Initial implementation of nano powers.

src/NanoManager.cpp

@@ -2,6 +2,8 @@
 #include "CNStructs.hpp"
 #include "NanoManager.hpp"
 #include "PlayerManager.hpp"
+#include "NPCManager.hpp"
+#include "CombatManager.hpp"
 
 void NanoManager::init() {
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_NANO_ACTIVE, nanoSummonHandler);
@@ -11,6 +13,7 @@ void NanoManager::init() {
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_NANO_TUNE, nanoSkillSetHandler);
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_GIVE_NANO_SKILL, nanoSkillSetGMHandler);
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_NANO_SKILL_USE, nanoSkillUseHandler);
+    REGISTER_SHARD_PACKET(P_CL2FE_REQ_WARP_USE_RECALL, nanoRecallHandler);
 }
 
 void NanoManager::nanoEquipHandler(CNSocket* sock, CNPacketData* data) {
@@ -94,23 +97,31 @@ void NanoManager::nanoSummonHandler(CNSocket* sock, CNPacketData* data) {
 }
 
 void NanoManager::nanoSkillUseHandler(CNSocket* sock, CNPacketData* data) {
-    if (data->size != sizeof(sP_CL2FE_REQ_NANO_SKILL_USE))
+    //if (data->size != sizeof(sP_CL2FE_REQ_NANO_SKILL_USE))
-        return; // malformed packet
+    //    return; // malformed packet
     
-    sP_CL2FE_REQ_NANO_SKILL_USE* skill = (sP_CL2FE_REQ_NANO_SKILL_USE*)data->buf;
     Player *plr = PlayerManager::getPlayer(sock);
+    int16_t nanoId = plr->activeNano;
+    int16_t skillId = plr->Nanos[nanoId].iSkillID;
     
-    // Send to client
+    if (skillId == 1 || skillId == 13 || skillId == 42 || skillId == 59 || skillId == 78 || skillId == 103)
-    INITSTRUCT(sP_FE2CL_NANO_SKILL_USE_SUCC, resp);
+        nanoDebuff(sock, data, nanoId, skillId, 8, 512); // Stun
-    resp.iArg1 = skill->iArg1;
+    else if (skillId == 2 || skillId == 7 || skillId == 12 || skillId == 38 || skillId == 53 || skillId == 61 || skillId == 82 || skillId == 92 ||  skillId == 98 )
-    resp.iArg2 = skill->iArg2;
+        nanoHeal(sock, data, nanoId, skillId, 333); // Heal
-    resp.iArg3 = skill->iArg3;
+    else if (skillId == 5 || skillId == 25 || skillId == 66 || skillId == 69 || skillId == 75 || skillId == 87) {
-    resp.iBulletID = skill->iBulletID;
+        // Recall
-    resp.iTargetCnt = skill->iTargetCnt;
+    } else if (skillId == 10 || skillId == 34 || skillId == 37 || skillId == 56 || skillId == 93 || skillId == 97)
-    resp.iPC_ID = plr->iID;
+        nanoDebuff(sock, data, nanoId, skillId, 3, 262144); // Drain
-    resp.iNanoStamina = 150; // Hardcoded for now
+    else if (skillId == 17 || skillId == 18 || skillId == 27 || skillId == 41 || skillId == 43 || skillId == 47 || skillId == 90 || skillId == 96 || skillId == 106)
-
+        nanoDebuff(sock, data, nanoId, skillId, 5, 128); // Snare
-    sock->sendPacket((void*)&resp, P_FE2CL_NANO_SKILL_USE_SUCC, sizeof(sP_FE2CL_NANO_SKILL_USE_SUCC));
+    else if (skillId == 19 || skillId == 21 || skillId == 33 || skillId == 45 || skillId == 46 || skillId == 52 || skillId == 101 || skillId == 105 || skillId == 108)
+        nanoDamage(sock, data, nanoId, skillId, 133); // Damage
+    else if (skillId == 20 || skillId == 63 || skillId == 91) {
+        // Group Revive
+    } else if (skillId == 24 || skillId == 51 || skillId == 89) {
+        nanoLeech(sock, data, nanoId, skillId, 133); // Leech
+    } else if (skillId == 28 || skillId == 30 || skillId == 32 || skillId == 49 || skillId == 70 || skillId == 71 || skillId == 81 || skillId == 85 || skillId == 94)
+        nanoDebuff(sock, data, nanoId, skillId, 4, 1024); // Sleep
 
