638 lines
23 KiB
C#
638 lines
23 KiB
C#
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using UniRx;
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using Unity.Mathematics;
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using static Unity.Mathematics.math;
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using float2 = Unity.Mathematics.float2;
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using Random = Unity.Mathematics.Random;
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public class Zone
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{
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public const string OrbitKeyPrefix = "aetheria.orbit:legacy:";
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public const string BodyKeyPrefix = "aetheria.body:legacy:";
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public Action<string> Log;
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public ReactiveCollection<Entity> Entities = new ReactiveCollection<Entity>();
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public Dictionary<Guid, Planet> PlanetInstances = new Dictionary<Guid, Planet>();
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public Dictionary<Guid, Orbit> Orbits = new Dictionary<Guid, Orbit>();
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public Dictionary<Guid, AsteroidBelt> AsteroidBelts = new Dictionary<Guid, AsteroidBelt>();
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public PlanetSettings Settings;
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private HashSet<Guid> _updatedOrbits = new HashSet<Guid>();
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private ItemManager _itemManager;
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private double _time;
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private Random _random;
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public List<Agent> Agents = new List<Agent>();
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private List<Task> BeltUpdates = new List<Task>();
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public float Time
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{
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get => (float) _time;
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}
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public float Radius { get; }
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public float Mass { get; }
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public GalaxyZone GalaxyZone { get; }
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public Galaxy Galaxy { get; }
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public Zone(ItemManager itemManager, PlanetSettings settings, ZoneConstructionBlueprint blueprint, GalaxyZone galaxyZone, Galaxy galaxy)
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{
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_time = blueprint.Time;
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GalaxyZone = galaxyZone;
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Galaxy = galaxy;
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Radius = blueprint.Radius;
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Mass = blueprint.Mass;
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_itemManager = itemManager;
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Settings = settings;
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_random = new Random(Convert.ToUInt32(abs(galaxyZone?.Name.GetHashCode() ?? 1337)));
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foreach (var orbit in blueprint.Orbits)
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{
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Orbits.Add(orbit.ID, new Orbit(Settings, orbit));
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}
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foreach (var planet in blueprint.Bodies)
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{
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switch (planet)
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{
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case AsteroidBeltConstructionData belt:
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AsteroidBelts[belt.ID] = new AsteroidBelt(belt);
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break;
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case SunConstructionData sun:
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PlanetInstances.Add(sun.ID, new Sun(settings, sun, Orbits[planet.Orbit]));
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break;
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case GasGiantConstructionData gas:
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PlanetInstances.Add(gas.ID, new GasGiant(settings, gas, Orbits[planet.Orbit]));
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break;
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default:
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PlanetInstances.Add(planet.ID, new Planet(settings, planet, Orbits[planet.Orbit]));
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break;
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}
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}
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foreach (var entityBlueprint in blueprint.Entities)
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{
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var entity = EntityConstructionBlueprintProjector.InstantiateFromBlueprint(_itemManager, this, entityBlueprint);
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Entities.Add(entity);
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entity.Activate();
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if (entity is Ship {IsPlayerShip: false} ship)
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{
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Agents.Add(CreateAgent(ship));
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if (lengthsq(ship.Position) < 1)
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ship.Position = _itemManager.Random.NextFloat3(float3(-blueprint.Radius * .5f), float3(blueprint.Radius * .5f));
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}
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}
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// TODO: Associate planets with stored entities for planetary colonies
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}
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private Agent CreateAgent(Ship ship)
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{
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var agent = new Minion(ship);
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var task = new PatrolOrbitsTask();
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task.Circuit = Orbits.Values
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.OrderBy(_ => _itemManager.Random.NextFloat())
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.Take(4)
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.Select(orbit => orbit.OrbitKey)
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.ToArray();
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agent.Task = task;
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return agent;
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}
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public static string OrbitKey(Guid id)
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{
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return id == Guid.Empty ? "" : $"{OrbitKeyPrefix}{id:D}";
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}
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public static string BodyKey(Guid id)
