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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "Player.h"
#include "ArrowEntity.h"
#include "../Chunk.h"
#include "FastRandom.h"
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_HitGroundTimer(0),
m_HasTeleported(false),
m_bIsCollected(false),
m_HitBlockPos(Vector3i(0, 0, 0))
{
SetSpeed(a_Speed);
SetMass(0.1);
SetYawFromSpeed();
SetPitchFromSpeed();
LOGD("Created arrow %d with speed {%.02f, %.02f, %.02f} and rot {%.02f, %.02f}",
m_UniqueID, GetSpeedX(), GetSpeedY(), GetSpeedZ(),
GetYaw(), 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_HitGroundTimer(0),
m_HasTeleported(false),
m_bIsCollected(false),
m_HitBlockPos(0, 0, 0)
{
if (a_Player.IsGameModeCreative())
{
m_PickupState = psInCreative;
}
}
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, eBlockFace a_HitFace)
{
if (GetSpeed().EqualsEps(Vector3d(0, 0, 0), 0.0000001))
{
SetSpeed(GetLookVector().NormalizeCopy() * 0.1); // Ensure that no division by zero happens later
}
Vector3d Hit = a_HitPos;
Vector3d SinkMovement = (GetSpeed() / 800);
Hit += (SinkMovement * 0.01) / SinkMovement.Length(); // Make arrow sink into block a centimetre so it lodges (but not to far so it goes black clientside)
super::OnHitSolidBlock(Hit, a_HitFace);
Vector3i BlockHit = Hit.Floor();
int X = BlockHit.x, Y = BlockHit.y, Z = BlockHit.z;
m_HitBlockPos = Vector3i(X, Y, Z);
// Broadcast arrow hit sound
m_World->BroadcastSoundEffect("random.bowhit", X * 8, Y * 8, Z * 8, 0.5f, (float)(0.75 + ((float)((GetUniqueID() * 23) % 32)) / 64));
}
void cArrowEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos)
{
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)std::floor(GetPosX() * 8.0),
(int)std::floor(GetPosY() * 8.0),
(int)std::floor(GetPosZ() * 8.0),
0.5f,
0.75f + ((float)((GetUniqueID() * 23) % 32)) / 64.0f
);
Destroy();
}
void cArrowEntity::CollectedBy(cPlayer * a_Dest)
{
if (m_IsInGround && !m_bIsCollected && CanPickup(*a_Dest))
{
// Do not add the arrow to the inventory when the player is in creative:
if (!a_Dest->IsGameModeCreative())
{
int NumAdded = a_Dest->GetInventory().AddItem(E_ITEM_ARROW);
if (NumAdded == 0)
{
// No space in the inventory
return;
}
}
// TODO: BroadcastCollectPickup needs a cPickup, which we don't have
// m_World->BroadcastCollectPickup(*this, *a_Dest);
m_bIsCollected = true;
cFastRandom Random;
m_World->BroadcastSoundEffect(
"random.pop",
(int)std::floor(GetPosX() * 8.0),
(int)std::floor(GetPosY() * 8),
(int)std::floor(GetPosZ() * 8),
0.2F,
((Random.NextFloat(1.0F) - Random.NextFloat(1.0F)) * 0.7F + 1.0F) * 2.0F
);
}
}
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)
{
// When an arrow hits, the client doesn't think its in the ground and keeps on moving, IF BroadcastMovementUpdate() and TeleportEntity was called during flight, AT ALL
// Fix is to simply not sync with the client and send a teleport to confirm pos after arrow has stabilised (around 1 sec after landing)
// We can afford to do this because xoft's algorithm for trajectory is near perfect, so things are pretty close anyway without sync
// Besides, this seems to be what the vanilla server does, note how arrows teleport half a second after they hit to the server position
if (!m_HasTeleported) // Sent a teleport already, don't do again
{
if (m_HitGroundTimer > 500.f) // Send after half a second, could be less, but just in case
{
m_World->BroadcastTeleportEntity(*this);
m_HasTeleported = true;
}
else
{
m_HitGroundTimer += a_Dt;
}
}
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
}
}
}
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