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authorAlexander Harkness <bearbin@gmail.com>2013-11-24 15:19:41 +0100
committerAlexander Harkness <bearbin@gmail.com>2013-11-24 15:19:41 +0100
commit675b4aa878f16291ce33fced48a2bc7425f635ae (patch)
tree409914df27a98f65adf866da669429c4de141b6f /src/Entities/Entity.cpp
parentLineBlockTracer: Using the coord-based block faces. (diff)
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Diffstat (limited to 'src/Entities/Entity.cpp')
-rw-r--r--src/Entities/Entity.cpp1450
1 files changed, 1450 insertions, 0 deletions
diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
new file mode 100644
index 000000000..3bea7bc01
--- /dev/null
+++ b/src/Entities/Entity.cpp
@@ -0,0 +1,1450 @@
+#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "Entity.h"
+#include "../World.h"
+#include "../Server.h"
+#include "../Root.h"
+#include "../Vector3d.h"
+#include "../Matrix4f.h"
+#include "../ReferenceManager.h"
+#include "../ClientHandle.h"
+#include "../Chunk.h"
+#include "../Simulator/FluidSimulator.h"
+#include "../PluginManager.h"
+#include "../Tracer.h"
+#include "Minecart.h"
+
+
+
+
+
+int cEntity::m_EntityCount = 0;
+cCriticalSection cEntity::m_CSCount;
+
+
+
+
+
+cEntity::cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, double a_Width, double a_Height)
+ : m_UniqueID(0)
+ , m_Health(1)
+ , m_MaxHealth(1)
+ , m_AttachedTo(NULL)
+ , m_Attachee(NULL)
+ , m_Referencers(new cReferenceManager(cReferenceManager::RFMNGR_REFERENCERS))
+ , m_References(new cReferenceManager(cReferenceManager::RFMNGR_REFERENCES))
+ , m_HeadYaw( 0.0 )
+ , m_Rot(0.0, 0.0, 0.0)
+ , m_Pos(a_X, a_Y, a_Z)
+ , m_Mass (0.001) //Default 1g
+ , m_bDirtyHead(true)
+ , m_bDirtyOrientation(true)
+ , m_bDirtyPosition(true)
+ , m_bDirtySpeed(true)
+ , m_bOnGround( false )
+ , m_Gravity( -9.81f )
+ , m_IsInitialized(false)
+ , m_LastPosX( 0.0 )
+ , m_LastPosY( 0.0 )
+ , m_LastPosZ( 0.0 )
+ , m_TimeLastTeleportPacket(0)
+ , m_TimeLastMoveReltPacket(0)
+ , m_TimeLastSpeedPacket(0)
+ , m_EntityType(a_EntityType)
+ , m_World(NULL)
+ , m_TicksSinceLastBurnDamage(0)
+ , m_TicksSinceLastLavaDamage(0)
+ , m_TicksSinceLastFireDamage(0)
+ , m_TicksSinceLastVoidDamage(0)
+ , m_TicksLeftBurning(0)
+ , m_WaterSpeed(0, 0, 0)
+ , m_Width(a_Width)
+ , m_Height(a_Height)
+{
+ cCSLock Lock(m_CSCount);
+ m_EntityCount++;
+ m_UniqueID = m_EntityCount;
+}
+
+
+
+
+
+cEntity::~cEntity()
+{
+ ASSERT(!m_World->HasEntity(m_UniqueID)); // Before deleting, the entity needs to have been removed from the world
+
+ LOGD("Deleting entity %d at pos {%.2f, %.2f, %.2f} ~ [%d, %d]; ptr %p",
+ m_UniqueID,
+ m_Pos.x, m_Pos.y, m_Pos.z,
+ (int)(m_Pos.x / cChunkDef::Width), (int)(m_Pos.z / cChunkDef::Width),
+ this
+ );
+
+ if (m_AttachedTo != NULL)
+ {
+ Detach();
+ }
+ if (m_Attachee != NULL)
+ {
+ m_Attachee->Detach();
+ }
+
+ if (m_IsInitialized)
+ {
+ LOGWARNING("ERROR: Entity deallocated without being destroyed");
+ ASSERT(!"Entity deallocated without being destroyed or unlinked");
+ }
+ delete m_Referencers;
+ delete m_References;
+}
+
+
+
+
+
+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(cWorld * a_World)
+{
+ if (cPluginManager::Get()->CallHookSpawningEntity(*a_World, *this))
+ {
+ return false;
+ }
+
+ LOGD("Initializing entity #%d (%s) at {%.02f, %.02f, %.02f}",