     DEBUGLOG(
         std::cout << U16toU8(plr->PCStyle.szFirstName) << U16toU8(plr->PCStyle.szLastName) << " requested to summon nano skill " << std::endl;
@@ -133,6 +144,16 @@ void NanoManager::nanoSkillSetGMHandler(CNSocket* sock, CNPacketData* data) {
     setNanoSkill(sock, skillGM->iNanoID, skillGM->iTuneID);
 }
 
+void NanoManager::nanoRecallHandler(CNSocket* sock, CNPacketData* data) {
+    if (data->size != sizeof(sP_CL2FE_REQ_WARP_USE_RECALL))
+        return;
+    
+    INITSTRUCT(sP_FE2CL_REP_WARP_USE_RECALL_FAIL, resp);
+
+    sock->sendPacket((void*)&resp, P_FE2CL_REP_WARP_USE_RECALL_FAIL, sizeof(sP_FE2CL_REP_WARP_USE_RECALL_FAIL));
+    // stubbed for now
+}
+
 #pragma region Helper methods
 void NanoManager::addNano(CNSocket* sock, int16_t nanoId, int16_t slot) {
     if (nanoId > 36)
@@ -175,7 +196,6 @@ void NanoManager::addNano(CNSocket* sock, int16_t nanoId, int16_t slot) {
 void NanoManager::summonNano(CNSocket *sock, int slot) {
     INITSTRUCT(sP_FE2CL_REP_NANO_ACTIVE_SUCC, resp);
     resp.iActiveNanoSlotNum = slot;
-    sock->sendPacket((void*)&resp, P_FE2CL_REP_NANO_ACTIVE_SUCC, sizeof(sP_FE2CL_REP_NANO_ACTIVE_SUCC));
     Player *plr = PlayerManager::getPlayer(sock);
 
     if (slot > 2 || slot < -1)
@@ -186,6 +206,80 @@ void NanoManager::summonNano(CNSocket *sock, int slot) {
     if (nanoId > 36 || nanoId < -1)
         return; // sanity check
     
