void ProcessWorldEvent(ZombieAgent zombie, WorldEvent ev)
{
if (ev == null)
{
return;
}
var dist = Vector3.Distance(zombie.pos, ev.Pos);
if (dist <= ev.Radius)
{
Vector3 soundDir = new Vector3();
soundDir.x = _prng.Get(-1.0f, 1.0f);
soundDir.z = _prng.Get(-1.0f, 1.0f);
// Pick a random position within 75% of the radius.
soundDir.Normalize();
soundDir *= (dist * 0.75f);
zombie.targetPos = ev.Pos + soundDir;
zombie.target = _worldZones.FindByPos2D(zombie.targetPos);
zombie.state = ZombieAgent.State.Investigating;
}
}
void UpdateApproachTarget(ZombieAgent zombie, float dt)
{
#if false
// Test investigation.
if (zombie.state != ZombieAgent.State.Investigating)
{
return;
}
#endif
float speed = _state.ScaledZombieSpeed;
speed *= dt;
// Calculate direction towards target position.
zombie.dir = zombie.targetPos - zombie.pos;
zombie.dir.Normalize();
var distance = Vector3.Distance(zombie.pos, zombie.targetPos) * 0.75f;
var t = (zombie.simulationTime + zombie.id) * 0.2f;
var offset = new Vector3(Mathf.Cos(t), 0.0f, Mathf.Sin(t));
offset *= distance;
// Move towards target.
zombie.pos = Vector3.MoveTowards(zombie.pos, zombie.targetPos + offset, speed);
}
private void UpdateTarget(ZombieAgent zombie)
{
if (zombie.state != ZombieAgent.State.Idle)
{
// If we have an active target wait for arrival.
if (!zombie.ReachedTarget())
{
return;
}
zombie.AddVisitedZone(zombie.target);
}
if (_state.IsBloodMoon)
{
zombie.target = _playerZones.GetRandomClosest(zombie.pos, _prng, 200.0f, null);
if (zombie.target == null)
{
zombie.target = GetNextTarget(zombie);
}
}
else
{
zombie.target = GetNextTarget(zombie);
}
zombie.targetPos = GetTargetPos(zombie.target);
zombie.state = ZombieAgent.State.Wandering;
}
private Zone GetNextTarget(ZombieAgent zombie)
{
if (_prng.Chance(Config.Instance.POITravellerChance))
{
return(GetNextPOI(zombie));
}
return(_worldZones.GetRandom(_prng));
}
void UpdateInactiveZombie(ZombieAgent zombie, float dt, WorldEvent ev)
{
zombie.simulationTime += dt;
ProcessWorldEvent(zombie, ev);
UpdateTarget(zombie);
UpdateApproachTarget(zombie, dt);
}
void TurnZombieInactive(ZombieAgent zombie)
{
zombie.state = ZombieAgent.State.Idle;
lock (_inactiveQueue)
{
_inactiveQueue.Enqueue(zombie);
}
}
private POIZone GetNextPOI(ZombieAgent zombie)
{
var closest = _pois.GetRandomClosest(zombie.pos, _prng, 5000, 3);
if (closest == null)
{
return(_pois.GetRandom(_prng));
}
return(closest);
}
private void RespawnInactiveZombie(ZombieAgent zombie)
{
lock (_inactiveQueue)
{
zombie.pos = GetRandomBorderPoint();
zombie.target = GetNextTarget(zombie);
zombie.targetPos = GetTargetPos(zombie.target);
_inactiveQueue.Enqueue(zombie);
}
}
private void UpdateInactiveZombie(ZombieAgent zombie, float dt, WorldEvent ev)
{
UpdateTarget(zombie, ev);
zombie.dir = zombie.targetPos - zombie.pos;
zombie.dir.Normalize();
float speed = _worldState.GetZombieSpeed() * dt;
zombie.pos = Vector3.MoveTowards(zombie.pos, zombie.targetPos, speed);
}
private void RequestActiveZombie(ZombieAgent zombie, PlayerZone zone)
{
ZombieSpawnRequest spawn = new ZombieSpawnRequest();
spawn.zombie = zombie;
spawn.zone = zone;
lock (_spawnQueue)
{
_spawnQueue.Enqueue(spawn);
}
}
void RequestActiveZombie(ZombieAgent zombie, PlayerZone zone)
{
zombie.state = ZombieAgent.State.Active;
ZombieSpawnRequest spawn = new ZombieSpawnRequest();
spawn.zombie = zombie;
spawn.zone = zone;
lock (_spawnQueue)
{
_spawnQueue.Enqueue(spawn);
}
}
private ZombieAgent CreateInactiveZombie(bool initial)
{
ZombieAgent zombie = new ZombieAgent();
zombie.id = _nextZombieId++;
if (initial)
{
// The initial population is placed nearby pois more frequently.