+ m_UniqueID, GetClass(), m_Pos.x, m_Pos.y, m_Pos.z
+ );
+ m_IsInitialized = true;
+ m_World = a_World;
+ m_World->AddEntity(this);
+
+ cPluginManager::Get()->CallHookSpawnedEntity(*a_World, *this);
+
+ // Spawn the entity on the clients:
+ a_World->BroadcastSpawnEntity(*this);
+
+ return true;
+}
+
+
+
+
+
+void cEntity::WrapHeadYaw(void)
+{
+ while (m_HeadYaw > 180.f) m_HeadYaw -= 360.f; // Wrap it
+ while (m_HeadYaw < -180.f) m_HeadYaw += 360.f;
+}
+
+
+
+
+
+void cEntity::WrapRotation(void)
+{
+ while (m_Rot.x > 180.f) m_Rot.x -= 360.f; // Wrap it
+ while (m_Rot.x < -180.f) m_Rot.x += 360.f;
+ while (m_Rot.y > 180.f) m_Rot.y -= 360.f;
+ while (m_Rot.y < -180.f) m_Rot.y += 360.f;
+}
+
+
+
+
+void cEntity::WrapSpeed(void)
+{
+ // There shoudn't be a need for flipping the flag on because this function is called
+ // after any update, so the flag is already turned on
+ if (m_Speed.x > 78.0f) m_Speed.x = 78.0f;
+ else if (m_Speed.x < -78.0f) m_Speed.x = -78.0f;
+ if (m_Speed.y > 78.0f) m_Speed.y = 78.0f;
+ else if (m_Speed.y < -78.0f) m_Speed.y = -78.0f;
+ if (m_Speed.z > 78.0f) m_Speed.z = 78.0f;
+ else if (m_Speed.z < -78.0f) m_Speed.z = -78.0f;
+}
+
+
+
+
+
+void cEntity::Destroy(bool a_ShouldBroadcast)
+{
+ if (!m_IsInitialized)
+ {
+ return;
+ }
+
+ if (a_ShouldBroadcast)
+ {
+ m_World->BroadcastDestroyEntity(*this);
+ }
+
+ m_IsInitialized = false;
+
+ 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 FinalDamage = a_RawDamage - GetArmorCoverAgainst(a_Attacker, a_DamageType, a_RawDamage);
+ cEntity::TakeDamage(a_DamageType, a_Attacker, a_RawDamage, FinalDamage, a_KnockbackAmount);
+}
+
+
+
+
+
+void cEntity::TakeDamage(eDamageType a_DamageType, cEntity * a_Attacker, int a_RawDamage, int a_FinalDamage, double a_KnockbackAmount)
+{
+ TakeDamageInfo TDI;
+ TDI.DamageType = a_DamageType;
+ TDI.Attacker = a_Attacker;
+ TDI.RawDamage = a_RawDamage;
+ TDI.FinalDamage = a_FinalDamage;
+ Vector3d Heading;
+ Heading.x = sin(GetRotation());
+ Heading.y = 0.4; // TODO: adjust the amount of "up" knockback when testing
+ Heading.z = cos(GetRotation());
+ TDI.Knockback = Heading * a_KnockbackAmount;
+ DoTakeDamage(TDI);
+}
+
+
+
+
+
+void cEntity::SetRotationFromSpeed(void)
+{
+ const double EPS = 0.0000001;
+ if ((abs(m_Speed.x) < EPS) && (abs(m_Speed.z) < EPS))
+ {
+ // atan2() may overflow or is undefined, pick any number
+ SetRotation(0);
+ return;
+ }
+ SetRotation(atan2(m_Speed.x, m_Speed.z) * 180 / 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 ((abs(xz) < EPS) && (abs(m_Speed.y) < EPS))
+ {
+ // atan2() may overflow or is undefined, pick any number
+ SetPitch(0);
+ return;
+ }
+ SetPitch(atan2(m_Speed.y, xz) * 180 / PI);
+}
+
+
+
+
+
+void cEntity::DoTakeDamage(TakeDamageInfo & a_TDI)
+{
+ if (cRoot::Get()->GetPluginManager()->CallHookTakeDamage(*this, a_TDI))
+ {
+ return;
+ }
+
+ if (m_Health <= 0)
+ {
+ // Can't take damage if already dead
+ return;
+ }
+
+ m_Health -= (short)a_TDI.FinalDamage;
+
+ // TODO: Apply damage to armor
+
+ if (m_Health < 0)
+ {
+ m_Health = 0;
+ }
+
+ m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_HURT);
+
+ if (m_Health <= 0)
+ {
+ KilledBy(a_TDI.Attacker);
+ }
+}
+
+
+
+
+
+int cEntity::GetRawDamageAgainst(const cEntity & a_Receiver)
+{
+ // Returns the hitpoints that this pawn can deal to a_Receiver using its equipped items
