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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/ProjectileEntity.cpp
parentLineBlockTracer: Using the coord-based block faces. (diff)
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Diffstat (limited to 'src/Entities/ProjectileEntity.cpp')
-rw-r--r--src/Entities/ProjectileEntity.cpp743
1 files changed, 743 insertions, 0 deletions
diff --git a/src/Entities/ProjectileEntity.cpp b/src/Entities/ProjectileEntity.cpp
new file mode 100644
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+++ b/src/Entities/ProjectileEntity.cpp
@@ -0,0 +1,743 @@
+
+// ProjectileEntity.cpp
+
+// Implements the cProjectileEntity class representing the common base class for projectiles, as well as individual projectile types
+
+#include "Globals.h"
+#include "ProjectileEntity.h"
+#include "../ClientHandle.h"
+#include "Player.h"
+#include "../LineBlockTracer.h"
+#include "../BoundingBox.h"
+#include "../ChunkMap.h"
+#include "../Chunk.h"
+
+
+
+
+
+/// Converts an angle in radians into a byte representation used by the network protocol
+#define ANGLE_TO_PROTO(X) (Byte)(X * 255 / 360)
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProjectileTracerCallback:
+
+class cProjectileTracerCallback :
+ public cBlockTracer::cCallbacks
+{
+public:
+ cProjectileTracerCallback(cProjectileEntity * a_Projectile) :
+ m_Projectile(a_Projectile),
+ m_SlowdownCoeff(0.99) // Default slowdown when not in water
+ {
+ }
+
+ double GetSlowdownCoeff(void) const { return m_SlowdownCoeff; }
+
+protected:
+ cProjectileEntity * m_Projectile;
+ double m_SlowdownCoeff;
+
+ // cCallbacks overrides:
+ virtual bool OnNextBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, char a_EntryFace) override
+ {
+ /*
+ // DEBUG:
+ LOGD("Hit block %d:%d at {%d, %d, %d} face %d, %s (%s)",
+ a_BlockType, a_BlockMeta,
+ a_BlockX, a_BlockY, a_BlockZ, a_EntryFace,
+ g_BlockIsSolid[a_BlockType] ? "solid" : "non-solid",
+ ItemToString(cItem(a_BlockType, 1, a_BlockMeta)).c_str()
+ );
+ */
+
+ if (g_BlockIsSolid[a_BlockType])
+ {
+ // The projectile hit a solid block
+ // Calculate the exact hit coords:
+ cBoundingBox bb(a_BlockX, a_BlockX + 1, a_BlockY, a_BlockY + 1, a_BlockZ, a_BlockZ + 1);
+ Vector3d Line1 = m_Projectile->GetPosition();
+ Vector3d Line2 = Line1 + m_Projectile->GetSpeed();
+ double LineCoeff = 0;
+ char Face;
+ if (bb.CalcLineIntersection(Line1, Line2, LineCoeff, Face))
+ {
+ Vector3d Intersection = Line1 + m_Projectile->GetSpeed() * LineCoeff;
+ m_Projectile->OnHitSolidBlock(Intersection, Face);
+ return true;
+ }
+ else
+ {
+ LOGD("WEIRD! block tracer reports a hit, but BBox tracer doesn't. Ignoring the hit.");
+ }
+ }
+
+ // Convey some special effects from special blocks:
+ switch (a_BlockType)
+ {
+ case E_BLOCK_LAVA:
+ case E_BLOCK_STATIONARY_LAVA:
+ {
+ m_Projectile->StartBurning(30);
+ m_SlowdownCoeff = std::min(m_SlowdownCoeff, 0.9); // Slow down to 0.9* the speed each tick when moving through lava
+ break;
+ }
+ case E_BLOCK_WATER:
+ case E_BLOCK_STATIONARY_WATER:
+ {
+ m_Projectile->StopBurning();
+ m_SlowdownCoeff = std::min(m_SlowdownCoeff, 0.8); // Slow down to 0.8* the speed each tick when moving through water
+ break;
+ }
+ } // switch (a_BlockType)
+
+ // Continue tracing
+ return false;
+ }
+} ;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProjectileEntityCollisionCallback:
+
+class cProjectileEntityCollisionCallback :
+ public cEntityCallback
+{
+public:
+ cProjectileEntityCollisionCallback(cProjectileEntity * a_Projectile, const Vector3d & a_Pos, const Vector3d & a_NextPos) :
+ m_Projectile(a_Projectile),
+ m_Pos(a_Pos),
+ m_NextPos(a_NextPos),
+ m_MinCoeff(1),
+ m_HitEntity(NULL)
+ {
+ }
+
+
+ virtual bool Item(cEntity * a_Entity) override
+ {
+ if (
+ (a_Entity == m_Projectile) || // Do not check collisions with self
+ (a_Entity == m_Projectile->GetCreator()) // Do not check whoever shot the projectile
+ )
+ {
+ // TODO: Don't check creator only for the first 5 ticks
+ // so that arrows stuck in ground and dug up can hurt the player
+ return false;
+ }
+
+ cBoundingBox EntBox(a_Entity->GetPosition(), a_Entity->GetWidth() / 2, a_Entity->GetHeight());
+
+ // Instead of colliding the bounding box with another bounding box in motion, we collide an enlarged bounding box with a hairline.