var poiChance = 0.8f;
var poi = _prng.Chance(poiChance) ? _pois.GetRandom(_prng) : null;
if (poi != null)
{
// To be not literally inside the POI we add a random radius.
var spawnRadius = 256.0f;
var randOffset = new Vector3(
_prng.Get(-spawnRadius, spawnRadius),
0.0f,
_prng.Get(-spawnRadius, spawnRadius));
zombie.pos = poi.GetRandomPos(_prng) + randOffset;
zombie.pos = WrapPos(zombie.pos);
}
else
{
// Use a random world zone for the rest.
var zone = _worldZones.GetRandom(_prng);
if (zone != null)
{
zombie.pos = zone.GetRandomPos(_prng);
}
else
{
zombie.pos = GetRandomPos();
}
}
}
else
{
// New zombies start at the border.
zombie.pos = GetRandomBorderPoint();
}
zombie.target = GetNextTarget(zombie);
zombie.targetPos = GetTargetPos(zombie.target);
_inactiveZombies.Add(zombie);
return(zombie);
}
ZombieAgent CreateInactiveZombie(bool initial)
{
ZombieAgent zombie = new ZombieAgent();
zombie.id = _nextZombieId++;
if (initial)
{
var poiChance = Config.Instance.POITravellerChance;
var poi = _prng.Chance(poiChance) ? _pois.GetRandom(_prng) : null;
if (poi != null)
{
// To be not literally inside the POI we add a random radius.
var spawnRadius = 256.0f;
var randOffset = new Vector3(
_prng.Get(-spawnRadius, spawnRadius),
0.0f,
_prng.Get(-spawnRadius, spawnRadius));
zombie.pos = poi.GetRandomPos(_prng) + randOffset;
zombie.pos = WrapPos(zombie.pos);
}
else
{
// Use a random world zone for the rest.
var zone = _worldZones.GetRandom(_prng);
if (zone != null)
{
zombie.pos = zone.GetRandomPos(_prng);
}
else
{
zombie.pos = GetRandomPos();
}
}
}
else
{
// New zombies start at the border.
zombie.pos = GetRandomBorderPoint();
}
zombie.state = ZombieAgent.State.Idle;
_inactiveZombies.Add(zombie);
return(zombie);
}
public bool Load()
{
try
{
using (Stream stream = File.Open(SimulationFile, FileMode.Open))
{
BinaryFormatter formatter = new BinaryFormatter();
Config config = formatter.Deserialize(stream) as Config;
if (!config.Equals(_config))
{
Log.Out("[WalkerSim] Configuration changed, not loading save.");
return(false);
}
lock (_lock)
{
List <ZombieData> data = formatter.Deserialize(stream) as List <ZombieData>;
if (data.Count > 0)
{
_inactiveZombies.Clear();
foreach (var zombie in data)
{
var inactiveZombie = new ZombieAgent
{
health = zombie.health,
pos = new Vector3(zombie.x, zombie.y, zombie.z),
dir = new Vector3(zombie.dirX, 0.0f, zombie.dirY),
target = zombie.target ? _pois.GetRandom(_prng) : null,
targetPos = new Vector3(zombie.targetX, zombie.targetY, zombie.targetZ),
};
_inactiveZombies.Add(inactiveZombie);
}
Log.Out("[WalkerSim] Loaded {0} inactive zombies", _inactiveZombies.Count);
}
}
}
}
catch (Exception)
{
return(false);
}
return(true);
}
private void UpdateTarget(ZombieAgent zombie, WorldEvent ev)
{
if (ev != null)
{
var dist = Vector3.Distance(zombie.pos, ev.Pos);
if (dist <= ev.Radius)
{
Vector3 soundDir = new Vector3();
soundDir.x = _prng.Get(-1.0f, 1.0f);
soundDir.z = _prng.Get(-1.0f, 1.0f);
soundDir.Normalize();
soundDir *= (dist * 0.75f);
zombie.targetPos = ev.Pos + soundDir;
#if DEBUG
Log.Out("Reacting to sound at {0}", ev.Pos);
#endif
return;
}
}
// If we have an activate target wait for arrival.
