SOCD detection

include/progs.h

@@ -944,6 +944,19 @@ typedef struct gedict_s
 	float fIllegalFPSWarnings;
 // ILLEGALFPS]
 
+// SOCD detectioin
+	float fStrafeChangeCount;
+	float fFramePerfectStrafeChangeCount;
+	int   socdDetected;
+	int   socdChecksCount;
+	float fLastSideMoveSpeed;
+	int   matchStrafeChangeCount;
+	int   matchPerfectStrafeCount;
+	int   totalStrafeChangeCount;
+	int   totalPerfectStrafeCount;
+	int   nullStrafeCount;
+// SOCD
+
 	float shownick_time;					// used to force centerprint is off at desired time
 	clientType_t ct;						// client type for client edicts
 // { timing

src/client.c

@@ -1658,6 +1658,18 @@ void ClientConnect()
 		SendIntermissionToClient();
 	}
 
+// SOCD
+	self->socdChecksCount = 0;
+	self->socdDetected = 0;
+	self->fStrafeChangeCount = 0;
+	self->fFramePerfectStrafeChangeCount = 0;
+	self->fLastSideMoveSpeed = 0;
+	self->matchStrafeChangeCount = 0;
+	self->matchPerfectStrafeCount = 0;
+	self->totalStrafeChangeCount = 0;
+	self->totalPerfectStrafeCount = 0;
+	self->nullStrafeCount = 0;
+
 // ILLEGALFPS[
 
 	// Zibbo's frametime checking code
@@ -3520,6 +3532,58 @@ void PlayerPreThink()
 	}
 #endif
 
+// SOCD detection
+	{
+		float fSideMoveSpeed = self->movement[1];
+
+		if ((fSideMoveSpeed != 0) && (((fSideMoveSpeed > 0) - (fSideMoveSpeed < 0)) != ((self->fLastSideMoveSpeed > 0) - (self->fLastSideMoveSpeed < 0))) && (self->nullStrafeCount < 4)) //strafechange
+		{
+			self->fStrafeChangeCount += 1;
+			self->totalStrafeChangeCount += 1;
+			if (match_in_progress)
+				self->matchStrafeChangeCount += 1;
+
+			if ((fSideMoveSpeed != 0) && (self->fLastSideMoveSpeed != 0))
+			{
+				self->fFramePerfectStrafeChangeCount += 1;
+				self->totalPerfectStrafeCount += 1;
+				if (match_in_progress)
+					self->matchPerfectStrafeCount += 1;
+			}
+
+			self->nullStrafeCount = 0;
+		}
+		else
+		{
+			if (0 == fSideMoveSpeed)
+				self->nullStrafeCount += 1;
+			else
+				self->nullStrafeCount = 0;
+		}
+
+		self->fLastSideMoveSpeed = fSideMoveSpeed;
+
+		if (self->fStrafeChangeCount >= 25)
+		{
+			if (self->fFramePerfectStrafeChangeCount / self->fStrafeChangeCount >= 0.75)
+			{
+				int k_allow_socd_warning = cvar("k_allow_socd_warning");
+
+				self->socdDetected += 1;
+				if ((!match_in_progress) && (!self->isBot) && k_allow_socd_warning && (self->ct == ctPlayer))
+				{
+					G_bprint(PRINT_HIGH,
+						"Warning! %s: Movement assistance detected. Please disable iDrive or keyboard strafe assistance features.\n",
+						self->netname);
+				}
+			}
+
+			self->socdChecksCount += 1;
+			self->fStrafeChangeCount = 0;
+			self->fFramePerfectStrafeChangeCount = 0;
+		}
+	}
+
 // ILLEGALFPS[
 
 	self->fAverageFrameTime += g_globalvars.frametime;

src/commands.c

@@ -1875,12 +1875,12 @@
 		G_sprint(self, 2, "%s in progress\n", redtext("Team picking"));
 	}
 
 	if (floor(k_captains) == 1)
 	{
 		G_sprint(self, 2, "\2201\221 %s present\n", redtext("captain"));
 	}
 
 	if (floor(k_coaches) == 1)
 	{
 		G_sprint(self, 2, "\2201\221 %s present\n", redtext("coach"));
 	}
@@ -8089,6 +8089,7 @@
 {
 	char arg_x[1024];
 	int i;
+	gedict_t* p;
 
