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cuberite-2a/src/MobSpawner.cpp

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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "MobSpawner.h"
#include "BlockInfo.h"
#include "Mobs/IncludeAllMonsters.h"
#include "World.h"
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cMobSpawner::cMobSpawner(cMonster::eFamily a_MonsterFamily, const std::set<eMonsterType>& a_AllowedTypes) :
m_MonsterFamily(a_MonsterFamily),
m_NewPack(true),
m_MobType(mtInvalidType)
{
for (std::set<eMonsterType>::const_iterator itr = a_AllowedTypes.begin(); itr != a_AllowedTypes.end(); ++itr)
{
if (cMonster::FamilyFromType(*itr) == a_MonsterFamily)
{
m_AllowedTypes.insert(*itr);
}
}
}
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bool cMobSpawner::CheckPackCenter(BLOCKTYPE a_BlockType)
{
// Packs of non-water mobs can only be centered on an air block
// Packs of water mobs can only be centered on a water block
if (m_MonsterFamily == cMonster::mfWater)
{
return IsBlockWater(a_BlockType);
}
else
{
return a_BlockType == E_BLOCK_AIR;
}
}
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eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
{
std::vector<eMonsterType> AllowedMobs;
for (eMonsterType MobType : GetAllowedMobTypes(a_Biome))
{
auto itr = m_AllowedTypes.find(MobType);
if (itr != m_AllowedTypes.end())
{
AllowedMobs.push_back(MobType);
}
}
// Pick a random mob from the options:
if (AllowedMobs.empty())
{
return mtInvalidType;
}
return AllowedMobs[GetRandomProvider().RandInt(AllowedMobs.size() - 1)];
}
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bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, Vector3i a_RelPos, eMonsterType a_MobType, EMCSBiome a_Biome, bool a_DisableSolidBelowCheck)
{
if ((a_RelPos.y >= cChunkDef::Height - 1) || (a_RelPos.y <= 0))
{
return false;
}
if (cChunkDef::IsValidHeight(a_RelPos.y - 1) && (a_Chunk->GetBlock(a_RelPos.addedY(-1)) == E_BLOCK_BEDROCK))
{
return false; // Make sure mobs do not spawn on bedrock.
}
auto & Random = GetRandomProvider();
auto TargetBlock = a_Chunk->GetBlock(a_RelPos);
auto BlockLight = a_Chunk->GetBlockLight(a_RelPos);
auto SkyLight = a_Chunk->GetSkyLight(a_RelPos);
auto BlockAbove = a_Chunk->GetBlock(a_RelPos.addedY(1));
auto BlockBelow = a_Chunk->GetBlock(a_RelPos.addedY(-1));
SkyLight = a_Chunk->GetTimeAlteredLight(SkyLight);
switch (a_MobType)
{
case mtBat:
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{
return
(
(a_RelPos.y <= 63) &&
(BlockLight <= 4) &&
(SkyLight <= 4) &&
(TargetBlock == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockAbove))
);
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}
case mtBlaze:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck)) &&
(Random.RandBool())
);
}
case mtCaveSpider:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck)) &&
(SkyLight <= 7) &&
(BlockLight <= 7) &&
(Random.RandBool())
);
}
case mtChicken:
case mtCow:
case mtPig:
case mtHorse:
case mtRabbit:
case mtSheep:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(BlockBelow == E_BLOCK_GRASS) &&
(SkyLight >= 9)
);
}
case mtCreeper:
case mtSkeleton:
case mtZombie:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck)) &&
(SkyLight <= 7) &&
(BlockLight <= 7) &&
