/// <summary>
/// PushEntity
/// Does not change the entities velocity at all
/// </summary>
private static trace_t PushEntity(edict_t ent, ref v3f push)
{
v3f end;
Mathlib.VectorAdd(ref ent.v.origin, ref push, out end);
trace_t trace;
if (ent.v.movetype == Movetypes.MOVETYPE_FLYMISSILE)
{
trace = Move(ref ent.v.origin, ref ent.v.mins, ref ent.v.maxs, ref end, MOVE_MISSILE, ent);
}
else if (ent.v.solid == Solids.SOLID_TRIGGER || ent.v.solid == Solids.SOLID_NOT)
{
// only clip against bmodels
trace = Move(ref ent.v.origin, ref ent.v.mins, ref ent.v.maxs, ref end, MOVE_NOMONSTERS, ent);
}
else
{
trace = Move(ref ent.v.origin, ref ent.v.mins, ref ent.v.maxs, ref end, MOVE_NORMAL, ent);
}
Mathlib.Copy(ref trace.endpos, out ent.v.origin);
LinkEdict(ent, true);
if (trace.ent != null)
{
Impact(ent, trace.ent);
}
return(trace);
}
/// <summary>
/// SV_ClientThink
/// the move fields specify an intended velocity in pix/sec
/// the angle fields specify an exact angular motion in degrees
/// </summary>
static void ClientThink()
{
if (_Player.v.movetype == Movetypes.MOVETYPE_NONE)
{
return;
}
_OnGround = ((int)_Player.v.flags & EdictFlags.FL_ONGROUND) != 0;
DropPunchAngle();
//
// if dead, behave differently
//
if (_Player.v.health <= 0)
{
return;
}
//
// angles
// show 1/3 the pitch angle and all the roll angle
_Cmd = Host.HostClient.cmd;
v3f v_angle;
Mathlib.VectorAdd(ref _Player.v.v_angle, ref _Player.v.punchangle, out v_angle);
Vector3 pang = Common.ToVector(ref _Player.v.angles);
Vector3 pvel = Common.ToVector(ref _Player.v.velocity);
_Player.v.angles.z = View.CalcRoll(ref pang, ref pvel) * 4;
if (_Player.v.fixangle == 0)
{
_Player.v.angles.x = -v_angle.x / 3;
_Player.v.angles.y = v_angle.y;
}
if (((int)_Player.v.flags & EdictFlags.FL_WATERJUMP) != 0)
{
WaterJump();
return;
}
//
// walk
//
if ((_Player.v.waterlevel >= 2) && (_Player.v.movetype != Movetypes.MOVETYPE_NOCLIP))
{
WaterMove();
return;
}
AirMove();
}
/// <summary>
/// SV_PushMove
/// </summary>
static void PushMove(edict_t pusher, float movetime)
{
if (pusher.v.velocity.IsEmpty)
{
pusher.v.ltime += movetime;
return;
}
v3f move, mins, maxs;
Mathlib.VectorScale(ref pusher.v.velocity, movetime, out move);
Mathlib.VectorAdd(ref pusher.v.absmin, ref move, out mins);
Mathlib.VectorAdd(ref pusher.v.absmax, ref move, out maxs);
v3f pushorig = pusher.v.origin;
edict_t[] moved_edict = new edict_t[QDef.MAX_EDICTS];
v3f[] moved_from = new v3f[QDef.MAX_EDICTS];
// move the pusher to it's final position
Mathlib.VectorAdd(ref pusher.v.origin, ref move, out pusher.v.origin);
pusher.v.ltime += movetime;
LinkEdict(pusher, false);
// see if any solid entities are inside the final position
int num_moved = 0;
for (int e = 1; e < sv.num_edicts; e++)
{
edict_t check = sv.edicts[e];
if (check.free)
{
continue;
}
if (check.v.movetype == Movetypes.MOVETYPE_PUSH ||
check.v.movetype == Movetypes.MOVETYPE_NONE ||
check.v.movetype == Movetypes.MOVETYPE_NOCLIP)
{
continue;