 	if (match_in_progress)
 	{
@@ -8114,16 +8115,41 @@
 
 	if (!is_real_adm(self))
 	{
-		if (strneq(arg_x, "f_version") && strneq(arg_x, "f_modified") && strneq(arg_x, "f_server"))
+		if (strneq(arg_x, "f_version") && strneq(arg_x, "f_modified") && strneq(arg_x, "f_server") && strneq(arg_x, "f_movement"))
 		{
 			G_sprint(self, 2, "You are not allowed to check \020%s\021\n"
-						"available checks are: f_version, f_modified and f_server\n",
+						"available checks are: f_version, f_modified, f_server and f_movement\n",
 						arg_x);
 
 			return;
 		}
 	}
 
+	if (streq(arg_x, "f_movement"))
+	{
+		G_bprint(2, "%s is checking \020%s\021\n", self->netname, arg_x);
+
+		for (p = world; (p = find_client(p));)
+		{
+			if ((p->ct == ctPlayer) && (!p->isBot))
+			{
+				if (p->socdDetected > 0)
+				{
+					G_bprint(2, "%s: %s:%.1f%% (%d/%d). SOCD movement assistance detected!\n", p->netname, redtext("Perfect strafes"),
+						p->totalStrafeChangeCount > 0 ? 100.0 * p->totalPerfectStrafeCount / p->totalStrafeChangeCount : 0.0,
+						p->totalPerfectStrafeCount, p->totalStrafeChangeCount);
+				}
+				else
+				{
+					G_bprint(2, "%s: %s:%.1f%% (%d/%d)\n", p->netname, redtext("Perfect strafes"),
+						p->totalStrafeChangeCount > 0 ? 100.0 * p->totalPerfectStrafeCount / p->totalStrafeChangeCount : 0.0,
+						p->totalPerfectStrafeCount, p->totalStrafeChangeCount);
+				}
+			}
+		}
+		return;
+	}
+
 	for (i = 1; i <= MAX_CLIENTS; i++)
 	{
 		if (g_edicts[i].f_checkbuf)

src/stats.c

@@ -763,6 +763,16 @@ void OnePlayerStats(gedict_t *p, int tp)
 					p->ps.vel_frames > 0 ? p->ps.velocity_sum / p->ps.vel_frames : 0.);
 	}
 
+	// movement
+	if (!p->isBot)
+	{
+		G_bprint(2, "%s: %s:%.1f%% (%d/%d) %s:%d/%d\n", redtext("Movement"), redtext("Perfect strafes"),
+			p->matchStrafeChangeCount > 0 ? 100.0 * p->matchPerfectStrafeCount / p->matchStrafeChangeCount : 0.0,
+			p->matchPerfectStrafeCount, p->matchStrafeChangeCount, redtext("SOCD detections"),
+			p->socdDetected, p->socdChecksCount);
+	}
+
+
 	// armors + megahealths
 	if (!lgc_enabled())
 	{

src/world.c

@@ -53,10 +53,10 @@
 	{
 		bodyque[i] = spawn();
 		bodyque[i]->classname = "bodyque";
 		bodyque[i - 1]->s.v.owner = EDICT_TO_PROG(bodyque[i]);
 	}
 
 	bodyque[MAX_BODYQUE - 1]->s.v.owner = EDICT_TO_PROG(bodyque[0]);
 	bodyque_head = 0;
 }
 
@@ -144,7 +144,7 @@
 	e = spawn();
 
 	e->classname = "mapguard";
 	e->s.v.owner = EDICT_TO_PROG(world);
 	e->think = (func_t) CheckDefMap;
 	e->s.v.nextthink = g_globalvars.time + max(0.0001, timeout);
 }
@@ -582,7 +582,7 @@
 
 		self = spawn();
 		setorigin(self, -912.6f, -898.9f, 248.0f); // oh, ktpro like
 		self->s.v.owner = EDICT_TO_PROG(world);
 		SP_item_artifact_super_damage();
 
 		self = swp; // restore self
@@ -1000,6 +1000,8 @@
 
 	RegisterCvar("k_teamoverlay"); // q3 like team overlay
 
+	RegisterCvar("k_allow_socd_warning"); // socd
+
 // { SP
 	RegisterCvarEx("k_monster_spawn_time", "20");
 // }