forked from cuberite/cuberite
/
Entity.cpp
2340 lines (1728 loc) · 50.6 KB
/
Entity.cpp
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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "Entity.h"
#include "Player.h"
#include "../World.h"
#include "../Root.h"
#include "../Matrix4.h"
#include "../ClientHandle.h"
#include "../Chunk.h"
#include "../Simulator/FluidSimulator.h"
#include "../Bindings/PluginManager.h"
#include "../LineBlockTracer.h"
#include "../Items/ItemHandler.h"
#include "../FastRandom.h"
#include "../NetherPortalScanner.h"
#include "../BoundingBox.h"
static UInt32 GetNextUniqueID(void)
{
static std::atomic<UInt32> counter(1);
return counter.fetch_add(1);
}
////////////////////////////////////////////////////////////////////////////////
// cEntity:
cEntity::cEntity(eEntityType a_EntityType, Vector3d a_Pos, double a_Width, double a_Height):
m_UniqueID(GetNextUniqueID()),
m_Health(1),
m_MaxHealth(1),
m_AttachedTo(nullptr),
m_Attachee(nullptr),
m_bDirtyHead(true),
m_bDirtyOrientation(true),
m_bHasSentNoSpeed(true),
m_bOnGround(false),
m_Gravity(-9.81f),
m_AirDrag(0.02f),
m_LastSentPosition(a_Pos),
m_LastPosition(a_Pos),
m_EntityType(a_EntityType),
m_World(nullptr),
m_IsFireproof(false),
m_TicksSinceLastBurnDamage(0),
m_TicksSinceLastLavaDamage(0),
m_TicksSinceLastFireDamage(0),
m_TicksLeftBurning(0),
m_TicksSinceLastVoidDamage(0),
m_IsInFire(false),
m_IsInLava(false),
m_IsInWater(false),
m_IsHeadInWater(false),
m_AirLevel(MAX_AIR_LEVEL),
m_AirTickTimer(DROWNING_TICKS),
m_TicksAlive(0),
m_IsTicking(false),
m_ParentChunk(nullptr),
m_HeadYaw(0.0),
m_Rot(0.0, 0.0, 0.0),
m_Position(a_Pos),
m_WaterSpeed(0, 0, 0),
m_Mass (0.001), // Default 1g
m_Width(a_Width),
m_Height(a_Height),
m_InvulnerableTicks(0)
{
}
cEntity::~cEntity()
{
// Before deleting, the entity needs to have been removed from the world, if ever added
ASSERT((m_World == nullptr) || !m_World->HasEntity(m_UniqueID));
ASSERT(!IsTicking());
/*
// DEBUG:
FLOGD("Deleting entity {0} at pos {1:.2f} ~ [{2}, {3}]; ptr {4}",
m_UniqueID,
m_Pos,
GetChunkX(), GetChunkZ(),
static_cast<void *>(this)
);
*/
if (m_AttachedTo != nullptr)
{
Detach();
}
if (m_Attachee != nullptr)
{
m_Attachee->Detach();
}
}
const char * cEntity::GetClass(void) const
{
return "cEntity";
}
const char * cEntity::GetClassStatic(void)
{
return "cEntity";
}
const char * cEntity::GetParentClass(void) const
{
return "";
}
bool cEntity::Initialize(OwnedEntity a_Self, cWorld & a_EntityWorld)
{
if (cPluginManager::Get()->CallHookSpawningEntity(a_EntityWorld, *this))
{
return false;
}
/*
// DEBUG:
FLOGD("Initializing entity #{0} ({1}) at {2:.02f}",
m_UniqueID, GetClass(), m_Pos
);
*/
ASSERT(m_World == nullptr);
ASSERT(GetParentChunk() == nullptr);
a_EntityWorld.AddEntity(std::move(a_Self));
ASSERT(m_World != nullptr);
cPluginManager::Get()->CallHookSpawnedEntity(a_EntityWorld, *this);
return true;
}
void cEntity::OnAddToWorld(cWorld & a_World)
{
// Spawn the entity on the clients:
m_LastSentPosition = GetPosition();
