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quakequest/Projects/Android/jni/darkplaces/sv_user.c
Simon 17498c172b Some project restructuring
2021-02-02 22:53:37 +00:00

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/*
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// sv_user.c -- server code for moving users
#include "quakedef.h"
#include "sv_demo.h"
#define DEBUGMOVES 0
static usercmd_t cmd;
extern cvar_t sv_autodemo_perclient;
/*
===============
SV_SetIdealPitch
===============
*/
#define MAX_FORWARD 6
void SV_SetIdealPitch (void)
{
prvm_prog_t *prog = SVVM_prog;
float angleval, sinval, cosval, step, dir;
trace_t tr;
vec3_t top, bottom;
float z[MAX_FORWARD];
int i, j;
int steps;
if (!((int)PRVM_serveredictfloat(host_client->edict, flags) & FL_ONGROUND))
return;
angleval = PRVM_serveredictvector(host_client->edict, angles)[YAW] * M_PI*2 / 360;
sinval = sin(angleval);
cosval = cos(angleval);
for (i=0 ; i<MAX_FORWARD ; i++)
{
top[0] = PRVM_serveredictvector(host_client->edict, origin)[0] + cosval*(i+3)*12;
top[1] = PRVM_serveredictvector(host_client->edict, origin)[1] + sinval*(i+3)*12;
top[2] = PRVM_serveredictvector(host_client->edict, origin)[2] + PRVM_serveredictvector(host_client->edict, view_ofs)[2];
bottom[0] = top[0];
bottom[1] = top[1];
bottom[2] = top[2] - 160;
tr = SV_TraceLine(top, bottom, MOVE_NOMONSTERS, host_client->edict, SUPERCONTENTS_SOLID);
// if looking at a wall, leave ideal the way is was
if (tr.startsolid)
return;
// near a dropoff
if (tr.fraction == 1)
return;
z[i] = top[2] + tr.fraction*(bottom[2]-top[2]);
}
dir = 0;
steps = 0;
for (j=1 ; j<i ; j++)
{
step = z[j] - z[j-1];
if (step > -ON_EPSILON && step < ON_EPSILON)
continue;
// mixed changes
if (dir && ( step-dir > ON_EPSILON || step-dir < -ON_EPSILON ) )
return;
steps++;
dir = step;
}
if (!dir)
{
PRVM_serveredictfloat(host_client->edict, idealpitch) = 0;
return;
}
if (steps < 2)
return;
PRVM_serveredictfloat(host_client->edict, idealpitch) = -dir * sv_idealpitchscale.value;
}
static vec3_t wishdir, forward, right, up;
static float wishspeed;
static qboolean onground;
/*
==================
SV_UserFriction
==================
*/
static void SV_UserFriction (void)
{
prvm_prog_t *prog = SVVM_prog;
float speed, newspeed, control, friction;
vec3_t start, stop;
trace_t trace;
speed = sqrt(PRVM_serveredictvector(host_client->edict, velocity)[0]*PRVM_serveredictvector(host_client->edict, velocity)[0]+PRVM_serveredictvector(host_client->edict, velocity)[1]*PRVM_serveredictvector(host_client->edict, velocity)[1]);
if (!speed)
return;
// if the leading edge is over a dropoff, increase friction
start[0] = stop[0] = PRVM_serveredictvector(host_client->edict, origin)[0] + PRVM_serveredictvector(host_client->edict, velocity)[0]/speed*16;
start[1] = stop[1] = PRVM_serveredictvector(host_client->edict, origin)[1] + PRVM_serveredictvector(host_client->edict, velocity)[1]/speed*16;
start[2] = PRVM_serveredictvector(host_client->edict, origin)[2] + PRVM_serveredictvector(host_client->edict, mins)[2];
stop[2] = start[2] - 34;
trace = SV_TraceLine(start, stop, MOVE_NOMONSTERS, host_client->edict, SV_GenericHitSuperContentsMask(host_client->edict));
if (trace.fraction == 1.0)
friction = sv_friction.value*sv_edgefriction.value;
else
friction = sv_friction.value;
// apply friction
control = speed < sv_stopspeed.value ? sv_stopspeed.value : speed;
newspeed = speed - sv.frametime*control*friction;
if (newspeed < 0)
newspeed = 0;
else
newspeed /= speed;
VectorScale(PRVM_serveredictvector(host_client->edict, velocity), newspeed, PRVM_serveredictvector(host_client->edict, velocity));
}
/*
==============
SV_Accelerate
==============
*/
static void SV_Accelerate (void)
{
prvm_prog_t *prog = SVVM_prog;
int i;
float addspeed, accelspeed, currentspeed;
currentspeed = DotProduct (PRVM_serveredictvector(host_client->edict, velocity), wishdir);
addspeed = wishspeed - currentspeed;
if (addspeed <= 0)
return;