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{
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return id == Guid.Empty ? "" : $"{BodyKeyPrefix}{id:D}";
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}
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public static Guid ParseOrbitGuid(string orbitKey)
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{
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if (string.IsNullOrWhiteSpace(orbitKey))
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return Guid.Empty;
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var runtimeOrbitId = orbitKey.StartsWith(OrbitKeyPrefix, StringComparison.OrdinalIgnoreCase)
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? orbitKey.Substring(OrbitKeyPrefix.Length)
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: orbitKey;
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return Guid.TryParse(runtimeOrbitId, out var id) ? id : Guid.Empty;
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}
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public string GetBodyKey(Guid bodyId)
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{
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if (bodyId == Guid.Empty)
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return "";
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if (PlanetInstances.TryGetValue(bodyId, out var planet))
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return planet.BodyKey;
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if (AsteroidBelts.TryGetValue(bodyId, out var belt))
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return belt.BodyKey;
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return BodyKey(bodyId);
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}
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public static Guid ParseBodyGuid(string bodyKey)
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{
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if (string.IsNullOrWhiteSpace(bodyKey))
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return Guid.Empty;
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var runtimeBodyId = bodyKey.StartsWith(BodyKeyPrefix, StringComparison.OrdinalIgnoreCase)
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? bodyKey.Substring(BodyKeyPrefix.Length)
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: bodyKey;
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return Guid.TryParse(runtimeBodyId, out var id) ? id : Guid.Empty;
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}
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public bool TryGetPlanet(string bodyKey, out Planet planet)
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{
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return PlanetInstances.TryGetValue(ParseBodyGuid(bodyKey), out planet);
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}
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public bool TryGetAsteroidBelt(string bodyKey, out AsteroidBelt belt)
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{
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return AsteroidBelts.TryGetValue(ParseBodyGuid(bodyKey), out belt);
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}
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public bool TryGetOrbit(string orbitKey, out Orbit orbit)
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{
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return Orbits.TryGetValue(ParseOrbitGuid(orbitKey), out orbit);
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}
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public void Update(float deltaTime)
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{
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_time += deltaTime;
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_updatedOrbits.Clear();
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foreach (var t in BeltUpdates)
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t.Wait();
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BeltUpdates.Clear();
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foreach (var orbit in Orbits)
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{
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orbit.Value.PreviousPosition = orbit.Value.Position;
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orbit.Value.Position = GetOrbitPosition(orbit.Key);
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orbit.Value.Velocity = (orbit.Value.Position - orbit.Value.PreviousPosition) / deltaTime;
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}
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foreach (var belt in AsteroidBelts)
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{
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Array.Copy(belt.Value.NewTransforms, belt.Value.Transforms, belt.Value.Transforms.Length);
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belt.Value.OrbitPosition = belt.Value.NewOrbitPosition;
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BeltUpdates.Add(Task.Run(() => UpdateAsteroidTransforms(belt.Key)));
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}
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foreach(var agent in Agents)
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agent.Update(deltaTime);
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foreach (var entity in Entities.ToArray()) entity.Update(deltaTime);
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}
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// Determine orbital position recursively, caching parent positions to avoid repeated calculations
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public float2 GetOrbitPosition(Guid orbitID)
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{
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// Root orbit is fixed at origin
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if(orbitID==Guid.Empty)
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return float2.zero;
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if (!Orbits.ContainsKey(orbitID))
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{
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Log?.Invoke("Requested orbit is not part of this zone!");
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return float2.zero;
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}
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if (!_updatedOrbits.Contains(orbitID))
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{
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var orbit = Orbits[orbitID];
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float2 pos = float2.zero;
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if (orbit.Period > .01f)
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{
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var phase = (float) frac(_time / orbit.Period);
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pos = Orbit.Evaluate(frac(phase + orbit.Phase)) * orbit.Distance;
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if (float.IsNaN(pos.x))
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{
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//_context.Log("Orbit position is NaN, something went very wrong!");
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pos = float2.zero;
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}
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}
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var parentPosition = orbit.Parent == Guid.Empty
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? orbit.FixedPosition
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: GetOrbitPosition(orbit.Parent);
