ItemThrowable.h

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// Declares the itemhandlers for throwable items: eggs, snowballs, ender pearls, and eyes of ender.
 
#pragma once
 
#include "ItemHandler.h"
#include "Entities/ProjectileEntity.h"
 
 
 
 
 
class cItemThrowableHandler:
    public cItemHandler
{
    using Super = cItemHandler;
 
public:
 
    constexpr cItemThrowableHandler(int a_ItemType, cProjectileEntity::eKind a_ProjectileKind, double a_SpeedCoeff):
        Super(a_ItemType),
        m_ProjectileKind(a_ProjectileKind),
        m_SpeedCoeff(a_SpeedCoeff)
    {
    }
 
 
 
 
 
    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
    {
        auto Pos = a_Player->GetThrowStartPos();
        auto Speed = a_Player->GetLookVector() * m_SpeedCoeff;
 
        // Create the projectile:
        if (a_World->CreateProjectile(Pos.x, Pos.y, Pos.z, m_ProjectileKind, a_Player, &a_Player->GetEquippedItem(), &Speed) == cEntity::INVALID_ID)
        {
            return false;
        }
 
        // Play sound:
        a_World->BroadcastSoundEffect("entity.arrow.shoot", a_Player->GetPosition() - Vector3d(0, a_Player->GetHeight(), 0), 0.5f, 0.4f / GetRandomProvider().RandReal(0.8f, 1.2f));
 
        // Remove from inventory
        if (!a_Player->IsGameModeCreative())
        {
            a_Player->GetInventory().RemoveOneEquippedItem();
        }
 
        return true;
    }
 
protected:
 
    cProjectileEntity::eKind m_ProjectileKind;
 
    double m_SpeedCoeff;
 
    ~cItemThrowableHandler() = default;
} ;
 
 
 
 
 
class cItemEggHandler final:
    public cItemThrowableHandler
{
    using Super = cItemThrowableHandler;
 
public:
 
    constexpr cItemEggHandler(int a_ItemType):
        Super(a_ItemType, cProjectileEntity::pkEgg, 30)
    {
    }
} ;
 
 
 
 
class cItemSnowballHandler final:
    public cItemThrowableHandler
{
    using Super = cItemThrowableHandler;
 
public:
 
    constexpr cItemSnowballHandler(int a_ItemType):
        Super(a_ItemType, cProjectileEntity::pkSnowball, 30)
    {
    }
} ;
 
 
 
 
 
class cItemEnderPearlHandler final:
    public cItemThrowableHandler
{
    using Super = cItemThrowableHandler;
 
public:
 
    constexpr cItemEnderPearlHandler(int a_ItemType):
        Super(a_ItemType, cProjectileEntity::pkEnderPearl, 30)
    {
    }
} ;
 
 
 
 
 
class cItemBottleOEnchantingHandler final :
    public cItemThrowableHandler
{
    using Super = cItemThrowableHandler;
 
public:
 
    constexpr cItemBottleOEnchantingHandler(int a_ItemType):
        Super(a_ItemType, cProjectileEntity::pkExpBottle, 14)
    {
    }
};
 
 
 
 
 
class cItemFireworkHandler final:
    public cItemThrowableHandler
{
    using Super = cItemThrowableHandler;
 
public:
 
    constexpr cItemFireworkHandler(int a_ItemType):
        Super(a_ItemType, cProjectileEntity::pkFirework, 0)
    {
    }
 
 
 
 
 
    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
    {
        if (a_World->GetBlock(a_ClickedBlockPos) == E_BLOCK_AIR)
        {
            return false;
        }
 
        if (a_World->CreateProjectile(Vector3d(a_ClickedBlockPos) + Vector3d(0.5, 1, 0.5), m_ProjectileKind, a_Player, &a_Player->GetEquippedItem()) == 0)
        {
            return false;
        }
 
        if (!a_Player->IsGameModeCreative())
        {
            a_Player->GetInventory().RemoveOneEquippedItem();
        }
 
        return true;
    }
};