accelspeed = sv_accelerate.value*sv.frametime*wishspeed;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i=0 ; i<3 ; i++)
PRVM_serveredictvector(host_client->edict, velocity)[i] += accelspeed*wishdir[i];
}
extern cvar_t sv_gameplayfix_q2airaccelerate;
static void SV_AirAccelerate (vec3_t wishveloc)
{
prvm_prog_t *prog = SVVM_prog;
int i;
float addspeed, wishspd, accelspeed, currentspeed;
wishspd = VectorNormalizeLength (wishveloc);
if (wishspd > sv_maxairspeed.value)
wishspd = sv_maxairspeed.value;
currentspeed = DotProduct (PRVM_serveredictvector(host_client->edict, velocity), wishveloc);
addspeed = wishspd - currentspeed;
if (addspeed <= 0)
return;
accelspeed = (sv_airaccelerate.value < 0 ? sv_accelerate.value : sv_airaccelerate.value)*(sv_gameplayfix_q2airaccelerate.integer ? wishspd : wishspeed) * sv.frametime;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i=0 ; i<3 ; i++)
PRVM_serveredictvector(host_client->edict, velocity)[i] += accelspeed*wishveloc[i];
}
static void DropPunchAngle (void)
{
prvm_prog_t *prog = SVVM_prog;
vec_t len;
vec3_t punchangle, punchvector;
VectorCopy(PRVM_serveredictvector(host_client->edict, punchangle), punchangle);
VectorCopy(PRVM_serveredictvector(host_client->edict, punchvector), punchvector);
len = VectorNormalizeLength(punchangle);
if (len > 0)
{
len -= 10*sv.frametime;
if (len < 0)
len = 0;
VectorScale(punchangle, len, punchangle);
}
len = VectorNormalizeLength(punchvector);
if (len > 0)
{
len -= 20*sv.frametime;
if (len < 0)
len = 0;
VectorScale(punchvector, len, punchvector);
}
VectorCopy(punchangle, PRVM_serveredictvector(host_client->edict, punchangle));
VectorCopy(punchvector, PRVM_serveredictvector(host_client->edict, punchvector));
}
/*
===================
SV_WaterMove
===================
*/
static void SV_WaterMove (void)
{
prvm_prog_t *prog = SVVM_prog;
int i;
vec3_t wishvel, v_angle;
vec_t speed, newspeed, wishspeed, addspeed, accelspeed, temp;
// user intentions
VectorCopy(PRVM_serveredictvector(host_client->edict, v_angle), v_angle);
AngleVectors(v_angle, forward, right, up);
for (i=0 ; i<3 ; i++)
wishvel[i] = forward[i]*cmd.forwardmove + right[i]*cmd.sidemove;
if (!cmd.forwardmove && !cmd.sidemove && !cmd.upmove)
wishvel[2] -= 60; // drift towards bottom
else
wishvel[2] += cmd.upmove;
wishspeed = VectorLength(wishvel);
if (wishspeed > sv_maxspeed.value)
{
temp = sv_maxspeed.value/wishspeed;
VectorScale (wishvel, temp, wishvel);
wishspeed = sv_maxspeed.value;
}
wishspeed *= 0.7;
// water friction
speed = VectorLength(PRVM_serveredictvector(host_client->edict, velocity));
if (speed)
{
newspeed = speed - sv.frametime * speed * (sv_waterfriction.value < 0 ? sv_friction.value : sv_waterfriction.value);
if (newspeed < 0)
newspeed = 0;
temp = newspeed/speed;
VectorScale(PRVM_serveredictvector(host_client->edict, velocity), temp, PRVM_serveredictvector(host_client->edict, velocity));
}
else
newspeed = 0;
// water acceleration
if (!wishspeed)
return;
addspeed = wishspeed - newspeed;
if (addspeed <= 0)
return;
VectorNormalize (wishvel);
accelspeed = (sv_wateraccelerate.value < 0 ? sv_accelerate.value : sv_wateraccelerate.value) * wishspeed * sv.frametime;
if (accelspeed > addspeed)
accelspeed = addspeed;
for (i=0 ; i<3 ; i++)
PRVM_serveredictvector(host_client->edict, velocity)[i] += accelspeed * wishvel[i];
}
static void SV_WaterJump (void)
{
prvm_prog_t *prog = SVVM_prog;
if (sv.time > PRVM_serveredictfloat(host_client->edict, teleport_time) || !PRVM_serveredictfloat(host_client->edict, waterlevel))
{
PRVM_serveredictfloat(host_client->edict, flags) = (int)PRVM_serveredictfloat(host_client->edict, flags) & ~FL_WATERJUMP;
PRVM_serveredictfloat(host_client->edict, teleport_time) = 0;
}
PRVM_serveredictvector(host_client->edict, velocity)[0] = PRVM_serveredictvector(host_client->edict, movedir)[0];
PRVM_serveredictvector(host_client->edict, velocity)[1] = PRVM_serveredictvector(host_client->edict, movedir)[1];
}
/*
===================
SV_AirMove
===================
*/
static void SV_AirMove (void)