(Random.RandBool())
);
}
case mtEnderman:
{
if (a_RelPos.y < 250)
{
auto blockTop = a_Chunk->GetBlock(a_RelPos.addedY(2));
if (blockTop == E_BLOCK_AIR)
{
blockTop = a_Chunk->GetBlock(a_RelPos.addedY(3));
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(blockTop == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck)) &&
(SkyLight <= 7) &&
(BlockLight <= 7)
);
}
}
break;
}
case mtGhast:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(Random.RandBool(0.01))
);
}
case mtGuardian:
{
return
(
IsBlockWater(TargetBlock) &&
IsBlockWater(BlockBelow) &&
(a_RelPos.y >= 45) &&
(a_RelPos.y <= 62)
);
}
case mtMagmaCube:
case mtSlime:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck)) &&
((a_RelPos.y <= 40) || (a_Biome == biSwampland))
);
}
case mtMooshroom:
{
return
(
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(BlockBelow == E_BLOCK_MYCELIUM) &&
(
(a_Biome == biMushroomShore) ||
(a_Biome == biMushroomIsland)
)
);
}
case mtOcelot:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(
(BlockBelow == E_BLOCK_GRASS) || (BlockBelow == E_BLOCK_LEAVES) || (BlockBelow == E_BLOCK_NEW_LEAVES)
) &&
(a_RelPos.y >= 62) &&
(Random.RandBool(2.0 / 3.0))
);
}
case mtSpider:
{
bool CanSpawn = true;
bool HasFloor = false;
for (int x = 0; x < 2; ++x)
{
for (int z = 0; z < 2; ++z)
{
CanSpawn = a_Chunk->UnboundedRelGetBlockType(a_RelPos.addedXZ(x, z), TargetBlock);
CanSpawn = CanSpawn && (TargetBlock == E_BLOCK_AIR);
if (!CanSpawn)
{
return false;
}
HasFloor = (
HasFloor ||
(
a_Chunk->UnboundedRelGetBlockType(a_RelPos + Vector3i(x, -1, z), TargetBlock) &&
!cBlockInfo::IsTransparent(TargetBlock)
)
);
}
}
return CanSpawn && HasFloor && (SkyLight <= 7) && (BlockLight <= 7);
}
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case mtSquid:
{
return (
IsBlockWater(TargetBlock) &&
(a_RelPos.y >= 45) &&
(a_RelPos.y <= 62)
);
}
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case mtWitherSkeleton:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck)) &&
(SkyLight <= 7) &&
(BlockLight <= 7) &&
(Random.RandBool(0.6))
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);
}
case mtWolf:
{
return (
(TargetBlock == E_BLOCK_GRASS) &&
(BlockAbove == E_BLOCK_AIR) &&
(
(a_Biome == biColdTaiga) ||
(a_Biome == biColdTaigaHills) ||
(a_Biome == biColdTaigaM) ||
(a_Biome == biForest) ||
(a_Biome == biTaiga) ||
(a_Biome == biTaigaHills) ||
(a_Biome == biTaigaM) ||
(a_Biome == biMegaTaiga) ||
(a_Biome == biMegaTaigaHills)
)
);
}
case mtZombiePigman:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
((!cBlockInfo::IsTransparent(BlockBelow)) || (a_DisableSolidBelowCheck))
);
}
default:
{
LOGD("MG TODO: Write spawning rule for mob type %d", a_MobType);
return false;
}
}
return false;
}
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std::set<eMonsterType> cMobSpawner::GetAllowedMobTypes(EMCSBiome a_Biome)
{
std::set<eMonsterType> ListOfSpawnables;
// Check biomes first to get a list of animals
switch (a_Biome)
{
// Mooshroom only - no other mobs on mushroom islands
case biMushroomIsland:
case biMushroomShore:
{
ListOfSpawnables.insert(mtMooshroom);
return ListOfSpawnables;
}
// Add Squid in ocean and river biomes
case biOcean:
case biFrozenOcean:
case biFrozenRiver:
case biRiver:
case biDeepOcean:
{
ListOfSpawnables.insert(mtGuardian);
break;
}
// Add ocelots in jungle biomes
case biJungle:
case biJungleHills:
case biJungleEdge:
case biJungleM:
case biJungleEdgeM:
{
ListOfSpawnables.insert(mtOcelot);
break;
}
// Add horses in plains-like biomes
case biPlains:
case biSunflowerPlains:
case biSavanna:
case biSavannaPlateau:
case biSavannaM:
case biSavannaPlateauM:
{
ListOfSpawnables.insert(mtHorse);
break;
}
// Add wolves in forest biomes
case biForest:
{
ListOfSpawnables.insert(mtWolf);
break;
}
// Add wolves and rabbits in all taiga biomes
case biColdTaiga:
case biColdTaigaM:
case biColdTaigaHills:
case biTaiga:
case biTaigaHills:
case biTaigaM:
case biMegaTaiga:
case biMegaTaigaHills:
{
ListOfSpawnables.insert(mtWolf);
ListOfSpawnables.insert(mtRabbit);
break;
}
// Add rabbits in desert and flower forest biomes
case biDesert:
case biDesertHills:
case biDesertM:
case biFlowerForest:
{
ListOfSpawnables.insert(mtRabbit);
break;
}
// Nothing special about this biome
default:
{
break;
}
}
// Overworld
if (
(a_Biome != biDesertHills) &&
(a_Biome != biDesert) &&
(a_Biome != biDesertM) &&
(a_Biome != biBeach) &&
(a_Biome != biOcean) &&
(a_Biome != biDeepOcean))
{
ListOfSpawnables.insert(mtSheep);
ListOfSpawnables.insert(mtPig);
ListOfSpawnables.insert(mtCow);
ListOfSpawnables.insert(mtChicken);
ListOfSpawnables.insert(mtEnderman);
ListOfSpawnables.insert(mtSlime);
}
ListOfSpawnables.insert(mtBat);
ListOfSpawnables.insert(mtSpider);
ListOfSpawnables.insert(mtZombie);
ListOfSpawnables.insert(mtSkeleton);
ListOfSpawnables.insert(mtCreeper);
ListOfSpawnables.insert(mtSquid);
// Nether
ListOfSpawnables.insert(mtBlaze);
ListOfSpawnables.insert(mtGhast);
ListOfSpawnables.insert(mtMagmaCube);
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ListOfSpawnables.insert(mtWitherSkeleton);
ListOfSpawnables.insert(mtZombiePigman);
return ListOfSpawnables;
}
cMonster * cMobSpawner::TryToSpawnHere(cChunk * a_Chunk, Vector3i a_RelPos, EMCSBiome a_Biome, int & a_MaxPackSize)
{
// If too close to any player, don't spawn anything
auto AbsPos = a_Chunk->RelativeToAbsolute(a_RelPos);
static const double RangeLimit = 24;
if (
a_Chunk->GetWorld()->DoWithNearestPlayer(
AbsPos,
RangeLimit,
[](cPlayer & a_Player)
{
return true;
}
)
)
{
return nullptr;
}
if (m_NewPack)
{
m_MobType = ChooseMobType(a_Biome);
if (m_MobType == mtInvalidType)
{
return nullptr;
}
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if (m_MobType == mtWitherSkeleton)
{
a_MaxPackSize = 5;
}
else if (m_MobType == mtWolf)
{
a_MaxPackSize = 8;
}
else if (m_MobType == mtGhast)
{
a_MaxPackSize = 1;
}
m_NewPack = false;
}
if ((m_AllowedTypes.find(m_MobType) != m_AllowedTypes.end()) && CanSpawnHere(a_Chunk, a_RelPos, m_MobType, a_Biome))
{
auto NewMob = cMonster::NewMonsterFromType(m_MobType);
auto NewMobPtr = NewMob.get();
if (NewMob)
{
m_Spawned.push_back(std::move(NewMob));
}
return NewMobPtr;
}
return nullptr;
}
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void cMobSpawner::NewPack()
{
m_NewPack = true;
}
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bool cMobSpawner::CanSpawnAnything(void)
{
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return !m_AllowedTypes.empty();
}
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