PistonHandler.h

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#pragma once
 
#include "../../Blocks/BlockPiston.h"
 
 
 
 
 
namespace PistonHandler
{
    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 pisty the piston (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
        const bool ShouldBeExtended = Power != 0;
        if (ShouldBeExtended == cBlockPistonHandler::IsExtended(a_Meta))
        {
            return;
        }
 
        a_Position = cChunkDef::RelativeToAbsolute(a_Position, a_Chunk.GetPos());
 
        if (ShouldBeExtended)
        {
            cBlockPistonHandler::ExtendPiston(a_Position, *a_Chunk.GetWorld());
        }
        else
        {
            cBlockPistonHandler::RetractPiston(a_Position, *a_Chunk.GetWorld());
        }
 
        // It is necessary to delay after a signal to prevent an infinite loop (#3168)
        // However, this delay is already present: as a side effect of the implementation of piston animation in Blocks\BlockPiston.cpp
    }
 
    static void ForValidSourcePositions(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, ForEachSourceCallback & Callback)
    {
        UNUSED(a_Chunk);
        UNUSED(a_BlockType);
 
        const auto Face = cBlockPistonHandler::MetaDataToDirection(a_Meta);
        const auto FrontOffset = AddFaceDirection(Vector3i(), Face);
 
        for (const auto & Offset : RelativeAdjacents)
        {
            if (Offset != FrontOffset)
            {
                Callback(a_Position + Offset);
            }
        }
 
        // Consider indirect power:
        Callback.CheckIndirectPower();
    }
};