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muffin v7.5.13

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alydev 2026-08-22 10:25:22 +10:00
parent 911ed68baa
commit acf3e3cb18
69 changed files with 2731 additions and 1425 deletions
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122
SmartNav.Model/SmartNav.Model.Navigation/WaterCacheFormat.cs Normal file
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using System;
using System.Buffers.Binary;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Text;
namespace SmartNav.Model.Navigation;
public static class WaterCacheFormat
{
public const uint FileMagic = 1129469015u;
public const int FileFormatVersion = 1;
public const string FileName = "water-cache.bin";
private const int MaxTerritoryCount = 65536;
private const int ClassBytes = 65536;
private const int SurfaceBytes = 131072;
private const int PayloadBytes = 196608;
public static void Write(Stream stream, string gameVersion, IReadOnlyList<TerritoryWaterMap> maps)
{
ArgumentNullException.ThrowIfNull(stream, "stream");
ArgumentNullException.ThrowIfNull(gameVersion, "gameVersion");
ArgumentNullException.ThrowIfNull(maps, "maps");
List<TerritoryWaterMap> list = new List<TerritoryWaterMap>(maps.Count);
foreach (TerritoryWaterMap map in maps)
{
if (map.HasWater)
{
list.Add(map);
}
}
list.Sort((TerritoryWaterMap left, TerritoryWaterMap right) => left.TerritoryId.CompareTo(right.TerritoryId));
using BinaryWriter binaryWriter = new BinaryWriter(stream, Encoding.UTF8, leaveOpen: true);
binaryWriter.Write(1129469015u);
binaryWriter.Write(1);
binaryWriter.Write(gameVersion);
binaryWriter.Write(list.Count);
foreach (TerritoryWaterMap item in list)
{
byte[] array = new byte[196608];
item.Classes.CopyTo(array.AsSpan(0, 65536));
ReadOnlySpan<ushort> surfaceYRaw = item.SurfaceYRaw;
for (int num = 0; num < surfaceYRaw.Length; num++)
{
BinaryPrimitives.WriteUInt16LittleEndian(array.AsSpan(65536 + num * 2), surfaceYRaw[num]);
}
using MemoryStream memoryStream = new MemoryStream();
using (DeflateStream deflateStream = new DeflateStream(memoryStream, CompressionLevel.Optimal, leaveOpen: true))
{
deflateStream.Write(array);
}
binaryWriter.Write(item.TerritoryId);
binaryWriter.Write((int)memoryStream.Length);
binaryWriter.Write(memoryStream.GetBuffer(), 0, (int)memoryStream.Length);
}
}
public static (string GameVersion, List<TerritoryWaterMap> Maps) Read(Stream stream)
{
ArgumentNullException.ThrowIfNull(stream, "stream");
using BinaryReader binaryReader = new BinaryReader(stream, Encoding.UTF8, leaveOpen: true);
uint num = binaryReader.ReadUInt32();
if (num != 1129469015)
{
throw new InvalidDataException($"water cache has magic 0x{num:X8}, expected 0x{1129469015:X8}");
}
int num2 = binaryReader.ReadInt32();
if (num2 != 1)
{
throw new InvalidDataException($"water cache has format version {num2}, expected {1}");
}
string item = binaryReader.ReadString();
int num3 = binaryReader.ReadInt32();
if (num3 < 0 || num3 > 65536)
{
throw new InvalidDataException($"water cache declares {num3} territories");
}
List<TerritoryWaterMap> list = new List<TerritoryWaterMap>(num3);
for (int i = 0; i < num3; i++)
{
ushort num4 = binaryReader.ReadUInt16();
int num5 = binaryReader.ReadInt32();
if (num5 < 0)
{
throw new InvalidDataException($"territory {num4} declares {num5} compressed bytes");
}
byte[] array = binaryReader.ReadBytes(num5);
if (array.Length != num5)
{
throw new InvalidDataException($"territory {num4} is truncated: {array.Length} of {num5} bytes");
}
byte[] array2 = new byte[196608];
using (DeflateStream deflateStream = new DeflateStream(new MemoryStream(array, writable: false), CompressionMode.Decompress))
{
deflateStream.ReadExactly(array2);
}
byte[] subArray = array2[..65536];
byte[] array3 = subArray;
foreach (byte b in array3)
{
if (b > 2)
{
throw new InvalidDataException($"territory {num4} has cell class {b}, expected 0..{2}");
}
}
ushort[] array4 = new ushort[65536];
for (int k = 0; k < array4.Length; k++)
{
array4[k] = BinaryPrimitives.ReadUInt16LittleEndian(array2.AsSpan(65536 + k * 2));
}
list.Add(new TerritoryWaterMap(num4, subArray, array4));
}
return (GameVersion: item, Maps: list);
}
}