+.float anticheat_jointime;
+
void mean_accumulate(entity e, .float a, .float c, float mean, float value, float weight)
{
if(weight == 0)
#define MEAN_EVALUATE(prefix) mean_evaluate(self,prefix##_accumulator,prefix##_count,prefix##_mean)
#define MEAN_DECLARE(prefix,m) float prefix##_mean = m; .float prefix##_count, prefix##_accumulator
+.float anticheat_fixangle_endtime;
+
float anticheat_div0_evade_evasion_delta;
.float anticheat_div0_evade_offset;
.vector anticheat_div0_evade_v_angle;
.vector anticheat_div0_strafebot_forward_prev;
MEAN_DECLARE(anticheat_div0_strafebot_new, 5);
+// Snap-aim detection: we track the average angular speed of aiming over time, in "radians per second".
+// Signal: a high-power mean. Cheaters will have high "signal" here.
+// Noise: a low-power mean. Active/shivery players will have high "noise" here.
+// Note one can always artificially add noise - so very high values of both signal and noise need to be checked too.
+MEAN_DECLARE(anticheat_idle_snapaim_signal, 5);
+MEAN_DECLARE(anticheat_idle_snapaim_noise, 1);
+
+// TEMP DEBUG STUFF.
+MEAN_DECLARE(anticheat_idle_snapaim_m2, 2);
+MEAN_DECLARE(anticheat_idle_snapaim_m3, 3);
+MEAN_DECLARE(anticheat_idle_snapaim_m4, 4);
+MEAN_DECLARE(anticheat_idle_snapaim_m7, 7);
+MEAN_DECLARE(anticheat_idle_snapaim_m10, 10);
+
.float anticheat_speedhack_offset;
.float anticheat_speedhack_movetime, anticheat_speedhack_movetime_count, anticheat_speedhack_movetime_frac;
MEAN_DECLARE(anticheat_speedhack, 5);
+.float anticheat_speedhack_accu;
+.float anticheat_speedhack_lasttime;
+MEAN_DECLARE(anticheat_speedhack_m1, 1);
+MEAN_DECLARE(anticheat_speedhack_m2, 2);
+MEAN_DECLARE(anticheat_speedhack_m3, 3);
+MEAN_DECLARE(anticheat_speedhack_m4, 4);
+MEAN_DECLARE(anticheat_speedhack_m5, 5);
+
float movement_oddity(vector m0, vector m1)
{
float cosangle = normalize(m0) * normalize(m1);
void anticheat_physics()
{
- float f, wishspeed;
- vector wishvel;
+ float f;
// div0_evade -> SPECTATORS
makevectors(self.v_angle);
if(self.anticheat_div0_evade_offset == 0)
{
f = fabs(anticheat_div0_evade_evasion_delta - floor(anticheat_div0_evade_evasion_delta) - 0.5) * 2; // triangle function
- self.anticheat_div0_evade_offset = time + sys_frametime * (3 * f - 1);
+ self.anticheat_div0_evade_offset = servertime + sys_frametime * (3 * f - 1);
self.anticheat_div0_evade_v_angle = self.v_angle;
self.anticheat_div0_evade_forward_initial = v_forward;
MEAN_ACCUMULATE(anticheat_div0_evade, 0, 1);
{
if(time < self.anticheat_div0_evade_offset)
self.anticheat_div0_evade_v_angle = self.v_angle;
- MEAN_ACCUMULATE(anticheat_div0_evade, 1 - (self.anticheat_div0_evade_forward_initial * v_forward), 1);
+ MEAN_ACCUMULATE(anticheat_div0_evade, 0.5 - 0.5 * (self.anticheat_div0_evade_forward_initial * v_forward), 1);
}
- MEAN_ACCUMULATE(anticheat_div0_strafebot_old, movement_oddity(self.movement, self.anticheat_div0_strafebot_movement_prev), max(0, sys_frametime - frametime));
+ MEAN_ACCUMULATE(anticheat_div0_strafebot_old, movement_oddity(self.movement, self.anticheat_div0_strafebot_movement_prev), 1);
self.anticheat_div0_strafebot_movement_prev = self.movement;
- if(vlen(self.anticheat_div0_strafebot_forward_prev))
- MEAN_ACCUMULATE(anticheat_div0_strafebot_new, 1 - (self.anticheat_div0_strafebot_forward_prev * v_forward), max(0, sys_frametime - frametime));
+ // Note: this actually tries to detect snap-aim.
+ if(vlen(self.anticheat_div0_strafebot_forward_prev) && time > self.anticheat_fixangle_endtime) {
+ float cosangle = self.anticheat_div0_strafebot_forward_prev * v_forward;
+ float angle = cosangle < -1 ? M_PI : cosangle > 1 ? 0 : acos(cosangle);
+ /*
+ if (angle >= 10 * M_PI / 180)
+ printf("SNAP %s: %f for %f, %f since fixangle\n", self.netname, angle * 180 / M_PI, cosangle, time - self.anticheat_fixangle_endtime);
+ */
+ MEAN_ACCUMULATE(anticheat_div0_strafebot_new, angle / M_PI, 1);
+
+ if (autocvar_slowmo > 0) {
+ // Technically this is a NOP, as the engine should be ensuring
+ // this in the first place. Let's guard against dividing by
+ // zero anyway.
