From b3d4e0fca665502b727f0088a3a20aac1b9ad073 Mon Sep 17 00:00:00 2001
From: LogicParrot <LogicParrot@users.noreply.github.com>
Date: Tue, 3 May 2016 10:48:39 +0300
Subject: Fixed death on teleportation or leaving Minecart (#3181)

---
 src/Entities/Entity.h   |  2 +-
 src/Entities/Pawn.cpp   | 18 ++++++++++++++++++
 src/Entities/Pawn.h     |  4 ++++
 src/Entities/Player.cpp | 14 +++++++++-----
 4 files changed, 32 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/Entities/Entity.h b/src/Entities/Entity.h
index b00201f3a..db9be63ad 100644
--- a/src/Entities/Entity.h
+++ b/src/Entities/Entity.h
@@ -215,7 +215,7 @@ public:
 	void SetPosY    (double a_PosY) { SetPosition({m_Position.x, a_PosY, m_Position.z}); }
 	void SetPosZ    (double a_PosZ) { SetPosition({m_Position.x, m_Position.y, a_PosZ}); }
 	void SetPosition(double a_PosX, double a_PosY, double a_PosZ) { SetPosition({a_PosX, a_PosY, a_PosZ}); }
-	void SetPosition(const Vector3d & a_Position);
+	virtual void SetPosition(const Vector3d & a_Position);
 	void SetYaw     (double a_Yaw);    // In degrees, normalizes to [-180, +180)
 	void SetPitch   (double a_Pitch);  // In degrees, normalizes to [-180, +180)
 	void SetRoll    (double a_Roll);   // In degrees, normalizes to [-180, +180)
diff --git a/src/Entities/Pawn.cpp b/src/Entities/Pawn.cpp
index 3dea74851..69c2db5e7 100644
--- a/src/Entities/Pawn.cpp
+++ b/src/Entities/Pawn.cpp
@@ -250,6 +250,24 @@ void cPawn::TargetingMe(cMonster * a_Monster)
 
 
 
+void cPawn::SetPosition(double a_PosX, double a_PosY, double a_PosZ)
+{
+	SetPosition({a_PosX, a_PosY, a_PosZ});
+}
+
+
+
+
+
+void cPawn::SetPosition(const Vector3d & a_Position)
+{
+	super::SetPosition(a_Position);
+	m_LastGroundHeight = a_Position.y;  // Prevent fall damage on teleport
+}
+
+
+
+
 
 void cPawn::HandleFalling(void)
 {
diff --git a/src/Entities/Pawn.h b/src/Entities/Pawn.h
index 05bc09e88..d6f7e052a 100644
--- a/src/Entities/Pawn.h
+++ b/src/Entities/Pawn.h
@@ -69,6 +69,10 @@ public:
 	/** Add the monster to the list of monsters targeting this pawn. (Does not check if already in list!) */
 	void TargetingMe(cMonster * a_Monster);
 
+	void SetPosition(double a_PosX, double a_PosY, double a_PosZ);
+
+	virtual void SetPosition(const Vector3d & a_Position) override;
+
 protected:
 	typedef std::map<cEntityEffect::eType, cEntityEffect *> tEffectMap;
 	tEffectMap m_EntityEffects;
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index d131699d3..a5868b528 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -2468,17 +2468,21 @@ void cPlayer::Detach()
 	int PosZ = POSZ_TOINT;
 
 	// Search for a position within an area to teleport player after detachment
-	// Position must be solid land, and occupied by a nonsolid block
+	// Position must be solid land with two air blocks above.
 	// If nothing found, player remains where they are
-	for (int x = PosX - 2; x <= (PosX + 2); ++x)
+	for (int x = PosX - 1; x <= (PosX + 1); ++x)
 	{
 		for (int y = PosY; y <= (PosY + 3); ++y)
 		{
-			for (int z = PosZ - 2; z <= (PosZ + 2); ++z)
+			for (int z = PosZ - 1; z <= (PosZ + 1); ++z)
 			{
-				if (!cBlockInfo::IsSolid(m_World->GetBlock(x, y, z)) && cBlockInfo::IsSolid(m_World->GetBlock(x, y - 1, z)))
+				if (
+					(m_World->GetBlock(x, y, z) == E_BLOCK_AIR) &&
+					(m_World->GetBlock(x, y + 1, z) == E_BLOCK_AIR) &&
+					cBlockInfo::IsSolid(m_World->GetBlock(x, y - 1, z))
+				)
 				{
-					TeleportToCoords(x, y, z);
+					TeleportToCoords(x + 0.5, y, z + 0.5);
 					return;
 				}
 			}
-- 
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