void UpdateGuidedNPCPosition(long now, long interval, float minPosDist, float minAngDist)
{
if (now < guidedNextUpdate)
{
return;
}
Vec3f pos = this.Position;
Angles ang = this.Angles;
VobEnvironment env = this.Environment;
if (now - guidedNextUpdate < TimeSpan.TicksPerSecond)
{
// nothing really changed, only update every second
if (guidedLastMovement == this.movement &&
pos.GetDistance(guidedLastPos) < minPosDist &&
!ang.DifferenceIsBigger(guidedLastAng, minAngDist) &&
env == guidedLastEnv)
{
return;
}
}
guidedLastMovement = this.movement;
guidedLastPos = pos;
guidedLastAng = ang;
guidedLastEnv = env;
Messages.WritePosAngMessage(this, pos, ang, env);
guidedNextUpdate = now + interval;
//this.ScriptObject.OnPosChanged();
}
public static void ReadPosAng(PacketReader stream, GameClient client, World world)
{
int id = stream.ReadUShort();
if (world.TryGetVob(id, out NPC npc) && (npc.guide == client || npc.client == client))
{
var oldPos = npc.Position;
var oldAng = npc.Angles;
var oldMovement = npc.Movement;
var pos = stream.ReadCompressedPosition();
var ang = stream.ReadCompressedAngles();
int bitfield = stream.ReadShort();
bool inAir = (bitfield & 0x8000) != 0;
NPCMovement movement = (NPCMovement)((bitfield >> 12) & 0x7);
float waterDepth = ((bitfield >> 6) & 0x3F) / (float)0x3F;
float waterLevel = (bitfield & 0x3F) / (float)0x3F;
VobEnvironment env = new VobEnvironment(inAir, waterLevel, waterDepth);
npc.movement = movement;
npc.environment = env;
npc.SetPosAng(pos, ang, client);
if (npc == client.Character)
{
client.UpdateVobList(world, pos);
}
OnNPCMove?.Invoke(npc, oldPos, oldAng, oldMovement);
}
}
public static void WritePosAngMessage(NPC npc, Vec3f pos, Angles ang, VobEnvironment env)
{
PacketWriter stream = GameClient.SetupStream(ClientMessages.GuidedNPCMessage);
stream.Write((ushort)npc.ID);
stream.WriteCompressedPosition(pos);
stream.WriteCompressedAngles(ang);
// compress environment & npc movement
int bitfield = env.InAir ? 0x8000 : 0;
bitfield |= (int)npc.movement << 12;
bitfield |= (int)(env.WaterDepth * 0x3F) << 6;
bitfield |= (int)(env.WaterLevel * 0x3F);
stream.Write((short)bitfield);
GameClient.Send(stream, NetPriority.Low, NetReliability.Unreliable);
}