if (!zombie.ReachedTarget())
{
return;
}
if (_worldState.IsBloodMoon())
{
zombie.target = _playerZones.GetRandomClosest(zombie.pos, _prng, 200.0f);
if (zombie.target == null)
{
zombie.target = GetNextTarget(zombie);
}
}
else
{
zombie.target = GetNextTarget(zombie);
}
zombie.targetPos = GetTargetPos(zombie.target);
}
public bool Load()
{
try
{
using (Stream stream = File.Open(SimulationFile, FileMode.Open))
{
BinaryFormatter formatter = new();
var config = (Config)formatter.Deserialize(stream);
if (!config.Equals(Config.Instance))
{
Logger.Info("Configuration changed, not loading save.");
return(false);
}
lock (_inactiveZombies)
{
var data = (List <ZombieData>)formatter.Deserialize(stream);
if (data.Count > 0)
{
_inactiveZombies.Clear();
foreach (var zombie in data)
{
var inactiveZombie = new ZombieAgent
{
pos = new Vector3(zombie.x, zombie.y, zombie.z),
health = zombie.health,
};
inactiveZombie.Inactive.target = zombie.target ? _pois.GetRandom(_prng) : null;
inactiveZombie.Inactive.targetPos = new Vector3(zombie.targetX, zombie.targetY, zombie.targetZ);
_inactiveZombies.Add(inactiveZombie);
}
Logger.Info("Loaded {0} inactive zombies", _inactiveZombies.Count);
}
}
}
}
catch (Exception)
{
return(false);
}
return(true);
}
void RespawnInactiveZombie(ZombieAgent zombie)
{
zombie.pos = GetRandomBorderPoint();
TurnZombieInactive(zombie);
}
void UpdateInactiveZombies(float dt)
{
// Repopulate
lock (_inactiveZombies)
{
lock (_inactiveQueue)
{
while (_inactiveQueue.Count > 0)
{
var zombie = _inactiveQueue.Dequeue();
_inactiveZombies.Add(zombie);
}
}
}
// Simulate
int activatedZombies = 0;
int maxUpdates = _maxZombies;
int maxPerZone = MaxZombiesPerZone();
WorldEvent ev = null;
lock (_worldEvents)
{
if (_worldEvents.Count > 0)
{
ev = _worldEvents.Dequeue();
}
}
for (int i = 0; ; i++)
{
lock (_inactiveZombies)
{
if (i >= _inactiveZombies.Count)
{
break;
}
var world = GameManager.Instance.World;
if (world == null)
{
Log.Out("[WalkerSim] World no longer exists, bailing");
break;
}
bool removeZombie = false;
bool activatedZombie = false;
ZombieAgent zombie = _inactiveZombies[i];
UpdateInactiveZombie(zombie, dt, ev);
//Log.Out("New Zombie Position: {0}, Target: {1}", zombie.pos, zombie.targetPos);
if (!CanSpawnActiveZombie())
{
continue;
}
List <PlayerZone> zones = _playerZones.FindAllByPos2D(zombie.pos);
if (zones.Count <= 0)
{
continue;
}
foreach (var zone in zones)
{
var player = world.GetEntity(zone.entityId) as EntityPlayer;
// Use players spawn border.
if (zone.IsInside2D(zombie.pos))
{
if (!zone.InsideSpawnArea2D(zombie.pos))
{
removeZombie = true;
continue;
}
}
else
{
continue;
}
if (zone.numZombies >= maxPerZone)
{
#if DEBUG
Log.Out("[WalkerSim] Zone {0} is full: {1} / {2}", zombie.pos, zone.numZombies, maxPerZone);
#endif
continue;
}
RequestActiveZombie(zombie, zone);
activatedZombie = true;
activatedZombies++;
break;
}
// Zombie inside one or more zones will be always removed.
if (activatedZombie)
{
removeZombie = true;
}
if (removeZombie)
{
_inactiveZombies.RemoveAt(i);
i--;
// If the zombie was not activated begin a new cycle.
if (!activatedZombie)
{
RespawnInactiveZombie(zombie);
}
// NOTE: This should never happen.
