Basic elytra flight (#5124)

* Basic elytra flight Co-authored-by: 12xx12 <44411062+12xx12@users.noreply.github.com> Co-authored-by: Tiger Wang <ziwei.tiger@outlook.com>
2021-04-03 19:45:20 +02:00
parent ce6f8b3557
commit 071b7be3d4
18 changed files with 490 additions and 287 deletions
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -66,38 +66,72 @@ const int cPlayer::EATING_TICKS = 30;



+cPlayer::BodyStanceCrouching::BodyStanceCrouching(cPlayer & a_Player)
+{
+	a_Player.SetSize(0.6f, 1.65f);
+}
+
+
+
+
+
+cPlayer::BodyStanceSleeping::BodyStanceSleeping(cPlayer & a_Player)
+{
+	a_Player.SetSize(0.2f, 0.2f);
+}
+
+
+
+
+
+cPlayer::BodyStanceStanding::BodyStanceStanding(cPlayer & a_Player)
+{
+	a_Player.SetSize(0.6f, 1.8f);
+}
+
+
+
+
+
+cPlayer::BodyStanceGliding::BodyStanceGliding(cPlayer & a_Player) :
+	TicksElytraFlying(0)
+{
+	a_Player.SetSize(0.6f, 0.6f);
+}
+
+
+
+
+
 cPlayer::cPlayer(const std::shared_ptr<cClientHandle> & a_Client) :
 	Super(etPlayer, 0.6, 1.8),
-	m_bVisible(true),
+	m_BodyStance(BodyStanceStanding(*this)),
 	m_FoodLevel(MAX_FOOD_LEVEL),
 	m_FoodSaturationLevel(5.0),
 	m_FoodTickTimer(0),
 	m_FoodExhaustionLevel(0.0),
-	m_Stance(0.0),
 	m_Inventory(*this),
 	m_EnderChestContents(9, 3),
 	m_DefaultWorldPath(cRoot::Get()->GetDefaultWorld()->GetDataPath()),
 	m_GameMode(eGameMode_NotSet),
 	m_ClientHandle(a_Client),
-	m_IsFrozen(false),
 	m_NormalMaxSpeed(1.0),
 	m_SprintingMaxSpeed(1.3),
 	m_FlyingMaxSpeed(1.0),
-	m_IsCrouched(false),
-	m_IsSprinting(false),
-	m_IsFlying(false),
+	m_IsChargingBow(false),
 	m_IsFishing(false),
-	m_CanFly(false),
+	m_IsFlightCapable(false),
+	m_IsFlying(false),
+	m_IsFrozen(false),
+	m_IsTeleporting(false),
+	m_IsVisible(true),
 	m_EatingFinishTick(-1),
 	m_LifetimeTotalXp(0),
 	m_CurrentXp(0),
-	m_IsChargingBow(false),
 	m_BowCharge(0),
 	m_FloaterID(cEntity::INVALID_ID),
 	m_Team(nullptr),
-	m_bIsInBed(false),
 	m_TicksUntilNextSave(PLAYER_INVENTORY_SAVE_INTERVAL),
-	m_bIsTeleporting(false),
 	m_SkinParts(0),
 	m_MainHand(mhRight)
 {
@@ -114,26 +148,25 @@ cPlayer::cPlayer(const std::shared_ptr<cClientHandle> & a_Client) :
 	LoadFromDisk(World);

 	m_LastGroundHeight = static_cast<float>(GetPosY());
-	m_Stance = GetPosY() + 1.62;

 	if (m_GameMode == gmNotSet)
 	{
 		if (World->IsGameModeCreative())
 		{
-			m_CanFly = true;
+			m_IsFlightCapable = true;
 		}
 		if (World->IsGameModeSpectator())  // Otherwise Player will fall out of the world on join
 		{
-			m_CanFly = true;
+			m_IsFlightCapable = true;
 			m_IsFlying = true;
 		}
 	}

 	if (m_GameMode == gmSpectator)  // If player is reconnecting to the server in spectator mode
 	{
-		m_CanFly = true;
+		m_IsFlightCapable = true;
 		m_IsFlying = true;
-		m_bVisible = false;
+		m_IsVisible = false;
 	}
 }

@@ -427,6 +460,24 @@ void cPlayer::AddFoodExhaustion(double a_Exhaustion)



+bool cPlayer::IsInBed(void) const
+{
+	return std::holds_alternative<BodyStanceSleeping>(m_BodyStance);
+}
+
+
+
+
+
+bool cPlayer::IsStanding() const
+{
+	return std::holds_alternative<BodyStanceStanding>(m_BodyStance);
+}
+
+
+
+
+
 void cPlayer::TossItems(const cItems & a_Items)
 {
 	if (IsGameModeSpectator())  // Players can't toss items in spectator
@@ -445,6 +496,23 @@ void cPlayer::TossItems(const cItems & a_Items)