+ float dt = max(0.001, frametime) / autocvar_slowmo;
+
+ float anglespeed = angle / dt;
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_signal, anglespeed, dt);
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_noise, anglespeed, dt);
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_m2, anglespeed, dt);
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_m3, anglespeed, dt);
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_m4, anglespeed, dt);
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_m7, anglespeed, dt);
+ MEAN_ACCUMULATE(anticheat_idle_snapaim_m10, anglespeed, dt);
+ }
+ }
self.anticheat_div0_strafebot_forward_prev = v_forward;
// generic speedhack detection: correlate anticheat_speedhack_movetime (UPDATED BEFORE THIS) and server time
self.anticheat_speedhack_offset = f;
else
{
- MEAN_ACCUMULATE(anticheat_speedhack, fabs(f - self.anticheat_speedhack_offset), 1);
+ MEAN_ACCUMULATE(anticheat_speedhack, max(0, f - self.anticheat_speedhack_offset), 1);
self.anticheat_speedhack_offset += (f - self.anticheat_speedhack_offset) * frametime * 0.1;
}
- // race/CTS: force kbd movement for fairness
- if(g_race || g_cts)
- {
- // if record times matter
- // ensure nothing EVIL is being done (i.e. div0_evade)
- // this hinders joystick users though
- // but it still gives SOME analog control
- wishvel_x = fabs(self.movement_x);
- wishvel_y = fabs(self.movement_y);
- if(wishvel_x != 0 && wishvel_y != 0 && wishvel_x != wishvel_y)
- {
- wishvel_z = 0;
- wishspeed = vlen(wishvel);
- if(wishvel_x >= 2 * wishvel_y)
- {
- // pure X motion
- if(self.movement_x > 0)
- self.movement_x = wishspeed;
- else
- self.movement_x = -wishspeed;
- self.movement_y = 0;
- }
- else if(wishvel_y >= 2 * wishvel_x)
- {
- // pure Y motion
- self.movement_x = 0;
- if(self.movement_y > 0)
- self.movement_y = wishspeed;
- else
- self.movement_y = -wishspeed;
- }
- else
- {
- // diagonal
- if(self.movement_x > 0)
- self.movement_x = M_SQRT1_2 * wishspeed;
- else
- self.movement_x = -M_SQRT1_2 * wishspeed;
- if(self.movement_y > 0)
- self.movement_y = M_SQRT1_2 * wishspeed;
- else
- self.movement_y = -M_SQRT1_2 * wishspeed;
- }
- }
+ // new generic speedhack detection
+ if (self.anticheat_speedhack_lasttime > 0) {
+ float dt = servertime - self.anticheat_speedhack_lasttime;
+ const float falloff = 0.2;
+ self.anticheat_speedhack_accu *= exp(-dt * falloff);
+ self.anticheat_speedhack_accu += frametime * falloff;
+ // NOTE: at cl_netfps x, this actually averages not to 1, but to 1/x * falloff / (1 - exp(-1/x * falloff))
+ // For 15 netfps (absolute minimum bearable), and 0.2 falloff, this is: 1.0067
+ self.anticheat_speedhack_lasttime = servertime;
+ MEAN_ACCUMULATE(anticheat_speedhack_m1, self.anticheat_speedhack_accu, frametime);
+ MEAN_ACCUMULATE(anticheat_speedhack_m2, self.anticheat_speedhack_accu, frametime);
+ MEAN_ACCUMULATE(anticheat_speedhack_m3, self.anticheat_speedhack_accu, frametime);
+ MEAN_ACCUMULATE(anticheat_speedhack_m4, self.anticheat_speedhack_accu, frametime);
+ MEAN_ACCUMULATE(anticheat_speedhack_m5, self.anticheat_speedhack_accu, frametime);
+ } else {
+ self.anticheat_speedhack_accu = 1;
+ self.anticheat_speedhack_lasttime = servertime;
}
}
self.anticheat_div0_evade_offset = 0;
}
+string anticheat_display(float f, float tmin, float mi, float ma)
+{
+ string s;
+ s = ftos(f);
+ if(f <= mi)
+ return strcat(s, ":N");
+ if(f >= ma)
+ return strcat(s, ":Y");
+ return strcat(s, ":-");
+}
+
void anticheat_report()
{
- if(!cvar("sv_eventlog"))
+ if(!autocvar_sv_eventlog)
return;
- GameLogEcho(strcat(":anticheat:speedhack:", ftos(self.playerid), ":", ftos(MEAN_EVALUATE(anticheat_speedhack))));
- GameLogEcho(strcat(":anticheat:div0_strafebot_old:", ftos(self.playerid), ":", ftos(MEAN_EVALUATE(anticheat_div0_strafebot_old))));
- GameLogEcho(strcat(":anticheat:div0_strafebot_new:", ftos(self.playerid), ":", ftos(MEAN_EVALUATE(anticheat_div0_strafebot_new))));
- GameLogEcho(strcat(":anticheat:div0_evade:", ftos(self.playerid), ":", ftos(MEAN_EVALUATE(anticheat_div0_evade))));
+ // TODO(divVerent): Use xonstat to acquire good thresholds.