{
prvm_prog_t *prog = SVVM_prog;
int i;
vec3_t wishvel;
float fmove, smove, temp;
// LordHavoc: correct quake movement speed bug when looking up/down
wishvel[0] = wishvel[2] = 0;
wishvel[1] = PRVM_serveredictvector(host_client->edict, angles)[1];
AngleVectors (wishvel, forward, right, up);
fmove = cmd.forwardmove;
smove = cmd.sidemove;
// hack to not let you back into teleporter
if (sv.time < PRVM_serveredictfloat(host_client->edict, teleport_time) && fmove < 0)
fmove = 0;
for (i=0 ; i<3 ; i++)
wishvel[i] = forward[i]*fmove + right[i]*smove;
if ((int)PRVM_serveredictfloat(host_client->edict, movetype) != MOVETYPE_WALK)
wishvel[2] += cmd.upmove;
VectorCopy (wishvel, wishdir);
wishspeed = VectorNormalizeLength(wishdir);
if (wishspeed > sv_maxspeed.value)
{
temp = sv_maxspeed.value/wishspeed;
VectorScale (wishvel, temp, wishvel);
wishspeed = sv_maxspeed.value;
}
if (PRVM_serveredictfloat(host_client->edict, movetype) == MOVETYPE_NOCLIP)
{
// noclip
VectorCopy (wishvel, PRVM_serveredictvector(host_client->edict, velocity));
}
else if (onground)
{
SV_UserFriction ();
SV_Accelerate ();
}
else
{
// not on ground, so little effect on velocity
SV_AirAccelerate (wishvel);
}
}
/*
===================
SV_ClientThink
the move fields specify an intended velocity in pix/sec
the angle fields specify an exact angular motion in degrees
===================
*/
void SV_ClientThink (void)
{
prvm_prog_t *prog = SVVM_prog;
vec3_t v_angle, angles, velocity;
//Con_Printf("clientthink for %ims\n", (int) (sv.frametime * 1000));
SV_ApplyClientMove();
// make sure the velocity is sane (not a NaN)
SV_CheckVelocity(host_client->edict);
// LordHavoc: QuakeC replacement for SV_ClientThink (player movement)
if (PRVM_serverfunction(SV_PlayerPhysics) && sv_playerphysicsqc.integer)
{
PRVM_serverglobalfloat(time) = sv.time;
PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(host_client->edict);
prog->ExecuteProgram(prog, PRVM_serverfunction(SV_PlayerPhysics), "QC function SV_PlayerPhysics is missing");
SV_CheckVelocity(host_client->edict);
return;
}
if (PRVM_serveredictfloat(host_client->edict, movetype) == MOVETYPE_NONE)
return;
onground = ((int)PRVM_serveredictfloat(host_client->edict, flags) & FL_ONGROUND) != 0;
DropPunchAngle ();
// if dead, behave differently
if (PRVM_serveredictfloat(host_client->edict, health) <= 0)
return;
cmd = host_client->cmd;
// angles
// show 1/3 the pitch angle and all the roll angle
VectorAdd (PRVM_serveredictvector(host_client->edict, v_angle), PRVM_serveredictvector(host_client->edict, punchangle), v_angle);
VectorCopy(PRVM_serveredictvector(host_client->edict, angles), angles);
VectorCopy(PRVM_serveredictvector(host_client->edict, velocity), velocity);
PRVM_serveredictvector(host_client->edict, angles)[ROLL] = V_CalcRoll (angles, velocity)*4;
if (!PRVM_serveredictfloat(host_client->edict, fixangle))
{
PRVM_serveredictvector(host_client->edict, angles)[PITCH] = -v_angle[PITCH]/3;
PRVM_serveredictvector(host_client->edict, angles)[YAW] = v_angle[YAW];
}
if ( (int)PRVM_serveredictfloat(host_client->edict, flags) & FL_WATERJUMP )
{
SV_WaterJump ();
SV_CheckVelocity(host_client->edict);
return;
}
/*
// Player is (somehow) outside of the map, or flying, or noclipping
if (PRVM_serveredictfloat(host_client->edict, movetype) != MOVETYPE_NOCLIP && (PRVM_serveredictfloat(host_client->edict, movetype) == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict)))
//if (PRVM_serveredictfloat(host_client->edict, movetype) == MOVETYPE_NOCLIP || PRVM_serveredictfloat(host_client->edict, movetype) == MOVETYPE_FLY || SV_TestEntityPosition (host_client->edict))
{
SV_FreeMove ();
return;
}
*/
// walk
if ((PRVM_serveredictfloat(host_client->edict, waterlevel) >= 2) && (PRVM_serveredictfloat(host_client->edict, movetype) != MOVETYPE_NOCLIP))
{
SV_WaterMove ();
SV_CheckVelocity(host_client->edict);
return;
}
SV_AirMove ();
SV_CheckVelocity(host_client->edict);
}
/*
===================
SV_ReadClientMove
===================
*/