+void cPlayer::SetIsInBed(const bool a_GoToBed)
+{
+	if (a_GoToBed && IsStanding())
+	{
+		m_BodyStance = BodyStanceSleeping(*this);
+	}
+	else if (!a_GoToBed && IsInBed())
+	{
+		m_BodyStance = BodyStanceStanding(*this);
+		GetWorld()->BroadcastEntityAnimation(*this, 2);
+	}
+}
+
+
+
+
+
 void cPlayer::StartEating(void)
 {
 	// Set the timer:
@@ -525,11 +593,11 @@ const cSlotNums & cPlayer::GetInventoryPaintSlots(void) const

 double cPlayer::GetMaxSpeed(void) const
 {
-	if (m_IsFlying)
+	if (IsFlying())
 	{
 		return m_FlyingMaxSpeed;
 	}
-	else if (m_IsSprinting)
+	else if (IsSprinting())
 	{
 		return m_SprintingMaxSpeed;
 	}
@@ -546,7 +614,7 @@ double cPlayer::GetMaxSpeed(void) const
 void cPlayer::SetNormalMaxSpeed(double a_Speed)
 {
 	m_NormalMaxSpeed = a_Speed;
-	if (!m_IsSprinting && !m_IsFlying && !m_IsFrozen)
+	if (!IsSprinting() && !IsFlying() && !IsFrozen())
 	{
 		// If we are frozen, we do not send this yet. We send when unfreeze() is called
 		m_ClientHandle->SendPlayerMaxSpeed();
@@ -560,7 +628,7 @@ void cPlayer::SetNormalMaxSpeed(double a_Speed)
 void cPlayer::SetSprintingMaxSpeed(double a_Speed)
 {
 	m_SprintingMaxSpeed = a_Speed;
-	if (m_IsSprinting && !m_IsFlying && !m_IsFrozen)
+	if (IsSprinting() && !m_IsFlying && !m_IsFrozen)
 	{
 		// If we are frozen, we do not send this yet. We send when unfreeze() is called
 		m_ClientHandle->SendPlayerMaxSpeed();
@@ -587,21 +655,18 @@ void cPlayer::SetFlyingMaxSpeed(double a_Speed)



-void cPlayer::SetCrouch(bool a_IsCrouched)
+void cPlayer::SetCrouch(const bool a_ShouldCrouch)
 {
-	// Set the crouch status, broadcast to all visible players
-	if (a_IsCrouched == m_IsCrouched)
-	{
-		// No change
-		return;
-	}
-
-	if (a_IsCrouched)
+	if (a_ShouldCrouch && IsStanding())
 	{
+		m_BodyStance = BodyStanceCrouching(*this);
 		cRoot::Get()->GetPluginManager()->CallHookPlayerCrouched(*this);
 	}
+	else if (!a_ShouldCrouch && IsCrouched())
+	{
+		m_BodyStance = BodyStanceStanding(*this);
+	}

-	m_IsCrouched = a_IsCrouched;
 	m_World->BroadcastEntityMetadata(*this);
 }

@@ -609,16 +674,55 @@ void cPlayer::SetCrouch(bool a_IsCrouched)



-void cPlayer::SetSprint(bool a_IsSprinting)
+void cPlayer::SetElytraFlight(const bool a_ShouldElytraFly)
 {
-	if (a_IsSprinting == m_IsSprinting)
+	if (a_ShouldElytraFly && IsStanding() && !IsOnGround() && !IsInWater() && !IsRiding() && (GetEquippedChestplate().m_ItemType == E_ITEM_ELYTRA))
+	{
+		m_BodyStance = BodyStanceGliding(*this);
+	}
+	else if (!a_ShouldElytraFly && IsElytraFlying())
+	{
+		m_BodyStance = BodyStanceStanding(*this);
+	}
+
+	m_World->BroadcastEntityMetadata(*this);
+}
+
+
+
+
+
+void cPlayer::SetFlying(const bool a_ShouldFly)
+{
+	if (a_ShouldFly == m_IsFlying)
 	{
-		// No change
 		return;
 	}

