[refactor] Split MobManager.cpp into MobAI.cpp and Combat.cpp

This is terrible. It was a mistake to do this before cleaning up the
actual code. It might be better not to use this commit and to do this
refactor in a different order or something.

src/Combat.hpp

@@ -0,0 +1,65 @@
+#pragma once
+
+#include "CNProtocol.hpp"
+#include "CNShared.hpp"
+#include "CNShardServer.hpp"
+#include "NPC.hpp"
+#include "MobAI.hpp"
+
+#include "JSON.hpp"
+
+#include <map>
+#include <unordered_map>
+#include <queue>
+
+struct MobDropChance {
+    int dropChance;
+    std::vector<int> cratesRatio;
+};
+
+struct MobDrop {
+    std::vector<int> crateIDs;
+    int dropChanceType;
+    int taros;
+    int fm;
+    int boosts;
+};
+
+struct Bullet {
+    int pointDamage;
+    int groupDamage;
+    bool weaponBoost;
+    int bulletType;
+};
+
+namespace Combat {
+    extern std::map<int32_t, MobDropChance> MobDropChances;
+    extern std::map<int32_t, MobDrop> MobDrops;
+    extern std::map<int32_t, std::map<int8_t, Bullet>> Bullets;
+
+    void init();
+    void playerTick(CNServer*, time_t);
+
+    void pcAttackNpcs(CNSocket *sock, CNPacketData *data);
+    void combatBegin(CNSocket *sock, CNPacketData *data);
+    void combatEnd(CNSocket *sock, CNPacketData *data);
+    void dotDamageOnOff(CNSocket *sock, CNPacketData *data);
+    void dealGooDamage(CNSocket *sock, int amount);
+
+    void npcAttackPc(Mob *mob, time_t currTime);
+    int hitMob(CNSocket *sock, Mob *mob, int damage);
+    void killMob(CNSocket *sock, Mob *mob);
+    void giveReward(CNSocket *sock, Mob *mob, int rolledBoosts, int rolledPotions, int rolledCrate, int rolledCrateType, int rolledEvent);
+    void getReward(sItemBase *reward, MobDrop *drop, MobDropChance *chance, int rolled);
+    void giveEventReward(CNSocket* sock, Player* player, int rolled);
+
+    std::pair<int,int> lerp(int, int, int, int, int);
+    std::pair<int,int> getDamage(int, int, bool, bool, int, int, int);
+
+    void pcAttackChars(CNSocket *sock, CNPacketData *data);
+    void grenadeFire(CNSocket* sock, CNPacketData* data);
+    void rocketFire(CNSocket* sock, CNPacketData* data);
+    void projectileHit(CNSocket* sock, CNPacketData* data);
+    /// returns bullet id
+    int8_t addBullet(Player* plr, bool isGrenade);
+}