Vendors, set nano skill command + serverside command issues fixed (#74)

Added basic shopkeeper functions, a player can buy the preset 3 items (cannonbolt set), all shopkeepers have the same items atm (need to check the shopkeeper tabledata), setting itemprice is something I didn't figure out.
Added set nano skill command
Implemented a switch for certain commands like health/taros/fusionmatter etc to be handled on the serverside aswell

Co-authored-by: dongresource <dongresource@protonmail.com>

src/NPCManager.cpp

@@ -1,4 +1,5 @@
 #include "NPCManager.hpp"
+#include "ItemManager.hpp"
 #include "settings.hpp"
 
 #include <cmath>
@@ -17,6 +18,116 @@ void NPCManager::init() {
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_WARP_USE_NPC, npcWarpHandler);
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_NPC_SUMMON, npcSummonHandler);
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_BARKER, npcBarkHandler);
+    REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_VENDOR_START, npcVendorStart);
+    REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_VENDOR_TABLE_UPDATE, npcVendorTable);
+    REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_VENDOR_ITEM_BUY, npcVendorBuy);
+}
+
+void NPCManager::npcVendorBuy(CNSocket* sock, CNPacketData* data) {
+    if (data->size != sizeof(sP_CL2FE_REQ_PC_VENDOR_ITEM_BUY))
+        return; // malformed packet
+
+    sP_CL2FE_REQ_PC_VENDOR_ITEM_BUY* req = (sP_CL2FE_REQ_PC_VENDOR_ITEM_BUY*)data->buf;
+    Player *plr = PlayerManager::getPlayer(sock);
+
+    int itemCost = 100; // TODO: placeholder, look up the price of item
+
+    int slot = ItemManager::findFreeSlot(plr);
+
+    if (itemCost > plr->money || slot == -1) {
+        // NOTE: VENDOR_ITEM_BUY_FAIL is not actually handled client-side.
+        INITSTRUCT(sP_FE2CL_REP_PC_VENDOR_ITEM_BUY_FAIL, failResp);
+        failResp.iErrorCode = 0;
+        sock->sendPacket((void*)&failResp, P_FE2CL_REP_PC_VENDOR_ITEM_BUY_FAIL, sizeof(sP_FE2CL_REP_PC_VENDOR_ITEM_BUY_FAIL));
+        return;
+    }
+
+    if (slot != req->iInvenSlotNum) {
+        // possible item stacking?
+        std::cout << "[WARN] Client and server disagree on bought item slot" << std::endl;
+    }
+
+    INITSTRUCT(sP_FE2CL_REP_PC_VENDOR_ITEM_BUY_SUCC, resp);
+
+    plr->money = plr->money - itemCost;
+    plr->Inven[slot] = req->Item;
+
+    resp.iCandy = plr->money;
+    resp.iInvenSlotNum = slot;
+    resp.Item = req->Item;
+
+    sock->sendPacket((void*)&resp, P_FE2CL_REP_PC_VENDOR_ITEM_BUY_SUCC, sizeof(sP_FE2CL_REP_PC_VENDOR_ITEM_BUY_SUCC));
+}
+
+void NPCManager::npcVendorTable(CNSocket* sock, CNPacketData* data) {
+    if (data->size != sizeof(sP_CL2FE_REQ_PC_VENDOR_TABLE_UPDATE))
+        return; // malformed packet
+
+    //sP_CL2FE_REQ_PC_VENDOR_TABLE_UPDATE* req = (sP_CL2FE_REQ_PC_VENDOR_TABLE_UPDATE*)data->buf;
+    INITSTRUCT(sP_FE2CL_REP_PC_VENDOR_TABLE_UPDATE_SUCC, resp);
+    // TODO: data needs to be read from shopkeeper tabledata
+    // check req->iVendorID and req->iNPC_ID
+
+    // Exaple Items
+    // shirt
+    sItemBase base1;
+    base1.iID = 60;
+    base1.iOpt = 0;
+    // expire date
+    base1.iTimeLimit = -1;
+    base1.iType = 1;
+
+    sItemVendor item1;
+    item1.item = base1;
+    item1.iSortNum = 0;
+    item1.iVendorID = 1;
+    // cost amount in float? (doesn't work rn, need to figure out)
+    item1.fBuyCost = 100.0;
+
+    // pants
+    sItemBase base2;
+    base2.iID = 61;
+    base2.iOpt = 0;
+    base2.iTimeLimit = -1;
+    base2.iType = 2;
+
+    sItemVendor item2;
+    item2.item = base2;
+    item2.iSortNum = 1;
+    item2.iVendorID = 1;
+    item2.fBuyCost = 250.0;
+
+    // shoes
+    sItemBase base3;
+    base3.iID = 51;
+    base3.iOpt = 0;
+    base3.iTimeLimit = -1;
+    base3.iType = 3;
+
+    sItemVendor item3;
+    item3.item = base3;
+    item3.iSortNum = 2;
+    item3.iVendorID = 1;
+    item3.fBuyCost = 350.0;
+
+    resp.item[0] = item1;
+    resp.item[1] = item2;
+    resp.item[2] = item3;
+
+    sock->sendPacket((void*)&resp, P_FE2CL_REP_PC_VENDOR_TABLE_UPDATE_SUCC, sizeof(sP_FE2CL_REP_PC_VENDOR_TABLE_UPDATE_SUCC));
+}
+
+void NPCManager::npcVendorStart(CNSocket* sock, CNPacketData* data) {
+    if (data->size != sizeof(sP_CL2FE_REQ_PC_VENDOR_START))
+        return; // malformed packet
+
+    sP_CL2FE_REQ_PC_VENDOR_START* req = (sP_CL2FE_REQ_PC_VENDOR_START*)data->buf;
+    INITSTRUCT(sP_FE2CL_REP_PC_VENDOR_START_SUCC, resp);
+
+    resp.iNPC_ID = req->iNPC_ID;
+    resp.iVendorID = req->iVendorID;
+
+    sock->sendPacket((void*)&resp, P_FE2CL_REP_PC_VENDOR_START_SUCC, sizeof(sP_FE2CL_REP_PC_VENDOR_START_SUCC));
 }
 