-	m_IsSprinting = a_IsSprinting;
-	m_ClientHandle->SendPlayerMaxSpeed();
+	m_IsFlying = a_ShouldFly;
+	if (!m_IsFrozen)
+	{
+		// If we are frozen, we do not send this yet. We send when unfreeze() is called
+		m_ClientHandle->SendPlayerAbilities();
+	}
+}
+
+
+
+
+
+void cPlayer::SetSprint(const bool a_ShouldSprint)
+{
+	if (a_ShouldSprint && IsStanding())
+	{
+		m_BodyStance = BodyStanceSprinting();
+	}
+	else if (!a_ShouldSprint && IsSprinting())
+	{
+		m_BodyStance = BodyStanceStanding(*this);
+	}
+
+	m_World->BroadcastEntityMetadata(*this);
 }


@@ -627,12 +731,12 @@ void cPlayer::SetSprint(bool a_IsSprinting)

 void cPlayer::SetCanFly(bool a_CanFly)
 {
-	if (a_CanFly == m_CanFly)
+	if (a_CanFly == m_IsFlightCapable)
 	{
 		return;
 	}

-	m_CanFly = a_CanFly;
+	m_IsFlightCapable = a_CanFly;
 	m_ClientHandle->SendPlayerAbilities();
 }

@@ -698,25 +802,6 @@ cWorld * cPlayer::GetBedWorld()



-void cPlayer::SetFlying(bool a_IsFlying)
-{
-	if (a_IsFlying == m_IsFlying)
-	{
-		return;
-	}
-
-	m_IsFlying = a_IsFlying;
-	if (!m_IsFrozen)
-	{
-		// If we are frozen, we do not send this yet. We send when unfreeze() is called
-		m_ClientHandle->SendPlayerAbilities();
-	}
-}
-
-
-
-
-
 void cPlayer::NotifyNearbyWolves(cPawn * a_Opponent, bool a_IsPlayerInvolved)
 {
 	ASSERT(a_Opponent != nullptr);
@@ -750,7 +835,7 @@ void cPlayer::KilledBy(TakeDamageInfo & a_TDI)
 		return;  //  not dead yet =]
 	}

-	m_bVisible = false;  // So new clients don't see the player
+	m_IsVisible = false;  // So new clients don't see the player

 	// Detach player from object / entity. If the player dies, the server still says
 	// that the player is attached to the entity / object
@@ -905,7 +990,7 @@ void cPlayer::Respawn(void)

 double cPlayer::GetEyeHeight(void) const
 {
-	return m_Stance;
+	return GetEyePosition().y - GetPosY();
 }


@@ -914,7 +999,22 @@ double cPlayer::GetEyeHeight(void) const

 Vector3d cPlayer::GetEyePosition(void) const
 {
-	return Vector3d( GetPosX(), m_Stance, GetPosZ());
+	if (IsCrouched())
+	{
+		return GetPosition().addedY(1.54);
+	}
+
+	if (IsElytraFlying())
+	{
+		return GetPosition().addedY(0.4);
+	}
+
+	if (IsInBed())
+	{
+		return GetPosition().addedY(0.2);
+	}
+
+	return GetPosition().addedY(1.6);
 }


@@ -1314,7 +1414,7 @@ void cPlayer::TeleportToCoords(double a_PosX, double a_PosY, double a_PosZ)
 	{
 		SetPosition({a_PosX, a_PosY, a_PosZ});
 		FreezeInternal(GetPosition(), false);
-		m_bIsTeleporting = true;
+		m_IsTeleporting = true;

 		m_ClientHandle->SendPlayerMoveLook();
 	}
@@ -1344,6 +1444,11 @@ bool cPlayer::IsFrozen()

 void cPlayer::Unfreeze()
 {
+	if (IsElytraFlying())
+	{
+		m_World->BroadcastEntityMetadata(*this);
+	}
+
 	GetClientHandle()->SendPlayerAbilities();
 	GetClientHandle()->SendPlayerMaxSpeed();

@@ -1449,14 +1554,14 @@ void cPlayer::ForceSetSpeed(const Vector3d & a_Speed)
 void cPlayer::SetVisible(bool a_bVisible)
 {
 	// Need to Check if the player or other players are in gamemode spectator, but will break compatibility
-	if (a_bVisible && !m_bVisible)  // Make visible
+	if (a_bVisible && !m_IsVisible)  // Make visible
 	{
-		m_bVisible = true;
+		m_IsVisible = true;
 		m_World->BroadcastSpawnEntity(*this);
 	}
-	if (!a_bVisible && m_bVisible)
+	if (!a_bVisible && m_IsVisible)
 	{
-		m_bVisible = false;
+		m_IsVisible = false;
 		m_World->BroadcastDestroyEntity(*this, m_ClientHandle.get());  // Destroy on all clients
 	}
 }
@@ -1809,7 +1914,7 @@ bool cPlayer::LoadFromFile(const AString & a_FileName, cWorldPtr & a_World)