}
// if the entity is standing on the pusher, it will definately be moved
if (!(((int)check.v.flags & EdictFlags.FL_ONGROUND) != 0 && ProgToEdict(check.v.groundentity) == pusher))
{
if (check.v.absmin.x >= maxs.x || check.v.absmin.y >= maxs.y ||
check.v.absmin.z >= maxs.z || check.v.absmax.x <= mins.x ||
check.v.absmax.y <= mins.y || check.v.absmax.z <= mins.z)
{
continue;
}
// see if the ent's bbox is inside the pusher's final position
if (TestEntityPosition(check) == null)
{
continue;
}
}
// remove the onground flag for non-players
if (check.v.movetype != Movetypes.MOVETYPE_WALK)
{
check.v.flags = (int)check.v.flags & ~EdictFlags.FL_ONGROUND;
}
v3f entorig = check.v.origin;
moved_from[num_moved] = entorig;
moved_edict[num_moved] = check;
num_moved++;
// try moving the contacted entity
pusher.v.solid = Solids.SOLID_NOT;
PushEntity(check, ref move);
pusher.v.solid = Solids.SOLID_BSP;
// if it is still inside the pusher, block
edict_t block = TestEntityPosition(check);
if (block != null)
{
// fail the move
if (check.v.mins.x == check.v.maxs.x)
{
continue;
}
if (check.v.solid == Solids.SOLID_NOT || check.v.solid == Solids.SOLID_TRIGGER)
{
// corpse
check.v.mins.x = check.v.mins.y = 0;
check.v.maxs = check.v.mins;
continue;
}
check.v.origin = entorig;
LinkEdict(check, true);
pusher.v.origin = pushorig;
LinkEdict(pusher, false);
pusher.v.ltime -= movetime;
// if the pusher has a "blocked" function, call it
// otherwise, just stay in place until the obstacle is gone
if (pusher.v.blocked != 0)
{
Progs.GlobalStruct.self = EdictToProg(pusher);
Progs.GlobalStruct.other = EdictToProg(check);
Progs.Execute(pusher.v.blocked);
}
// move back any entities we already moved
for (int i = 0; i < num_moved; i++)
{
moved_edict[i].v.origin = moved_from[i];
LinkEdict(moved_edict[i], false);
}
return;
}
}
}
/// <summary>
/// SV_LinkEdict
///
/// Needs to be called any time an entity changes origin, mins, maxs, or solid
/// flags ent->v.modified
/// sets ent->v.absmin and ent->v.absmax
/// if touchtriggers, calls prog functions for the intersected triggers
/// </summary>
public static void LinkEdict(edict_t ent, bool touch_triggers)
{
if (ent.area.Prev != null)
{
UnlinkEdict(ent); // unlink from old position
}
if (ent == sv.edicts[0])
{
return; // don't add the world
}
if (ent.free)
{
return;
}
// set the abs box
Mathlib.VectorAdd(ref ent.v.origin, ref ent.v.mins, out ent.v.absmin);
Mathlib.VectorAdd(ref ent.v.origin, ref ent.v.maxs, out ent.v.absmax);
//
// to make items easier to pick up and allow them to be grabbed off
// of shelves, the abs sizes are expanded
//
if (((int)ent.v.flags & EdictFlags.FL_ITEM) != 0)
{
ent.v.absmin.x -= 15;
ent.v.absmin.y -= 15;
ent.v.absmax.x += 15;
ent.v.absmax.y += 15;
}
else
{ // because movement is clipped an epsilon away from an actual edge,
// we must fully check even when bounding boxes don't quite touch
ent.v.absmin.x -= 1;
ent.v.absmin.y -= 1;
ent.v.absmin.z -= 1;