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Orbits[orbitID].Position = parentPosition + pos;
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_updatedOrbits.Add(orbitID);
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}
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return Orbits[orbitID].Position;
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}
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public float2 GetOrbitPosition(string orbitKey)
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{
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return GetOrbitPosition(ParseOrbitGuid(orbitKey));
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}
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public float2 GetOrbitVelocity(Guid orbit)
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{
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if (Orbits.ContainsKey(orbit))
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return Orbits[orbit].Velocity;
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return float2.zero;
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}
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public int NearestAsteroid(Guid planetDataID, float2 position)
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{
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var belt = AsteroidBelts[planetDataID];
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var asteroidPositions = belt.Transforms;
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int nearest = 0;
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float nearestDistance = Single.MaxValue;
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for (int i = 0; i < belt.AsteroidCount; i++)
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{
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var dist = lengthsq(asteroidPositions[i].xz - position);
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if (AsteroidExists(planetDataID, i) && dist < nearestDistance)
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{
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nearest = i;
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nearestDistance = dist;
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}
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}
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return nearest;
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}
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public bool AsteroidExists(Guid planetDataID, int asteroid) => AsteroidBelts[planetDataID].ContainsAsteroid(asteroid);
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public bool AsteroidExists(string asteroidBeltKey, int asteroid)
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{
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return TryGetAsteroidBelt(asteroidBeltKey, out var belt) && belt.ContainsAsteroid(asteroid);
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}
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private void UpdateAsteroidTransforms(Guid planetDataID)
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{
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var belt = AsteroidBelts[planetDataID];
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var orbit = Orbits[belt.Orbit];
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belt.NewOrbitPosition = GetOrbitPosition(orbit.Parent);
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for (var i = 0; i < belt.AsteroidCount; i++)
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{
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var asteroid = belt.GetAsteroid(i);
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float size;
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if(belt.RespawnTimers.ContainsKey(i)) size = 0;
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else if (belt.Damage.ContainsKey(i))
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{
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var asteroidHitpoints = Settings.AsteroidHitpoints.Evaluate(asteroid.Size);
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var damage = (asteroidHitpoints - belt.Damage[i]) / asteroidHitpoints;
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size = Settings.AsteroidSize.Evaluate(damage * asteroid.Size);
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}
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else size = Settings.AsteroidSize.Evaluate(asteroid.Size);
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var rot = (float) (_time * asteroid.RotationSpeed % (PI * 2));
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var pos = Orbit.Evaluate((float) frac(_time / Settings.OrbitPeriod.Evaluate(asteroid.Distance) +
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asteroid.Phase)) * asteroid.Distance + belt.NewOrbitPosition;
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//belt.NewPositions[i] = float3(pos.x, GetHeight(pos) + Settings.AsteroidVerticalOffset, pos.y);
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belt.NewTransforms[i] = float4(pos.x, pos.y, rot, size);
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}
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}
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public void MineAsteroid(Entity miner, Guid asteroidBelt, int asteroid, float damage, float efficiency, float penetration)
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{
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var belt = AsteroidBelts[asteroidBelt];
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//var asteroidTransform = belt.Transforms[asteroid];
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var size = belt.GetAsteroid(asteroid).Size;
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var asteroidHitpoints = Settings.AsteroidHitpoints.Evaluate(size);
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if (!belt.Damage.ContainsKey(asteroid))
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belt.Damage[asteroid] = 0;
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belt.Damage[asteroid] = belt.Damage[asteroid] + damage;
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if (!belt.MiningAccumulator.ContainsKey((miner, asteroid)))
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belt.MiningAccumulator[(miner, asteroid)] = 0;
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belt.MiningAccumulator[(miner, asteroid)] = belt.MiningAccumulator[(miner, asteroid)] + damage;
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if (belt.Damage[asteroid] > asteroidHitpoints)
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{
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belt.RespawnTimers[asteroid] = Settings.AsteroidRespawnTime.Evaluate(size);
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belt.Damage.Remove(asteroid);
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belt.MiningAccumulator.Remove((miner, asteroid));
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return;
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}
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var resourceCount = belt.Resources.Sum(x => x.Value);
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var resource = belt.Resources.MaxBy(x => pow(x.Value, 1f / penetration) * _random.NextFloat());
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if (efficiency * _random.NextFloat() * belt.MiningAccumulator[(miner, asteroid)] * resourceCount / Settings.MiningDifficulty > 1)
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{
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belt.MiningAccumulator.Remove((miner, asteroid));
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// var newSimpleCommodity = new SimpleCommodity
