Silverfish.cpp

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#include "Globals.h"
 
#include "Silverfish.h"
 
#include "../World.h"
#include "../Chunk.h"
#include "../Blocks/BlockHandler.h"
#include "../Blocks/BlockInfested.h"
 
 
 
 
 
cSilverfish::cSilverfish() :
    Super("Silverfish", mtSilverfish, "entity.silverfish.hurt", "entity.silverfish.death", "entity.silverfish.ambient", 0.4f, 0.3f)
{
}
 
 
 
 
 
bool cSilverfish::DoTakeDamage(TakeDamageInfo &a_TDI)
{
    // Call on our brethren to attack!
    // TODO: stop this if /gamerule mobGriefing is set to false
 
    // If the entity didn't take any damage, bail:
    if (!Super::DoTakeDamage(a_TDI))
    {
        return false;
    }
 
    // Or, conversely took lethal damage, bail:
    if (m_Health <= 0)
    {
        return true;
    }
 
    if (a_TDI.Attacker == nullptr)
    {
        if ((a_TDI.DamageType != dtPoison) && (a_TDI.DamageType != dtPotionOfHarming))
        {
            // Bail if attacker doesn't exist and it wasn't a splash potion:
            return true;
        }
    }
    else if (!a_TDI.Attacker->IsPlayer())
    {
        // Bail if it wasn't a player attack:
        return true;
    }
 
    auto & Random = GetRandomProvider();
 
    // Tries to spawn another Silverfish, returning if the search should continue.
    auto CheckInfested = [this, &Random, Position = GetPosition().Floor()](const Vector3i Offset) mutable
    {
        const auto Block = Position + Offset;
        if (m_World->GetBlock(Block) == E_BLOCK_SILVERFISH_EGG)
        {
            m_World->DigBlock(Block);
            return Random.RandBool();
        }
        return false;
    };
 
    // Search the faces of an increasingly large cube (so the positions closest get looked at first)
    // of min 3, max 10, for infested blocks and spawn additional reinforcements:
    for (int CubeSideLength = 3; CubeSideLength <= 10; CubeSideLength += 2)
    {
        const int HalfSide = CubeSideLength / 2;
 
        for (int OffsetX = -HalfSide; OffsetX <= HalfSide; OffsetX++)
        {
            for (int OffsetZ = -HalfSide; OffsetZ <= HalfSide; OffsetZ++)
            {
                if (CheckInfested({ OffsetX, +HalfSide, OffsetZ }) || CheckInfested({ OffsetX, -HalfSide, OffsetZ }))
                {
                    return true;
                }
            }
        }
 
        for (int OffsetX = -HalfSide; OffsetX <= HalfSide; OffsetX++)
        {
            for (int OffsetY = -HalfSide + 1; OffsetY <= HalfSide - 1; OffsetY++)
            {
                if (CheckInfested({ OffsetX, OffsetY, +HalfSide }) || CheckInfested({ OffsetX, OffsetY, -HalfSide }))
                {
                    return true;
                }
            }
        }
 
        for (int OffsetZ = -HalfSide + 1; OffsetZ <= HalfSide - 1; OffsetZ++)
        {
            for (int OffsetY = -HalfSide + 1; OffsetY <= HalfSide - 1; OffsetY++)
            {
                if (CheckInfested({ +HalfSide, OffsetY, OffsetZ }) || CheckInfested({ -HalfSide, OffsetY, OffsetZ }))
                {
                    return true;
                }
            }
        }
    }
 
    return true;
}