if (_inactiveZombies.Count == 0)
{
Log.Error("Population is empty, this should not happen.");
break;
}
}
}
}
#if DEBUG
if (activatedZombies > 0)
{
Log.Out("[WalkerSim] Activated {0} zombies", activatedZombies);
}
#endif
}
bool CreateZombie(ZombieAgent zombie, PlayerZone zone)
{
if (!CanSpawnActiveZombie())
{
return(false);
}
var world = GameManager.Instance.World;
Chunk chunk = (Chunk)world.GetChunkSync(World.toChunkXZ(Mathf.FloorToInt(zombie.pos.x)), 0, World.toChunkXZ(Mathf.FloorToInt(zombie.pos.z)));
if (chunk == null)
{
#if DEBUG
Log.Out("[WalkerSim] Chunk not loaded at {0} {1}", zombie.pos, zombie.pos.z);
#endif
return(false);
}
int height = world.GetTerrainHeight(Mathf.FloorToInt(zombie.pos.x), Mathf.FloorToInt(zombie.pos.z));
Vector3 spawnPos = new Vector3(zombie.pos.x, height + 1.0f, zombie.pos.z);
if (!CanZombieSpawnAt(spawnPos))
{
#if DEBUG
Log.Out("[WalkerSim] Unable to spawn zombie at {0}, CanMobsSpawnAtPos failed", spawnPos);
#endif
return(false);
}
if (zombie.classId == -1)
{
zombie.classId = _biomeData.GetZombieClass(world, chunk, (int)spawnPos.x, (int)spawnPos.z, _prng);
if (zombie.classId == -1)
{
int lastClassId = -1;
zombie.classId = EntityGroups.GetRandomFromGroup("ZombiesAll", ref lastClassId);
#if DEBUG
Log.Out("Used fallback for zombie class!");
#endif
}
}
EntityZombie zombieEnt = EntityFactory.CreateEntity(zombie.classId, spawnPos) as EntityZombie;
if (zombieEnt == null)
{
#if DEBUG
Log.Error("[WalkerSim] Unable to create zombie entity!, Entity Id: {0}, Pos: {1}", zombie.classId, spawnPos);
#endif
return(false);
}
zombieEnt.bIsChunkObserver = true;
// TODO: Figure out a better way to make them walk towards something.
if (true)
{
// Send zombie towards a random position in the zone.
Vector3 targetPos = GetRandomZonePos(zone);
if (targetPos == Vector3.zero)
{
zombieEnt.SetInvestigatePosition(zone.center, 6000, false);
}
else
{
zombieEnt.SetInvestigatePosition(targetPos, 6000, false);
}
}
// If the zombie was previously damaged take health to this one.
if (zombie.health != -1)
{
zombieEnt.Health = zombie.health;
}
else
{
zombie.health = zombieEnt.Health;
}
zombieEnt.IsHordeZombie = true;
zombieEnt.IsBloodMoon = _state.IsBloodMoon;
zombieEnt.SetSpawnerSource(EnumSpawnerSource.StaticSpawner);
world.SpawnEntityInWorld(zombieEnt);
zombie.entityId = zombieEnt.entityId;
zombie.currentZone = zone;
zombie.lifeTime = world.GetWorldTime();
zone.numZombies++;
#if DEBUG
Log.Out("[WalkerSim] Spawned zombie {0} at {1}", zombieEnt, spawnPos);
#endif
lock (_activeZombies)
{
_activeZombies.Add(zombie);
}
return(true);
}
bool UpdateActiveZombie(ZombieAgent zombie)
{
var world = GameManager.Instance.World;
int maxPerZone = MaxZombiesPerZone();
bool removeZombie = false;
var worldTime = world.GetWorldTime();
var timeAlive = worldTime - zombie.lifeTime;
var currentZone = zombie.currentZone as PlayerZone;
if (currentZone != null)
{
currentZone.numZombies--;
if (currentZone.numZombies < 0)
{
currentZone.numZombies = 0;
}
}
zombie.currentZone = null;
Vector3 oldPos = new Vector3 {
x = zombie.pos.x, y = zombie.pos.y, z = zombie.pos.z
};
EntityZombie ent = world.GetEntity(zombie.entityId) as EntityZombie;
if (ent == null)
{
#if DEBUG
Log.Out("[WalkerSim] Failed to get zombie with entity id {0}", zombie.entityId);
#endif
removeZombie = true;
RespawnInactiveZombie(zombie);
}
else
{
zombie.pos = ent.GetPosition();
zombie.health = ((EntityZombie)ent).Health;
zombie.dir = -ent.rotation;
if (ent.IsDead())
{
removeZombie = true;
RespawnInactiveZombie(zombie);
}
else
{
List <PlayerZone> zones = _playerZones.FindAllByPos2D(ent.GetPosition());
if (zones.Count == 0 && timeAlive >= MinZombieLifeTime)
{
#if DEBUG
Log.Out("[WalkerSim] Zombie {0} out of range, turning inactive", ent);
#endif
removeZombie = true;
world.RemoveEntity(zombie.entityId, EnumRemoveEntityReason.Despawned);
zombie.entityId = -1;
zombie.currentZone = null;
TurnZombieInactive(zombie);
}
else
{
foreach (var zone in zones)
{
if (zone.numZombies + 1 < maxPerZone)
{
zone.numZombies++;
zombie.currentZone = zone;
// If the zombie is inside a player zone make sure we renew the life time.
zombie.lifeTime = worldTime;
break;
}
}
}
}
}
return(removeZombie);
}
public ZombieSpawnRequest(ZombieAgent zombie, PlayerZone zone)
{
this.zombie = zombie;
this.zone = zone;
}