ItemBanner.h

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#pragma once
 
#include "ItemHandler.h"
#include "../World.h"
#include "../Blocks/BlockHandler.h"
#include "../BlockEntities/BannerEntity.h"
#include "../Blocks/ChunkInterface.h"
 
 
 
 
 
class cItemBannerHandler final:
    public cItemHandler
{
    using Super = cItemHandler;
 
public:
 
    using Super::Super;
 
private:
 
    virtual bool CommitPlacement(cPlayer & a_Player, const cItem & a_HeldItem, const Vector3i a_PlacePosition, const eBlockFace a_ClickedBlockFace, const Vector3i a_CursorPosition) const override
    {
        // Cannot place a banner at "no face" and from the bottom:
        if ((a_ClickedBlockFace == BLOCK_FACE_NONE) || (a_ClickedBlockFace == BLOCK_FACE_BOTTOM))
        {
            return false;
        }
 
        if (!TryPlaceBanner(a_Player, a_PlacePosition, a_ClickedBlockFace))
        {
            return false;
        }
 
        a_Player.GetWorld()->DoWithBlockEntityAt(a_PlacePosition, [&a_HeldItem](cBlockEntity & a_BlockEntity)
        {
            ASSERT((a_BlockEntity.GetBlockType() == E_BLOCK_STANDING_BANNER) || (a_BlockEntity.GetBlockType() == E_BLOCK_WALL_BANNER));
 
            cBannerEntity & BannerEntity = static_cast<cBannerEntity &>(a_BlockEntity);
            BannerEntity.SetBaseColor(static_cast<NIBBLETYPE>(a_HeldItem.m_ItemDamage));
            BannerEntity.SetCustomName(a_HeldItem.m_CustomName);
            return false;
        });
 
        return true;
    }
 
 
 
 
 
    virtual bool IsPlaceable(void) const override
    {
        return true;
    }
 
 
 
 
    static bool TryPlaceBanner(cPlayer & a_Player, const Vector3i a_PlacePosition, const eBlockFace a_ClickedBlockFace)
    {
        const auto Rotation = a_Player.GetYaw();
 
        // Placing on the floor:
        if (a_ClickedBlockFace == BLOCK_FACE_TOP)
        {
            NIBBLETYPE Meta;
 
            if ((Rotation >= -11.25f) && (Rotation < 11.25f))
            {
                // South
                Meta = 0x08;
            }
            else if ((Rotation >= 11.25f) && (Rotation < 33.75f))
            {
                // SouthSouthWest
                Meta = 0x09;
            }
            else if ((Rotation >= 23.75f) && (Rotation < 56.25f))
            {
                // SouthWest
                Meta = 0x0a;
            }
            else if ((Rotation >= 56.25f) && (Rotation < 78.75f))
            {
                // WestSouthWest
                Meta = 0x0b;
            }
            else if ((Rotation >= 78.75f) && (Rotation < 101.25f))
            {
                // West
                Meta = 0x0c;
            }
            else if ((Rotation >= 101.25f) && (Rotation < 123.75f))
            {
                // WestNorthWest
                Meta = 0x0d;
            }
            else if ((Rotation >= 123.75f) && (Rotation < 146.25f))
            {
                // NorthWest
                Meta = 0x0e;
            }
            else if ((Rotation >= 146.25f) && (Rotation < 168.75f))
            {
                // NorthNorthWest
                Meta = 0x0f;
            }
            else if ((Rotation >= -168.75f) && (Rotation < -146.25f))
            {
                // NorthNorthEast
                Meta = 0x01;
            }
            else if ((Rotation >= -146.25f) && (Rotation < -123.75f))
            {
                // NorthEast
                Meta = 0x02;
            }
            else if ((Rotation >= -123.75f) && (Rotation < -101.25f))
            {
                // EastNorthEast
                Meta = 0x03;
            }
            else if ((Rotation >= -101.25) && (Rotation < -78.75f))
            {
                // East
                Meta = 0x04;
            }
            else if ((Rotation >= -78.75) && (Rotation < -56.25f))
            {
                // EastSouthEast
                Meta = 0x05;
            }
            else if ((Rotation >= -56.25f) && (Rotation < -33.75f))
            {
                // SouthEast
                Meta = 0x06;
            }
            else if ((Rotation >= -33.75f) && (Rotation < -11.25f))
            {
                // SouthSouthEast
                Meta = 0x07;
            }
            else  // degrees jumping from 180 to -180
            {
                // North
                Meta = 0x00;
            }
 
            return a_Player.PlaceBlock(a_PlacePosition, E_BLOCK_STANDING_BANNER, Meta);
        }
 
        // We must be placing on the side of a block.
 
        NIBBLETYPE Meta;
 
        if (a_ClickedBlockFace == BLOCK_FACE_EAST)
        {
            Meta = 0x05;
        }
        else if (a_ClickedBlockFace == BLOCK_FACE_WEST)
        {
            Meta = 0x04;
        }
        else if (a_ClickedBlockFace == BLOCK_FACE_NORTH)
        {
            Meta = 0x02;
        }
        else  // degrees jumping from 180 to -180
        {
            Meta = 0x03;
        }
 
        return a_Player.PlaceBlock(a_PlacePosition, E_BLOCK_WALL_BANNER, Meta);
    }
};