int sv_numreadmoves = 0;
usercmd_t sv_readmoves[CL_MAX_USERCMDS];
static void SV_ReadClientMove (void)
{
prvm_prog_t *prog = SVVM_prog;
int i;
usercmd_t newmove;
usercmd_t *move = &newmove;
memset(move, 0, sizeof(*move));
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
// read ping time
if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_NEHAHRABJP && sv.protocol != PROTOCOL_NEHAHRABJP2 && sv.protocol != PROTOCOL_NEHAHRABJP3 && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5 && sv.protocol != PROTOCOL_DARKPLACES6)
move->sequence = MSG_ReadLong(&sv_message);
move->time = move->clienttime = MSG_ReadFloat(&sv_message);
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
move->receivetime = (float)sv.time;
#if DEBUGMOVES
Con_Printf("%s move%i #%i %ims (%ims) %i %i '%i %i %i' '%i %i %i'\n", move->time > move->receivetime ? "^3read future" : "^4read normal", sv_numreadmoves + 1, move->sequence, (int)floor((move->time - host_client->cmd.time) * 1000.0 + 0.5), (int)floor(move->time * 1000.0 + 0.5), move->impulse, move->buttons, (int)move->viewangles[0], (int)move->viewangles[1], (int)move->viewangles[2], (int)move->forwardmove, (int)move->sidemove, (int)move->upmove);
#endif
// limit reported time to current time
// (incase the client is trying to cheat)
move->time = min(move->time, move->receivetime + sv.frametime);
// read current angles
for (i = 0;i < 3;i++)
{
if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3)
move->viewangles[i] = MSG_ReadAngle8i(&sv_message);
else if (sv.protocol == PROTOCOL_DARKPLACES1)
move->viewangles[i] = MSG_ReadAngle16i(&sv_message);
else if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)
move->viewangles[i] = MSG_ReadAngle32f(&sv_message);
else
move->viewangles[i] = MSG_ReadAngle16i(&sv_message);
}
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
// read movement
move->forwardmove = MSG_ReadCoord16i(&sv_message);
move->sidemove = MSG_ReadCoord16i(&sv_message);
move->upmove = MSG_ReadCoord16i(&sv_message);
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
// read buttons
// be sure to bitwise OR them into the move->buttons because we want to
// accumulate button presses from multiple packets per actual move
if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3 || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5)
move->buttons = MSG_ReadByte(&sv_message);
else
move->buttons = MSG_ReadLong(&sv_message);
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
// read impulse
move->impulse = MSG_ReadByte(&sv_message);
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
// PRYDON_CLIENTCURSOR
if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_NEHAHRABJP && sv.protocol != PROTOCOL_NEHAHRABJP2 && sv.protocol != PROTOCOL_NEHAHRABJP3 && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5)
{
// 30 bytes
move->cursor_screen[0] = MSG_ReadShort(&sv_message) * (1.0f / 32767.0f);
move->cursor_screen[1] = MSG_ReadShort(&sv_message) * (1.0f / 32767.0f);
move->cursor_start[0] = MSG_ReadFloat(&sv_message);
move->cursor_start[1] = MSG_ReadFloat(&sv_message);
move->cursor_start[2] = MSG_ReadFloat(&sv_message);
move->cursor_impact[0] = MSG_ReadFloat(&sv_message);
move->cursor_impact[1] = MSG_ReadFloat(&sv_message);
move->cursor_impact[2] = MSG_ReadFloat(&sv_message);
move->cursor_entitynumber = (unsigned short)MSG_ReadShort(&sv_message);
if (move->cursor_entitynumber >= prog->max_edicts)
{
Con_DPrintf("SV_ReadClientMessage: client send bad cursor_entitynumber\n");
move->cursor_entitynumber = 0;
}
// as requested by FrikaC, cursor_trace_ent is reset to world if the
// entity is free at time of receipt
if (PRVM_EDICT_NUM(move->cursor_entitynumber)->priv.server->free)
move->cursor_entitynumber = 0;
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
}
// if the previous move has not been applied yet, we need to accumulate
// the impulse/buttons from it
if (!host_client->cmd.applied)
{
if (!move->impulse)
move->impulse = host_client->cmd.impulse;