+ // The results should be good enough for our purposes
+ double LineCoeff;
+ char Face;
+ EntBox.Expand(m_Projectile->GetWidth() / 2, m_Projectile->GetHeight() / 2, m_Projectile->GetWidth() / 2);
+ if (!EntBox.CalcLineIntersection(m_Pos, m_NextPos, LineCoeff, Face))
+ {
+ // No intersection whatsoever
+ return false;
+ }
+
+ // TODO: Some entities don't interact with the projectiles (pickups, falling blocks)
+ // TODO: Allow plugins to interfere about which entities can be hit
+
+ if (LineCoeff < m_MinCoeff)
+ {
+ // The entity is closer than anything we've stored so far, replace it as the potential victim
+ m_MinCoeff = LineCoeff;
+ m_HitEntity = a_Entity;
+ }
+
+ // Don't break the enumeration, we want all the entities
+ return false;
+ }
+
+ /// Returns the nearest entity that was hit, after the enumeration has been completed
+ cEntity * GetHitEntity(void) const { return m_HitEntity; }
+
+ /// Returns the line coeff where the hit was encountered, after the enumeration has been completed
+ double GetMinCoeff(void) const { return m_MinCoeff; }
+
+ /// Returns true if the callback has encountered a true hit
+ bool HasHit(void) const { return (m_MinCoeff < 1); }
+
+protected:
+ cProjectileEntity * m_Projectile;
+ const Vector3d & m_Pos;
+ const Vector3d & m_NextPos;
+ double m_MinCoeff; // The coefficient of the nearest hit on the Pos line
+
+ // Although it's bad(tm) to store entity ptrs from a callback, we can afford it here, because the entire callback
+ // is processed inside the tick thread, so the entities won't be removed in between the calls and the final processing
+ cEntity * m_HitEntity; // The nearest hit entity
+} ;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProjectileEntity:
+
+cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, double a_X, double a_Y, double a_Z, double a_Width, double a_Height) :
+ super(etProjectile, a_X, a_Y, a_Z, a_Width, a_Height),
+ m_ProjectileKind(a_Kind),
+ m_Creator(a_Creator),
+ m_IsInGround(false)
+{
+}
+
+
+
+
+
+cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, const Vector3d & a_Pos, const Vector3d & a_Speed, double a_Width, double a_Height) :
+ super(etProjectile, a_Pos.x, a_Pos.y, a_Pos.z, a_Width, a_Height),
+ m_ProjectileKind(a_Kind),
+ m_Creator(a_Creator),
+ m_IsInGround(false)
+{
+ SetSpeed(a_Speed);
+ SetRotationFromSpeed();
+ SetPitchFromSpeed();
+}
+
+
+
+
+
+cProjectileEntity * cProjectileEntity::Create(eKind a_Kind, cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d * a_Speed)
+{
+ Vector3d Speed;
+ if (a_Speed != NULL)
+ {
+ Speed = *a_Speed;
+ }
+
+ switch (a_Kind)
+ {
+ case pkArrow: return new cArrowEntity (a_Creator, a_X, a_Y, a_Z, Speed);
+ case pkEgg: return new cThrownEggEntity (a_Creator, a_X, a_Y, a_Z, Speed);