+ // Ref: http://www.minecraftwiki.net/wiki/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;
+}
+
+
+
+
+
+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:
+ // Ref.: http://www.minecraftwiki.net/wiki/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 dtStarving:
+ case dtInVoid:
+ case dtPoisoning:
+ case dtPotionOfHarming:
+ case dtFalling:
+ case dtLightning:
+ {
+ return 0;
+ }
+ }
+
+ // Add up all armor points:
+ // Ref.: http://www.minecraftwiki.net/wiki/Armor#Defense_points as of 2012_12_20
+ int ArmorValue = 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; 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; 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; 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; break;
+ }
+
+ // TODO: Special armor cases, such as wool, saddles, dog's collar
+ // Ref.: http://www.minecraftwiki.net/wiki/Armor#Mob_armor as of 2012_12_20
+
+ // Now ArmorValue is in [0, 20] range, which corresponds to [0, 80%] protection. Calculate the hitpoints from that:
+ return a_Damage * (ArmorValue * 4) / 100;
+}
+
+
+
+
+
+double cEntity::GetKnockbackAmountAgainst(const cEntity & a_Receiver)
+{
+ // Returns the knockback amount that the currently equipped items would cause to a_Receiver on a hit
+
+ // TODO: Enchantments
+ return 1;
+}
+
+
+
+
+
+void cEntity::KilledBy(cEntity * a_Killer)
+{
+ m_Health = 0;
+
+ cRoot::Get()->GetPluginManager()->CallHookKilling(*this, a_Killer);
+
+ if (m_Health > 0)
+ {
+ // Plugin wants to 'unkill' the pawn. Abort
+ return;
+ }
+
+ // Drop loot:
+ cItems Drops;
+ GetDrops(Drops, a_Killer);
+ m_World->SpawnItemPickups(Drops, GetPosX(), GetPosY(), GetPosZ());
+
+ m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_DEAD);
+}
+
+
+
+
+
+void cEntity::Heal(int a_HitPoints)
+{
+ m_Health += a_HitPoints;
+ if (m_Health > m_MaxHealth)
+ {
+ m_Health = m_MaxHealth;
+ }
+}
+
+
+
+
+
+void cEntity::SetHealth(int a_Health)
+{
+ m_Health = std::max(0, std::min(m_MaxHealth, a_Health));
+}
+
+
+
+
+
+void cEntity::Tick(float a_Dt, cChunk & a_Chunk)
+{
+ if (m_AttachedTo != NULL)
+ {
+ if ((m_Pos - m_AttachedTo->GetPosition()).Length() > 0.5)
+ {
+ SetPosition(m_AttachedTo->GetPosition());
+ }
+ }
+ else
+ {
+ if (a_Chunk.IsValid())
+ {
+ HandlePhysics(a_Dt, a_Chunk);
+ }
+ }
+ if (a_Chunk.IsValid())
+ {
+ TickBurning(a_Chunk);
+ }
+ if ((a_Chunk.IsValid()) && (GetPosY() < -46))
+ {
+ TickInVoid(a_Chunk);
+ }
+ else { m_TicksSinceLastVoidDamage = 0; }
+}
+
+
+
+
+
+void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
+{
+ // TODO Add collision detection with entities.
+ a_Dt /= 1000; // Convert from msec to sec
+ Vector3d NextPos = Vector3d(GetPosX(),GetPosY(),GetPosZ());
+ Vector3d NextSpeed = Vector3d(GetSpeedX(),GetSpeedY(),GetSpeedZ());
+ int BlockX = (int) floor(NextPos.x);
+ int BlockY = (int) floor(NextPos.y);
+ int BlockZ = (int) floor(NextPos.z);
+
+ if ((BlockY >= cChunkDef::Height) || (BlockY < 0))
+ {
+ // Outside of the world
+
+ cChunk * NextChunk = a_Chunk.GetNeighborChunk(BlockX, BlockZ);
+ // See if we can commit our changes. If not, we will discard them.
+ if (NextChunk != NULL)
+ {
+ SetSpeed(NextSpeed);
+ NextPos += (NextSpeed * a_Dt);
+ SetPosition(NextPos);
+ }
+ return;
+ }
+
+ // Make sure we got the correct chunk and a valid one. No one ever knows...