ent.v.absmax.x += 1;
ent.v.absmax.y += 1;
ent.v.absmax.z += 1;
}
// link to PVS leafs
ent.num_leafs = 0;
if (ent.v.modelindex != 0)
{
FindTouchedLeafs(ent, sv.worldmodel.nodes[0]);
}
if (ent.v.solid == Solids.SOLID_NOT)
{
return;
}
// find the first node that the ent's box crosses
areanode_t node = _AreaNodes[0];
while (true)
{
if (node.axis == -1)
{
break;
}
if (Mathlib.Comp(ref ent.v.absmin, node.axis) > node.dist)
{
node = node.children[0];
}
else if (Mathlib.Comp(ref ent.v.absmax, node.axis) < node.dist)
{
node = node.children[1];
}
else
{
break; // crosses the node
}
}
// link it in
if (ent.v.solid == Solids.SOLID_TRIGGER)
{
ent.area.InsertBefore(node.trigger_edicts);
}
else
{
ent.area.InsertBefore(node.solid_edicts);
}
// if touch_triggers, touch all entities at this node and decend for more
if (touch_triggers)
{
TouchLinks(ent, _AreaNodes[0]);
}
}
/*
* =============
* PF_aim
*
* Pick a vector for the player to shoot along
* vector aim(entity, missilespeed)
* =============
*/
static void PF_aim()
{
edict_t ent = GetEdict(OFS.OFS_PARM0);
float speed = GetFloat(OFS.OFS_PARM1);
Vector3 start = Common.ToVector(ref ent.v.origin);
start.Z += 20;
// try sending a trace straight
Vector3 dir;
Mathlib.Copy(ref Progs.GlobalStruct.v_forward, out dir);
Vector3 end = start + dir * 2048;
trace_t tr = Server.Move(ref start, ref Common.ZeroVector, ref Common.ZeroVector, ref end, 0, ent);
if (tr.ent != null && tr.ent.v.takedamage == Damages.DAMAGE_AIM &&
(Host.TeamPlay == 0 || ent.v.team <= 0 || ent.v.team != tr.ent.v.team))
{
ReturnVector(ref Progs.GlobalStruct.v_forward);
return;
}
// try all possible entities
Vector3 bestdir = dir;
float bestdist = Server.Aim;
edict_t bestent = null;
for (int i = 1; i < Server.sv.num_edicts; i++)
{
edict_t check = Server.sv.edicts[i];
if (check.v.takedamage != Damages.DAMAGE_AIM)
{
continue;
}
if (check == ent)
{
continue;
}
if (Host.TeamPlay != 0 && ent.v.team > 0 && ent.v.team == check.v.team)
{
continue; // don't aim at teammate
}
v3f tmp;
Mathlib.VectorAdd(ref check.v.mins, ref check.v.maxs, out tmp);
Mathlib.VectorMA(ref check.v.origin, 0.5f, ref tmp, out tmp);
Mathlib.Copy(ref tmp, out end);
dir = end - start;
Mathlib.Normalize(ref dir);
float dist = Vector3.Dot(dir, Common.ToVector(ref Progs.GlobalStruct.v_forward));
if (dist < bestdist)
{
continue; // to far to turn
}
tr = Server.Move(ref start, ref Common.ZeroVector, ref Common.ZeroVector, ref end, 0, ent);
if (tr.ent == check)
{ // can shoot at this one
bestdist = dist;
bestent = check;
}
}
if (bestent != null)
{
v3f dir2, end2;
Mathlib.VectorSubtract(ref bestent.v.origin, ref ent.v.origin, out dir2);
float dist = Mathlib.DotProduct(ref dir2, ref Progs.GlobalStruct.v_forward);
Mathlib.VectorScale(ref Progs.GlobalStruct.v_forward, dist, out end2);
end2.z = dir2.z;
Mathlib.Normalize(ref end2);
ReturnVector(ref end2);
}
else
{
ReturnVector(ref bestdir);
}
}
/// <summary>
/// SV_movestep
/// Called by monster program code.
