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cuberite-2a/src/MobSpawner.cpp
2017-06-13 21:35:30 +02:00

412 lines
8.6 KiB
C++

#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "MobSpawner.h"
#include "Mobs/IncludeAllMonsters.h"
#include "World.h"
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);
}
}
}
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;
}
}
void cMobSpawner::addIfAllowed(eMonsterType toAdd, std::set<eMonsterType>& toAddIn)
{
std::set<eMonsterType>::iterator itr = m_AllowedTypes.find(toAdd);
if (itr != m_AllowedTypes.end())
{
toAddIn.insert(toAdd);
}
}
eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
{
std::set<eMonsterType> allowedMobs;
if ((a_Biome == biMushroomIsland) || (a_Biome == biMushroomShore))
{
addIfAllowed(mtMooshroom, allowedMobs);
}
else if (a_Biome == biNether)
{
addIfAllowed(mtGhast, allowedMobs);
addIfAllowed(mtZombiePigman, allowedMobs);
addIfAllowed(mtMagmaCube, allowedMobs);
}
else if (a_Biome == biEnd)
{
addIfAllowed(mtEnderman, allowedMobs);
}
else
{
addIfAllowed(mtBat, allowedMobs);
addIfAllowed(mtSpider, allowedMobs);
addIfAllowed(mtZombie, allowedMobs);
addIfAllowed(mtSkeleton, allowedMobs);
addIfAllowed(mtCreeper, allowedMobs);
addIfAllowed(mtSquid, allowedMobs);
addIfAllowed(mtGuardian, allowedMobs);
if ((a_Biome != biDesert) && (a_Biome != biBeach) && (a_Biome != biOcean))
{
addIfAllowed(mtSheep, allowedMobs);
addIfAllowed(mtPig, allowedMobs);
addIfAllowed(mtCow, allowedMobs);
addIfAllowed(mtChicken, allowedMobs);
addIfAllowed(mtEnderman, allowedMobs);
addIfAllowed(mtRabbit, allowedMobs);
addIfAllowed(mtSlime, allowedMobs); // MG TODO : much more complicated rule
if ((a_Biome == biForest) || (a_Biome == biForestHills) || (a_Biome == biTaiga) || (a_Biome == biTaigaHills))
{
addIfAllowed(mtWolf, allowedMobs);
}
else if ((a_Biome == biJungle) || (a_Biome == biJungleHills))
{
addIfAllowed(mtOcelot, allowedMobs);
}
}
}
size_t allowedMobsSize = allowedMobs.size();
if (allowedMobsSize > 0)
{
std::set<eMonsterType>::iterator itr = allowedMobs.begin();
std::advance(itr, GetRandomProvider().RandInt<size_t>(allowedMobsSize - 1));
return *itr;
}
return mtInvalidType;
}
bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, eMonsterType a_MobType, EMCSBiome a_Biome)
{
if (a_Chunk == nullptr)
{
return false;
}
if (cChunkDef::IsValidHeight(a_RelY - 1) && (a_Chunk->GetBlock(a_RelX, a_RelY - 1, a_RelZ) == E_BLOCK_BEDROCK))
{
return false; // Make sure mobs do not spawn on bedrock.
}
auto & Random = GetRandomProvider();
BLOCKTYPE TargetBlock = a_Chunk->GetBlock(a_RelX, a_RelY, a_RelZ);
cPlayer * a_Closest_Player = a_Chunk->GetWorld()->FindClosestPlayer(a_Chunk->PositionToWorldPosition(a_RelX, a_RelY, a_RelZ), 24);
if (a_Closest_Player != nullptr) // Too close to a player, bail out
{
return false;
}
if ((a_RelY >= cChunkDef::Height - 1) || (a_RelY <= 0))
{
return false;
}
NIBBLETYPE BlockLight = a_Chunk->GetBlockLight(a_RelX, a_RelY, a_RelZ);
NIBBLETYPE SkyLight = a_Chunk->GetSkyLight(a_RelX, a_RelY, a_RelZ);
BLOCKTYPE BlockAbove = a_Chunk->GetBlock(a_RelX, a_RelY + 1, a_RelZ);
BLOCKTYPE BlockBelow = a_Chunk->GetBlock(a_RelX, a_RelY - 1, a_RelZ);
SkyLight = a_Chunk->GetTimeAlteredLight(SkyLight);
switch (a_MobType)
{
case mtGuardian:
{
return IsBlockWater(TargetBlock) && (a_RelY >= 45) && (a_RelY <= 62);
}
case mtSquid:
{
return IsBlockWater(TargetBlock) && (a_RelY >= 45) && (a_RelY <= 62);
}
case mtBat:
{
