366 lines
12 KiB
C#
366 lines
12 KiB
C#
using Content.Server.Decals;
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using Content.Shared.Decals;
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using Content.Shared.Parallax.Biomes;
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using Robust.Server.Player;
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using Robust.Shared;
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using Robust.Shared.Configuration;
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using Robust.Shared.Map;
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using Robust.Shared.Map.Components;
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using Robust.Shared.Noise;
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using Robust.Shared.Player;
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using Robust.Shared.Random;
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namespace Content.Server.Parallax;
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public sealed class BiomeSystem : SharedBiomeSystem
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{
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[Dependency] private readonly IConfigurationManager _configManager = default!;
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[Dependency] private readonly IPlayerManager _playerManager = default!;
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[Dependency] private readonly IRobustRandom _random = default!;
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[Dependency] private readonly DecalSystem _decals = default!;
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[Dependency] private readonly SharedTransformSystem _transform = default!;
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private readonly HashSet<EntityUid> _handledEntities = new();
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private const float DefaultLoadRange = 16f;
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private float _loadRange = DefaultLoadRange;
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private Box2 _loadArea = new(-DefaultLoadRange, -DefaultLoadRange, DefaultLoadRange, DefaultLoadRange);
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/// <summary>
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/// Stores the chunks active for this tick temporarily.
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/// </summary>
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private readonly Dictionary<BiomeComponent, HashSet<Vector2i>> _activeChunks = new();
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public override void Initialize()
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{
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base.Initialize();
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SubscribeLocalEvent<BiomeComponent, ComponentStartup>(OnBiomeStartup);
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SubscribeLocalEvent<BiomeComponent, MapInitEvent>(OnBiomeMapInit);
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_configManager.OnValueChanged(CVars.NetMaxUpdateRange, SetLoadRange, true);
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}
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public override void Shutdown()
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{
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base.Shutdown();
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_configManager.UnsubValueChanged(CVars.NetMaxUpdateRange, SetLoadRange);
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}
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private void SetLoadRange(float obj)
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{
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// Round it up
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_loadRange = MathF.Ceiling(obj / ChunkSize) * ChunkSize;
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_loadArea = new Box2(-_loadRange, -_loadRange, _loadRange, _loadRange);
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}
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private void OnBiomeStartup(EntityUid uid, BiomeComponent component, ComponentStartup args)
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{
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component.Noise.SetSeed(component.Seed);
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}
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private void OnBiomeMapInit(EntityUid uid, BiomeComponent component, MapInitEvent args)
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{
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SetSeed(component, _random.Next());
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}
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public void SetPrototype(BiomeComponent component, string proto)
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{
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if (component.BiomePrototype == proto)
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return;
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component.BiomePrototype = proto;
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Dirty(component);
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}
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public void SetSeed(BiomeComponent component, int seed)
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{
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component.Seed = seed;
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component.Noise.SetSeed(seed);
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Dirty(component);
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}
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public override void Update(float frameTime)
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{
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base.Update(frameTime);
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var biomeQuery = GetEntityQuery<BiomeComponent>();
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var xformQuery = GetEntityQuery<TransformComponent>();
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var biomes = AllEntityQuery<BiomeComponent>();
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while (biomes.MoveNext(out var biome))
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{
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_activeChunks.Add(biome, new HashSet<Vector2i>());
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}
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// Get chunks in range
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foreach (var client in Filter.GetAllPlayers(_playerManager))
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{
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var pSession = (IPlayerSession) client;
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if (xformQuery.TryGetComponent(pSession.AttachedEntity, out var xform) &&
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_handledEntities.Add(pSession.AttachedEntity.Value) &&
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biomeQuery.TryGetComponent(xform.MapUid, out var biome))
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{
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AddChunksInRange(biome, _transform.GetWorldPosition(xform, xformQuery));
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}
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foreach (var viewer in pSession.ViewSubscriptions)
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{
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if (!_handledEntities.Add(viewer) ||
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!xformQuery.TryGetComponent(viewer, out xform) ||
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!biomeQuery.TryGetComponent(xform.MapUid, out biome))
