ItemBow.h

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#pragma once
 
#include "../Entities/ArrowEntity.h"
#include "ItemHandler.h"
 
 
 
 
 
class cItemBowHandler final:
    public cItemHandler
{
    using Super = cItemHandler;
 
public:
 
    using Super::Super;
 
 
 
 
 
    virtual bool OnItemUse(
        cWorld * a_World,
        cPlayer * a_Player,
        cBlockPluginInterface & a_PluginInterface,
        const cItem & a_HeldItem,
        const Vector3i a_ClickedBlockPos,
        eBlockFace a_ClickedBlockFace
    ) const override
    {
        ASSERT(a_Player != nullptr);
 
        // Check if the player has an arrow in the inventory, or is in Creative:
        if (!(a_Player->IsGameModeCreative() || a_Player->GetInventory().HasItems(cItem(E_ITEM_ARROW))))
        {
            return false;
        }
 
        a_Player->StartChargingBow();
        return true;
    }
 
 
 
    virtual void OnItemShoot(cPlayer * a_Player, const Vector3i a_BlockPos, eBlockFace a_BlockFace) const override
    {
        // Actual shot - produce the arrow with speed based on the number of ticks that the bow was charged
        UNUSED(a_BlockPos);
        ASSERT(a_Player != nullptr);
 
        int BowCharge = a_Player->FinishChargingBow();
        double Force = static_cast<double>(BowCharge) / 20.0;
        Force = (Force * Force + 2.0 * Force) / 3.0;  // This formula is used by the 1.6.2 client
        if (Force < 0.1)
        {
            // Too little force, ignore the shot
            return;
        }
        Force = std::min(Force, 1.0);
 
        // Does the player have an arrow?
        if (!a_Player->IsGameModeCreative() && !a_Player->GetInventory().HasItems(cItem(E_ITEM_ARROW)))
        {
            return;
        }
 
        // Create the arrow entity:
        auto Arrow = std::make_unique<cArrowEntity>(*a_Player, Force * 2);
        auto ArrowPtr = Arrow.get();
        if (!ArrowPtr->Initialize(std::move(Arrow), *a_Player->GetWorld()))
        {
            return;
        }
        a_Player->GetWorld()->BroadcastSoundEffect(
            "entity.arrow.shoot",
            a_Player->GetPosition(),
            0.5,
            static_cast<float>(Force)
        );
        if (!a_Player->IsGameModeCreative())
        {
            if (a_Player->GetEquippedItem().m_Enchantments.GetLevel(cEnchantments::enchInfinity) == 0)
            {
                a_Player->GetInventory().RemoveItem(cItem(E_ITEM_ARROW));
            }
            else
            {
                ArrowPtr->SetPickupState(cArrowEntity::psNoPickup);
            }
 
            a_Player->UseEquippedItem();
        }
        if (a_Player->GetEquippedItem().m_Enchantments.GetLevel(cEnchantments::enchFlame) > 0)
        {
            ArrowPtr->StartBurning(100);
        }
    }
} ;