+ cChunk * NextChunk = a_Chunk.GetNeighborChunk(BlockX, BlockZ);
+ if (NextChunk != NULL)
+ {
+ 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 (!g_BlockIsSolid[BlockIn]) // Making sure we are not inside a solid block
+ {
+ if (m_bOnGround) // check if it's still on the ground
+ {
+ if (!g_BlockIsSolid[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 (int 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 (!g_BlockIsSolid[GotBlock])
+ {
+ NextPos.x += gCrossCoords[i].x;
+ NextPos.z += gCrossCoords[i].z;
+ IsNoAirSurrounding = false;
+ break;
+ }
+ } // for i - gCrossCoords[]
+
+ if (IsNoAirSurrounding)
+ {
+ NextPos.y += 0.5;
+ }
+
+ m_bOnGround = true;
+
+ LOGD("Entity #%d (%s) is inside a block at {%d, %d, %d}",
+ m_UniqueID, GetClass(), BlockX, BlockY, BlockZ
+ );
+ }
+
+ if (!m_bOnGround)
+ {
+ float fallspeed;
+ if (IsBlockWater(BlockIn))
+ {
+ fallspeed = m_Gravity * a_Dt / 3; // Fall 3x slower in water.
+ }
+ else if (IsBlockRail(BlockBelow) && IsMinecart()) // Rails aren't solid, except for Minecarts
+ {
+ fallspeed = 0;
+ m_bOnGround = true;
+ }
+ else if (BlockIn == E_BLOCK_COBWEB)
+ {
+ NextSpeed.y *= 0.05; // Reduce overall falling speed
+ fallspeed = 0; // No falling.
+ }
+ else
+ {
+ // Normal gravity
+ fallspeed = m_Gravity * a_Dt;
+ }
+ NextSpeed.y += fallspeed;
+ }
+ else
+ {
+ if (IsMinecart())
+ {
+ if (!IsBlockRail(BlockBelow))
+ {
+ // Friction if minecart is off track, otherwise, Minecart.cpp handles this
+ if (NextSpeed.SqrLength() > 0.0004f)
+ {
+ NextSpeed.x *= 0.7f / (1 + a_Dt);
+ if (fabs(NextSpeed.x) < 0.05)
+ {
+ NextSpeed.x = 0;
+ }
+ NextSpeed.z *= 0.7f / (1 + a_Dt);
+ if (fabs(NextSpeed.z) < 0.05)
+ {
+ NextSpeed.z = 0;
+ }
+ }
+ }
+ }
+ else
+ {
+ // Friction for non-minecarts
+ if (NextSpeed.SqrLength() > 0.0004f)
+ {
+ NextSpeed.x *= 0.7f / (1 + a_Dt);
+ if (fabs(NextSpeed.x) < 0.05)
+ {
+ NextSpeed.x = 0;
+ }
+ NextSpeed.z *= 0.7f / (1 + a_Dt);
+ if (fabs(NextSpeed.z) < 0.05)
+ {
+ NextSpeed.z = 0;
+ }
+ }
+ }
+ }
+
+ // Adjust X and Z speed for COBWEB temporary. This speed modification should be handled inside block handlers since we
+ // might have different speed modifiers according to terrain.
+ if (BlockIn == E_BLOCK_COBWEB)
+ {
+ NextSpeed.x *= 0.25;
+ NextSpeed.z *= 0.25;
+ }
+
+ //Get water direction
+ Direction WaterDir = m_World->GetWaterSimulator()->GetFlowingDirection(BlockX, BlockY, BlockZ);
+
+ m_WaterSpeed *= 0.9f; //Reduce speed each tick
+
+ switch(WaterDir)
+ {
+ case X_PLUS:
+ m_WaterSpeed.x = 0.2f;
+ m_bOnGround = false;
+ break;
+ case X_MINUS:
+ m_WaterSpeed.x = -0.2f;
+ m_bOnGround = false;
+ break;
+ case Z_PLUS:
+ m_WaterSpeed.z = 0.2f;
+ m_bOnGround = false;
+ break;
+ case Z_MINUS:
+ m_WaterSpeed.z = -0.2f;
+ m_bOnGround = false;
+ break;
+
+ default:
+ break;
+ }
+
+ if (fabs(m_WaterSpeed.x) < 0.05)
+ {
+ m_WaterSpeed.x = 0;
+ }
+
+ if (fabs(m_WaterSpeed.z) < 0.05)
+ {
+ m_WaterSpeed.z = 0;
+ }
+
+ NextSpeed += m_WaterSpeed;
+
+ if( NextSpeed.SqrLength() > 0.f )
+ {
+ cTracer Tracer( GetWorld() );
+ int Ret = Tracer.Trace( NextPos, NextSpeed, 2 );
+ if( Ret ) // Oh noez! we hit something
+ {
+ // Set to hit position
+ if( (Tracer.RealHit - NextPos).SqrLength() <= ( NextSpeed * a_Dt ).SqrLength() )
+ {
+ if( Ret == 1 )
+ {
+ if( Tracer.HitNormal.x != 0.f ) NextSpeed.x = 0.f;
+ if( Tracer.HitNormal.y != 0.f ) NextSpeed.y = 0.f;
+ if( Tracer.HitNormal.z != 0.f ) NextSpeed.z = 0.f;
+
+ if( Tracer.HitNormal.y > 0 ) // means on ground
+ {
+ m_bOnGround = true;
+ }
+ }
+ NextPos.Set(Tracer.RealHit.x,Tracer.RealHit.y,Tracer.RealHit.z);
+ NextPos.x += Tracer.HitNormal.x * 0.3f;
+ NextPos.y += Tracer.HitNormal.y * 0.05f; // Any larger produces entity vibration-upon-the-spot
+ NextPos.z += Tracer.HitNormal.z * 0.3f;
+ }
+ else
+ {
+ NextPos += (NextSpeed * a_Dt);
+ }
+ }
+ else
+ {
+ // We didn't hit anything, so move =]
+ NextPos += (NextSpeed * a_Dt);
+ }
+ }
+ BlockX = (int) floor(NextPos.x);
+ BlockZ = (int) floor(NextPos.z);
+ NextChunk = NextChunk->GetNeighborChunk(BlockX,BlockZ);
+ // See if we can commit our changes. If not, we will discard them.