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{
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continue;
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}
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AddChunksInRange(biome, _transform.GetWorldPosition(xform, xformQuery));
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}
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}
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var loadBiomes = AllEntityQuery<BiomeComponent, MapGridComponent>();
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while (loadBiomes.MoveNext(out var biome, out var grid))
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{
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var noise = biome.Noise;
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var gridUid = grid.Owner;
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// Load new chunks
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LoadChunks(biome, gridUid, grid, noise, xformQuery);
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// Unload old chunks
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UnloadChunks(biome, gridUid, grid, noise);
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}
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_handledEntities.Clear();
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_activeChunks.Clear();
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}
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private void AddChunksInRange(BiomeComponent biome, Vector2 worldPos)
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{
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var enumerator = new ChunkIndicesEnumerator(_loadArea.Translated(worldPos), ChunkSize);
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while (enumerator.MoveNext(out var chunkOrigin))
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{
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_activeChunks[biome].Add(chunkOrigin.Value * ChunkSize);
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}
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}
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private void LoadChunks(
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BiomeComponent component,
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EntityUid gridUid,
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MapGridComponent grid,
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FastNoiseLite noise,
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EntityQuery<TransformComponent> xformQuery)
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{
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var active = _activeChunks[component];
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var prototype = ProtoManager.Index<BiomePrototype>(component.BiomePrototype);
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List<(Vector2i, Tile)>? tiles = null;
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foreach (var chunk in active)
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{
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if (!component.LoadedChunks.Add(chunk))
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continue;
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tiles ??= new List<(Vector2i, Tile)>(ChunkSize * ChunkSize);
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// Load NOW!
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LoadChunk(component, gridUid, grid, chunk, noise, prototype, tiles, xformQuery);
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}
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}
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private void LoadChunk(
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BiomeComponent component,
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EntityUid gridUid,
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MapGridComponent grid,
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Vector2i chunk,
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FastNoiseLite noise,
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BiomePrototype prototype,
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List<(Vector2i, Tile)> tiles,
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EntityQuery<TransformComponent> xformQuery)
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{
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component.ModifiedTiles.TryGetValue(chunk, out var modified);
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modified ??= new HashSet<Vector2i>();
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// Set tiles first
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for (var x = 0; x < ChunkSize; x++)
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{
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for (var y = 0; y < ChunkSize; y++)
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{
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var indices = new Vector2i(x + chunk.X, y + chunk.Y);
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if (modified.Contains(indices))
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continue;
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// If there's existing data then don't overwrite it.
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if (grid.TryGetTileRef(indices, out var tileRef) && !tileRef.Tile.IsEmpty)
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continue;
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// Pass in null so we don't try to get the tileref.
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if (!TryGetBiomeTile(indices, prototype, noise, null, out var biomeTile) || biomeTile.Value == tileRef.Tile)
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continue;
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tiles.Add((indices, biomeTile.Value));
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}
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}
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grid.SetTiles(tiles);
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tiles.Clear();
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// Now do entities
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var loadedEntities = new List<EntityUid>();
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component.LoadedEntities.Add(chunk, loadedEntities);
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for (var x = 0; x < ChunkSize; x++)
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{
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for (var y = 0; y < ChunkSize; y++)
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{
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var indices = new Vector2i(x + chunk.X, y + chunk.Y);
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if (modified.Contains(indices))
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continue;
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// Don't mess with anything that's potentially anchored.
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var anchored = grid.GetAnchoredEntitiesEnumerator(indices);
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if (anchored.MoveNext(out _) || !TryGetEntity(indices, prototype, noise, grid, out var entPrototype))
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continue;
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// TODO: Fix non-anchored ents spawning.
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// Just track loaded chunks for now.
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var ent = Spawn(entPrototype, grid.GridTileToLocal(indices));
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// At least for now unless we do lookups or smth, only work with anchoring.