+    int16_t skillId = 0;
+    
+    if (plr->activeNano > 0) {
+        skillId = plr->Nanos[plr->activeNano].iSkillID;
+        if (skillId == 3 || skillId == 50 || skillId == 99)
+            nanoUnbuff(sock, 16384, 15); // Scavenge
+        else if (skillId == 4 || skillId == 8 || skillId == 62 || skillId == 68 || skillId == 73 || skillId == 86)
+            nanoUnbuff(sock, 1, 1, 200); // Run
+        else if (skillId == 6 || skillId == 54 || skillId == 104)
+            nanoUnbuff(sock, 32768, 16); // Bonus
+        else if (skillId == 9 || skillId == 57 || skillId == 76)
+            nanoUnbuff(sock, 32, 6); // Guard
+        else if (skillId == 11 || skillId == 67 || skillId == 95)
+            nanoUnbuff(sock, 4096, 13); // Radar
+        else if (skillId == 14 || skillId == 58 || skillId == 102)
+            nanoUnbuff(sock, 64, 7); // Antidote
+        else if (skillId == 15 || skillId == 31 || skillId == 39 || skillId == 55 || skillId == 77 || skillId == 107)
+            nanoUnbuff(sock, 131072, 18); // Freedom
+        else if (skillId == 16 || skillId == 35 || skillId == 44 || skillId == 60 || skillId == 88 || skillId == 100)
+            nanoUnbuff(sock, 4, 3, 400); // Jump
+        else if (skillId == 22 || skillId == 48 || skillId == 83)
+            nanoUnbuff(sock, 16, 5); // Self Revive
+        else if (skillId == 23 || skillId == 29 || skillId == 65 || skillId == 72 || skillId == 80 || skillId == 82)
+            nanoUnbuff(sock, 8, 4); // Sneak
+        else if (skillId == 26 || skillId == 40 || skillId == 74)
+            nanoUnbuff(sock, 8192, 14); // Treasure Finder
+    }
+
+    sNano nano = plr->Nanos[nanoId];
+    skillId = nano.iSkillID;
+    
+    if (slot > -1) {
+        plr->activeNano = nanoId;
+        
+        if (skillId == 3 || skillId == 50 || skillId == 99) {
+            nanoBuff(sock, nanoId, skillId, 19, 16384, 15); // Scavenge
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 4 || skillId == 8 || skillId == 62 || skillId == 68 || skillId == 73 || skillId == 86) {
+            nanoBuff(sock, nanoId, skillId, 11, 1, 1, 200); // Run
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 6 || skillId == 54 || skillId == 104) {
+            nanoBuff(sock, nanoId, skillId, 20, 32768, 16); // Bonus
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 9 || skillId == 57 || skillId == 76) {
+            nanoBuff(sock, nanoId, skillId, 17, 32, 6); // Guard
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 11 || skillId == 67 || skillId == 95) {
+            nanoBuff(sock, nanoId, skillId, 14, 4096, 13); // Radar
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 14 || skillId == 58 || skillId == 102) {
+            nanoBuff(sock, nanoId, skillId, 18, 64, 7); // Antidote
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 15 || skillId == 31 || skillId == 39 || skillId == 55 || skillId == 77 || skillId == 107) {
+            nanoBuff(sock, nanoId, skillId, 25, 131072, 18); // Freedom
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 16 || skillId == 35 || skillId == 44) {
+            nanoBuff(sock, nanoId, skillId, 10, 4, 3, 400); // Jump
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 22 || skillId == 48 || skillId == 83) {
+            nanoBuff(sock, nanoId, skillId, 16, 16, 5); // Self Revive
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 23 || skillId == 29 || skillId == 65 || skillId == 72 || skillId == 80 || skillId == 82) {
+            nanoBuff(sock, nanoId, skillId, 12, 8, 4); // Sneak
+            resp.eCSTB___Add = 1;
+        } else if (skillId == 26 || skillId == 40 || skillId == 74) {
+            nanoBuff(sock, nanoId, skillId, 15, 8192, 14); // Treasure Finder
+            resp.eCSTB___Add = 1;
+        }
+        
+    } else
+        plr->activeNano = 0;
+    
+    sock->sendPacket((void*)&resp, P_FE2CL_REP_NANO_ACTIVE_SUCC, sizeof(sP_FE2CL_REP_NANO_ACTIVE_SUCC));
+    
     // Send to other players
     INITSTRUCT(sP_FE2CL_NANO_ACTIVE, pkt1);
 