+ if (NextChunk != NULL)
+ {
+ if (NextPos.x != GetPosX()) SetPosX(NextPos.x);
+ if (NextPos.y != GetPosY()) SetPosY(NextPos.y);
+ if (NextPos.z != GetPosZ()) SetPosZ(NextPos.z);
+ if (NextSpeed.x != GetSpeedX()) SetSpeedX(NextSpeed.x);
+ if (NextSpeed.y != GetSpeedY()) SetSpeedY(NextSpeed.y);
+ if (NextSpeed.z != GetSpeedZ()) SetSpeedZ(NextSpeed.z);
+ }
+ }
+}
+
+
+
+
+
+void cEntity::TickBurning(cChunk & a_Chunk)
+{
+ // Remember the current burning state:
+ bool HasBeenBurning = (m_TicksLeftBurning > 0);
+
+ // Do the burning damage:
+ if (m_TicksLeftBurning > 0)
+ {
+ m_TicksSinceLastBurnDamage++;
+ if (m_TicksSinceLastBurnDamage >= BURN_TICKS_PER_DAMAGE)
+ {
+ TakeDamage(dtOnFire, NULL, BURN_DAMAGE, 0);
+ m_TicksSinceLastBurnDamage = 0;
+ }
+ m_TicksLeftBurning--;
+ }
+
+ // Update the burning times, based on surroundings:
+ int MinRelX = (int)floor(GetPosX() - m_Width / 2) - a_Chunk.GetPosX() * cChunkDef::Width;
+ int MaxRelX = (int)floor(GetPosX() + m_Width / 2) - a_Chunk.GetPosX() * cChunkDef::Width;
+ int MinRelZ = (int)floor(GetPosZ() - m_Width / 2) - a_Chunk.GetPosZ() * cChunkDef::Width;
+ int MaxRelZ = (int)floor(GetPosZ() + m_Width / 2) - a_Chunk.GetPosZ() * cChunkDef::Width;
+ int MinY = std::max(0, std::min(cChunkDef::Height - 1, (int)floor(GetPosY())));
+ int MaxY = std::max(0, std::min(cChunkDef::Height - 1, (int)ceil (GetPosY() + m_Height)));
+ bool HasWater = false;
+ bool HasLava = false;
+ bool HasFire = false;
+
+ for (int x = MinRelX; x <= MaxRelX; x++)
+ {
+ for (int z = MinRelZ; z <= MaxRelZ; z++)
+ {
+ int RelX = x;
+ int RelZ = z;
+ cChunk * CurChunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelX, RelZ);
+ if (CurChunk == NULL)
+ {
+ continue;
+ }
+ for (int y = MinY; y <= MaxY; y++)
+ {
+ switch (CurChunk->GetBlock(RelX, y, RelZ))
+ {
+ case E_BLOCK_FIRE:
+ {
+ HasFire = true;
+ break;
+ }
+ case E_BLOCK_LAVA:
+ case E_BLOCK_STATIONARY_LAVA:
+ {
+ HasLava = true;
+ break;
+ }
+ case E_BLOCK_STATIONARY_WATER:
+ case E_BLOCK_WATER:
+ {
+ HasWater = true;
+ break;
+ }
+ } // switch (BlockType)
+ } // for y
+ } // for z
+ } // for x
+
+ if (HasWater)
+ {
+ // Extinguish the fire
+ m_TicksLeftBurning = 0;
+ }
+
+ if (HasLava)
+ {
+ // Burn:
+ m_TicksLeftBurning = BURN_TICKS;
+
+ // Periodically damage:
+ m_TicksSinceLastLavaDamage++;
+ if (m_TicksSinceLastLavaDamage >= LAVA_TICKS_PER_DAMAGE)
+ {
+ TakeDamage(dtLavaContact, NULL, LAVA_DAMAGE, 0);
+ m_TicksSinceLastLavaDamage = 0;
+ }
+ }
+ else
+ {
+ m_TicksSinceLastLavaDamage = 0;
+ }
+
+ if (HasFire)
+ {
+ // Burn:
+ m_TicksLeftBurning = BURN_TICKS;
+
+ // Periodically damage:
+ m_TicksSinceLastFireDamage++;
+ if (m_TicksSinceLastFireDamage >= FIRE_TICKS_PER_DAMAGE)
+ {
+ TakeDamage(dtFireContact, NULL, FIRE_DAMAGE, 0);
+ m_TicksSinceLastFireDamage = 0;
+ }
+ }
+ else
+ {
+ m_TicksSinceLastFireDamage = 0;
+ }
+
+ // If just started / finished burning, notify descendants:
+ if ((m_TicksLeftBurning > 0) && !HasBeenBurning)
+ {
+ OnStartedBurning();
+ }
+ else if ((m_TicksLeftBurning <= 0) && HasBeenBurning)
+ {
+ OnFinishedBurning();
+ }
+}
+
+
+
+
+
+void cEntity::TickInVoid(cChunk & a_Chunk)
+{