return (a_RelY <= 63) && (BlockLight <= 4) && (SkyLight <= 4) && (TargetBlock == E_BLOCK_AIR) && !cBlockInfo::IsTransparent(BlockAbove);
}
case mtChicken:
case mtCow:
case mtPig:
case mtHorse:
case mtRabbit:
case mtSheep:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockBelow)) &&
(BlockBelow == E_BLOCK_GRASS) &&
(SkyLight >= 9)
);
}
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_RelY >= 62) &&
(Random.RandBool(2.0 / 3.0))
);
}
case mtEnderman:
{
if (a_RelY < 250)
{
BLOCKTYPE BlockTop = a_Chunk->GetBlock(a_RelX, a_RelY + 2, a_RelZ);
if (BlockTop == E_BLOCK_AIR)
{
BlockTop = a_Chunk->GetBlock(a_RelX, a_RelY + 3, a_RelZ);
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(BlockTop == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockBelow)) &&
(SkyLight <= 7) &&
(BlockLight <= 7)
);
}
}
break;
}
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_RelX + x, a_RelY, a_RelZ + z, TargetBlock);
CanSpawn = CanSpawn && (TargetBlock == E_BLOCK_AIR);
if (!CanSpawn)
{
return false;
}
HasFloor = (
HasFloor ||
(
a_Chunk->UnboundedRelGetBlockType(a_RelX + x, a_RelY - 1, a_RelZ + z, TargetBlock) &&
!cBlockInfo::IsTransparent(TargetBlock)
)
);
}
}
return CanSpawn && HasFloor && (SkyLight <= 7) && (BlockLight <= 7);
}
case mtCaveSpider:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockBelow)) &&
(SkyLight <= 7) &&
(BlockLight <= 7) &&
(Random.RandBool())
);
}
case mtCreeper:
case mtSkeleton:
case mtZombie:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockBelow)) &&
(SkyLight <= 7) &&
(BlockLight <= 7) &&
(Random.RandBool())
);
}
case mtMagmaCube:
case mtSlime:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockBelow)) &&
(
(a_RelY <= 40) || (a_Biome == biSwampland)
)
);
}
case mtGhast:
case mtZombiePigman:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(!cBlockInfo::IsTransparent(BlockBelow)) &&
(Random.RandBool(0.05))
);
}
case mtWolf:
{
return (
(TargetBlock == E_BLOCK_GRASS) &&
(BlockAbove == E_BLOCK_AIR) &&
(
(a_Biome == biTaiga) ||
(a_Biome == biTaigaHills) ||
(a_Biome == biForest) ||
(a_Biome == biForestHills) ||
(a_Biome == biColdTaiga) ||
(a_Biome == biColdTaigaHills) ||
(a_Biome == biTaigaM) ||
(a_Biome == biMegaTaiga) ||
(a_Biome == biMegaTaigaHills)
)
);
}
case mtMooshroom:
{
return (
(TargetBlock == E_BLOCK_AIR) &&
(BlockAbove == E_BLOCK_AIR) &&
(BlockBelow == E_BLOCK_MYCELIUM) &&
(
(a_Biome == biMushroomShore) ||
(a_Biome == biMushroomIsland)
)
);
}
default:
{
LOGD("MG TODO: Write spawning rule for mob type %d", a_MobType);
return false;
}
}
return false;
}
cMonster * cMobSpawner::TryToSpawnHere(cChunk * a_Chunk, int a_RelX, int a_RelY, int a_RelZ, EMCSBiome a_Biome, int & a_MaxPackSize)
{
cMonster * toReturn = nullptr;
if (m_NewPack)
{
m_MobType = ChooseMobType(a_Biome);
if (m_MobType == mtInvalidType)
{
return toReturn;
}
if (m_MobType == mtWolf)
{
a_MaxPackSize = 8;
}
else if (m_MobType == mtGhast)
{
a_MaxPackSize = 1;
}
m_NewPack = false;
}
// Make sure we are looking at the right chunk to spawn in
a_Chunk = a_Chunk->GetRelNeighborChunkAdjustCoords(a_RelX, a_RelZ);
if ((m_AllowedTypes.find(m_MobType) != m_AllowedTypes.end()) && CanSpawnHere(a_Chunk, a_RelX, a_RelY, a_RelZ, m_MobType, a_Biome))
{
cMonster * newMob = cMonster::NewMonsterFromType(m_MobType);
if (newMob)
{
m_Spawned.insert(newMob);
}
toReturn = newMob;
}
return toReturn;
}
void cMobSpawner::NewPack()
{
m_NewPack = true;
}
cMobSpawner::tSpawnedContainer & cMobSpawner::getSpawned(void)
{
return m_Spawned;
}
bool cMobSpawner::CanSpawnAnything(void)
{
return !m_AllowedTypes.empty();
}