 	if (m_GameMode == eGameMode_Creative)
 	{
-		m_CanFly = true;
+		m_IsFlightCapable = true;
 	}

 	m_Inventory.LoadFromJson(Root["inventory"]);
@@ -2141,9 +2246,9 @@ bool cPlayer::IsClimbing(void) const

 void cPlayer::UpdateMovementStats(const Vector3d & a_DeltaPos, bool a_PreviousIsOnGround)
 {
-	if (m_bIsTeleporting)
+	if (m_IsTeleporting)
 	{
-		m_bIsTeleporting = false;
+		m_IsTeleporting = false;
 		return;
 	}

@@ -2599,16 +2704,19 @@ float cPlayer::GetLiquidHeightPercent(NIBBLETYPE a_Meta)

 bool cPlayer::IsInsideWater()
 {
-	BLOCKTYPE Block = m_World->GetBlock(Vector3d(GetPosX(), m_Stance, GetPosZ()).Floor());
+	BLOCKTYPE Block;
+	NIBBLETYPE Meta;
+	m_World->GetBlockTypeMeta(GetEyePosition().Floor(), Block, Meta);
+
 	if ((Block != E_BLOCK_WATER) && (Block != E_BLOCK_STATIONARY_WATER))
 	{
 		return false;
 	}
-	NIBBLETYPE Meta = GetWorld()->GetBlockMeta(Vector3d(GetPosX(), m_Stance, GetPosZ()).Floor());
+
+	const auto EyeHeight = GetEyeHeight();
 	float f = GetLiquidHeightPercent(Meta) - 0.11111111f;
-	float f1 = static_cast<float>(m_Stance + 1) - f;
-	bool flag = (m_Stance < f1);
-	return flag;
+	float f1 = static_cast<float>(EyeHeight + 1) - f;
+	return EyeHeight < f1;
 }


@@ -2742,6 +2850,16 @@ void cPlayer::AddKnownItem(const cItem & a_Item)



+void cPlayer::SetSize(const float a_Width, const float a_Height)
+{
+	m_Width = a_Width;
+	m_Height = a_Height;
+}
+
+
+
+
+
 void cPlayer::AddKnownRecipe(UInt32 a_RecipeId)
 {
 	auto Response = m_KnownRecipes.insert(a_RecipeId);
@@ -2916,6 +3034,33 @@ float cPlayer::GetEnchantmentBlastKnockbackReduction()



+bool cPlayer::IsCrouched(void) const
+{
+	return std::holds_alternative<BodyStanceCrouching>(m_BodyStance);
+}
+
+
+
+
+
+bool cPlayer::IsElytraFlying(void) const
+{
+	return std::holds_alternative<BodyStanceGliding>(m_BodyStance);
+}
+
+
+
+
+
+bool cPlayer::IsSprinting(void) const
+{
+	return std::holds_alternative<BodyStanceSprinting>(m_BodyStance);
+}
+
+
+
+
+
 void cPlayer::OnAddToWorld(cWorld & a_World)
 {
 	Super::OnAddToWorld(a_World);
@@ -3023,7 +3168,7 @@ void cPlayer::OnRemoveFromWorld(cWorld & a_World)

 void cPlayer::SpawnOn(cClientHandle & a_Client)
 {
-	if (!m_bVisible || (m_ClientHandle.get() == (&a_Client)))
+	if (!m_IsVisible || (m_ClientHandle.get() == (&a_Client)))
 	{
 		return;
 	}
@@ -3110,6 +3255,27 @@ void cPlayer::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 		m_BowCharge += 1;
 	}

+	if (IsElytraFlying())
+	{
+		// Damage elytra, once per second:
+		{
+			using namespace std::chrono_literals;
+
+			auto & TicksFlying = std::get<BodyStanceGliding>(m_BodyStance).TicksElytraFlying;
+			const auto TotalFlew = TicksFlying + a_Dt;
+			const auto Periods = static_cast<short>(TotalFlew / 1s);
+			TicksFlying = std::chrono::duration_cast<cTickTime>(TotalFlew - Periods * 1s);
+
+			UseItem(cInventory::invArmorOffset + 1, Periods);
+		}
+
+		// Check if flight is still possible:
+		if (IsOnGround() || IsInWater() || IsRiding() || (GetEquippedChestplate().m_ItemType != E_ITEM_ELYTRA))
+		{
+			SetElytraFlight(false);
+		}
+	}
+
 	BroadcastMovementUpdate(m_ClientHandle.get());

 	if (m_Health > 0)  // make sure player is alive