+ if (m_TicksSinceLastVoidDamage == 20)
+ {
+ TakeDamage(dtInVoid, NULL, 2, 0);
+ m_TicksSinceLastVoidDamage = 0;
+ }
+ else
+ {
+ m_TicksSinceLastVoidDamage++;
+ }
+}
+
+
+
+
+
+/// Called when the entity starts burning
+void cEntity::OnStartedBurning(void)
+{
+ // Broadcast the change:
+ m_World->BroadcastEntityMetadata(*this);
+}
+
+
+
+
+
+/// Called when the entity finishes burning
+void cEntity::OnFinishedBurning(void)
+{
+ // Broadcast the change:
+ m_World->BroadcastEntityMetadata(*this);
+}
+
+
+
+
+
+/// Sets the maximum value for the health
+void cEntity::SetMaxHealth(int a_MaxHealth)
+{
+ m_MaxHealth = a_MaxHealth;
+
+ // Reset health, if too high:
+ if (m_Health > a_MaxHealth)
+ {
+ m_Health = a_MaxHealth;
+ }
+}
+
+
+
+
+
+/// Puts the entity on fire for the specified amount of ticks
+void cEntity::StartBurning(int a_TicksLeftBurning)
+{
+ if (m_TicksLeftBurning > 0)
+ {
+ // Already burning, top up the ticks left burning and bail out:
+ m_TicksLeftBurning = std::max(m_TicksLeftBurning, a_TicksLeftBurning);
+ return;
+ }
+
+ m_TicksLeftBurning = a_TicksLeftBurning;
+ OnStartedBurning();
+}
+
+
+
+
+
+/// Stops the entity from burning, resets all burning timers
+void cEntity::StopBurning(void)
+{
+ bool HasBeenBurning = (m_TicksLeftBurning > 0);
+ m_TicksLeftBurning = 0;
+ m_TicksSinceLastBurnDamage = 0;
+ m_TicksSinceLastFireDamage = 0;
+ m_TicksSinceLastLavaDamage = 0;
+
+ // Notify if the entity has stopped burning
+ if (HasBeenBurning)
+ {
+ OnFinishedBurning();
+ }
+}
+
+
+
+
+
+void cEntity::TeleportToEntity(cEntity & a_Entity)
+{
+ TeleportToCoords(a_Entity.GetPosX(), a_Entity.GetPosY(), a_Entity.GetPosZ());
+}
+
+
+
+
+
+void cEntity::TeleportToCoords(double a_PosX, double a_PosY, double a_PosZ)
+{
+ SetPosition(a_PosX, a_PosY, a_PosZ);
+ m_World->BroadcastTeleportEntity(*this);
+}
+
+
+
+
+
+void cEntity::BroadcastMovementUpdate(const cClientHandle * a_Exclude)
+{
+ //We need to keep updating the clients when there is movement or if there was a change in speed and after 2 ticks
+ if( (m_Speed.SqrLength() > 0.0004f || m_bDirtySpeed) && (m_World->GetWorldAge() - m_TimeLastSpeedPacket >= 2))
+ {
+ m_World->BroadcastEntityVelocity(*this,a_Exclude);
+ m_bDirtySpeed = false;
+ m_TimeLastSpeedPacket = m_World->GetWorldAge();
+ }
+
+ //Have to process position related packets this every two ticks
+ if (m_World->GetWorldAge() % 2 == 0)
+ {
+ int DiffX = (int) (floor(GetPosX() * 32.0) - floor(m_LastPosX * 32.0));
+ int DiffY = (int) (floor(GetPosY() * 32.0) - floor(m_LastPosY * 32.0));
+ int DiffZ = (int) (floor(GetPosZ() * 32.0) - floor(m_LastPosZ * 32.0));
+ Int64 DiffTeleportPacket = m_World->GetWorldAge() - m_TimeLastTeleportPacket;
+ // 4 blocks is max Relative So if the Diff is greater than 127 or. Send an absolute position every 20 seconds
+ if (DiffTeleportPacket >= 400 ||
+ ((DiffX > 127) || (DiffX < -128) ||
+ (DiffY > 127) || (DiffY < -128) ||
+ (DiffZ > 127) || (DiffZ < -128)))
+ {
+ //
+ m_World->BroadcastTeleportEntity(*this,a_Exclude);
+ m_TimeLastTeleportPacket = m_World->GetWorldAge();
+ m_TimeLastMoveReltPacket = m_TimeLastTeleportPacket; //Must synchronize.