a_World.BroadcastSpawnEntity(*this);
BroadcastLeashedMobs();
}
void cEntity::OnRemoveFromWorld(cWorld & a_World)
{
RemoveAllLeashedMobs();
a_World.BroadcastDestroyEntity(*this);
}
void cEntity::WrapHeadYaw(void)
{
m_HeadYaw = NormalizeAngleDegrees(m_HeadYaw);
}
void cEntity::WrapRotation(void)
{
m_Rot.x = NormalizeAngleDegrees(m_Rot.x);
m_Rot.y = NormalizeAngleDegrees(m_Rot.y);
}
void cEntity::WrapSpeed(void)
{
m_Speed.x = Clamp(m_Speed.x, -78.0, 78.0);
m_Speed.y = Clamp(m_Speed.y, -78.0, 78.0);
m_Speed.z = Clamp(m_Speed.z, -78.0, 78.0);
}
void cEntity::SetParentChunk(cChunk * a_Chunk)
{
m_ParentChunk = a_Chunk;
}
void cEntity::Destroy()
{
SetIsTicking(false);
// Unleash leashed mobs
while (!m_LeashedMobs.empty())
{
m_LeashedMobs.front()->Unleash(true, true);
}
auto ParentChunkCoords = cChunkDef::BlockToChunk(GetPosition());
m_World->QueueTask([this, ParentChunkCoords](cWorld & a_World)
{
LOGD("Destroying entity #%i (%s) from chunk (%d, %d)",
this->GetUniqueID(), this->GetClass(),
ParentChunkCoords.m_ChunkX, ParentChunkCoords.m_ChunkZ
);
UNUSED(ParentChunkCoords); // Non Debug mode only
// Make sure that RemoveEntity returned a valid smart pointer
// Also, not storing the returned pointer means automatic destruction
VERIFY(a_World.RemoveEntity(*this));
});
Destroyed();
}
void cEntity::DestroyNoScheduling(bool a_ShouldBroadcast)
{
SetIsTicking(false);
if (a_ShouldBroadcast)
{
m_World->BroadcastDestroyEntity(*this);
}
Destroyed();
}
void cEntity::TakeDamage(cEntity & a_Attacker)
{
int RawDamage = a_Attacker.GetRawDamageAgainst(*this);
TakeDamage(dtAttack, &a_Attacker, RawDamage, a_Attacker.GetKnockbackAmountAgainst(*this));
}
void cEntity::TakeDamage(eDamageType a_DamageType, cEntity * a_Attacker, int a_RawDamage, double a_KnockbackAmount)
{
int ArmorCover = GetArmorCoverAgainst(a_Attacker, a_DamageType, a_RawDamage);
int EnchantmentCover = GetEnchantmentCoverAgainst(a_Attacker, a_DamageType, a_RawDamage);
int FinalDamage = a_RawDamage - ArmorCover - EnchantmentCover;
if ((FinalDamage == 0) && (a_RawDamage > 0))
{
// Nobody's invincible
FinalDamage = 1;
}
ApplyArmorDamage(ArmorCover);
cEntity::TakeDamage(a_DamageType, a_Attacker, a_RawDamage, static_cast<float>(FinalDamage), a_KnockbackAmount);
}
void cEntity::TakeDamage(eDamageType a_DamageType, UInt32 a_AttackerID, int a_RawDamage, double a_KnockbackAmount)
{
m_World->DoWithEntityByID(a_AttackerID, [=](cEntity & a_Attacker)
{
cPawn * Attacker;
if (a_Attacker.IsPawn())
{
Attacker = static_cast<cPawn*>(&a_Attacker);
}
else
{
Attacker = nullptr;
}
TakeDamage(a_DamageType, Attacker, a_RawDamage, a_KnockbackAmount);
return true;
}
);
}
void cEntity::TakeDamage(eDamageType a_DamageType, cEntity * a_Attacker, int a_RawDamage, float a_FinalDamage, double a_KnockbackAmount)
{
TakeDamageInfo TDI;
TDI.DamageType = a_DamageType;
if ((a_Attacker != nullptr) && a_Attacker->IsPawn())
{
TDI.Attacker = a_Attacker;
}
else
{
TDI.Attacker = nullptr;
}
TDI.RawDamage = a_RawDamage;
TDI.FinalDamage = a_FinalDamage;