move->buttons |= host_client->cmd.buttons;
}
// now store this move for later execution
// (we have to buffer the moves because of old ones being repeated)
if (sv_numreadmoves < CL_MAX_USERCMDS)
sv_readmoves[sv_numreadmoves++] = *move;
// movement packet loss tracking
if(move->sequence)
{
if(move->sequence > host_client->movement_highestsequence_seen)
{
if(host_client->movement_highestsequence_seen)
{
// mark moves in between as lost
if(move->sequence - host_client->movement_highestsequence_seen - 1 < NETGRAPH_PACKETS)
for(i = host_client->movement_highestsequence_seen + 1; i < move->sequence; ++i)
host_client->movement_count[i % NETGRAPH_PACKETS] = -1;
else
memset(host_client->movement_count, -1, sizeof(host_client->movement_count));
}
// mark THIS move as seen for the first time
host_client->movement_count[move->sequence % NETGRAPH_PACKETS] = 1;
// update highest sequence seen
host_client->movement_highestsequence_seen = move->sequence;
}
else
if(host_client->movement_count[move->sequence % NETGRAPH_PACKETS] >= 0)
++host_client->movement_count[move->sequence % NETGRAPH_PACKETS];
}
else
{
host_client->movement_highestsequence_seen = 0;
memset(host_client->movement_count, 0, sizeof(host_client->movement_count));
}
}
static void SV_ExecuteClientMoves(void)
{
prvm_prog_t *prog = SVVM_prog;
int moveindex;
float moveframetime;
double oldframetime;
double oldframetime2;
#ifdef NUM_PING_TIMES
double total;
#endif
if (sv_numreadmoves < 1)
return;
// only start accepting input once the player is spawned
if (!host_client->begun)
return;
#if DEBUGMOVES
Con_Printf("SV_ExecuteClientMoves: read %i moves at sv.time %f\n", sv_numreadmoves, (float)sv.time);
#endif
// disable clientside movement prediction in some cases
if (ceil(max(sv_readmoves[sv_numreadmoves-1].receivetime - sv_readmoves[sv_numreadmoves-1].time, 0) * 1000.0) < sv_clmovement_minping.integer)
host_client->clmovement_disabletimeout = realtime + sv_clmovement_minping_disabletime.value / 1000.0;
// several conditions govern whether clientside movement prediction is allowed
if (sv_readmoves[sv_numreadmoves-1].sequence && sv_clmovement_enable.integer && sv_clmovement_inputtimeout.value > 0 && host_client->clmovement_disabletimeout <= realtime && PRVM_serveredictfloat(host_client->edict, movetype) == MOVETYPE_WALK && (!PRVM_serveredictfloat(host_client->edict, disableclientprediction)))
{
// process the moves in order and ignore old ones
// but always trust the latest move
// (this deals with bogus initial move sequences after level change,
// where the client will eventually catch up with the level change
// and reset its move sequence)
for (moveindex = 0;moveindex < sv_numreadmoves;moveindex++)
{
usercmd_t *move = sv_readmoves + moveindex;
if (host_client->movesequence < move->sequence || moveindex == sv_numreadmoves - 1)
{
#if DEBUGMOVES
Con_Printf("%smove #%i %ims (%ims) %i %i '%i %i %i' '%i %i %i'\n", (move->time - host_client->cmd.time) > sv.frametime * 1.01 ? "^1" : "^2", move->sequence, (int)floor((move->time - host_client->cmd.time) * 1000.0 + 0.5), (int)floor(move->time * 1000.0 + 0.5), move->impulse, move->buttons, (int)move->viewangles[0], (int)move->viewangles[1], (int)move->viewangles[2], (int)move->forwardmove, (int)move->sidemove, (int)move->upmove);
#endif
// this is a new move
move->time = bound(sv.time - 1, move->time, sv.time); // prevent slowhack/speedhack combos
move->time = max(move->time, host_client->cmd.time); // prevent backstepping of time
moveframetime = bound(0, move->time - host_client->cmd.time, min(0.1, sv_clmovement_inputtimeout.value));
// discard (treat like lost) moves with too low distance from
// the previous one to prevent hacks using float inaccuracy
// clients will see this as packet loss in the netgraph
// this should also apply if a move cannot get
// executed because it came too late and
// already was performed serverside
if(moveframetime < 0.0005)
{
// count the move as LOST if we don't
// execute it but it has higher
// sequence count