+ m_LastPosX = GetPosX();
+ m_LastPosY = GetPosY();
+ m_LastPosZ = GetPosZ();
+ m_bDirtyPosition = false;
+ m_bDirtyOrientation = false;
+ }
+ else
+ {
+ Int64 DiffMoveRelPacket = m_World->GetWorldAge() - m_TimeLastMoveReltPacket;
+ //if the change is big enough.
+ if ((abs(DiffX) >= 4 || abs(DiffY) >= 4 || abs(DiffZ) >= 4 || DiffMoveRelPacket >= 60) && m_bDirtyPosition)
+ {
+ if (m_bDirtyOrientation)
+ {
+ m_World->BroadcastEntityRelMoveLook(*this, (char)DiffX, (char)DiffY, (char)DiffZ,a_Exclude);
+ m_bDirtyOrientation = false;
+ }
+ else
+ {
+ m_World->BroadcastEntityRelMove(*this, (char)DiffX, (char)DiffY, (char)DiffZ,a_Exclude);
+ }
+ m_LastPosX = GetPosX();
+ m_LastPosY = GetPosY();
+ m_LastPosZ = GetPosZ();
+ m_bDirtyPosition = false;
+ m_TimeLastMoveReltPacket = m_World->GetWorldAge();
+ }
+ else
+ {
+ if (m_bDirtyOrientation)
+ {
+ m_World->BroadcastEntityLook(*this,a_Exclude);
+ m_bDirtyOrientation = false;
+ }
+ }
+ }
+ if (m_bDirtyHead)
+ {
+ m_World->BroadcastEntityHeadLook(*this,a_Exclude);
+ m_bDirtyHead = false;
+ }
+ }
+}
+
+
+
+
+
+void cEntity::AttachTo(cEntity * a_AttachTo)
+{
+ if (m_AttachedTo == a_AttachTo)
+ {
+ // Already attached to that entity, nothing to do here
+ return;
+ }
+
+ // Detach from any previous entity:
+ Detach();
+
+ // Attach to the new entity:
+ m_AttachedTo = a_AttachTo;
+ a_AttachTo->m_Attachee = this;
+ m_World->BroadcastAttachEntity(*this, a_AttachTo);
+}
+
+
+
+
+
+void cEntity::Detach(void)
+{
+ if (m_AttachedTo == NULL)
+ {
+ // Attached to no entity, our work is done
+ return;
+ }
+ m_AttachedTo->m_Attachee = NULL;
+ m_AttachedTo = NULL;
+ m_World->BroadcastAttachEntity(*this, NULL);
+}
+
+
+
+
+
+bool cEntity::IsA(const char * a_ClassName) const
+{
+ return (strcmp(a_ClassName, "cEntity") == 0);
+}
+
+
+
+
+
+void cEntity::SetRot(const Vector3f & a_Rot)
+{
+ m_Rot = a_Rot;
+ m_bDirtyOrientation = true;
+}
+
+
+
+
+
+void cEntity::SetHeadYaw(double a_HeadYaw)
+{
+ m_HeadYaw = a_HeadYaw;
+ m_bDirtyHead = true;
+ WrapHeadYaw();
+}
+
+
+
+
+
+void cEntity::SetHeight(double a_Height)
+{
+ m_Height = a_Height;
+}
+
+
+
+
+
+void cEntity::SetMass(double a_Mass)
+{
+ if (a_Mass > 0)
+ {
+ m_Mass = a_Mass;
+ }
+ else
+ {
+ // Make sure that mass is not zero. 1g is the default because we
+ // have to choose a number. It's perfectly legal to have a mass
+ // less than 1g as long as is NOT equal or less than zero.