+ GameLogEcho(strcat(":anticheat:_time:", ftos(self.playerid), ":", ftos(servertime - self.anticheat_jointime)));
+ GameLogEcho(strcat(":anticheat:speedhack:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack), 240, 0, 9999))); // Actually this one seems broken.
+ GameLogEcho(strcat(":anticheat:speedhack_m1:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m1), 240, 1.01, 1.25)));
+ GameLogEcho(strcat(":anticheat:speedhack_m2:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m2), 240, 1.01, 1.25)));
+ GameLogEcho(strcat(":anticheat:speedhack_m3:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m3), 240, 1.01, 1.25)));
+ GameLogEcho(strcat(":anticheat:speedhack_m4:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m4), 240, 1.01, 1.25)));
+ GameLogEcho(strcat(":anticheat:speedhack_m5:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_speedhack_m5), 240, 1.01, 1.25)));
+ GameLogEcho(strcat(":anticheat:div0_strafebot_old:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_strafebot_old), 120, 0.15, 0.4)));
+ GameLogEcho(strcat(":anticheat:div0_strafebot_new:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_strafebot_new), 120, 0.25, 0.8)));
+ GameLogEcho(strcat(":anticheat:div0_evade:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_div0_evade), 120, 0.2, 0.5)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_signal) - MEAN_EVALUATE(anticheat_idle_snapaim_noise), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_signal:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_signal), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_noise:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_noise), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_m2:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m2), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_m3:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m3), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_m4:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m4), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_m7:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m7), 120, 0, 9999)));
+ GameLogEcho(strcat(":anticheat:idle_snapaim_m10:", ftos(self.playerid), ":", anticheat_display(MEAN_EVALUATE(anticheat_idle_snapaim_m10), 120, 0, 9999)));
+}
+
+float anticheat_getvalue(string id)
+{
+ switch(id) {
+ case "_time": return servertime - self.anticheat_jointime;
+ case "speedhack": return MEAN_EVALUATE(anticheat_speedhack);
+ case "speedhack_m1": return MEAN_EVALUATE(anticheat_speedhack_m1);
+ case "speedhack_m2": return MEAN_EVALUATE(anticheat_speedhack_m2);
+ case "speedhack_m3": return MEAN_EVALUATE(anticheat_speedhack_m3);
+ case "speedhack_m4": return MEAN_EVALUATE(anticheat_speedhack_m4);
+ case "speedhack_m5": return MEAN_EVALUATE(anticheat_speedhack_m5);
+ case "div0_strafebot_old": return MEAN_EVALUATE(anticheat_div0_strafebot_old);
+ case "div0_strafebot_new": return MEAN_EVALUATE(anticheat_div0_strafebot_new);
+ case "div0_evade": return MEAN_EVALUATE(anticheat_div0_evade);
+ case "idle_snapaim": return MEAN_EVALUATE(anticheat_idle_snapaim_signal) - MEAN_EVALUATE(anticheat_idle_snapaim_noise);
+ case "idle_snapaim_signal": return MEAN_EVALUATE(anticheat_idle_snapaim_signal);
+ case "idle_snapaim_noise": return MEAN_EVALUATE(anticheat_idle_snapaim_noise);
+ case "idle_snapaim_m2": return MEAN_EVALUATE(anticheat_idle_snapaim_m2);
+ case "idle_snapaim_m3": return MEAN_EVALUATE(anticheat_idle_snapaim_m3);
+ case "idle_snapaim_m4": return MEAN_EVALUATE(anticheat_idle_snapaim_m4);
+ case "idle_snapaim_m7": return MEAN_EVALUATE(anticheat_idle_snapaim_m7);
+ case "idle_snapaim_m10": return MEAN_EVALUATE(anticheat_idle_snapaim_m10);
+ }
+ return -1;
+}
+
+void anticheat_startframe()
+{
+ anticheat_div0_evade_evasion_delta += frametime * (0.5 + random());
+}
+
+void anticheat_fixangle()
+{
+ self.anticheat_fixangle_endtime = servertime + ANTILAG_LATENCY(self) + 0.2;
}
-void anticheat_serverframe()
+void anticheat_endframe()
{
+ entity oldself = self;
+ FOR_EACH_CLIENT(self)
+ if (self.fixangle)
+ anticheat_fixangle();
+ self = oldself;
anticheat_div0_evade_evasion_delta += frametime * (0.5 + random());
}
void anticheat_init()
{
self.anticheat_speedhack_offset = 0;
+ self.anticheat_jointime = servertime;
}
void anticheat_shutdown()
projects / xonotic / xonotic-data.pk3dir.git / blobdiff