if(host_client->movesequence)
if(move->sequence > host_client->movesequence)
host_client->movement_count[(move->sequence) % NETGRAPH_PACKETS] = -1;
continue;
}
//Con_Printf("movesequence = %i (%i lost), moveframetime = %f\n", move->sequence, move->sequence ? move->sequence - host_client->movesequence - 1 : 0, moveframetime);
host_client->cmd = *move;
host_client->movesequence = move->sequence;
// if using prediction, we need to perform moves when packets are
// received, even if multiple occur in one frame
// (they can't go beyond the current time so there is no cheat issue
// with this approach, and if they don't send input for a while they
// start moving anyway, so the longest 'lagaport' possible is
// determined by the sv_clmovement_inputtimeout cvar)
if (moveframetime <= 0)
continue;
oldframetime = PRVM_serverglobalfloat(frametime);
oldframetime2 = sv.frametime;
// update ping time for qc to see while executing this move
host_client->ping = host_client->cmd.receivetime - host_client->cmd.time;
// the server and qc frametime values must be changed temporarily
PRVM_serverglobalfloat(frametime) = sv.frametime = moveframetime;
// if move is more than 50ms, split it into two moves (this matches QWSV behavior and the client prediction)
if (sv.frametime > 0.05)
{
PRVM_serverglobalfloat(frametime) = sv.frametime = moveframetime * 0.5f;
SV_Physics_ClientMove();
}
SV_Physics_ClientMove();
sv.frametime = oldframetime2;
PRVM_serverglobalfloat(frametime) = oldframetime;
host_client->clmovement_inputtimeout = sv_clmovement_inputtimeout.value;
}
}
}
else
{
// try to gather button bits from old moves, but only if their time is
// advancing (ones with the same timestamp can't be trusted)
for (moveindex = 0;moveindex < sv_numreadmoves-1;moveindex++)
{
usercmd_t *move = sv_readmoves + moveindex;
if (host_client->cmd.time < move->time)
{
sv_readmoves[sv_numreadmoves-1].buttons |= move->buttons;
if (move->impulse)
sv_readmoves[sv_numreadmoves-1].impulse = move->impulse;
}
}
// now copy the new move
host_client->cmd = sv_readmoves[sv_numreadmoves-1];
host_client->cmd.time = max(host_client->cmd.time, sv.time);
// physics will run up to sv.time, so allow no predicted moves
// before that otherwise, there is a speedhack by turning
// prediction on and off repeatedly on client side because the
// engine would run BOTH client and server physics for the same
// time
host_client->movesequence = 0;
// make sure that normal physics takes over immediately
host_client->clmovement_inputtimeout = 0;
}
// calculate average ping time
host_client->ping = host_client->cmd.receivetime - host_client->cmd.clienttime;
#ifdef NUM_PING_TIMES
host_client->ping_times[host_client->num_pings % NUM_PING_TIMES] = host_client->cmd.receivetime - host_client->cmd.clienttime;
host_client->num_pings++;
for (i=0, total = 0;i < NUM_PING_TIMES;i++)
total += host_client->ping_times[i];
host_client->ping = total / NUM_PING_TIMES;
#endif
}
void SV_ApplyClientMove (void)
{
prvm_prog_t *prog = SVVM_prog;
usercmd_t *move = &host_client->cmd;
int j, movementloss, packetloss;
if (!move->receivetime)
return;
// note: a move can be applied multiple times if the client packets are
// not coming as often as the physics is executed, and the move must be
// applied before running qc each time because the id1 qc had a bug where
// it clears self.button2 in PlayerJump, causing pogostick behavior if
// moves are not applied every time before calling qc
move->applied = true;
// set the edict fields
PRVM_serveredictfloat(host_client->edict, button0) = move->buttons & 1;
PRVM_serveredictfloat(host_client->edict, button2) = (move->buttons & 2)>>1;
if (move->impulse)
PRVM_serveredictfloat(host_client->edict, impulse) = move->impulse;
// only send the impulse to qc once
move->impulse = 0;
movementloss = packetloss = 0;
if(host_client->netconnection)
{
for (j = 0;j < NETGRAPH_PACKETS;j++)
if (host_client->netconnection->incoming_netgraph[j].unreliablebytes == NETGRAPH_LOSTPACKET)