/// The move will be adjusted for slopes and stairs, but if the move isn't
/// possible, no move is done, false is returned, and
/// pr_global_struct.trace_normal is set to the normal of the blocking wall
/// </summary>
public static bool MoveStep(edict_t ent, ref v3f move, bool relink)
{
trace_t trace;
// try the move
v3f oldorg = ent.v.origin;
v3f neworg;
Mathlib.VectorAdd(ref ent.v.origin, ref move, out neworg);
// flying monsters don't step up
if (((int)ent.v.flags & (EdictFlags.FL_SWIM | EdictFlags.FL_FLY)) != 0)
{
// try one move with vertical motion, then one without
for (int i = 0; i < 2; i++)
{
Mathlib.VectorAdd(ref ent.v.origin, ref move, out neworg);
edict_t enemy = ProgToEdict(ent.v.enemy);
if (i == 0 && enemy != sv.edicts[0])
{
float dz = ent.v.origin.z - enemy.v.origin.z;
if (dz > 40)
{
neworg.z -= 8;
}
if (dz < 30)
{
neworg.z += 8;
}
}
trace = Move(ref ent.v.origin, ref ent.v.mins, ref ent.v.maxs, ref neworg, 0, ent);
if (trace.fraction == 1)
{
if (((int)ent.v.flags & EdictFlags.FL_SWIM) != 0 &&
PointContents(ref trace.endpos) == Contents.CONTENTS_EMPTY)
{
return(false); // swim monster left water
}
Mathlib.Copy(ref trace.endpos, out ent.v.origin);
if (relink)
{
LinkEdict(ent, true);
}
return(true);
}
if (enemy == sv.edicts[0])
{
break;
}
}
return(false);
}
// push down from a step height above the wished position
neworg.z += STEPSIZE;
v3f end = neworg;
end.z -= STEPSIZE * 2;
trace = Move(ref neworg, ref ent.v.mins, ref ent.v.maxs, ref end, 0, ent);
if (trace.allsolid)
{
return(false);
}
if (trace.startsolid)
{
neworg.z -= STEPSIZE;
trace = Move(ref neworg, ref ent.v.mins, ref ent.v.maxs, ref end, 0, ent);
if (trace.allsolid || trace.startsolid)
{
return(false);
}
}
if (trace.fraction == 1)
{
// if monster had the ground pulled out, go ahead and fall
if (((int)ent.v.flags & EdictFlags.FL_PARTIALGROUND) != 0)
{
Mathlib.VectorAdd(ref ent.v.origin, ref move, out ent.v.origin);
if (relink)
{
LinkEdict(ent, true);
}
ent.v.flags = (int)ent.v.flags & ~EdictFlags.FL_ONGROUND;
return(true);
}
return(false); // walked off an edge
}
// check point traces down for dangling corners
Mathlib.Copy(ref trace.endpos, out ent.v.origin);
if (!CheckBottom(ent))
{
if (((int)ent.v.flags & EdictFlags.FL_PARTIALGROUND) != 0)
{
// entity had floor mostly pulled out from underneath it
// and is trying to correct
if (relink)
{
LinkEdict(ent, true);
}
return(true);
}
ent.v.origin = oldorg;
return(false);
}
if (((int)ent.v.flags & EdictFlags.FL_PARTIALGROUND) != 0)
{
ent.v.flags = (int)ent.v.flags & ~EdictFlags.FL_PARTIALGROUND;
}
ent.v.groundentity = EdictToProg(trace.ent);
// the move is ok
if (relink)
{
LinkEdict(ent, true);
}
return(true);
}
/// <summary>
/// SV_CheckBottom
/// </summary>
public static bool CheckBottom(edict_t ent)
{
v3f mins, maxs;
Mathlib.VectorAdd(ref ent.v.origin, ref ent.v.mins, out mins);
Mathlib.VectorAdd(ref ent.v.origin, ref ent.v.maxs, out maxs);
// if all of the points under the corners are solid world, don't bother
// with the tougher checks
// the corners must be within 16 of the midpoint
Vector3 start;
start.Z = mins.z - 1;
for (int x = 0; x <= 1; x++)
{
for (int y = 0; y <= 1; y++)
{
start.X = (x != 0 ? maxs.x : mins.x);
start.Y = (y != 0 ? maxs.y : mins.y);
if (PointContents(ref start) != Contents.CONTENTS_SOLID)
{
goto RealCheck;
}
}
}
return(true); // we got out easy
RealCheck:
//
// check it for real...
