// 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:
	/** The kind of projectile to create when shooting */
	cProjectileEntity::eKind m_ProjectileKind;

	/** The speed multiplier (to the player's normalized look vector) to set for the new projectile. */
	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;
	}
};