@@ -234,4 +328,338 @@ void NanoManager::resetNanoSkill(CNSocket* sock, int16_t nanoId) {
     nano.iSkillID = 0;
     plr->Nanos[nanoId] = nano;
 }
+
+// this is where the fun begins
+void NanoManager::nanoDebuff(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int16_t eSkillType, int32_t iCBFlag, int32_t damageAmount) {
+    sP_CL2FE_REQ_NANO_SKILL_USE* pkt = (sP_CL2FE_REQ_NANO_SKILL_USE*)data->buf;
+
+    // sanity check
+    if (!validInVarPacket(sizeof(sP_CL2FE_REQ_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(int32_t), data->size)) {
+        std::cout << "[WARN] bad sP_CL2FE_REQ_NANO_SKILL_USE packet size\n";
+        return;
+    }
+
+    int32_t *pktdata = (int32_t*)((uint8_t*)data->buf + sizeof(sP_CL2FE_REQ_NANO_SKILL_USE));
+
+    /*
+     * Due to the possibility of multiplication overflow (and regular buffer overflow),
+     * both incoming and outgoing variable-length packets must be validated, at least if
+     * the number of trailing structs isn't well known (ie. it's from the client).
+     */
+    if (!validOutVarPacket(sizeof(sP_FE2CL_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(sSkillResult_Damage_N_Debuff))) {
+        std::cout << "[WARN] bad sP_FE2CL_NANO_SKILL_USE packet size\n";
+        return;
+    }
+    
+    size_t resplen = sizeof(sP_FE2CL_NANO_SKILL_USE) + pkt->iTargetCnt * sizeof(sSkillResult_Damage_N_Debuff);
+    uint8_t respbuf[4096];
+        
+    memset(respbuf, 0, resplen);
+        
+    sP_FE2CL_NANO_SKILL_USE *resp = (sP_FE2CL_NANO_SKILL_USE*)respbuf;
+    sSkillResult_Damage_N_Debuff *respdata = (sSkillResult_Damage_N_Debuff*)(respbuf+sizeof(sP_FE2CL_NANO_SKILL_USE));
+        
+    Player *plr = PlayerManager::getPlayer(sock);
+    
+    resp->iPC_ID = plr->iID;
+    resp->iSkillID = skillId;
+    resp->iNanoID = nanoId;
+    resp->iNanoStamina = 150;
+    resp->eST = eSkillType;
+    resp->iTargetCnt = pkt->iTargetCnt;
+        
+    for (int i = 0; i < pkt->iTargetCnt; i++) {
+        if (NPCManager::NPCs.find(pktdata[i]) == NPCManager::NPCs.end()) {
+            // not sure how to best handle this
+            std::cout << "[WARN] nanoDebuffEnemy: mob ID not found" << std::endl;
+            return;
+        }
+        BaseNPC& mob = NPCManager::NPCs[pktdata[i]];
+        
+        mob.appearanceData.iHP -= damageAmount;
+
+        if (mob.appearanceData.iHP <= 0)
+            CombatManager::giveReward(sock);
+        
+        respdata[i].eCT = 4;
+        respdata[i].iDamage = damageAmount;
+        respdata[i].iID = mob.appearanceData.iNPC_ID;
+        respdata[i].iHP = mob.appearanceData.iHP;
+        respdata[i].iConditionBitFlag = iCBFlag;
+        std::cout << (int)mob.appearanceData.iNPC_ID << " was debuffed" << std::endl;
+    }
+
+    sock->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE_SUCC, resplen);
+    for (CNSocket* s : PlayerManager::players[sock].viewable)
+        s->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE, resplen);
+}
+
+void NanoManager::nanoHeal(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int16_t healAmount) {
+    sP_CL2FE_REQ_NANO_SKILL_USE* pkt = (sP_CL2FE_REQ_NANO_SKILL_USE*)data->buf;
+    Player *plr = PlayerManager::getPlayer(sock);
+
+    // sanity check
+    if (!validInVarPacket(sizeof(sP_CL2FE_REQ_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(int32_t), data->size)) {
+        std::cout << "[WARN] bad sP_CL2FE_REQ_NANO_SKILL_USE packet size\n";
+        return;
+    }
+
+    int32_t *pktdata = (int32_t*)((uint8_t*)data->buf + sizeof(sP_CL2FE_REQ_NANO_SKILL_USE));
+
+    /*
+     * Due to the possibility of multiplication overflow (and regular buffer overflow),
+     * both incoming and outgoing variable-length packets must be validated, at least if
+     * the number of trailing structs isn't well known (ie. it's from the client).
+     */
+    if (!validOutVarPacket(sizeof(sP_FE2CL_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(sSkillResult_Heal_HP))) {
+        std::cout << "[WARN] bad sP_FE2CL_NANO_SKILL_USE packet size\n";
+        return;
+    }
+    
+    size_t resplen = sizeof(sP_FE2CL_NANO_SKILL_USE) + pkt->iTargetCnt * sizeof(sSkillResult_Heal_HP);
+    uint8_t respbuf[4096];
+        
+    memset(respbuf, 0, resplen);
+        
+    sP_FE2CL_NANO_SKILL_USE *resp = (sP_FE2CL_NANO_SKILL_USE*)respbuf;
+    sSkillResult_Heal_HP *respdata = (sSkillResult_Heal_HP*)(respbuf+sizeof(sP_FE2CL_NANO_SKILL_USE));
+        
+    resp->iPC_ID = plr->iID;
+    resp->iSkillID = skillId;
+    resp->iNanoID = nanoId;
+    resp->iNanoStamina = 150;
+    resp->eST = 2; //heal enum TODO: Send these enums to Defines
+    resp->iTargetCnt = pkt->iTargetCnt;
+        
+    for (int i = 0; i < pkt->iTargetCnt; i++) {    
