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Improve Silverfish search 

* Start from the inside out, don't always look at the entire search space by bailing out randomly
This commit is contained in:
Tiger Wang 2020-12-20 02:14:17 +00:00
parent d9cd2f741d
commit e7331fe820
2 changed files with 75 additions and 37 deletions
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107
src/Mobs/Silverfish.cpp
View File

@ -8,53 +8,94 @@
#include "../Blocks/BlockHandler.h"
#include "../Blocks/BlockInfested.h"
bool cSilverfish::DoTakeDamage(TakeDamageInfo &a_TDI)
{
bool SuperResult = Super::DoTakeDamage(a_TDI);
// Todo: stop this if /gamerule mobGriefing is set to false
// Call on our brethren to attack!
// TODO: stop this if /gamerule mobGriefing is set to false
// If the entity didn't take andy damage
if (!SuperResult)
// If the entity didn't take any damage, bail:
if (!Super::DoTakeDamage(a_TDI))
{
return SuperResult;
return false;
}
// Entity does receive lethal damage or Attacker doesn't exist
if ((m_Health < a_TDI.FinalDamage) ||
((a_TDI.Attacker == nullptr) && (a_TDI.DamageType != dtPoison) && (a_TDI.DamageType != dtPotionOfHarming)))
// Or, conversely took lethal damage, bail:
if (m_Health <= 0)
{
return SuperResult;
return true;
}
// If attacker is player or splash potion
bool ShouldSpawn = (
(a_TDI.DamageType == dtPoison) || (a_TDI.DamageType == dtPotionOfHarming) ||
a_TDI.Attacker->IsPlayer()
);
if (!ShouldSpawn)
if (a_TDI.Attacker == nullptr)
{
return SuperResult;
}
auto Blocks = sSetBlockVector();
for (int X = static_cast<int>(GetPosX() - 10); X <= static_cast<int>(GetPosX() + 10); X++)
{
for (int Y = static_cast<int>(GetPosY() - 5); Y <= static_cast<int>(GetPosY() + 5); Y++)
if ((a_TDI.DamageType != dtPoison) && (a_TDI.DamageType != dtPotionOfHarming))
{
for (int Z = static_cast<int>(GetPosZ() - 10); Z <= static_cast<int>(GetPosZ() + 10); Z++)
// 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++)
{
const int HalfSide = CubeSideLength / 2;
for (int OffsetX = -HalfSide; OffsetX <= HalfSide; OffsetX++)
{
for (int OffsetZ = -HalfSide; OffsetZ <= HalfSide; OffsetZ++)
{
Blocks.emplace_back(sSetBlock({X, Y, Z}, 0, 0));
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;
}
}
}
}
m_World->GetBlocks(Blocks, true);
for (const auto & BlockInfo : Blocks)
{
if (BlockInfo.m_BlockType == E_BLOCK_SILVERFISH_EGG)
{
m_World->DigBlock(BlockInfo.GetAbsolutePos(), nullptr);
}
}
return SuperResult;
return true;
}

5
src/Mobs/Silverfish.h
View File

@ -18,11 +18,8 @@ public:
Super("Silverfish", mtSilverfish, "entity.silverfish.hurt", "entity.silverfish.death", "entity.silverfish.ambient", 0.3, 0.4)
{
}
CLASS_PROTODEF(cSilverfish)
virtual bool DoTakeDamage(TakeDamageInfo & a_TDI) override;
} ;