 void NPCManager::updatePlayerNPCS(CNSocket* sock, PlayerView& view) {

src/NPCManager.hpp

@@ -24,5 +24,9 @@ namespace NPCManager {
     void npcSummonHandler(CNSocket* sock, CNPacketData* data);
     void npcWarpHandler(CNSocket* sock, CNPacketData* data);
 
+    void npcVendorStart(CNSocket* sock, CNPacketData* data);
+    void npcVendorTable(CNSocket* sock, CNPacketData* data);
+    void npcVendorBuy(CNSocket* sock, CNPacketData* data);
+
     void updatePlayerNPCS(CNSocket* sock, PlayerView& plr);
 }

src/NanoManager.cpp

@@ -9,6 +9,7 @@ void NanoManager::init() {
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_NANO_UNEQUIP, nanoUnEquipHandler);
     REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_GIVE_NANO, nanoGMGiveHandler);
     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);
 }
 
@@ -124,6 +125,14 @@ void NanoManager::nanoSkillSetHandler(CNSocket* sock, CNPacketData* data) {
     setNanoSkill(sock, skill->iNanoID, skill->iTuneID);
 }
 
+void NanoManager::nanoSkillSetGMHandler(CNSocket* sock, CNPacketData* data) {
+    if (data->size != sizeof(sP_CL2FE_REQ_PC_GIVE_NANO_SKILL))
+        return; // malformed packet
+
+    sP_CL2FE_REQ_NANO_TUNE* skillGM = (sP_CL2FE_REQ_NANO_TUNE*)data->buf;
+    setNanoSkill(sock, skillGM->iNanoID, skillGM->iTuneID);
+}
+
 #pragma region Helper methods
 void NanoManager::addNano(CNSocket* sock, int16_t nanoId, int16_t slot) {
     if (nanoId > 36)

src/NanoManager.hpp

@@ -10,6 +10,7 @@ namespace NanoManager {
     void nanoGMGiveHandler(CNSocket* sock, CNPacketData* data);
     void nanoSkillUseHandler(CNSocket* sock, CNPacketData* data);
     void nanoSkillSetHandler(CNSocket* sock, CNPacketData* data);
+    void nanoSkillSetGMHandler(CNSocket* sock, CNPacketData* data);
 
     // Helper methods
     void addNano(CNSocket* sock, int16_t nanoId, int16_t slot);

src/PlayerManager.cpp

@@ -548,6 +548,8 @@ void PlayerManager::setSpecialPlayer(CNSocket* sock, CNPacketData* data) {
         return; // ignore the malformed packet
 
     sP_CL2FE_GM_REQ_PC_SET_VALUE* setData = (sP_CL2FE_GM_REQ_PC_SET_VALUE*)data->buf;
+    Player *plr = PlayerManager::getPlayer(sock);
+
     INITSTRUCT(sP_FE2CL_GM_REP_PC_SET_VALUE, response);
 
     DEBUGLOG(
@@ -557,6 +559,27 @@ void PlayerManager::setSpecialPlayer(CNSocket* sock, CNPacketData* data) {
         std::cout << "\tSetValue: " << setData->iSetValue << std::endl;
     )
 
+    // Handle serverside value-changes
+    switch (setData->iSetValueType) {
+    case 1:
+        plr->HP = setData->iSetValue;
+        break;
+    case 2:
+        // TODO: batteryW
+        break;
+    case 3:
+        // TODO: batteryN nanopotion
+        break;
+    case 4:
+        plr->fusionmatter = setData->iSetValue;
+        break;
+    case 5:
+        plr->money = setData->iSetValue;
+        break;
+    default:
+        break;
+    }
+
     response.iPC_ID = setData->iPC_ID;
     response.iSetValue = setData->iSetValue;
     response.iSetValueType = setData->iSetValueType;