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// {
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// Data = resource.Key,
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// Quantity = 1
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// };
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// TODO: Drop item onto the Grid
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//miner.AddCargo(newSimpleCommodity);
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}
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}
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public void MineAsteroid(Entity miner, string asteroidBeltKey, int asteroid, float damage, float efficiency, float penetration)
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{
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if (TryGetAsteroidBelt(asteroidBeltKey, out var belt))
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MineAsteroid(miner, belt.ID, asteroid, damage, efficiency, penetration);
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}
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public SecurityLevel GetSecurityLevel(float2 pos)
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{
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if (GalaxyZone.Owner==null) return SecurityLevel.Open;
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var security = SecurityLevel.Open;
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foreach (var entity in Entities)
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{
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if (entity is OrbitalEntity orbitalEntity && orbitalEntity.SecurityRadius > 1 && entity.Faction.HasSameKey(GalaxyZone.Owner))
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{
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if (orbitalEntity.SecurityLevel > security && length(orbitalEntity.Position.xz - pos) < orbitalEntity.SecurityRadius * Settings.SecureAreaRadiusMultiplier)
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security = orbitalEntity.SecurityLevel;
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}
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}
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return security;
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}
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public float GetHeight(float2 position)
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{
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var result = -PowerPulse(length(position)/(Radius*2), Settings.ZoneDepthExponent) * Settings.ZoneDepth;
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foreach (var body in PlanetInstances.Values)
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{
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var p = position - body.Orbit.Position;
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var distSqr = lengthsq(p);
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var gravityRadius = body.GravityWellRadius;
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if (distSqr < gravityRadius*gravityRadius)
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{
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var depth = body.GravityWellDepth;
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result -= PowerPulse(sqrt(distSqr) / gravityRadius, body.GravityDepthExponent) * depth;
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}
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if (body is GasGiant gas)
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{
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var waveRadius = gas.GravityWavesRadius;
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if(distSqr < waveRadius*waveRadius)
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{
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var depth = gas.GravityWavesDepth;
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var frequency = Settings.WaveFrequency.Evaluate(body.Mass);
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var speed = gas.GravityWavesSpeed;
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result -= RadialWaves(sqrt(distSqr) / waveRadius, 8, 1.25f, frequency, (float) (_time * speed)) * depth;
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}
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}
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}
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return result;
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}
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public float GetLight(float2 position)
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{
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var light = 0f;
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foreach (var body in PlanetInstances.Values)
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{
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if (body is Sun sun)
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{
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var p = position - body.Orbit.Position;
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var distSqr = lengthsq(p);
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var lightRadius = sun.LightRadius;
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if (distSqr < lightRadius * lightRadius)
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{
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light += PowerPulse(sqrt(distSqr) / lightRadius, 8);
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}
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}
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}
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return light;
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}
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public float2 GetForce(float2 position)
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{
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var normal = GetNormal(position);
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var f = new float2(normal.x, normal.z);
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return f * Settings.GravityStrength * lengthsq(f);
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}
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public static float PowerPulse(float x, float exponent)
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{
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x *= 2;
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x = clamp(x, -1, 1);
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return pow((x + 1) * (1 - x), exponent);
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}
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public static float RadialWaves(float x, float maskExponent, float sineExponent, float frequency, float phase)
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{
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//x *= 2;
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return PowerPulse(x, maskExponent) * cos(pow(x*2, sineExponent) * frequency + phase);
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}
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public float3 GetNormal(float2 pos, float step = .1f, float mul = 1)
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{
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float hL = GetHeight(new float2(pos.x - step, pos.y)) * mul;
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float hR = GetHeight(new float2(pos.x + step, pos.y)) * mul;
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float hD = GetHeight(new float2(pos.x, pos.y - step)) * mul;
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float hU = GetHeight(new float2(pos.x, pos.y + step)) * mul;
