PressurePlateHandler.h

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#pragma once
 
#include "../../BoundingBox.h"
#include "../../Entities/Pickup.h"
 
 
 
 
 
namespace PressurePlateHandler
{
    static unsigned char GetPowerLevel(const cChunk & Chunk, const Vector3i Position, const BLOCKTYPE BlockType)
    {
        size_t NumberOfEntities = 0;
        bool FoundPlayer = false;
 
        Chunk.ForEachEntityInBox(cBoundingBox(Vector3d(0.5, 0, 0.5) + Position, 0.5, 0.5), [&](cEntity & Entity)
        {
            if (Entity.GetHealth() <= 0)
            {
                return false;
            }
 
            if (Entity.IsPlayer())
            {
                const auto & Player = static_cast<cPlayer &>(Entity);
 
                if (Player.IsGameModeSpectator())
                {
                    return false;
                }
 
                FoundPlayer = true;
            }
            else if (Entity.IsPickup())
            {
                const auto & Pickup = static_cast<cPickup &>(Entity);
                NumberOfEntities += static_cast<size_t>(Pickup.GetItem().m_ItemCount);
                return false;
            }
 
            NumberOfEntities++;
            return false;
        });
 
        switch (BlockType)
        {
            case E_BLOCK_STONE_PRESSURE_PLATE:
            {
                return FoundPlayer ? 15 : 0;
            }
            case E_BLOCK_WOODEN_PRESSURE_PLATE:
            {
                return (NumberOfEntities != 0) ? 15 : 0;
            }
            case E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE:
            {
                return std::min(static_cast<unsigned char>(CeilC(NumberOfEntities / 10.f)), static_cast<unsigned char>(15));
            }
            case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE:
            {
                return std::min(static_cast<unsigned char>(NumberOfEntities), static_cast<unsigned char>(15));
            }
            default:
            {
                ASSERT(!"Unhandled/unimplemented block in pressure plate handler!");
                return 0;
            }
        }
    }
 
    static const char * GetClickOnSound(BLOCKTYPE a_BlockType)
    {
        // manage on-sound
        switch (a_BlockType)
        {
            case E_BLOCK_STONE_PRESSURE_PLATE: return "block.stone_pressureplate.click_on";
            case E_BLOCK_WOODEN_PRESSURE_PLATE: return "block.wood_pressureplate.click_on";
            case E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE:
            case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE: return "block.metal_pressureplate.click_on";
            default:
            {
                ASSERT(!"No on sound for this one!");
                return "";
            }
        }
    }
 
    static const char * GetClickOffSound(BLOCKTYPE a_BlockType)
    {
        // manage off-sound
        switch (a_BlockType)
        {
            case E_BLOCK_STONE_PRESSURE_PLATE: return "block.stone_pressureplate.click_off";
            case E_BLOCK_WOODEN_PRESSURE_PLATE: return "block.wood_pressureplate.click_off";
            case E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE:
            case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE: return "block.metal_pressureplate.click_off";
            default:
            {
                ASSERT(!"No off sound for this one!");
                return "";
            }
        }
    }
 
    static PowerLevel GetPowerDeliveredToPosition(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, Vector3i a_QueryPosition, BLOCKTYPE a_QueryBlockType, bool IsLinked)
    {
        UNUSED(a_BlockType);
        UNUSED(a_QueryPosition);
        UNUSED(a_QueryBlockType);
 
        // Plates only link power blocks below
        // Retrieve and return the cached power calculated by Update for performance:
        return (IsLinked && (a_QueryPosition != (a_Position + OffsetYM))) ? 0 : DataForChunk(a_Chunk).GetCachedPowerData(a_Position);
    }
 
    static void Update(cChunk & a_Chunk, cChunk & CurrentlyTicking, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const PowerLevel Power)
    {
        // LOGD("Evaluating clicky the pressure plate (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
 
        auto & ChunkData = DataForChunk(a_Chunk);
 
        const auto PreviousPower = ChunkData.GetCachedPowerData(a_Position);
        const auto Absolute = cChunkDef::RelativeToAbsolute(a_Position, a_Chunk.GetPos());
        const auto PowerLevel = GetPowerLevel(a_Chunk, Absolute, a_BlockType);  // Get the current power of the platey
        const auto DelayInfo = ChunkData.GetMechanismDelayInfo(a_Position);
 
