Implemented mob roaming.

Will likely need further tuning.
Mobs in vacant chunks are skipped.

src/MobManager.hpp

@@ -5,6 +5,8 @@
 #include "CNShardServer.hpp"
 #include "NPC.hpp"
 
+#include "contrib/JSON.hpp"
+
 #include <map>
 
 enum class MobState {
@@ -22,14 +24,32 @@ struct Mob : public BaseNPC {
     const int regenTime;
     bool despawned = false; // for the sake of death animations
 
-    Mob(int x, int y, int z, int type, int hp, int angle, int rt)
-        : BaseNPC(x, y, z, type), maxHealth(hp), regenTime(rt) {
+    int spawnX;
+    int spawnY;
+    int spawnZ;
+
+    const int idleRange;
+    time_t nextMovement = 0;
+
+    // temporary; until we're sure what's what
+    nlohmann::json data;
+
+    Mob(int x, int y, int z, int type, int hp, int angle, nlohmann::json d)
+        : BaseNPC(x, y, z, type), maxHealth(hp), regenTime(d["m_iRegenTime"]), idleRange(d["m_iIdleRange"]), data(d) {
         state = MobState::ROAMING;
 
+        spawnX = appearanceData.iX;
+        spawnY = appearanceData.iY;
+        spawnZ = appearanceData.iZ;
+
         // NOTE: there appear to be discrepancies in the dump
         appearanceData.iHP = maxHealth;
     }
     ~Mob() {}
+
+    auto operator[](std::string s) {
+        return data[s];
+    }
 };
 
 namespace MobManager {
@@ -39,6 +59,7 @@ namespace MobManager {
     void step(time_t);
 
     void deadStep(Mob*, time_t);
+    void roamingStep(Mob*, time_t);
 
     void pcAttackNpcs(CNSocket *sock, CNPacketData *data);
     void combatBegin(CNSocket *sock, CNPacketData *data);