ItemHandler.h

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#pragma once
 
#include "../Defines.h"
#include "../Item.h"
 
 
 
 
 
// fwd:
class cChunk;
class cWorld;
class cPlayer;
class cBlockPluginInterface;
 
 
 
 
 
class cItemHandler
{
public:
 
    friend class cItem;
 
    enum eDurabilityLostAction
    {
        dlaAttackEntity,
        dlaBreakBlock,
        dlaBreakBlockInstant,
    };
 
    constexpr cItemHandler(int a_ItemType) : m_ItemType(a_ItemType)
    {
    }
 
 
    void OnPlayerPlace(cPlayer & a_Player, const cItem & a_HeldItem, Vector3i a_ClickedPosition, BLOCKTYPE a_ClickedBlockType, NIBBLETYPE a_ClickedBlockMeta, eBlockFace a_ClickedBlockFace, Vector3i a_CursorPosition) const;
 
    virtual bool OnItemUse(
        cWorld * a_World,
        cPlayer * a_Player,
        cBlockPluginInterface & a_PluginInterface,
        const cItem & a_HeldItem,
        const Vector3i a_ClickedBlockPos,
        eBlockFace a_ClickedBlockFace
    ) const;
 
    virtual void OnItemShoot(cPlayer *, const Vector3i a_BlockPos, eBlockFace a_BlockFace) const
    {
        UNUSED(a_BlockPos);
        UNUSED(a_BlockFace);
    }
 
    virtual void OnUpdate(cWorld * a_World, cPlayer * a_Player, const cItem & a_Item) const
    {
        UNUSED(a_World);
        UNUSED(a_Player);
        UNUSED(a_Item);
    }
 
    virtual bool OnDiggingBlock(
        cWorld * a_World, cPlayer * a_Player, const cItem & a_HeldItem,
        const Vector3i a_ClickedBlockPos,
        eBlockFace a_ClickedBlockFace
    ) const;
 
    virtual void OnEntityAttack(cPlayer * a_Attacker, cEntity * a_AttackedEntity) const;
 
    virtual void OnFoodEaten(cWorld *a_World, cPlayer *a_Player, cItem *a_Item) const;
 
    virtual short GetDurabilityLossByAction(eDurabilityLostAction a_Action) const;
 
    virtual char GetMaxStackSize(void) const;
 
    struct FoodInfo
    {
        int    FoodLevel;
        double Saturation;
 
        constexpr FoodInfo(int a_FoodLevel, double a_Saturation) :
            FoodLevel(a_FoodLevel),
            Saturation(a_Saturation)
        {
        }
    } ;
 
    virtual FoodInfo GetFoodInfo(const cItem * a_Item) const;
 
    virtual bool EatItem(cPlayer * a_Player, cItem * a_Item) const;
 
    virtual bool IsFood(void) const;
 
    virtual bool IsDrinkable(short a_ItemDamage) const;
 
    virtual bool IsPlaceable(void) const;
 
    virtual bool CanRepairWithRawMaterial(short a_ItemType) const;
 
    virtual bool CanHarvestBlock(BLOCKTYPE a_BlockType) const;
 
    virtual float GetBlockBreakingStrength(BLOCKTYPE a_Block) const;
 
 
protected:
 
    static const cItemHandler & For(int a_ItemType);
 
    ~cItemHandler() = default;
 
    const int m_ItemType;
 
    virtual bool CommitPlacement(cPlayer & a_Player, const cItem & a_HeldItem, Vector3i a_PlacePosition, eBlockFace a_ClickedBlockFace, Vector3i a_CursorPosition) const;
};