+ m_Mass = 0.001;
+ }
+}
+
+
+
+
+
+void cEntity::SetYaw(double a_Yaw)
+{
+ m_Rot.x = a_Yaw;
+ m_bDirtyOrientation = true;
+ WrapRotation();
+}
+
+
+
+
+
+void cEntity::SetPitch(double a_Pitch)
+{
+ m_Rot.y = a_Pitch;
+ m_bDirtyOrientation = true;
+ WrapRotation();
+}
+
+
+
+
+
+void cEntity::SetRoll(double a_Roll)
+{
+ m_Rot.z = a_Roll;
+ m_bDirtyOrientation = true;
+}
+
+
+
+
+
+void cEntity::SetSpeed(double a_SpeedX, double a_SpeedY, double a_SpeedZ)
+{
+ m_Speed.Set(a_SpeedX, a_SpeedY, a_SpeedZ);
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+void cEntity::SetSpeedX(double a_SpeedX)
+{
+ m_Speed.x = a_SpeedX;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+void cEntity::SetSpeedY(double a_SpeedY)
+{
+ m_Speed.y = a_SpeedY;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+void cEntity::SetSpeedZ(double a_SpeedZ)
+{
+ m_Speed.z = a_SpeedZ;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+
+void cEntity::SetWidth(double a_Width)
+{
+ m_Width = a_Width;
+}
+
+
+
+
+
+void cEntity::AddPosX(double a_AddPosX)
+{
+ m_Pos.x += a_AddPosX;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+void cEntity::AddPosY(double a_AddPosY)
+{
+ m_Pos.y += a_AddPosY;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+void cEntity::AddPosZ(double a_AddPosZ)
+{
+ m_Pos.z += a_AddPosZ;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+void cEntity::AddPosition(double a_AddPosX, double a_AddPosY, double a_AddPosZ)
+{
+ m_Pos.x += a_AddPosX;
+ m_Pos.y += a_AddPosY;
+ m_Pos.z += a_AddPosZ;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+void cEntity::AddSpeed(double a_AddSpeedX, double a_AddSpeedY, double a_AddSpeedZ)
+{
+ m_Speed.x += a_AddSpeedX;
+ m_Speed.y += a_AddSpeedY;
+ m_Speed.z += a_AddSpeedZ;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+
+void cEntity::AddSpeedX(double a_AddSpeedX)
+{
+ m_Speed.x += a_AddSpeedX;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+
+void cEntity::AddSpeedY(double a_AddSpeedY)
+{
+ m_Speed.y += a_AddSpeedY;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+
+void cEntity::AddSpeedZ(double a_AddSpeedZ)
+{
+ m_Speed.z += a_AddSpeedZ;
+ m_bDirtySpeed = true;
+ WrapSpeed();
+}
+
+
+
+
+
+void cEntity::SteerVehicle(float a_Forward, float a_Sideways)
+{
+ if (m_AttachedTo == NULL)
+ {
+ return;
+ }
+ if ((a_Forward != 0) || (a_Sideways != 0))
+ {
+ Vector3d LookVector = GetLookVector();
+ double AddSpeedX = LookVector.x * a_Forward + LookVector.z * a_Sideways;
+ double AddSpeedZ = LookVector.z * a_Forward - LookVector.x * a_Sideways;
+ m_AttachedTo->AddSpeed(AddSpeedX, 0, AddSpeedZ);
+ }
+}
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////
+// Get look vector (this is NOT a rotation!)
+Vector3d cEntity::GetLookVector(void) const
+{
+ Matrix4d m;
+ m.Init(Vector3f(), 0, m_Rot.x, -m_Rot.y);
+ Vector3d Look = m.Transform(Vector3d(0, 0, 1));
+ return Look;
+}
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////
+// Set position
+void cEntity::SetPosition(double a_PosX, double a_PosY, double a_PosZ)
+{
+ m_Pos.Set(a_PosX, a_PosY, a_PosZ);
+ m_bDirtyPosition = true;
+}
+
+
+
+
+
+void cEntity::SetPosX(double a_PosX)
+{
+ m_Pos.x = a_PosX;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+
+void cEntity::SetPosY(double a_PosY)
+{
+ m_Pos.y = a_PosY;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+
+void cEntity::SetPosZ(double a_PosZ)
+{
+ m_Pos.z = a_PosZ;
+ m_bDirtyPosition = true;
+}
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////
+// Reference stuffs
+void cEntity::AddReference(cEntity * & a_EntityPtr)
+{
+ m_References->AddReference(a_EntityPtr);
+ a_EntityPtr->ReferencedBy(a_EntityPtr);
+}
+
+
+
+
+
+void cEntity::ReferencedBy(cEntity * & a_EntityPtr)
+{
+ m_Referencers->AddReference(a_EntityPtr);
+}
+
+
+
+
+
+void cEntity::Dereference(cEntity * & a_EntityPtr)
+{
+ m_Referencers->Dereference(a_EntityPtr);
+}
+
+
+
+