+        for (auto pair : PlayerManager::players) {
+            if (pair.second.plr->iID == pktdata[i]) { 
+                Player* plr = pair.second.plr;
+                               
+                if (plr->HP + healAmount > 3625)
+                    plr->HP = 3625;
+                else
+                    plr->HP += healAmount;
+                
+                respdata[i].eCT = 1;
+                respdata[i].iID = plr->iID;
+                respdata[i].iHP = plr->HP;
+                respdata[i].iHealHP = healAmount;
+                
+                std::cout << (int)plr->iID << " was healed" << std::endl;
+            }
+        }   
+    }
+
+    sock->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE_SUCC, resplen);
+    for (CNSocket* s : PlayerManager::players[sock].viewable)
+        s->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE, resplen);
+}
+
+void NanoManager::nanoBuff(CNSocket* sock, int16_t nanoId, int skillId, int16_t eSkillType, int32_t iCBFlag, int16_t eCharStatusTimeBuffID, int16_t iValue) {
+    Player *plr = PlayerManager::getPlayer(sock);
+
+    if (!validOutVarPacket(sizeof(sP_FE2CL_NANO_SKILL_USE), 1, sizeof(sSkillResult_Buff))) {
+        std::cout << "[WARN] bad sP_FE2CL_NANO_SKILL_USE packet size\n";
+        return;
+    }
+    
+    size_t resplen = sizeof(sP_FE2CL_NANO_SKILL_USE) + sizeof(sSkillResult_Buff);
+    uint8_t respbuf[4096];
+        
+    memset(respbuf, 0, resplen);
+        
+    sP_FE2CL_NANO_SKILL_USE *resp = (sP_FE2CL_NANO_SKILL_USE*)respbuf;
+    sSkillResult_Buff *respdata = (sSkillResult_Buff*)(respbuf+sizeof(sP_FE2CL_NANO_SKILL_USE));
+        
+    resp->iPC_ID = plr->iID;
+    resp->iSkillID = skillId;
+    resp->iNanoID = nanoId;
+    resp->iNanoStamina = 150;
+    resp->eST = eSkillType; //run enum TODO: Send these enums to Defines
+    resp->iTargetCnt = 1;
+        
+    // this looks stupid but in the future there will be more counts (for group powers)
+    for (int i = 0; i < 1; i++) {
+        
+        plr->iConditionBitFlag += iCBFlag;
+        
+        respdata[i].eCT = 1;
+        respdata[i].iID = plr->iID;
+        respdata[i].iConditionBitFlag = iCBFlag;
+        
+        INITSTRUCT(sP_FE2CL_PC_BUFF_UPDATE, pkt1);
+    
+        pkt1.eCSTB = eCharStatusTimeBuffID; //eCharStatusTimeBuffID
+        pkt1.eTBU = 1; //eTimeBuffUpdate
+        pkt1.eTBT = 1; //eTimeBuffType 1 means nano
+        pkt1.iConditionBitFlag = plr->iConditionBitFlag;
+        
+        if (iValue > 0)
+            pkt1.TimeBuff.iValue = iValue;
+    
+        sock->sendPacket((void*)&pkt1, P_FE2CL_PC_BUFF_UPDATE, sizeof(sP_FE2CL_PC_BUFF_UPDATE));
+    }
+
+    sock->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE_SUCC, resplen);
+    for (CNSocket* s : PlayerManager::players[sock].viewable)
+        s->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE, resplen);
+}
+
+void NanoManager::nanoUnbuff(CNSocket* sock, int32_t iCBFlag, int16_t eCharStatusTimeBuffID, int16_t iValue) {
+    INITSTRUCT(sP_FE2CL_PC_BUFF_UPDATE, resp1);
+    
+    Player *plr = PlayerManager::getPlayer(sock);
+    if (iCBFlag < plr->iConditionBitFlag) // prevents integer underflow
+        plr->iConditionBitFlag -= iCBFlag;
+    else
+        plr->iConditionBitFlag = 0;
+    
+    resp1.eCSTB = eCharStatusTimeBuffID; //eCharStatusTimeBuffID
+    resp1.eTBU = 2; //eTimeBuffUpdate
+    resp1.eTBT = 1; //eTimeBuffType 1 means nano
+    resp1.iConditionBitFlag = plr->iConditionBitFlag;
+    
+    if (iValue > 0)
+        resp1.TimeBuff.iValue = iValue;
+    
+    sock->sendPacket((void*)&resp1, P_FE2CL_PC_BUFF_UPDATE, sizeof(sP_FE2CL_PC_BUFF_UPDATE));
+}
+
+void NanoManager::nanoDamage(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int32_t damageAmount) {
+    sP_CL2FE_REQ_NANO_SKILL_USE* pkt = (sP_CL2FE_REQ_NANO_SKILL_USE*)data->buf;
+
+    // sanity check
+    if (!validInVarPacket(sizeof(sP_CL2FE_REQ_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(int32_t), data->size)) {
+        std::cout << "[WARN] bad sP_CL2FE_REQ_NANO_SKILL_USE packet size\n";
+        return;
+    }
+
+    int32_t *pktdata = (int32_t*)((uint8_t*)data->buf + sizeof(sP_CL2FE_REQ_NANO_SKILL_USE));
+
+    /*
+     * Due to the possibility of multiplication overflow (and regular buffer overflow),
+     * both incoming and outgoing variable-length packets must be validated, at least if
+     * the number of trailing structs isn't well known (ie. it's from the client).
+     */
+    if (!validOutVarPacket(sizeof(sP_FE2CL_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(sSkillResult_Damage))) {
+        std::cout << "[WARN] bad sP_FE2CL_NANO_SKILL_USE packet size\n";
+        return;