+ case pkEnderPearl: return new cThrownEnderPearlEntity(a_Creator, a_X, a_Y, a_Z, Speed);
+ case pkSnowball: return new cThrownSnowballEntity (a_Creator, a_X, a_Y, a_Z, Speed);
+ case pkGhastFireball: return new cGhastFireballEntity (a_Creator, a_X, a_Y, a_Z, Speed);
+ case pkFireCharge: return new cFireChargeEntity (a_Creator, a_X, a_Y, a_Z, Speed);
+ // TODO: the rest
+ }
+
+ LOGWARNING("%s: Unknown projectile kind: %d", __FUNCTION__, a_Kind);
+ return NULL;
+}
+
+
+
+
+
+void cProjectileEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ // Set the position based on what face was hit:
+ SetPosition(a_HitPos);
+ SetSpeed(0, 0, 0);
+
+ // DEBUG:
+ LOGD("Projectile %d: pos {%.02f, %.02f, %.02f}, hit solid block at face %d",
+ m_UniqueID,
+ a_HitPos.x, a_HitPos.y, a_HitPos.z,
+ a_HitFace
+ );
+
+ m_IsInGround = true;
+}
+
+
+
+
+
+AString cProjectileEntity::GetMCAClassName(void) const
+{
+ switch (m_ProjectileKind)
+ {
+ case pkArrow: return "Arrow";
+ case pkSnowball: return "Snowball";
+ case pkEgg: return "Egg";
+ case pkGhastFireball: return "Fireball";
+ case pkFireCharge: return "SmallFireball";
+ case pkEnderPearl: return "ThrownEnderPearl";
+ case pkExpBottle: return "ThrownExpBottle";
+ case pkSplashPotion: return "ThrownPotion";
+ case pkWitherSkull: return "WitherSkull";
+ case pkFishingFloat: return ""; // Unknown, perhaps MC doesn't save this?
+ }
+ ASSERT(!"Unhandled projectile entity kind!");
+ return "";
+}
+
+
+
+
+
+void cProjectileEntity::Tick(float a_Dt, cChunk & a_Chunk)
+{
+ super::Tick(a_Dt, a_Chunk);
+ BroadcastMovementUpdate();
+}
+
+
+
+
+
+void cProjectileEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
+{
+ if (m_IsInGround)
+ {
+ // Already-grounded projectiles don't move at all
+ return;
+ }
+
+ Vector3d PerTickSpeed = GetSpeed() / 20;
+ Vector3d Pos = GetPosition();
+
+ // Trace the tick's worth of movement as a line:
+ Vector3d NextPos = Pos + PerTickSpeed;
+ cProjectileTracerCallback TracerCallback(this);
+ if (!cLineBlockTracer::Trace(*m_World, TracerCallback, Pos, NextPos))
+ {
+ // Something has been hit, abort all other processing
+ return;
+ }
+ // The tracer also checks the blocks for slowdown blocks - water and lava - and stores it for later in its SlowdownCoeff
+
+ // Test for entity collisions:
+ cProjectileEntityCollisionCallback EntityCollisionCallback(this, Pos, NextPos);
+ a_Chunk.ForEachEntity(EntityCollisionCallback);
+ if (EntityCollisionCallback.HasHit())
+ {
+ // An entity was hit:
+ Vector3d HitPos = Pos + (NextPos - Pos) * EntityCollisionCallback.GetMinCoeff();
+
+ // DEBUG:
+ LOGD("Projectile %d has hit an entity %d (%s) at {%.02f, %.02f, %.02f} (coeff %.03f)",
+ m_UniqueID,
+ EntityCollisionCallback.GetHitEntity()->GetUniqueID(),
+ EntityCollisionCallback.GetHitEntity()->GetClass(),