packetloss++;
for (j = 0;j < NETGRAPH_PACKETS;j++)
if (host_client->movement_count[j] < 0)
movementloss++;
}
VectorCopy(move->viewangles, PRVM_serveredictvector(host_client->edict, v_angle));
PRVM_serveredictfloat(host_client->edict, button3) = ((move->buttons >> 2) & 1);
PRVM_serveredictfloat(host_client->edict, button4) = ((move->buttons >> 3) & 1);
PRVM_serveredictfloat(host_client->edict, button5) = ((move->buttons >> 4) & 1);
PRVM_serveredictfloat(host_client->edict, button6) = ((move->buttons >> 5) & 1);
PRVM_serveredictfloat(host_client->edict, button7) = ((move->buttons >> 6) & 1);
PRVM_serveredictfloat(host_client->edict, button8) = ((move->buttons >> 7) & 1);
PRVM_serveredictfloat(host_client->edict, button9) = ((move->buttons >> 11) & 1);
PRVM_serveredictfloat(host_client->edict, button10) = ((move->buttons >> 12) & 1);
PRVM_serveredictfloat(host_client->edict, button11) = ((move->buttons >> 13) & 1);
PRVM_serveredictfloat(host_client->edict, button12) = ((move->buttons >> 14) & 1);
PRVM_serveredictfloat(host_client->edict, button13) = ((move->buttons >> 15) & 1);
PRVM_serveredictfloat(host_client->edict, button14) = ((move->buttons >> 16) & 1);
PRVM_serveredictfloat(host_client->edict, button15) = ((move->buttons >> 17) & 1);
PRVM_serveredictfloat(host_client->edict, button16) = ((move->buttons >> 18) & 1);
PRVM_serveredictfloat(host_client->edict, buttonuse) = ((move->buttons >> 8) & 1);
PRVM_serveredictfloat(host_client->edict, buttonchat) = ((move->buttons >> 9) & 1);
PRVM_serveredictfloat(host_client->edict, cursor_active) = ((move->buttons >> 10) & 1);
VectorSet(PRVM_serveredictvector(host_client->edict, movement), move->forwardmove, move->sidemove, move->upmove);
VectorCopy(move->cursor_screen, PRVM_serveredictvector(host_client->edict, cursor_screen));
VectorCopy(move->cursor_start, PRVM_serveredictvector(host_client->edict, cursor_trace_start));
VectorCopy(move->cursor_impact, PRVM_serveredictvector(host_client->edict, cursor_trace_endpos));
PRVM_serveredictedict(host_client->edict, cursor_trace_ent) = PRVM_EDICT_TO_PROG(PRVM_EDICT_NUM(move->cursor_entitynumber));
PRVM_serveredictfloat(host_client->edict, ping) = host_client->ping * 1000.0;
PRVM_serveredictfloat(host_client->edict, ping_packetloss) = packetloss / (float) NETGRAPH_PACKETS;
PRVM_serveredictfloat(host_client->edict, ping_movementloss) = movementloss / (float) NETGRAPH_PACKETS;
}
static void SV_FrameLost(int framenum)
{
if (host_client->entitydatabase5)
{
EntityFrame5_LostFrame(host_client->entitydatabase5, framenum);
EntityFrameCSQC_LostFrame(host_client, framenum);
}
}
static void SV_FrameAck(int framenum)
{
if (host_client->entitydatabase)
EntityFrame_AckFrame(host_client->entitydatabase, framenum);
else if (host_client->entitydatabase4)
EntityFrame4_AckFrame(host_client->entitydatabase4, framenum, true);
else if (host_client->entitydatabase5)
EntityFrame5_AckFrame(host_client->entitydatabase5, framenum);
}
/*
===================
SV_ReadClientMessage
===================
*/
void SV_ReadClientMessage(void)
{
prvm_prog_t *prog = SVVM_prog;
int cmd, num, start;
char *s, *p, *q;
if(sv_autodemo_perclient.integer >= 2)
SV_WriteDemoMessage(host_client, &(host_client->netconnection->message), true);
//MSG_BeginReading ();
sv_numreadmoves = 0;
for(;;)
{
if (!host_client->active)
{
// a command caused an error
SV_DropClient (false);
return;
}
if (sv_message.badread)
{
Con_Print("SV_ReadClientMessage: badread\n");
SV_DropClient (false);
return;
}
cmd = MSG_ReadByte(&sv_message);
if (cmd == -1)
{
// end of message
// apply the moves that were read this frame
SV_ExecuteClientMoves();
break;
}
switch (cmd)
{
default:
Con_Printf("SV_ReadClientMessage: unknown command char %i (at offset 0x%x)\n", cmd, sv_message.readcount);
if (developer_networking.integer)
Com_HexDumpToConsole(sv_message.data, sv_message.cursize);
SV_DropClient (false);
return;
case clc_nop:
break;
case clc_stringcmd:
// allow reliable messages now as the client is done with initial loading