Vector3d Heading(0, 0, 0);
if (a_Attacker != nullptr)
{
Heading = a_Attacker->GetLookVector();
}
int KnockbackHeight = 3;
if (IsPlayer())
{
KnockbackHeight = 8;
}
// Apply slight height to knockback
Vector3d FinalKnockback = Vector3d(Heading.x * a_KnockbackAmount, Heading.y + KnockbackHeight, Heading.z * a_KnockbackAmount);
TDI.Knockback = FinalKnockback;
DoTakeDamage(TDI);
}
void cEntity::SetYawFromSpeed(void)
{
const double EPS = 0.0000001;
if ((std::abs(m_Speed.x) < EPS) && (std::abs(m_Speed.z) < EPS))
{
// atan2() may overflow or is undefined, pick any number
SetYaw(0);
return;
}
SetYaw(atan2(m_Speed.x, m_Speed.z) * 180 / M_PI);
}
void cEntity::SetPitchFromSpeed(void)
{
const double EPS = 0.0000001;
double xz = sqrt(m_Speed.x * m_Speed.x + m_Speed.z * m_Speed.z); // Speed XZ-plane component
if ((std::abs(xz) < EPS) && (std::abs(m_Speed.y) < EPS))
{
// atan2() may overflow or is undefined, pick any number
SetPitch(0);
return;
}
SetPitch(atan2(m_Speed.y, xz) * 180 / M_PI);
}
bool cEntity::DoTakeDamage(TakeDamageInfo & a_TDI)
{
if (m_Health <= 0)
{
// Can't take damage if already dead
return false;
}
if (m_InvulnerableTicks > 0)
{
// Entity is invulnerable
return false;
}
if (cRoot::Get()->GetPluginManager()->CallHookTakeDamage(*this, a_TDI))
{
return false;
}
if ((a_TDI.Attacker != nullptr) && (a_TDI.Attacker->IsPlayer()))
{
cPlayer * Player = static_cast<cPlayer *>(a_TDI.Attacker);
Player->GetEquippedItem().GetHandler()->OnEntityAttack(Player, this);
// TODO: Better damage increase, and check for enchantments (and use magic critical instead of plain)
// IsOnGround() only is false if the player is moving downwards
// Ref: https://minecraft.gamepedia.com/Damage#Critical_Hits
if (!Player->IsOnGround())
{
if ((a_TDI.DamageType == dtAttack) || (a_TDI.DamageType == dtArrowAttack))
{
a_TDI.FinalDamage *= 1.5f; // 150% damage
m_World->BroadcastEntityAnimation(*this, 4); // Critical hit
}
}
const cEnchantments & Enchantments = Player->GetEquippedItem().m_Enchantments;
int SharpnessLevel = static_cast<int>(Enchantments.GetLevel(cEnchantments::enchSharpness));
int SmiteLevel = static_cast<int>(Enchantments.GetLevel(cEnchantments::enchSmite));
int BaneOfArthropodsLevel = static_cast<int>(Enchantments.GetLevel(cEnchantments::enchBaneOfArthropods));
if (SharpnessLevel > 0)
{
a_TDI.FinalDamage += 1.25f * SharpnessLevel;
}
else if (SmiteLevel > 0)
{
if (IsMob())
{
cMonster * Monster = static_cast<cMonster *>(this);
switch (Monster->GetMobType())
{
case mtSkeleton:
case mtZombie:
case mtWither:
case mtZombiePigman:
{
a_TDI.FinalDamage += 2.5f * SmiteLevel;
break;
}
default: break;
}
}
}
else if (BaneOfArthropodsLevel > 0)
{
if (IsMob())
{
cMonster * Monster = static_cast<cMonster *>(this);
switch (Monster->GetMobType())
{
case mtSpider:
case mtCaveSpider:
case mtSilverfish:
{
a_TDI.FinalDamage += 2.5f * BaneOfArthropodsLevel;
// The duration of the effect is a random value between 1 and 1.5 seconds at level I,
// increasing the max duration by 0.5 seconds each level
