Misc changes.

The first two fixes were caught by infer. The Big Bug(tm) remains
unfixed.

* Fixed the Leech nano power
* Fixed an unlikely nullptr dereference in ItemManager
* /toggleai now makes mobs retreat immediately, instead of waiting for
their next movement tick
* Static path mobs will now stop in place instead of retreating to
their spawn points when AI is disabled
* Changed the misleading config option name from "chunksize" to
"viewdistance", since it's actually only a third of the chunk size

config.ini

@@ -19,8 +19,9 @@ dbsaveinterval=240
 [shard]
 port=8002
 ip=127.0.0.1
-# distance at which other players and NPCs become visible
-chunksize=30000
+# distance at which other players and NPCs become visible.
+# this value is used for calculating chunk size
+viewdistance=30000
 # time, in milliseconds, to wait before kicking a non-responsive client
 # default is 1 minute
 timeout=60000

src/ChatManager.cpp

@@ -279,10 +279,18 @@ void toggleAiCommand(std::string full, std::vector<std::string>& args, CNSocket*
     for (auto& pair : MobManager::Mobs) {
         pair.second->state = MobState::RETREAT;
         pair.second->target = nullptr;
+        pair.second->nextMovement = getTime();
 
-        pair.second->roamX = pair.second->spawnX;
-        pair.second->roamY = pair.second->spawnY;
-        pair.second->roamZ = pair.second->spawnZ;
+        // mobs with static paths can chill where they are
+        if (pair.second->staticPath) {
+            pair.second->roamX = pair.second->appearanceData.iX;
+            pair.second->roamY = pair.second->appearanceData.iY;
+            pair.second->roamZ = pair.second->appearanceData.iZ;
+        } else {
+            pair.second->roamX = pair.second->spawnX;
+            pair.second->roamY = pair.second->spawnY;
+            pair.second->roamZ = pair.second->spawnZ;
+        }
     }
 }
 

src/ChunkManager.cpp

@@ -109,7 +109,7 @@ bool ChunkManager::checkChunk(std::tuple<int, int, int> chunk) {
 }
 
 std::tuple<int, int, int> ChunkManager::grabChunk(int posX, int posY, int instanceID) {
-    return std::make_tuple(posX / (settings::CHUNKSIZE / 3), posY / (settings::CHUNKSIZE / 3), instanceID);
+    return std::make_tuple(posX / (settings::VIEWDISTANCE / 3), posY / (settings::VIEWDISTANCE / 3), instanceID);
 }
 
 std::vector<Chunk*> ChunkManager::grabChunks(std::tuple<int, int, int> chunk) {

src/ItemManager.cpp

@@ -5,7 +5,7 @@
 #include "NanoManager.hpp"
 #include "Player.hpp"
 
-#include <string.h> // for memset() and memcmp()
+#include <string.h> // for memset()
 #include <assert.h>
 
 std::map<std::pair<int32_t, int32_t>, Item> ItemManager::ItemData;
@@ -911,6 +911,10 @@ void ItemManager::setItemStats(Player* plr) {
 
     for (int i = 0; i < 4; i++) {
         itemStatsDat = ItemManager::getItemData(plr->Equip[i].iID, plr->Equip[i].iType);
+        if (itemStatsDat == nullptr) {
+            std::cout << "[WARN] setItemStats(): getItemData() returned NULL" << std::endl;
+            continue;
+        }
         plr->pointDamage += itemStatsDat->pointDamage;
         plr->groupDamage += itemStatsDat->groupDamage;
         plr->defense += itemStatsDat->defense;

src/NanoManager.cpp

@@ -625,9 +625,9 @@ void activePower(CNSocket *sock, CNPacketData *data,
             return;
 
         pkt->iTargetCnt = otherPlr->groupCnt;
-    }
-
-    resplen = sizeof(sP_FE2CL_NANO_SKILL_USE_SUCC) + pkt->iTargetCnt * sizeof(sPAYLOAD);
+        resplen = sizeof(sP_FE2CL_NANO_SKILL_USE_SUCC) + pkt->iTargetCnt * sizeof(sPAYLOAD);
+    } else
+        resplen = sizeof(sP_FE2CL_NANO_SKILL_USE_SUCC) + pkt->iTargetCnt * sizeof(sPAYLOAD);
 
     // validate response packet
     if (!validOutVarPacket(sizeof(sP_FE2CL_NANO_SKILL_USE_SUCC), pkt->iTargetCnt, sizeof(sPAYLOAD))) {

src/settings.cpp

@@ -12,7 +12,7 @@ int settings::DBSAVEINTERVAL = 240;
 int settings::SHARDPORT = 8002;
 std::string settings::SHARDSERVERIP = "127.0.0.1";
 time_t settings::TIMEOUT = 60000;
-int settings::CHUNKSIZE = 40000;
+int settings::VIEWDISTANCE = 40000;
 bool settings::SIMULATEMOBS = true;
 
 // default spawn point is Sector V (future)
@@ -47,7 +47,7 @@ void settings::init() {
     SHARDSERVERIP = reader.Get("shard", "ip", "127.0.0.1");
     DBSAVEINTERVAL = reader.GetInteger("shard", "dbsaveinterval", DBSAVEINTERVAL);
     TIMEOUT = reader.GetInteger("shard", "timeout", TIMEOUT);
-    CHUNKSIZE = reader.GetInteger("shard", "chunksize", CHUNKSIZE);
+    VIEWDISTANCE = reader.GetInteger("shard", "viewdistance", VIEWDISTANCE);
     SIMULATEMOBS = reader.GetBoolean("shard", "simulatemobs", SIMULATEMOBS);
     SPAWN_X = reader.GetInteger("shard", "spawnx", SPAWN_X);
     SPAWN_Y = reader.GetInteger("shard", "spawny", SPAWN_Y);

src/settings.hpp

@@ -8,7 +8,7 @@ namespace settings {
     extern int SHARDPORT;
     extern std::string SHARDSERVERIP;
     extern time_t TIMEOUT;
-    extern int CHUNKSIZE;
+    extern int VIEWDISTANCE;
     extern bool SIMULATEMOBS;
     extern int SPAWN_X;
     extern int SPAWN_Y;