if (host_client->sendsignon == 2)
host_client->sendsignon = 0;
s = MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring));
q = NULL;
for(p = s; *p; ++p) switch(*p)
{
case 10:
case 13:
if(!q)
q = p;
break;
default:
if(q)
goto clc_stringcmd_invalid; // newline seen, THEN something else -> possible exploit
break;
}
if(q)
*q = 0;
if (strncasecmp(s, "spawn", 5) == 0
|| strncasecmp(s, "begin", 5) == 0
|| strncasecmp(s, "prespawn", 8) == 0)
Cmd_ExecuteString (s, src_client, true);
else if (PRVM_serverfunction(SV_ParseClientCommand))
{
int restorevm_tempstringsbuf_cursize;
restorevm_tempstringsbuf_cursize = prog->tempstringsbuf.cursize;
PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(prog, s);
PRVM_serverglobalfloat(time) = sv.time;
PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(host_client->edict);
prog->ExecuteProgram(prog, PRVM_serverfunction(SV_ParseClientCommand), "QC function SV_ParseClientCommand is missing");
prog->tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
}
else
Cmd_ExecuteString (s, src_client, true);
break;
clc_stringcmd_invalid:
Con_Printf("Received invalid stringcmd from %s\n", host_client->name);
if(developer.integer > 0)
Com_HexDumpToConsole((unsigned char *) s, strlen(s));
break;
case clc_disconnect:
SV_DropClient (false); // client wants to disconnect
return;
case clc_move:
SV_ReadClientMove();
break;
case clc_ackdownloaddata:
start = MSG_ReadLong(&sv_message);
num = MSG_ReadShort(&sv_message);
if (host_client->download_file && host_client->download_started)
{
if (host_client->download_expectedposition == start)
{
int size = (int)FS_FileSize(host_client->download_file);
// a data block was successfully received by the client,
// update the expected position on the next data block
host_client->download_expectedposition = start + num;
// if this was the last data block of the file, it's done
if (host_client->download_expectedposition >= FS_FileSize(host_client->download_file))
{
// tell the client that the download finished
// we need to calculate the crc now
//
// note: at this point the OS probably has the file
// entirely in memory, so this is a faster operation
// now than it was when the download started.
//
// it is also preferable to do this at the end of the
// download rather than the start because it reduces
// potential for Denial Of Service attacks against the
// server.
int crc;
unsigned char *temp;
FS_Seek(host_client->download_file, 0, SEEK_SET);
temp = (unsigned char *) Mem_Alloc(tempmempool, size);
FS_Read(host_client->download_file, temp, size);
crc = CRC_Block(temp, size);
Mem_Free(temp);
// calculated crc, send the file info to the client
// (so that it can verify the data)
Host_ClientCommands("\ncl_downloadfinished %i %i %s\n", size, crc, host_client->download_name);
Con_DPrintf("Download of %s by %s has finished\n", host_client->download_name, host_client->name);
FS_Close(host_client->download_file);
host_client->download_file = NULL;
host_client->download_name[0] = 0;
host_client->download_expectedposition = 0;
host_client->download_started = false;
}
}
else
{
// a data block was lost, reset to the expected position
// and resume sending from there
FS_Seek(host_client->download_file, host_client->download_expectedposition, SEEK_SET);
}
}
break;
case clc_ackframe:
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
num = MSG_ReadLong(&sv_message);
if (sv_message.badread) Con_Printf("SV_ReadClientMessage: badread at %s:%i\n", __FILE__, __LINE__);
if (developer_networkentities.integer >= 10)
Con_Printf("recv clc_ackframe %i\n", num);
// if the client hasn't progressed through signons yet,
// ignore any clc_ackframes we get (they're probably from the
// previous level)
if (host_client->begun && host_client->latestframenum < num)
{
int i;
for (i = host_client->latestframenum + 1;i < num;i++)
SV_FrameLost(i);
SV_FrameAck(num);
host_client->latestframenum = num;
}
break;
}
}
}
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