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if (xformQuery.TryGetComponent(ent, out var xform) && !xform.Anchored)
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{
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_transform.AnchorEntity(ent, xform, grid, indices);
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}
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loadedEntities.Add(ent);
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}
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}
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// Decals
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var loadedDecals = new Dictionary<uint, Vector2i>();
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component.LoadedDecals.Add(chunk, loadedDecals);
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for (var x = 0; x < ChunkSize; x++)
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{
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for (var y = 0; y < ChunkSize; y++)
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{
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var indices = new Vector2i(x + chunk.X, y + chunk.Y);
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if (modified.Contains(indices))
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continue;
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// Don't mess with anything that's potentially anchored.
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var anchored = grid.GetAnchoredEntitiesEnumerator(indices);
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if (anchored.MoveNext(out _) || !TryGetDecals(indices, prototype, noise, grid, out var decals))
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continue;
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foreach (var decal in decals)
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{
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if (!_decals.TryAddDecal(decal.ID, new EntityCoordinates(gridUid, decal.Position), out var dec))
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continue;
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loadedDecals.Add(dec, indices);
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}
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}
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}
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if (modified.Count == 0)
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{
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component.ModifiedTiles.Remove(chunk);
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}
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else
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{
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component.ModifiedTiles[chunk] = modified;
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}
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}
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private void UnloadChunks(BiomeComponent component, EntityUid gridUid, MapGridComponent grid, FastNoiseLite noise)
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{
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var active = _activeChunks[component];
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List<(Vector2i, Tile)>? tiles = null;
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foreach (var chunk in component.LoadedChunks)
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{
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if (active.Contains(chunk) || !component.LoadedChunks.Remove(chunk))
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continue;
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// Unload NOW!
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tiles ??= new List<(Vector2i, Tile)>(ChunkSize * ChunkSize);
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UnloadChunk(component, gridUid, grid, chunk, noise, tiles);
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}
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}
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private void UnloadChunk(BiomeComponent component, EntityUid gridUid, MapGridComponent grid, Vector2i chunk, FastNoiseLite noise, List<(Vector2i, Tile)> tiles)
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{
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// Reverse order to loading
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var prototype = ProtoManager.Index<BiomePrototype>(component.BiomePrototype);
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component.ModifiedTiles.TryGetValue(chunk, out var modified);
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modified ??= new HashSet<Vector2i>();
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// Delete decals
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foreach (var (dec, indices) in component.LoadedDecals[chunk])
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{
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// If we couldn't remove it then flag the tile to never be touched.
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if (!_decals.RemoveDecal(gridUid, dec))
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{
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modified.Add(indices);
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}
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}
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component.LoadedDecals.Remove(chunk);
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// Delete entities
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// This is a TODO
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// Ideally any entities that aren't modified just get deleted and re-generated later
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// This is because if we want to save the map (e.g. persistent server) it makes the file much smaller
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// and also if the map is enormous will make stuff like physics broadphase much faster
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// For now we'll just leave them because no entity diffs.
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component.LoadedEntities.Remove(chunk);
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// Unset tiles (if the data is custom)
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for (var x = 0; x < ChunkSize; x++)
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{
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for (var y = 0; y < ChunkSize; y++)
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{
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var indices = new Vector2i(x + chunk.X, y + chunk.Y);
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if (modified.Contains(indices))
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continue;
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// Don't mess with anything that's potentially anchored.
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var anchored = grid.GetAnchoredEntitiesEnumerator(indices);
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if (anchored.MoveNext(out _))
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{
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modified.Add(indices);
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continue;
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}
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// If it's default data unload the tile.
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if (!TryGetBiomeTile(indices, prototype, noise, null, out var biomeTile) ||
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grid.TryGetTileRef(indices, out var tileRef) && tileRef.Tile != biomeTile.Value)
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{
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modified.Add(indices);
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continue;
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}
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tiles.Add((indices, Tile.Empty));
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}
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}
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grid.SetTiles(tiles);
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tiles.Clear();
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component.LoadedChunks.Remove(chunk);
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if (modified.Count == 0)
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{
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component.ModifiedTiles.Remove(chunk);
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}
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else
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{
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component.ModifiedTiles[chunk] = modified;
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}
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}
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}
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