+ HitPos.x, HitPos.y, HitPos.z,
+ EntityCollisionCallback.GetMinCoeff()
+ );
+
+ OnHitEntity(*(EntityCollisionCallback.GetHitEntity()), HitPos);
+ }
+ // TODO: Test the entities in the neighboring chunks, too
+
+ // Update the position:
+ SetPosition(NextPos);
+
+ // Add slowdown and gravity effect to the speed:
+ Vector3d NewSpeed(GetSpeed());
+ NewSpeed.y += m_Gravity / 20;
+ NewSpeed *= TracerCallback.GetSlowdownCoeff();
+ SetSpeed(NewSpeed);
+ SetRotationFromSpeed();
+ SetPitchFromSpeed();
+
+ // DEBUG:
+ LOGD("Projectile %d: pos {%.02f, %.02f, %.02f}, speed {%.02f, %.02f, %.02f}, rot {%.02f, %.02f}",
+ m_UniqueID,
+ GetPosX(), GetPosY(), GetPosZ(),
+ GetSpeedX(), GetSpeedY(), GetSpeedZ(),
+ GetRotation(), GetPitch()
+ );
+}
+
+
+
+
+
+void cProjectileEntity::SpawnOn(cClientHandle & a_Client)
+{
+ // Default spawning - use the projectile kind to spawn an object:
+ a_Client.SendSpawnObject(*this, m_ProjectileKind, 12, ANGLE_TO_PROTO(GetRotation()), ANGLE_TO_PROTO(GetPitch()));
+ a_Client.SendEntityMetadata(*this);
+}
+
+
+
+
+
+void cProjectileEntity::CollectedBy(cPlayer * a_Dest)
+{
+ // Overriden in arrow
+ UNUSED(a_Dest);
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cArrowEntity:
+
+cArrowEntity::cArrowEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+ super(pkArrow, a_Creator, a_X, a_Y, a_Z, 0.5, 0.5),
+ m_PickupState(psNoPickup),
+ m_DamageCoeff(2),
+ m_IsCritical(false),
+ m_Timer(0),
+ m_bIsCollected(false),
+ m_HitBlockPos(Vector3i(0, 0, 0))
+{
+ SetSpeed(a_Speed);
+ SetMass(0.1);
+ SetRotationFromSpeed();
+ SetPitchFromSpeed();
+ LOGD("Created arrow %d with speed {%.02f, %.02f, %.02f} and rot {%.02f, %.02f}",
+ m_UniqueID, GetSpeedX(), GetSpeedY(), GetSpeedZ(),
+ GetRotation(), GetPitch()
+ );
+}
+
+
+
+
+
+cArrowEntity::cArrowEntity(cPlayer & a_Player, double a_Force) :
+ super(pkArrow, &a_Player, a_Player.GetThrowStartPos(), a_Player.GetThrowSpeed(a_Force * 1.5 * 20), 0.5, 0.5),
+ m_PickupState(psInSurvivalOrCreative),
+ m_DamageCoeff(2),
+ m_IsCritical((a_Force >= 1)),
+ m_Timer(0),
+ m_bIsCollected(false),
+ m_HitBlockPos(0, 0, 0)
+{
+}
+
+
+
+
+
+bool cArrowEntity::CanPickup(const cPlayer & a_Player) const
+{
+ switch (m_PickupState)
+ {
+ case psNoPickup: return false;
+ case psInSurvivalOrCreative: return (a_Player.IsGameModeSurvival() || a_Player.IsGameModeCreative());
+ case psInCreative: return a_Player.IsGameModeCreative();
+ }
+ ASSERT(!"Unhandled pickup state");
+ return false;
+}
+
+
+
+
+
+void cArrowEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ if (a_HitFace == BLOCK_FACE_NONE)
+ {
+ return;
+ }
+
+ super::OnHitSolidBlock(a_HitPos, a_HitFace);
+ int a_X = (int)a_HitPos.x, a_Y = (int)a_HitPos.y, a_Z = (int)a_HitPos.z;
+
+ if (a_HitFace != BLOCK_FACE_YP)
+ {
