PluginLua.h

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// PluginLua.h

// Declares the cPluginLua class representing a plugin written in Lua





#pragma once

#include "Plugin.h"
#include "LuaState.h"

// Names for the global variables through which the plugin is identified in its LuaState
#define LUA_PLUGIN_NAME_VAR_NAME     "_CuberiteInternal_PluginName"
#define LUA_PLUGIN_INSTANCE_VAR_NAME "_CuberiteInternal_PluginInstance"





// tolua_begin
class cPluginLua :
    public cPlugin
{
    typedef cPlugin super;

public:
    // tolua_end

    class cOperation
    {
    public:
        cOperation(cPluginLua & a_Plugin) :
            m_Plugin(a_Plugin),
            m_Lock(a_Plugin.m_LuaState)
        {
        }

        cLuaState & operator ()(void) { return m_Plugin.m_LuaState; }

    protected:
        cPluginLua & m_Plugin;

        cLuaState::cLock m_Lock;
    } ;



    cPluginLua(const AString & a_PluginDirectory, cDeadlockDetect & a_DeadlockDetect);
    virtual ~cPluginLua() override;

    virtual void OnDisable(void) override;
    virtual bool Load(void) override;
    virtual void Unload(void) override;

    virtual void Tick(float a_Dt) override;

    virtual bool OnBlockSpread              (cWorld & a_World, int a_BlockX, int a_BlockY, int a_BlockZ, eSpreadSource a_Source) override;
    virtual bool OnBlockToPickups           (cWorld & a_World, Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, const cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool, cItems & a_Pickups) override;
    virtual bool OnBrewingCompleting        (cWorld & a_World, cBrewingstandEntity & a_BrewingstandEntity) override;
    virtual bool OnBrewingCompleted         (cWorld & a_World, cBrewingstandEntity & a_BrewingstandEntity) override;
    virtual bool OnChat                     (cPlayer & a_Player, AString & a_Message) override;
    virtual bool OnChunkAvailable           (cWorld & a_World, int a_ChunkX, int a_ChunkZ) override;
    virtual bool OnChunkGenerated           (cWorld & a_World, int a_ChunkX, int a_ChunkZ, cChunkDesc * a_ChunkDesc) override;
    virtual bool OnChunkGenerating          (cWorld & a_World, int a_ChunkX, int a_ChunkZ, cChunkDesc * a_ChunkDesc) override;
    virtual bool OnChunkUnloaded            (cWorld & a_World, int a_ChunkX, int a_ChunkZ) override;
    virtual bool OnChunkUnloading           (cWorld & a_World, int a_ChunkX, int a_ChunkZ) override;
    virtual bool OnCollectingPickup         (cPlayer & a_Player, cPickup & a_Pickup) override;
    virtual bool OnCraftingNoRecipe         (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe) override;
    virtual bool OnDisconnect               (cClientHandle & a_Client, const AString & a_Reason) override;
    virtual bool OnEntityAddEffect          (cEntity & a_Entity, int a_EffectType, int a_EffectDurationTicks, int a_EffectIntensity, double a_DistanceModifier) override;
    virtual bool OnEntityChangingWorld      (cEntity & a_Entity, cWorld & a_World) override;
    virtual bool OnEntityChangedWorld       (cEntity & a_Entity, cWorld & a_World) override;
    virtual bool OnExecuteCommand           (cPlayer * a_Player, const AStringVector & a_Split, const AString & a_EntireCommand, cPluginManager::CommandResult & a_Result) override;
    virtual bool OnExploded                 (cWorld & a_World, double a_ExplosionSize,   bool a_CanCauseFire,   double a_X, double a_Y, double a_Z, eExplosionSource a_Source, void * a_SourceData) override;
    virtual bool OnExploding                (cWorld & a_World, double & a_ExplosionSize, bool & a_CanCauseFire, double a_X, double a_Y, double a_Z, eExplosionSource a_Source, void * a_SourceData) override;
    virtual bool OnHandshake                (cClientHandle & a_Client, const AString & a_Username) override;
    virtual bool OnHopperPullingItem        (cWorld & a_World, cHopperEntity & a_Hopper, int a_DstSlotNum, cBlockEntityWithItems & a_SrcEntity, int a_SrcSlotNum) override;
    virtual bool OnHopperPushingItem        (cWorld & a_World, cHopperEntity & a_Hopper, int a_SrcSlotNum, cBlockEntityWithItems & a_DstEntity, int a_DstSlotNum) override;
    virtual bool OnKilled                   (cEntity & a_Victim, TakeDamageInfo & a_TDI, AString & a_DeathMessage) override;
    virtual bool OnKilling                  (cEntity & a_Victim, cEntity * a_Killer, TakeDamageInfo & a_TDI) override;
    virtual bool OnLogin                    (cClientHandle & a_Client, UInt32 a_ProtocolVersion, const AString & a_Username) override;
    virtual bool OnLoginForge               (cClientHandle & a_Client, const AStringMap & a_Mods) override;
    virtual bool OnPlayerAnimation          (cPlayer & a_Player, int a_Animation) override;
    virtual bool OnPlayerBreakingBlock      (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
    virtual bool OnPlayerBrokenBlock        (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
    virtual bool OnPlayerDestroyed          (cPlayer & a_Player) override;
    virtual bool OnPlayerEating             (cPlayer & a_Player) override;
    virtual bool OnPlayerFished             (cPlayer & a_Player, const cItems & a_Reward) override;
    virtual bool OnPlayerFishing            (cPlayer & a_Player, cItems & a_Reward) override;
    virtual bool OnPlayerFoodLevelChange    (cPlayer & a_Player, int a_NewFoodLevel) override;
    virtual bool OnPlayerJoined             (cPlayer & a_Player) override;
    virtual bool OnPlayerLeftClick          (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, char a_Status) override;
    virtual bool OnPlayerMoving             (cPlayer & a_Player, const Vector3d & a_OldPosition, const Vector3d & a_NewPosition) override;
    virtual bool OnPlayerOpeningWindow(cPlayer & a_Player, cWindow & a_Window) override;
    virtual bool OnPlayerPlacedBlock        (cPlayer & a_Player, const sSetBlock & a_BlockChange) override;
    virtual bool OnPlayerPlacingBlock       (cPlayer & a_Player, const sSetBlock & a_BlockChange) override;
    virtual bool OnPlayerRightClick         (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
    virtual bool OnPlayerRightClickingEntity(cPlayer & a_Player, cEntity & a_Entity) override;
    virtual bool OnPlayerShooting           (cPlayer & a_Player) override;
    virtual bool OnPlayerSpawned            (cPlayer & a_Player) override;
    virtual bool OnEntityTeleport           (cEntity & a_Entity, const Vector3d & a_OldPosition, const Vector3d & a_NewPosition) override;
    virtual bool OnPlayerTossingItem        (cPlayer & a_Player) override;
    virtual bool OnPlayerUsedBlock          (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
    virtual bool OnPlayerUsedItem           (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
    virtual bool OnPlayerUsingBlock         (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
    virtual bool OnPlayerUsingItem          (cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
    virtual bool OnPluginMessage            (cClientHandle & a_Client, const AString & a_Channel, const AString & a_Message) override;
    virtual bool OnPluginsLoaded            (void) override;
    virtual bool OnPostCrafting             (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe) override;
    virtual bool OnPreCrafting              (cPlayer & a_Player, cCraftingGrid & a_Grid, cCraftingRecipe & a_Recipe) override;
    virtual bool OnProjectileHitBlock       (cProjectileEntity & a_Projectile, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_Face, const Vector3d & a_BlockHitPos) override;
    virtual bool OnProjectileHitEntity      (cProjectileEntity & a_Projectile, cEntity & a_HitEntity) override;
    virtual bool OnServerPing               (cClientHandle & a_ClientHandle, AString & a_ServerDescription, int & a_OnlinePlayersCount, int & a_MaxPlayersCount, AString & a_Favicon) override;
    virtual bool OnSpawnedEntity            (cWorld & a_World, cEntity & a_Entity) override;
    virtual bool OnSpawnedMonster           (cWorld & a_World, cMonster & a_Monster) override;
    virtual bool OnSpawningEntity           (cWorld & a_World, cEntity & a_Entity) override;
    virtual bool OnSpawningMonster          (cWorld & a_World, cMonster & a_Monster) override;
    virtual bool OnTakeDamage               (cEntity & a_Receiver, TakeDamageInfo & a_TakeDamageInfo) override;
    virtual bool OnUpdatedSign              (cWorld & a_World, int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4, cPlayer * a_Player) override;
    virtual bool OnUpdatingSign             (cWorld & a_World, int a_BlockX, int a_BlockY, int a_BlockZ,       AString & a_Line1,       AString & a_Line2,       AString & a_Line3,       AString & a_Line4, cPlayer * a_Player) override;
    virtual bool OnWeatherChanged           (cWorld & a_World) override;
    virtual bool OnWeatherChanging          (cWorld & a_World, eWeather & a_NewWeather) override;
    virtual bool OnWorldStarted             (cWorld & a_World) override;
    virtual bool OnWorldTick                (cWorld & a_World, std::chrono::milliseconds a_Dt, std::chrono::milliseconds a_LastTickDurationMSec) override;