// Ref: https://minecraft.gamepedia.com/Enchanting#Bane_of_Arthropods
int Duration = 20 + GetRandomProvider().RandInt(BaneOfArthropodsLevel * 10); // Duration in ticks
Monster->AddEntityEffect(cEntityEffect::effSlowness, Duration, 4);
break;
}
default: break;
}
}
}
int FireAspectLevel = static_cast<int>(Enchantments.GetLevel(cEnchantments::enchFireAspect));
if (FireAspectLevel > 0)
{
int BurnTicks = 3;
if (FireAspectLevel > 1)
{
BurnTicks += 4 * (FireAspectLevel - 1);
}
if (!IsMob() && !IsInWater())
{
StartBurning(BurnTicks * 20);
}
else if (IsMob() && !IsInWater())
{
cMonster * Monster = static_cast<cMonster *>(this);
switch (Monster->GetMobType())
{
case mtGhast:
case mtZombiePigman:
case mtMagmaCube:
{
break;
}
default: StartBurning(BurnTicks * 20);
}
}
}
unsigned int ThornsLevel = 0;
const cItem ArmorItems[] = { GetEquippedHelmet(), GetEquippedChestplate(), GetEquippedLeggings(), GetEquippedBoots() };
for (size_t i = 0; i < ARRAYCOUNT(ArmorItems); i++)
{
const cItem & Item = ArmorItems[i];
ThornsLevel = std::max(ThornsLevel, Item.m_Enchantments.GetLevel(cEnchantments::enchThorns));
}
if (ThornsLevel > 0)
{
int Chance = static_cast<int>(ThornsLevel * 15);
auto & Random = GetRandomProvider();
if (Random.RandBool(Chance / 100.0))
{
a_TDI.Attacker->TakeDamage(dtAttack, this, 0, Random.RandReal(1.0f, 4.0f), 0);
}
}
Player->GetStatManager().AddValue(statDamageDealt, static_cast<StatValue>(floor(a_TDI.FinalDamage * 10 + 0.5)));
}
m_Health -= a_TDI.FinalDamage;
m_Health = std::max(m_Health, 0.0f);
// Add knockback:
if ((IsMob() || IsPlayer()) && (a_TDI.Attacker != nullptr))
{
SetSpeed(a_TDI.Knockback);
}
m_World->BroadcastEntityStatus(*this, esGenericHurt);
m_InvulnerableTicks = 10;
if (m_Health <= 0)
{
KilledBy(a_TDI);
if (a_TDI.Attacker != nullptr)
{
a_TDI.Attacker->Killed(this);
}
}
return true;
}
int cEntity::GetRawDamageAgainst(const cEntity & a_Receiver)
{
// Returns the hitpoints that this pawn can deal to a_Receiver using its equipped items
// Ref: https://minecraft.gamepedia.com/Damage#Dealing_damage as of 2012_12_20
switch (this->GetEquippedWeapon().m_ItemType)
{
case E_ITEM_WOODEN_SWORD: return 4;
case E_ITEM_GOLD_SWORD: return 4;
case E_ITEM_STONE_SWORD: return 5;
case E_ITEM_IRON_SWORD: return 6;
case E_ITEM_DIAMOND_SWORD: return 7;
case E_ITEM_WOODEN_AXE: return 3;
case E_ITEM_GOLD_AXE: return 3;
case E_ITEM_STONE_AXE: return 4;
case E_ITEM_IRON_AXE: return 5;
case E_ITEM_DIAMOND_AXE: return 6;
case E_ITEM_WOODEN_PICKAXE: return 2;
case E_ITEM_GOLD_PICKAXE: return 2;
case E_ITEM_STONE_PICKAXE: return 3;
case E_ITEM_IRON_PICKAXE: return 4;
case E_ITEM_DIAMOND_PICKAXE: return 5;
case E_ITEM_WOODEN_SHOVEL: return 1;
case E_ITEM_GOLD_SHOVEL: return 1;
case E_ITEM_STONE_SHOVEL: return 2;
case E_ITEM_IRON_SHOVEL: return 3;
case E_ITEM_DIAMOND_SHOVEL: return 4;
}
// All other equipped items give a damage of 1:
return 1;
}
void cEntity::ApplyArmorDamage(int DamageBlocked)
{
// cEntities don't necessarily have armor to damage.