+ AddFaceDirection(a_X, a_Y, a_Z, a_HitFace);
+ }
+ else if (a_HitFace == BLOCK_FACE_YP) // These conditions because xoft got a little confused on block face directions, so AddFace works with all but YP & YM
+ {
+ a_Y--;
+ }
+ else
+ {
+ a_Y++;
+ }
+
+ m_HitBlockPos = Vector3i(a_X, a_Y, a_Z);
+
+ // Broadcast arrow hit sound
+ m_World->BroadcastSoundEffect("random.bowhit", (int)GetPosX() * 8, (int)GetPosY() * 8, (int)GetPosZ() * 8, 0.5, (float)(0.75 + ((float)((GetUniqueID() * 23) % 32)) / 64));
+
+ // Broadcast the position and speed packets before teleporting:
+ BroadcastMovementUpdate();
+
+ // Teleport the entity to the exact hit coords:
+ m_World->BroadcastTeleportEntity(*this);
+}
+
+
+
+
+
+void cArrowEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos)
+{
+ if (!a_EntityHit.IsMob() && !a_EntityHit.IsMinecart() && !a_EntityHit.IsPlayer() && !a_EntityHit.IsBoat())
+ {
+ // Not an entity that interacts with an arrow
+ return;
+ }
+
+ int Damage = (int)(GetSpeed().Length() / 20 * m_DamageCoeff + 0.5);
+ if (m_IsCritical)
+ {
+ Damage += m_World->GetTickRandomNumber(Damage / 2 + 2);
+ }
+ a_EntityHit.TakeDamage(dtRangedAttack, this, Damage, 1);
+
+ // Broadcast successful hit sound
+ m_World->BroadcastSoundEffect("random.successful_hit", (int)GetPosX() * 8, (int)GetPosY() * 8, (int)GetPosZ() * 8, 0.5, (float)(0.75 + ((float)((GetUniqueID() * 23) % 32)) / 64));
+
+ Destroy();
+}
+
+
+
+
+
+void cArrowEntity::CollectedBy(cPlayer * a_Dest)
+{
+ if ((m_IsInGround) && (!m_bIsCollected) && (CanPickup(*a_Dest)))
+ {
+ int NumAdded = a_Dest->GetInventory().AddItem(E_ITEM_ARROW);
+ if (NumAdded > 0) // Only play effects if there was space in inventory
+ {
+ m_World->BroadcastCollectPickup((const cPickup &)*this, *a_Dest);
+ // Also send the "pop" sound effect with a somewhat random pitch (fast-random using EntityID ;)
+ m_World->BroadcastSoundEffect("random.pop", (int)GetPosX() * 8, (int)GetPosY() * 8, (int)GetPosZ() * 8, 0.5, (float)(0.75 + ((float)((GetUniqueID() * 23) % 32)) / 64));
+ m_bIsCollected = true;
+ }
+ }
+}
+
+
+
+
+
+void cArrowEntity::Tick(float a_Dt, cChunk & a_Chunk)
+{
+ super::Tick(a_Dt, a_Chunk);
+ m_Timer += a_Dt;
+
+ if (m_bIsCollected)
+ {
+ if (m_Timer > 500.f) // 0.5 seconds
+ {
+ Destroy();
+ return;
+ }
+ }
+ else if (m_Timer > 1000 * 60 * 5) // 5 minutes
+ {
+ Destroy();
+ return;
+ }
+
+ if (m_IsInGround)
+ {
+ int RelPosX = m_HitBlockPos.x - a_Chunk.GetPosX() * cChunkDef::Width;
+ int RelPosZ = m_HitBlockPos.z - a_Chunk.GetPosZ() * cChunkDef::Width;
+ cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);
+
+ if (Chunk == NULL)
+ {
+ // Inside an unloaded chunk, abort
+ return;
+ }
+
+ if (Chunk->GetBlock(RelPosX, m_HitBlockPos.y, RelPosZ) == E_BLOCK_AIR) // Block attached to was destroyed?
