ItemBottle.h

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#pragma once

#include "ItemHandler.h"
#include "../World.h"





class cItemBottleHandler :
    public cItemHandler
{
public:
    cItemBottleHandler() :
        cItemHandler(E_ITEM_GLASS_BOTTLE)
    {
    }


    bool GetBlockFromTrace(cWorld * a_World, cPlayer * a_Player, Vector3i & a_BlockPos)
    {
        class cCallbacks :
            public cBlockTracer::cCallbacks
        {
        public:
            Vector3i m_Pos;
            bool     m_HasHitFluid;


            cCallbacks(void) :
                m_HasHitFluid(false)
            {
            }

            virtual bool OnNextBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, eBlockFace a_EntryFace) override
            {
                if (IsBlockWater(a_BlockType))
                {
                    if (a_BlockMeta != 0)  // we're only looking for source blocks
                    {
                        return false;
                    }
                    m_HasHitFluid = true;
                    m_Pos.Set(a_BlockX, a_BlockY, a_BlockZ);
                    return true;
                }
                return false;
            }
        } Callbacks;

        cLineBlockTracer Tracer(*a_World, Callbacks);
        Vector3d Start(a_Player->GetEyePosition() + a_Player->GetLookVector());
        Vector3d End(a_Player->GetEyePosition() + a_Player->GetLookVector() * 5);

        Tracer.Trace(Start.x, Start.y, Start.z, End.x, End.y, End.z);

        if (!Callbacks.m_HasHitFluid)
        {
            return false;
        }


        a_BlockPos = Callbacks.m_Pos;
        return true;
    }



    virtual bool OnItemUse(
        cWorld * a_World, cPlayer * a_Player, cBlockPluginInterface & a_PluginInterface, const cItem & a_Item,
        int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace
        ) override
    {
        if (a_BlockFace != BLOCK_FACE_NONE)
        {
            return false;
        }

        Vector3i BlockPos;
        if (!GetBlockFromTrace(a_World, a_Player, BlockPos))
        {
            return false;  // Nothing in range.
        }

        a_Player->GetInventory().RemoveOneEquippedItem();
        cItem NewItem(E_ITEM_POTION, 1, 0);
        a_Player->GetInventory().AddItem(NewItem);
        return true;
    }
} ;