DropSpenserHandler.h

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#pragma once
 
#include "../../BlockEntities/DropSpenserEntity.h"
 
 
 
 
 
namespace DropSpenserHandler
{
    static bool IsActivated(NIBBLETYPE a_Meta)
    {
        return (a_Meta & E_META_DROPSPENSER_ACTIVATED) != 0;
    }
 
    static NIBBLETYPE SetActivationState(NIBBLETYPE a_Meta, bool IsOn)
    {
        if (IsOn)
        {
            return a_Meta | E_META_DROPSPENSER_ACTIVATED;  // set the bit
        }
        else
        {
            return a_Meta & ~E_META_DROPSPENSER_ACTIVATED;  // clear the bit
        }
    }
 
    static PowerLevel GetPowerDeliveredToPosition(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, Vector3i a_QueryPosition, BLOCKTYPE a_QueryBlockType, bool IsLinked)
    {
        UNUSED(a_Chunk);
        UNUSED(a_Position);
        UNUSED(a_BlockType);
        UNUSED(a_QueryPosition);
        UNUSED(a_QueryBlockType);
        UNUSED(IsLinked);
        return 0;
    }
 
    static void Update(cChunk & a_Chunk, cChunk &, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const PowerLevel Power)
    {
        // LOGD("Evaluating spencer the dropspenser (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
        const bool IsPoweredNow = (Power > 0);
        const bool WasPoweredPreviously = IsActivated(a_Meta);
 
        if (IsPoweredNow && !WasPoweredPreviously)
        {
            a_Chunk.DoWithBlockEntityAt(a_Position, [](cBlockEntity & a_BlockEntity)
            {
                ASSERT((a_BlockEntity.GetBlockType() == E_BLOCK_DISPENSER) || (a_BlockEntity.GetBlockType() == E_BLOCK_DROPPER));
 
                static_cast<cDropSpenserEntity &>(a_BlockEntity).Activate();
                return false;
            });
        }
 
        // Update the internal dropspenser state if necessary
        if (IsPoweredNow != WasPoweredPreviously)
        {
            a_Chunk.SetMeta(a_Position, SetActivationState(a_Meta, IsPoweredNow));
        }
    }
 
    static void ForValidSourcePositions(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, ForEachSourceCallback & Callback)
    {
        UNUSED(a_Chunk);
        UNUSED(a_BlockType);
        UNUSED(a_Meta);
 
        // Consider indirect power:
        Callback.CheckIndirectPower();
 
        // Consider normal adjacents:
        InvokeForAdjustedRelatives(Callback, a_Position, RelativeAdjacents);
    }
};