+ {
+ m_IsInGround = false; // Yes, begin simulating physics again
+ }
+ }
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cThrownEggEntity:
+
+cThrownEggEntity::cThrownEggEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+ super(pkEgg, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25)
+{
+ SetSpeed(a_Speed);
+}
+
+
+
+
+
+void cThrownEggEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ if (m_World->GetTickRandomNumber(7) == 1)
+ {
+ m_World->SpawnMob(a_HitPos.x, a_HitPos.y, a_HitPos.z, cMonster::mtChicken);
+ }
+ else if (m_World->GetTickRandomNumber(32) == 1)
+ {
+ m_World->SpawnMob(a_HitPos.x, a_HitPos.y, a_HitPos.z, cMonster::mtChicken);
+ m_World->SpawnMob(a_HitPos.x, a_HitPos.y, a_HitPos.z, cMonster::mtChicken);
+ m_World->SpawnMob(a_HitPos.x, a_HitPos.y, a_HitPos.z, cMonster::mtChicken);
+ m_World->SpawnMob(a_HitPos.x, a_HitPos.y, a_HitPos.z, cMonster::mtChicken);
+ }
+ Destroy();
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cThrownEnderPearlEntity :
+
+cThrownEnderPearlEntity::cThrownEnderPearlEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+ super(pkEnderPearl, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25)
+{
+ SetSpeed(a_Speed);
+}
+
+
+
+
+
+void cThrownEnderPearlEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ // Teleport the creator here, make them take 5 damage:
+ if (m_Creator != NULL)
+ {
+ // TODO: The coords might need some tweaking based on the block face
+ m_Creator->TeleportToCoords(a_HitPos.x + 0.5, a_HitPos.y + 1.7, a_HitPos.z + 0.5);
+ m_Creator->TakeDamage(dtEnderPearl, this, 5, 0);
+ }
+
+ Destroy();
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cThrownSnowballEntity :
+
+cThrownSnowballEntity::cThrownSnowballEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+ super(pkSnowball, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25)
+{
+ SetSpeed(a_Speed);
+}
+
+
+
+
+
+void cThrownSnowballEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ // TODO: Apply damage to certain mobs (blaze etc.) and anger all mobs
+
+ Destroy();
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cGhastFireballEntity :
+
+cGhastFireballEntity::cGhastFireballEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+ super(pkGhastFireball, a_Creator, a_X, a_Y, a_Z, 1, 1)
+{
+ SetSpeed(a_Speed);
+ SetGravity(0);
+}
+
+
+
+
+
+void cGhastFireballEntity::Explode(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+ m_World->DoExplosionAt(1, a_BlockX, a_BlockY, a_BlockZ, true, esGhastFireball, this);
+}
+
+
+
+
+
+void cGhastFireballEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ Destroy();
+ Explode((int)floor(a_HitPos.x), (int)floor(a_HitPos.y), (int)floor(a_HitPos.z));
+}
+
+
+
+
+
+void cGhastFireballEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos)
+{
+ Destroy();
+ Explode((int)floor(a_HitPos.x), (int)floor(a_HitPos.y), (int)floor(a_HitPos.z));
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cFireChargeEntity :
+
+cFireChargeEntity::cFireChargeEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+ super(pkFireCharge, a_Creator, a_X, a_Y, a_Z, 0.3125, 0.3125)
+{
+ SetSpeed(a_Speed);
+ SetGravity(0);
+}
+
+
+
+
+
+void cFireChargeEntity::Explode(int a_BlockX, int a_BlockY, int a_BlockZ)
+{
+ if (m_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) == E_BLOCK_AIR)
+ {
+ m_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_FIRE, 1);
+ }
+}
+
+
+
+
+
+void cFireChargeEntity::OnHitSolidBlock(const Vector3d & a_HitPos, char a_HitFace)
+{
+ Destroy();
+ Explode((int)floor(a_HitPos.x), (int)floor(a_HitPos.y), (int)floor(a_HitPos.z));
+}
+
+
+
+
+
+void cFireChargeEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos)
+{
+ Destroy();
+ Explode((int)floor(a_HitPos.x), (int)floor(a_HitPos.y), (int)floor(a_HitPos.z));
+
+ // TODO: Some entities are immune to hits
+ a_EntityHit.StartBurning(5 * 20); // 5 seconds of burning
+}
+
+
+
+