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// Deduce terrain normal
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float3 normal = new float3((hL - hR), (hD - hU), step*2);
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return normalize(normal).xzy;
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}
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}
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public class Planet
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{
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public Orbit Orbit;
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protected readonly PlanetSettings Settings;
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public Guid ID { get; }
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public string BodyKey { get; }
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public string Name { get; }
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public Guid OrbitId { get; }
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public string OrbitKey { get; }
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public float Mass { get; }
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public IReadOnlyDictionary<string, float> Resources { get; }
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public float BodyRadiusMultiplier { get; }
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public float GravityRadiusMultiplier { get; }
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public float GravityDepthMultiplier { get; }
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public float GravityDepthExponent { get; }
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public float GravityWellDepth;
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public float GravityWellRadius;
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public float BodyRadius;
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public Planet(PlanetSettings settings, BodyConstructionData data, Orbit orbit)
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{
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Settings = settings;
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Orbit = orbit;
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ID = data.ID;
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BodyKey = Zone.BodyKey(data.ID);
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Name = data.Name ?? "";
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OrbitId = data.Orbit;
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OrbitKey = Zone.OrbitKey(data.Orbit);
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Mass = data.Mass;
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Resources = data.Resources;
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BodyRadiusMultiplier = data.BodyRadiusMultiplier;
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GravityRadiusMultiplier = data.GravityRadiusMultiplier;
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GravityDepthMultiplier = data.GravityDepthMultiplier;
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GravityDepthExponent = data.GravityDepthExponent;
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CalculateProperties();
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}
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public void CalculateProperties()
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{
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BodyRadius = Settings.BodyRadius.Evaluate(Mass) * BodyRadiusMultiplier;
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GravityWellRadius = Settings.GravityRadius.Evaluate(Mass) * GravityRadiusMultiplier;
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GravityWellDepth = Settings.GravityDepth.Evaluate(Mass) * GravityDepthMultiplier;
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}
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}
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public class GasGiant : Planet
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{
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public float FirstOffsetDomainRotationSpeed { get; }
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public float FirstOffsetRotationSpeed { get; }
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public float SecondOffsetDomainRotationSpeed { get; }
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public float SecondOffsetRotationSpeed { get; }
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public float AlbedoRotationSpeed { get; }
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public float WaveRadiusMultiplier { get; }
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public float WaveDepthMultiplier { get; }
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public float WaveDepthExponent { get; }
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public float WaveSpeedMultiplier { get; }
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public IReadOnlyList<string> MaterialOverrides { get; }
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public float4[] Colors { get; }
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public float GravityWavesDepth;
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public float GravityWavesRadius;
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public float GravityWavesSpeed;
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public GasGiant(PlanetSettings settings, GasGiantConstructionData data, Orbit orbit) : base(settings, data, orbit)
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{
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FirstOffsetDomainRotationSpeed = data.FirstOffsetDomainRotationSpeed;
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FirstOffsetRotationSpeed = data.FirstOffsetRotationSpeed;
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SecondOffsetDomainRotationSpeed = data.SecondOffsetDomainRotationSpeed;
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SecondOffsetRotationSpeed = data.SecondOffsetRotationSpeed;
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AlbedoRotationSpeed = data.AlbedoRotationSpeed;
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WaveRadiusMultiplier = data.WaveRadiusMultiplier;
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WaveDepthMultiplier = data.WaveDepthMultiplier;
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WaveDepthExponent = data.WaveDepthExponent;
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WaveSpeedMultiplier = data.WaveSpeedMultiplier;
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MaterialOverrides = data.MaterialOverrides;
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Colors = data.Colors;
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CalculateProperties();
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}
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public new void CalculateProperties()
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{
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base.CalculateProperties();
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GravityWavesDepth = Settings.WaveDepth.Evaluate(Mass) * WaveDepthMultiplier;
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GravityWavesRadius = Settings.WaveRadius.Evaluate(Mass) * WaveRadiusMultiplier;
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GravityWavesSpeed = Settings.WaveSpeed.Evaluate(Mass) * WaveSpeedMultiplier;
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}
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}
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public class Sun : GasGiant
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{
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public float3 LightColor { get; }