return;
}
bool cEntity::ArmorCoversAgainst(eDamageType a_DamageType)
{
// Ref.: https://minecraft.gamepedia.com/Armor#Effects as of 2012_12_20
switch (a_DamageType)
{
case dtOnFire:
case dtSuffocating:
case dtDrowning: // TODO: This one could be a special case - in various MC versions (PC vs XBox) it is and isn't armor-protected
case dtEnderPearl:
case dtStarving:
case dtInVoid:
case dtPoisoning:
case dtWithering:
case dtPotionOfHarming:
case dtFalling:
case dtLightning:
case dtPlugin:
{
return false;
}
case dtAttack:
case dtArrowAttack:
case dtCactusContact:
case dtLavaContact:
case dtFireContact:
case dtExplosion:
{
return true;
}
}
UNREACHABLE("Unsupported damage type");
}
int cEntity::GetEnchantmentCoverAgainst(const cEntity * a_Attacker, eDamageType a_DamageType, int a_Damage)
{
int TotalEPF = 0;
const cItem ArmorItems[] = { GetEquippedHelmet(), GetEquippedChestplate(), GetEquippedLeggings(), GetEquippedBoots() };
for (size_t i = 0; i < ARRAYCOUNT(ArmorItems); i++)
{
const cItem & Item = ArmorItems[i];
if ((a_DamageType != dtInVoid) && (a_DamageType != dtAdmin) && (a_DamageType != dtStarving))
{
TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchProtection)) * 1;
}
if ((a_DamageType == dtBurning) || (a_DamageType == dtFireContact) || (a_DamageType == dtLavaContact))
{
TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchFireProtection)) * 2;
}
if ((a_DamageType == dtFalling) || (a_DamageType == dtEnderPearl))
{
TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchFeatherFalling)) * 3;
}
if (a_DamageType == dtExplosion)
{
TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchBlastProtection)) * 2;
}
// Note: Also blocks against fire charges, etc.
if (a_DamageType == dtProjectile)
{
TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchProjectileProtection)) * 2;
}
}
int CappedEPF = std::min(20, TotalEPF);
return static_cast<int>(a_Damage * CappedEPF / 25.0);
}
float cEntity::GetEnchantmentBlastKnockbackReduction()
{
UInt32 MaxLevel = 0;
const cItem ArmorItems[] = { GetEquippedHelmet(), GetEquippedChestplate(), GetEquippedLeggings(), GetEquippedBoots() };
for (auto & Item : ArmorItems)
{
UInt32 Level = Item.m_Enchantments.GetLevel(cEnchantments::enchBlastProtection);
if (Level > MaxLevel)
{
// Get max blast protection
MaxLevel = Level;
}
}
// Max blast protect level is 4, each level provide 15% knock back reduction
MaxLevel = std::min<UInt32>(MaxLevel, 4);
return MaxLevel * 0.15f;
}
int cEntity::GetArmorCoverAgainst(const cEntity * a_Attacker, eDamageType a_DamageType, int a_Damage)
{
// Returns the hitpoints out of a_RawDamage that the currently equipped armor would cover
// Filter out damage types that are not protected by armor:
if (!ArmorCoversAgainst(a_DamageType))
{
return 0;
}
// Add up all armor points:
// Ref.: https://minecraft.gamepedia.com/Armor#Defense_points
int ArmorValue = 0;
int Toughness = 0;
switch (GetEquippedHelmet().m_ItemType)
{
case E_ITEM_LEATHER_CAP: ArmorValue += 1; break;