    bool CanAddOldStyleHook(int a_HookType);

    static const char * GetHookFnName(int a_HookType);

    bool AddHookCallback(int a_HookType, cLuaState::cCallbackPtr && a_Callback);

    int CallFunctionFromForeignState(
        const AString & a_FunctionName,
        cLuaState & a_ForeignState,
        int a_ParamStart,
        int a_ParamEnd
    );

    template <typename FnT, typename... Args>
    bool Call(FnT a_Fn, Args && ... a_Args)
    {
        return cOperation(*this)().Call(a_Fn, a_Args...);
    }

protected:
    typedef std::vector<cLuaState::cCallbackPtr> cLuaCallbacks;

    typedef std::map<int, cLuaCallbacks> cHookMap;


    cLuaState m_LuaState;

    cHookMap m_HookMap;

    cDeadlockDetect & m_DeadlockDetect;


    void Close(void);

    void ClearWebTabs(void);

    template <typename... Args>
    bool CallSimpleHooks(int a_HookType, Args && ... a_Args)
    {
        cOperation op(*this);
        auto & hooks = m_HookMap[a_HookType];
        bool res = false;
        for (auto & hook: hooks)
        {
            hook->Call(std::forward<Args>(a_Args)..., cLuaState::Return, res);
            if (res)
            {
                // Hook wants to terminate the chain processing
                return true;
            }
        }
        return false;
    }
} ;  // tolua_export