+    }
+    
+    size_t resplen = sizeof(sP_FE2CL_NANO_SKILL_USE) + pkt->iTargetCnt * sizeof(sSkillResult_Damage);
+    uint8_t respbuf[4096];
+        
+    memset(respbuf, 0, resplen);
+        
+    sP_FE2CL_NANO_SKILL_USE *resp = (sP_FE2CL_NANO_SKILL_USE*)respbuf;
+    sSkillResult_Damage *respdata = (sSkillResult_Damage*)(respbuf+sizeof(sP_FE2CL_NANO_SKILL_USE));
+        
+    Player *plr = PlayerManager::getPlayer(sock);
+    
+    resp->iPC_ID = plr->iID;
+    resp->iSkillID = skillId;
+    resp->iNanoID = nanoId;
+    resp->iNanoStamina = 150;
+    resp->eST = 1;
+    resp->iTargetCnt = pkt->iTargetCnt;
+        
+    for (int i = 0; i < pkt->iTargetCnt; i++) {
+        if (NPCManager::NPCs.find(pktdata[i]) == NPCManager::NPCs.end()) {
+            // not sure how to best handle this
+            std::cout << "[WARN] nanoDebuffEnemy: mob ID not found" << std::endl;
+            return;
+        }
+        BaseNPC& mob = NPCManager::NPCs[pktdata[i]];
+        
+        mob.appearanceData.iHP -= damageAmount;
+
+        if (mob.appearanceData.iHP <= 0)
+            CombatManager::giveReward(sock);
+        
+        respdata[i].eCT = 4;
+        respdata[i].iDamage = damageAmount;
+        respdata[i].iID = mob.appearanceData.iNPC_ID;
+        respdata[i].iHP = mob.appearanceData.iHP;
+        std::cout << (int)mob.appearanceData.iNPC_ID << " was damaged" << std::endl;
+    }
+
+    sock->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE_SUCC, resplen);
+    for (CNSocket* s : PlayerManager::players[sock].viewable)
+        s->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE, resplen);
+}
+
+void NanoManager::nanoLeech(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int32_t leechAmount) {
+    sP_CL2FE_REQ_NANO_SKILL_USE* pkt = (sP_CL2FE_REQ_NANO_SKILL_USE*)data->buf;
+
+    // sanity check
+    if (!validInVarPacket(sizeof(sP_CL2FE_REQ_NANO_SKILL_USE), pkt->iTargetCnt, sizeof(int32_t), data->size)) {
+        std::cout << "[WARN] bad sP_CL2FE_REQ_NANO_SKILL_USE packet size\n";
+        return;
+    }
+
+    int32_t *pktdata = (int32_t*)((uint8_t*)data->buf + sizeof(sP_CL2FE_REQ_NANO_SKILL_USE));
+
+    /*
+     * Due to the possibility of multiplication overflow (and regular buffer overflow),
+     * both incoming and outgoing variable-length packets must be validated, at least if
+     * the number of trailing structs isn't well known (ie. it's from the client).
+     */
+    if (!validOutVarPacket(sizeof(sP_FE2CL_NANO_SKILL_USE) + sizeof(sSkillResult_Heal_HP), pkt->iTargetCnt, sizeof(sSkillResult_Damage))) {
+        std::cout << "[WARN] bad sP_FE2CL_NANO_SKILL_USE packet size\n";
+        return;
+    }
+    
+    size_t resplen = sizeof(sP_FE2CL_NANO_SKILL_USE) + sizeof(sSkillResult_Heal_HP) + pkt->iTargetCnt * sizeof(sSkillResult_Damage);
+    uint8_t respbuf[4096];
+        
+    memset(respbuf, 0, resplen);
+        
+    sP_FE2CL_NANO_SKILL_USE *resp = (sP_FE2CL_NANO_SKILL_USE*)respbuf;
+    sSkillResult_Heal_HP *resp2 = (sSkillResult_Heal_HP*)(respbuf+sizeof(sP_FE2CL_NANO_SKILL_USE));
+    sSkillResult_Damage *respdata = (sSkillResult_Damage*)(respbuf+sizeof(sP_FE2CL_NANO_SKILL_USE)+sizeof(sSkillResult_Heal_HP));
+        
+    Player *plr = PlayerManager::getPlayer(sock);
+    
+    resp->iPC_ID = plr->iID;
+    resp->iSkillID = skillId;
+    resp->iNanoID = nanoId;
+    resp->iNanoStamina = 150;
+    resp->eST = 30;
+    resp->iTargetCnt = pkt->iTargetCnt;
+    
+    if (plr->HP + leechAmount > 3625)
+        plr->HP = 3625;
+    else
+        plr->HP += leechAmount;
+                
+    resp2->eCT = 1;
+    resp2->iID = plr->iID;
+    resp2->iHP = plr->HP;
+    resp2->iHealHP = leechAmount;
+        
+    for (int i = 0; i < pkt->iTargetCnt; i++) {
+        if (NPCManager::NPCs.find(pktdata[i]) == NPCManager::NPCs.end()) {
+            // not sure how to best handle this
+            std::cout << "[WARN] nanoDebuffEnemy: mob ID not found" << std::endl;
+            return;
+        }
+        BaseNPC& mob = NPCManager::NPCs[pktdata[i]];
+        
+        mob.appearanceData.iHP -= leechAmount;
+
+        if (mob.appearanceData.iHP <= 0)
+            CombatManager::giveReward(sock);
+        
+        respdata[i].eCT = 4;
+        respdata[i].iDamage = leechAmount;
+        respdata[i].iID = mob.appearanceData.iNPC_ID;
+        respdata[i].iHP = mob.appearanceData.iHP;
+        std::cout << (int)mob.appearanceData.iNPC_ID << " was damaged" << std::endl;
+    }
+
+    sock->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE_SUCC, resplen);
+    for (CNSocket* s : PlayerManager::players[sock].viewable)
+        s->sendPacket((void*)&respbuf, P_FE2CL_NANO_SKILL_USE, resplen);
+}
 #pragma endregion