case E_ITEM_GOLD_HELMET: ArmorValue += 2; break;
case E_ITEM_CHAIN_HELMET: ArmorValue += 2; break;
case E_ITEM_IRON_HELMET: ArmorValue += 2; break;
case E_ITEM_DIAMOND_HELMET: ArmorValue += 3; Toughness += 2; break;
}
switch (GetEquippedChestplate().m_ItemType)
{
case E_ITEM_LEATHER_TUNIC: ArmorValue += 3; break;
case E_ITEM_GOLD_CHESTPLATE: ArmorValue += 5; break;
case E_ITEM_CHAIN_CHESTPLATE: ArmorValue += 5; break;
case E_ITEM_IRON_CHESTPLATE: ArmorValue += 6; break;
case E_ITEM_DIAMOND_CHESTPLATE: ArmorValue += 8; Toughness += 2; break;
}
switch (GetEquippedLeggings().m_ItemType)
{
case E_ITEM_LEATHER_PANTS: ArmorValue += 2; break;
case E_ITEM_GOLD_LEGGINGS: ArmorValue += 3; break;
case E_ITEM_CHAIN_LEGGINGS: ArmorValue += 4; break;
case E_ITEM_IRON_LEGGINGS: ArmorValue += 5; break;
case E_ITEM_DIAMOND_LEGGINGS: ArmorValue += 6; Toughness += 2; break;
}
switch (GetEquippedBoots().m_ItemType)
{
case E_ITEM_LEATHER_BOOTS: ArmorValue += 1; break;
case E_ITEM_GOLD_BOOTS: ArmorValue += 1; break;
case E_ITEM_CHAIN_BOOTS: ArmorValue += 1; break;
case E_ITEM_IRON_BOOTS: ArmorValue += 2; break;
case E_ITEM_DIAMOND_BOOTS: ArmorValue += 3; Toughness += 2; break;
}
// TODO: Special armor cases, such as wool, saddles, dog's collar
// Ref.: https://minecraft.gamepedia.com/Armor#Mob_armor as of 2012_12_20
double Reduction = std::max(ArmorValue / 5.0, ArmorValue - a_Damage / (2 + Toughness / 4.0));
return static_cast<int>(a_Damage * std::min(20.0, Reduction) / 25.0);
}
double cEntity::GetKnockbackAmountAgainst(const cEntity & a_Receiver)
{
// Default knockback for entities
double Knockback = 10;
// If we're sprinting, bump up the knockback
if (IsSprinting())
{
Knockback = 15;
}
// Check for knockback enchantments (punch only applies to shot arrows)
unsigned int KnockbackLevel = GetEquippedWeapon().m_Enchantments.GetLevel(cEnchantments::enchKnockback);
unsigned int KnockbackLevelMultiplier = 8;
Knockback += KnockbackLevelMultiplier * KnockbackLevel;
return Knockback;
}
void cEntity::KilledBy(TakeDamageInfo & a_TDI)
{
m_Health = 0;
cRoot::Get()->GetPluginManager()->CallHookKilling(*this, a_TDI.Attacker, a_TDI);
if (m_Health > 0)
{
// Plugin wants to 'unkill' the pawn. Abort
return;
}
// If the victim is a player the hook is handled by the cPlayer class
if (!IsPlayer())
{
AString emptystring = AString("");
cRoot::Get()->GetPluginManager()->CallHookKilled(*this, a_TDI, emptystring);
}
// Drop loot:
cItems Drops;
GetDrops(Drops, a_TDI.Attacker);
m_World->SpawnItemPickups(Drops, GetPosX(), GetPosY(), GetPosZ());
m_World->BroadcastEntityStatus(*this, esGenericDead);
}
void cEntity::Heal(int a_HitPoints)
{
m_Health += a_HitPoints;
m_Health = std::min(m_Health, m_MaxHealth);
}
void cEntity::SetHealth(float a_Health)
{
m_Health = Clamp(a_Health, 0.0f, m_MaxHealth);
}
void cEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
ASSERT(IsTicking());
ASSERT(GetWorld() != nullptr);
m_TicksAlive++;
if (m_InvulnerableTicks > 0)
{
m_InvulnerableTicks--;
}