//
start.Z = mins.z;
// the midpoint must be within 16 of the bottom
start.X = (mins.x + maxs.x) * 0.5f;
start.Y = (mins.y + maxs.y) * 0.5f;
Vector3 stop = start;
stop.Z -= 2 * STEPSIZE;
trace_t trace = Move(ref start, ref Common.ZeroVector, ref Common.ZeroVector, ref stop, 1, ent);
if (trace.fraction == 1.0)
{
return(false);
}
float mid = trace.endpos.Z;
float bottom = mid;
// the corners must be within 16 of the midpoint
for (int x = 0; x <= 1; x++)
{
for (int y = 0; y <= 1; y++)
{
start.X = stop.X = (x != 0 ? maxs.x : mins.x);
start.Y = stop.Y = (y != 0 ? maxs.y : mins.y);
trace = Move(ref start, ref Common.ZeroVector, ref Common.ZeroVector, ref stop, 1, ent);
if (trace.fraction != 1.0 && trace.endpos.Z > bottom)
{
bottom = trace.endpos.Z;
}
if (trace.fraction == 1.0 || mid - trace.endpos.Z > STEPSIZE)
{
return(false);
}
}
}
return(true);
}
/// <summary>
/// SV_StartSound
/// Each entity can have eight independant sound sources, like voice,
/// weapon, feet, etc.
///
/// Channel 0 is an auto-allocate channel, the others override anything
/// allready running on that entity/channel pair.
///
/// An attenuation of 0 will play full volume everywhere in the level.
/// Larger attenuations will drop off. (max 4 attenuation)
/// </summary>
public static void StartSound(edict_t entity, int channel, string sample, int volume, float attenuation)
{
if (volume < 0 || volume > 255)
{
Sys.Error("SV_StartSound: volume = {0}", volume);
}
if (attenuation < 0 || attenuation > 4)
{
Sys.Error("SV_StartSound: attenuation = {0}", attenuation);
}
if (channel < 0 || channel > 7)
{
Sys.Error("SV_StartSound: channel = {0}", channel);
}
if (sv.datagram.Length > QDef.MAX_DATAGRAM - 16)
{
return;
}
// find precache number for sound
int sound_num;
for (sound_num = 1; sound_num < QDef.MAX_SOUNDS && sv.sound_precache[sound_num] != null; sound_num++)
{
if (sample == sv.sound_precache[sound_num])
{
break;
}
}
if (sound_num == QDef.MAX_SOUNDS || String.IsNullOrEmpty(sv.sound_precache[sound_num]))
{
Con.Print("SV_StartSound: {0} not precacheed\n", sample);
return;
}
int ent = NumForEdict(entity);
channel = (ent << 3) | channel;
int field_mask = 0;
if (volume != Sound.DEFAULT_SOUND_PACKET_VOLUME)
{
field_mask |= Protocol.SND_VOLUME;
}
if (attenuation != Sound.DEFAULT_SOUND_PACKET_ATTENUATION)
{
field_mask |= Protocol.SND_ATTENUATION;
}
// directed messages go only to the entity the are targeted on
sv.datagram.WriteByte(Protocol.svc_sound);
sv.datagram.WriteByte(field_mask);
if ((field_mask & Protocol.SND_VOLUME) != 0)
{
sv.datagram.WriteByte(volume);
}
if ((field_mask & Protocol.SND_ATTENUATION) != 0)
{
sv.datagram.WriteByte((int)(attenuation * 64));
}
sv.datagram.WriteShort(channel);
sv.datagram.WriteByte(sound_num);
v3f v;
Mathlib.VectorAdd(ref entity.v.mins, ref entity.v.maxs, out v);
Mathlib.VectorMA(ref entity.v.origin, 0.5f, ref v, out v);
sv.datagram.WriteCoord(v.x);
sv.datagram.WriteCoord(v.y);
sv.datagram.WriteCoord(v.z);
}
