Port Anticamper from zCatch

src/engine/shared/variables_insta.h

@@ -33,6 +33,10 @@ MACRO_CONFIG_INT(SvDamageNeededForKill, sv_damage_needed_for_kill, 4, 0, 5, CFGF
 MACRO_CONFIG_INT(SvAllowZoom, sv_allow_zoom, 0, 0, 1, CFGFLAG_SERVER, "allow ddnet clients to use the client side zoom feature")
 MACRO_CONFIG_STR(SvSpawnWeapons, sv_spawn_weapons, 900, "grenade", CFGFLAG_SERVER, "possible values: grenade, laser")
 MACRO_CONFIG_INT(SvPlasmaKills, sv_plasma_kills, 0, 0, 1, CFGFLAG_SERVER | CFGFLAG_GAME, "Plasma turret kills player")
+MACRO_CONFIG_INT(SvAnticamper, sv_anticamper, 1, 0, 1, CFGFLAG_SERVER, "Toggle to enable/disable Anticamper")
+MACRO_CONFIG_INT(SvAnticamperFreeze, sv_anticamper_freeze, 7, 0, 15, CFGFLAG_SERVER, "If a player should freeze on camping (and how long) or die")
+MACRO_CONFIG_INT(SvAnticamperTime, sv_anticamper_time, 10, 5, 120, CFGFLAG_SERVER, "How long to wait till the player dies/freezes")
+MACRO_CONFIG_INT(SvAnticamperRange, sv_anticamper_range, 200, 0, 1000, CFGFLAG_SERVER, "Distance how far away the player must move to escape anticamper")
 /*
 
 sv_chat_ratelimit_long_messages

src/game/server/entities/character.cpp

@@ -997,6 +997,11 @@ bool CCharacter::IncreaseArmor(int Amount)
 
 void CCharacter::Die(int Killer, int Weapon, bool SendKillMsg)
 {
+
+	//Anticamper: Reset counter on death
+	m_pPlayer->m_CampTick = -1;
+	m_pPlayer->m_SentCampMsg = false;
+
 	if(Server()->IsRecording(m_pPlayer->GetCid()))
 	{
 		CPlayerData *pData = GameServer()->Score()->PlayerData(m_pPlayer->GetCid());
@@ -2259,6 +2264,10 @@ bool CCharacter::Freeze(int Seconds)
 		m_Armor = 0;
 		m_FreezeTime = Seconds * Server()->TickSpeed();
 		m_Core.m_FreezeStart = Server()->Tick();
+
+		//Reset anticamper
+		m_pPlayer->m_CampTick = -1;
+		m_pPlayer->m_SentCampMsg = false;
 		return true;
 	}
 	return false;

src/game/server/entities/character.h

@@ -268,6 +268,7 @@ class CCharacter : public CEntity
 		useful for votes
 	*/
 	void ResetInstaSettings();
+	bool IsDeepFrozen() { return m_Core.m_DeepFrozen; } //Needed for Anticamper
 	bool m_IsGodmode;
 };
 

src/game/server/player.cpp

@@ -183,6 +183,9 @@ void CPlayer::Tick()
 
 	if(m_ChatScore > 0)
 		m_ChatScore--;
+
+	if(g_Config.m_SvAnticamper && m_pCharacter && !GameServer()->m_World.m_Paused) //call anticamper
+		Anticamper();
 
 	Server()->SetClientScore(m_ClientId, m_Score);
 
@@ -989,3 +992,51 @@ void CPlayer::ProcessScoreResult(CScorePlayerResult &Result)
 		}
 	}
 }
+
+int CPlayer::Anticamper()
+{
+
+	//Dont do anticamper if player is already frozen
+	if(m_pCharacter->m_FreezeTime > 0 || m_pCharacter->IsDeepFrozen())
+		return 0;
+
+	int AnticamperTime = g_Config.m_SvAnticamperTime;
+	int AnticamperRange = g_Config.m_SvAnticamperRange;
+
+	if(m_CampTick == -1)
+	{
+		m_CampPos = m_pCharacter->m_Pos;
+		m_CampTick = Server()->Tick() + Server()->TickSpeed()*AnticamperTime;
+	}
+
+	// Check if the player is moving
+	if((m_CampPos.x - m_pCharacter->m_Pos.x >= (float)AnticamperRange || m_CampPos.x - m_pCharacter->m_Pos.x <= -(float)AnticamperRange)
+	|| (m_CampPos.y - m_pCharacter->m_Pos.y >= (float)AnticamperRange || m_CampPos.y - m_pCharacter->m_Pos.y <= -(float)AnticamperRange))
+		{
+			m_CampTick = -1;
+		}
+
+	// Send warning to the player
+	if(m_CampTick <= Server()->Tick() + Server()->TickSpeed() * AnticamperTime/2 && m_CampTick != -1 && !m_SentCampMsg)
+	{
+		GameServer()->SendBroadcast("ANTICAMPER: Move or die", m_ClientId);
+		m_SentCampMsg = true;
+	}
+
+	// Kill him
+	if((m_CampTick <= Server()->Tick()) && (m_CampTick > 0))
+	{
+		if(g_Config.m_SvAnticamperFreeze)
+		{
+			m_pCharacter->Freeze(g_Config.m_SvAnticamperFreeze);
+			GameServer()->CreateSound(m_pCharacter->m_Pos, SOUND_PLAYER_PAIN_LONG);
+			return 2;
+		}
+		else
+		{
+			m_pCharacter->Die(m_ClientId, WEAPON_WORLD);
+			return 1;
+		}
+	}
+	return 0;
+}

src/game/server/player.h

@@ -129,6 +129,12 @@ class CPlayer
 		int m_Min;
 		int m_Max;
 	} m_Latency;
+
+	//Anticamper
+	int Anticamper();
+	bool m_SentCampMsg;
+	int m_CampTick;
+	vec2 m_CampPos;
 
 private:
 	const uint32_t m_UniqueClientId;