// Non-players are destroyed as soon as they fall out of the world:
if ((GetPosY() < 0) && (!IsPlayer()))
{
Destroy();
return;
}
if (m_AttachedTo != nullptr)
{
SetPosition(m_AttachedTo->GetPosition());
}
else
{
if (!a_Chunk.IsValid())
{
return;
}
// Position changed -> super::Tick() called:
GET_AND_VERIFY_CURRENT_CHUNK(NextChunk, POSX_TOINT, POSZ_TOINT);
// Set swim states (water, lava, and fire):
SetSwimState(*NextChunk);
// Handle catching on fire and burning:
TickBurning(*NextChunk);
// Damage players if they are in the void
if (GetPosY() < VOID_BOUNDARY)
{
TickInVoid(*NextChunk);
}
else
{
m_TicksSinceLastVoidDamage = 0;
}
// Handle cactus damage or destruction:
if (
IsMob() || IsPickup() ||
(IsPlayer() && !((static_cast<cPlayer *>(this))->IsGameModeCreative() || (static_cast<cPlayer *>(this))->IsGameModeSpectator()))
)
{
DetectCacti();
}
// Handle drowning:
if (IsMob() || IsPlayer())
{
HandleAir();
}
if (!DetectPortal()) // Our chunk is invalid if we have moved to another world
{
// None of the above functions changed position, we remain in the chunk of NextChunk
HandlePhysics(a_Dt, *NextChunk);
}
}
}
void cEntity::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
int BlockX = POSX_TOINT;
int BlockY = POSY_TOINT;
int BlockZ = POSZ_TOINT;
// Position changed -> super::HandlePhysics() called
GET_AND_VERIFY_CURRENT_CHUNK(NextChunk, BlockX, BlockZ);
// TODO Add collision detection with entities.
auto DtSec = std::chrono::duration_cast<std::chrono::duration<double>>(a_Dt);
Vector3d NextPos = Vector3d(GetPosX(), GetPosY(), GetPosZ());
Vector3d NextSpeed = Vector3d(GetSpeedX(), GetSpeedY(), GetSpeedZ());
if ((BlockY >= cChunkDef::Height) || (BlockY < 0))
{
// Outside of the world
AddSpeedY(m_Gravity * DtSec.count());
AddPosition(GetSpeed() * DtSec.count());
return;
}
int RelBlockX = BlockX - (NextChunk->GetPosX() * cChunkDef::Width);
int RelBlockZ = BlockZ - (NextChunk->GetPosZ() * cChunkDef::Width);
BLOCKTYPE BlockIn = NextChunk->GetBlock( RelBlockX, BlockY, RelBlockZ);
BLOCKTYPE BlockBelow = (BlockY > 0) ? NextChunk->GetBlock(RelBlockX, BlockY - 1, RelBlockZ) : E_BLOCK_AIR;
if (!cBlockInfo::IsSolid(BlockIn)) // Making sure we are not inside a solid block
{
if (m_bOnGround) // check if it's still on the ground
{
if (!cBlockInfo::IsSolid(BlockBelow)) // Check if block below is air or water.
{
m_bOnGround = false;
}
}
}
else
{
// Push out entity.
BLOCKTYPE GotBlock;
static const struct
{
int x, y, z;
} gCrossCoords[] =
{
{ 1, 0, 0},
{-1, 0, 0},
{ 0, 0, 1},
{ 0, 0, -1},
} ;
bool IsNoAirSurrounding = true;
for (size_t i = 0; i < ARRAYCOUNT(gCrossCoords); i++)
{
if (!NextChunk->UnboundedRelGetBlockType(RelBlockX + gCrossCoords[i].x, BlockY, RelBlockZ + gCrossCoords[i].z, GotBlock))
{
// The pickup is too close to an unloaded chunk, bail out of any physics handling
return;
}
if (!cBlockInfo::IsSolid(GotBlock))
{
NextPos.x += gCrossCoords[i].x;
NextPos.z += gCrossCoords[i].z;
IsNoAirSurrounding = false;
break;
}
} // for i - gCrossCoords[]