(YmapFile ymap, CCarGen cargen)
        {
            float hlen = cargen.perpendicularLength * 0.5f;
            Ymap = ymap;
            CCarGen = cargen;
            Position = cargen.position;
            CalcOrientation();
            BBMin = new Vector3(-hlen);
            BBMax = new Vector3(hlen);
        }


        public void CalcOrientation()
        {
            float angl = (float)Math.Atan2(_CCarGen.orientY, _CCarGen.orientX);
            Orientation = Quaternion.RotationYawPitchRoll(0.0f, 0.0f, angl);
        }

        public void SetPosition(Vector3 pos)
        {
            Position = pos;
            _CCarGen.position = pos;
        }
        public void SetOrientation(Quaternion ori)
        {
            Orientation = ori;

            float len = Math.Max(_CCarGen.perpendicularLength * 1.5f, 5.0f);
            Vector3 v = new Vector3(len, 0, 0);
            Vector3 t = ori.Multiply(v);

            _CCarGen.orientX = t.X;
            _CCarGen.orientY = t.Y;
        }
        public void SetScale(Vector3 scale)
        {
            float s = scale.X;
            float hlen = s * 0.5f;
            _CCarGen.perpendicularLength = s;

            BBMin = new Vector3(-hlen);
            BBMax = new Vector3(hlen);
        }

        public void SetLength(float length)
        {
            _CCarGen.perpendicularLength = length;
            float hlen = length * 0.5f;

            BBMin = new Vector3(-hlen);
            BBMax = new Vector3(hlen);
        }

        public string NameString()
        {
            MetaHash mh = _CCarGen.carModel;
            if ((mh == 0) && (_CCarGen.popGroup != 0))
            {
                mh = _CCarGen.popGroup;
            }
            return mh.ToString();
        }

        public override string ToString()
        {
            return _CCarGen.carModel.ToString() + ", " + Position.ToString() + ", " + _CCarGen.popGroup.ToString() + ", " + _CCarGen.livery.ToString();
        }
    }


    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapOccludeModel : BasePathData
    {
        public OccludeModel _OccludeModel;
        public OccludeModel OccludeModel { get { return _OccludeModel; } set { _OccludeModel = value; } }

        public YmapFile Ymap { get; set; }

        public byte[] Data { get; set; }
        public Vector3[] Vertices { get; set; }
        public byte[] Indices { get; set; }
        public int Index { get; set; }

        public YmapOccludeModel(YmapFile ymap, OccludeModel model)
        {
            Ymap = ymap;
            _OccludeModel = model;
        }


        public void Load(Meta meta)
        {
            var vptr = _OccludeModel.verts;
            var dataSize = _OccludeModel.dataSize;
            var indicesOffset = _OccludeModel.numVertsInBytes;
            var vertexCount = indicesOffset / 12;
            var indexCount = (int)(dataSize - indicesOffset);// / 4;
            Data = MetaTypes.GetByteArray(meta, vptr, dataSize);
            Vertices = MetaTypes.ConvertDataArray<Vector3>(Data, 0, vertexCount);
            Indices = new byte[indexCount];
            Buffer.BlockCopy(Data, indicesOffset, Indices, 0, indexCount);
        }


        public EditorVertex[] GetTriangleVertices()
        {
            if ((Vertices == null) || (Indices == null)) return null;
            EditorVertex[] res = new EditorVertex[Indices.Length];//changing from indexed to nonindexed triangle list
            var colour = new Color4(1.0f, 1.0f, 1.0f, 0.2f); //todo: colours for occlude models? currently transparent white
            var colourval = (uint)colour.ToRgba();
            for (int i = 0; i < Indices.Length; i++)
            {
                res[i].Position = Vertices[Indices[i]];
                res[i].Colour = colourval;
            }
            return res;
        }

        public EditorVertex[] GetPathVertices()
        {
            return null;
        }
        public Vector4[] GetNodePositions()
        {
            return null;
        }
    }

    [TypeConverter(typeof(ExpandableObjectConverter))]
    public class YmapBoxOccluder
    {
        public BoxOccluder _Box;
        public BoxOccluder Box { get { return _Box; } set { _Box = value; } }

        public YmapFile Ymap { get; set; }


        public Vector3 Position { get; set; }
        public Vector3 Size { get; set; }
        public Vector3 BBMin { get; set; }
        public Vector3 BBMax { get; set; }
        public Quaternion Orientation { get; set; }
        public int Index { get; set; }


        public YmapBoxOccluder(YmapFile ymap, BoxOccluder box)
        {
            Ymap = ymap;
            _Box = box;

            Position = new Vector3(box.iCenterX, box.iCenterY, box.iCenterZ) / 4.0f;
            Size = new Vector3(box.iLength, box.iWidth, box.iHeight) / 4.0f;
            BBMin = Size * -0.5f;
            BBMax = Size * 0.5f;

            float cosz = box.iCosZ / 32767.0f;// ((float)short.MaxValue)
            float sinz = box.iSinZ / 32767.0f;

            float angl = (float)Math.Atan2(cosz, sinz);
            Orientation = Quaternion.RotationYawPitchRoll(0.0f, 0.0f, angl);

        }

    }

}