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Don't send entity velocity for boats (#4488) 

* Don't send entity velocity for boats
This commit is contained in:
Mat 2020-03-07 13:56:02 +02:00 committed by GitHub
parent 83a41c93e9
commit 5a2163d7e6
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 35 additions and 5 deletions
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29
src/Entities/Boat.cpp
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@ -39,6 +39,35 @@ void cBoat::SpawnOn(cClientHandle & a_ClientHandle)
void cBoat::BroadcastMovementUpdate(const cClientHandle * a_Exclude)
{
// Process packet sending every two ticks
if (GetWorld()->GetWorldAge() % 2 != 0)
{
return;
}
Vector3i Diff = (GetPosition() * 32.0).Floor() - (m_LastSentPosition * 32.0).Floor();
if (Diff.HasNonZeroLength()) // Have we moved?
{
if ((abs(Diff.x) <= 127) && (abs(Diff.y) <= 127) && (abs(Diff.z) <= 127)) // Limitations of a Byte
{
m_World->BroadcastEntityRelMove(*this, Vector3<Int8>(Diff), a_Exclude);
}
else
{
// Too big a movement, do a teleport
m_World->BroadcastTeleportEntity(*this, a_Exclude);
}
m_LastSentPosition = GetPosition();
}
}
bool cBoat::DoTakeDamage(TakeDamageInfo & TDI)
{
m_LastDamage = 10;

1
src/Entities/Boat.h
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@ -39,6 +39,7 @@ public:
// cEntity overrides:
virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
virtual void BroadcastMovementUpdate(const cClientHandle * a_Exclude = nullptr) override;
virtual void OnRightClicked(cPlayer & a_Player) override;
virtual bool DoTakeDamage(TakeDamageInfo & TDI) override;
virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;

2
src/Entities/Entity.cpp
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@ -44,6 +44,7 @@ cEntity::cEntity(eEntityType a_EntityType, Vector3d a_Pos, double a_Width, doubl
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),
@ -65,7 +66,6 @@ cEntity::cEntity(eEntityType a_EntityType, Vector3d a_Pos, double a_Width, doubl
m_HeadYaw(0.0),
m_Rot(0.0, 0.0, 0.0),
m_Position(a_Pos),
m_LastSentPosition(a_Pos),
m_WaterSpeed(0, 0, 0),
m_Mass (0.001), // Default 1g
m_Width(a_Width),

8
src/Entities/Entity.h
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@ -656,6 +656,10 @@ protected:
Data: https://minecraft.gamepedia.com/Entity#Motion_of_entities */
float m_AirDrag;
/** Last position sent to client via the Relative Move or Teleport packets (not Velocity)
Only updated if cEntity::BroadcastMovementUpdate() is called! */
Vector3d m_LastSentPosition;
Vector3d m_LastPosition;
eEntityType m_EntityType;
@ -752,10 +756,6 @@ private:
/** Position of the entity's XZ center and Y bottom */
Vector3d m_Position;
/** Last position sent to client via the Relative Move or Teleport packets (not Velocity)
Only updated if cEntity::BroadcastMovementUpdate() is called! */
Vector3d m_LastSentPosition;
/** Measured in meter / second */
Vector3d m_WaterSpeed;