        // Resting state?
        if (DelayInfo == nullptr)
        {
            if (PowerLevel == 0)
            {
                // Nothing happened, back to rest
                return;
            }
 
            // From rest, a player stepped on us
            // Schedule a minimum 0.5 second delay before even thinking about releasing
            ChunkData.m_MechanismDelays[a_Position] = std::make_pair(5, true);
 
            a_Chunk.GetWorld()->BroadcastSoundEffect(GetClickOnSound(a_BlockType), Absolute, 0.5f, 0.6f);
 
            // Update power
            ChunkData.SetCachedPowerData(a_Position, PowerLevel);
 
            // Immediately depress plate
            a_Chunk.SetMeta(a_Position, E_META_PRESSURE_PLATE_DEPRESSED);
 
            UpdateAdjustedRelatives(a_Chunk, CurrentlyTicking, a_Position, RelativeAdjacents);
            return;
        }
 
        // Not a resting state
 
        int DelayTicks;
        bool HasExitedMinimumOnDelayPhase;
        std::tie(DelayTicks, HasExitedMinimumOnDelayPhase) = *DelayInfo;
 
        // Are we waiting for the initial delay or subsequent release delay?
        if (DelayTicks > 0)
        {
            // Nothing changes, if there is nothing on it anymore, because the state is locked.
            if (PowerLevel == 0)
            {
                return;
            }
 
            // Yes. Are we waiting to release, and found that the player stepped on it again?
            if (!HasExitedMinimumOnDelayPhase)
            {
                // Reset delay
                *DelayInfo = std::make_pair(0, true);
            }
 
            // Did the power level change and is still above zero?
            if (PowerLevel != PreviousPower)
            {
                // Yes. Update power
                ChunkData.SetCachedPowerData(a_Position, PowerLevel);
                UpdateAdjustedRelatives(a_Chunk, CurrentlyTicking, a_Position, RelativeAdjacents);
            }
 
            return;
        }
 
        // Not waiting for anything. Has the initial delay elapsed?
        if (HasExitedMinimumOnDelayPhase)
        {
            // Yep, initial delay elapsed. Has the player gotten off?
            if (PowerLevel == 0)
            {
                // Yes. Go into subsequent release delay, for a further 0.5 seconds
                *DelayInfo = std::make_pair(5, false);
                return;
            }
 
            // Did the power level change and is still above zero?
            if (PowerLevel != PreviousPower)
            {
                // Yes. Update power
                ChunkData.SetCachedPowerData(a_Position, PowerLevel);
                UpdateAdjustedRelatives(a_Chunk, CurrentlyTicking, a_Position, RelativeAdjacents);
            }
 
            // Yes, but player's still on the plate, do nothing
            return;
        }
 
        // Just got out of the subsequent release phase, reset everything and raise the plate
        ChunkData.m_MechanismDelays.erase(a_Position);
 
        a_Chunk.GetWorld()->BroadcastSoundEffect(GetClickOffSound(a_BlockType), Absolute, 0.5f, 0.5f);
        ChunkData.SetCachedPowerData(a_Position, PowerLevel);
 
        a_Chunk.SetMeta(a_Position, E_META_PRESSURE_PLATE_RAISED);
        UpdateAdjustedRelatives(a_Chunk, CurrentlyTicking, a_Position, RelativeAdjacents);
    }
 
    static void ForValidSourcePositions(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, ForEachSourceCallback & Callback)
    {
        UNUSED(a_Chunk);
        UNUSED(a_Position);
        UNUSED(a_BlockType);
        UNUSED(a_Meta);
        UNUSED(Callback);
    }
};