src/NanoManager.hpp

@@ -11,10 +11,18 @@ namespace NanoManager {
     void nanoSkillUseHandler(CNSocket* sock, CNPacketData* data);
     void nanoSkillSetHandler(CNSocket* sock, CNPacketData* data);
     void nanoSkillSetGMHandler(CNSocket* sock, CNPacketData* data);
+    void nanoRecallHandler(CNSocket* sock, CNPacketData* data);
 
     // Helper methods
     void addNano(CNSocket* sock, int16_t nanoId, int16_t slot);
     void summonNano(CNSocket* sock, int slot);
     void setNanoSkill(CNSocket* sock, int16_t nanoId, int16_t skillId);
     void resetNanoSkill(CNSocket* sock, int16_t nanoId);
+    
+    void nanoDebuff(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int16_t eSkillType, int32_t iCBFlag, int32_t damageAmount = 0);
+    void nanoHeal(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int16_t healAmount);
+    void nanoBuff(CNSocket* sock, int16_t nanoId, int skillId, int16_t eSkillType, int32_t iCBFlag, int16_t eCharStatusTimeBuffID, int16_t iValue = 0);
+    void nanoUnbuff(CNSocket* sock, int32_t iCBFlag, int16_t eCharStatusTimeBuffID, int16_t iValue = 0);
+    void nanoDamage(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int32_t damageAmount);
+    void nanoLeech(CNSocket* sock, CNPacketData* data, int16_t nanoId, int16_t skillId, int32_t leechAmount);
 }

src/Player.hpp

@@ -29,6 +29,7 @@ struct Player {
     int8_t iPCState;
     int32_t iWarpLocationFlag;
     int64_t aSkywayLocationFlag[2];
+    int32_t iConditionBitFlag;
 
     int x, y, z, angle;
     sItemBase Equip[AEQUIP_COUNT];