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public float3 FogTintColor { get; }
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public float LightRadiusMultiplier { get; }
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public float LightRadius;
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public Sun(PlanetSettings settings, SunConstructionData data, Orbit orbit) : base(settings, data, orbit)
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{
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LightColor = data.LightColor;
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FogTintColor = data.FogTintColor;
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LightRadiusMultiplier = data.LightRadiusMultiplier;
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CalculateProperties();
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}
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public new void CalculateProperties()
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{
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base.CalculateProperties();
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LightRadius = Settings.LightRadius.Evaluate(Mass) * LightRadiusMultiplier;
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}
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}
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public class AsteroidBelt
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{
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private readonly Asteroid[] _asteroids;
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public Guid ID { get; }
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public string BodyKey { get; }
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public string Name { get; }
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public Guid Orbit { get; }
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public string OrbitKey { get; }
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public float Mass { get; }
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public IReadOnlyDictionary<string, float> Resources { get; }
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public float BodyRadiusMultiplier { get; }
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public float GravityRadiusMultiplier { get; }
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public float GravityDepthMultiplier { get; }
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public float GravityDepthExponent { get; }
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public float4[] Transforms; // x, y, rotation, scale
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public float4[] NewTransforms; // x, y, rotation, scale
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public float Radius { get; }
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public float2 OrbitPosition;
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public float2 NewOrbitPosition;
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public Dictionary<int, float> RespawnTimers = new Dictionary<int, float>();
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public Dictionary<int, float> Damage = new Dictionary<int, float>();
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public Dictionary<(Entity, int), float> MiningAccumulator = new Dictionary<(Entity, int), float>();
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public AsteroidBelt(AsteroidBeltConstructionData data)
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{
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_asteroids = data.Asteroids;
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ID = data.ID;
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BodyKey = Zone.BodyKey(data.ID);
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Name = data.Name ?? "";
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Orbit = data.Orbit;
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OrbitKey = Zone.OrbitKey(data.Orbit);
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Mass = data.Mass;
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Resources = data.Resources;
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BodyRadiusMultiplier = data.BodyRadiusMultiplier;
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GravityRadiusMultiplier = data.GravityRadiusMultiplier;
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GravityDepthMultiplier = data.GravityDepthMultiplier;
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GravityDepthExponent = data.GravityDepthExponent;
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Transforms = new float4[_asteroids.Length];
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NewTransforms = new float4[_asteroids.Length];
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Radius = _asteroids.Max(a => a.Distance);
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}
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public int AsteroidCount => _asteroids.Length;
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public bool ContainsAsteroid(int asteroid) => asteroid >= 0 && asteroid < _asteroids.Length;
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public Asteroid GetAsteroid(int asteroid) => _asteroids[asteroid];
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}
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public class Orbit
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{
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public Guid ID { get; }
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public string OrbitKey { get; }
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public Guid Parent { get; }
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public string ParentOrbitKey { get; }
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public float Distance { get; }
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public float Phase { get; }
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public float2 FixedPosition { get; }
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public float2 Velocity = float2.zero;
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public float2 Position = float2.zero;
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public float2 PreviousPosition = float2.zero;
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public float Period;
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public static float2 Evaluate(float phase)
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{
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phase *= PI * 2;
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return new float2(cos(phase), sin(phase));
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}
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public Orbit(PlanetSettings settings, OrbitConstructionData data)
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{
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ID = data.ID;
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OrbitKey = Zone.OrbitKey(data.ID);
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Parent = data.Parent;
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ParentOrbitKey = Zone.OrbitKey(data.Parent);
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Distance = data.Distance;
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Phase = data.Phase;
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FixedPosition = data.FixedPosition;
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Period = settings.OrbitPeriod.Evaluate(data.Distance);
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}
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}
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