From 9f03682258d949b3b6ddd4fedec93977dedbadde Mon Sep 17 00:00:00 2001
From: STRWarrior <niels.breuker@hotmail.nl>
Date: Thu, 29 May 2014 13:34:38 +0200
Subject: Enderman attacks a player if he's looking at him.

---
 src/Mobs/Enderman.cpp | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++
 src/Mobs/Enderman.h   |  1 +
 2 files changed, 91 insertions(+)

diff --git a/src/Mobs/Enderman.cpp b/src/Mobs/Enderman.cpp
index becc99a86..bd5ed85f1 100644
--- a/src/Mobs/Enderman.cpp
+++ b/src/Mobs/Enderman.cpp
@@ -2,6 +2,66 @@
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
 #include "Enderman.h"
+#include "../Entities/Player.h"
+
+
+
+
+///////////////////////////////////////////////////////////////////////////
+// cPlayerLookCheck
+class cPlayerLookCheck :
+	public cPlayerListCallback
+{
+public:
+	cPlayerLookCheck(Vector3d a_EndermanPos) :
+		m_EndermanPos(a_EndermanPos),
+		m_Player(NULL)
+	{
+	}
+
+	virtual bool Item(cPlayer * a_Player) override
+	{
+		// Don't check players who are in creative gamemode.
+		if (a_Player->IsGameModeCreative())
+		{
+			return false;
+		}
+		
+		Vector3d Direction = m_EndermanPos - a_Player->GetPosition();
+		
+		// Don't check players who are more then 64 blocks away.
+		if (Direction.SqrLength() > 64)
+		{
+			return false;
+		}
+		
+		// Don't check if the player has a pumpkin on his head.
+		if (a_Player->GetEquippedHelmet().m_ItemType == E_BLOCK_PUMPKIN)
+		{
+			return false;
+		}
+
+		Direction.Normalize();
+		
+		Vector3d LookVector = a_Player->GetLookVector();
+		LookVector.Normalize();
+		
+		if ((Direction - LookVector).SqrLength() > 0.02)
+		{
+			return false;
+		}
+		
+		// TODO: Don't attack the player if there is a wall between the player and the enderman.
+		m_Player = a_Player;
+		return true;
+	}
+	
+	cPlayer * GetPlayer(void) const {return m_Player;}
+	bool HasFoundPlayer(void) const {return (m_Player != NULL);}
+protected:
+	cPlayer * m_Player;
+	Vector3d m_EndermanPos;
+} ;
 
 
 
@@ -32,3 +92,33 @@ void cEnderman::GetDrops(cItems & a_Drops, cEntity * a_Killer)
 
 
 
+void cEnderman::Tick(float a_Dt, cChunk & a_Chunk)
+{
+	super::Tick(a_Dt, a_Chunk);
+	
+	if (m_Target != NULL)
+	{
+		return;
+	}
+
+	cPlayerLookCheck Callback(GetPosition());
+	if (!m_World->ForEachPlayer(Callback))
+	{
+		return;
+	}
+
+	if (!Callback.HasFoundPlayer())
+	{
+		return;
+	}
+
+	m_bIsScreaming = true;
+	m_Target = Callback.GetPlayer();
+
+	m_World->BroadcastEntityMetadata(*this);
+}
+	
+
+
+
+
diff --git a/src/Mobs/Enderman.h b/src/Mobs/Enderman.h
index 32e40e70b..be6e7bdf4 100644
--- a/src/Mobs/Enderman.h
+++ b/src/Mobs/Enderman.h
@@ -18,6 +18,7 @@ public:
 	CLASS_PROTODEF(cEnderman);
 
 	virtual void GetDrops(cItems & a_Drops, cEntity * a_Killer = NULL) override;
+	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
 
 	bool IsScreaming(void) const {return m_bIsScreaming; }
 	BLOCKTYPE GetCarriedBlock(void) const {return CarriedBlock; }
-- 
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