From 55aa438831b82695a5cce6d505592b421096629a Mon Sep 17 00:00:00 2001
From: scribblemaniac <connor.deptuck@gmail.com>
Date: Wed, 15 Jul 2015 22:47:51 -0600
Subject: Improved spider AI

Fixes #2335
---
 src/Mobs/Spider.cpp | 42 +++++++++++++++++++++++++++++++++++++++++-
 src/Mobs/Spider.h   |  2 ++
 src/World.h         |  1 +
 3 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/src/Mobs/Spider.cpp b/src/Mobs/Spider.cpp
index 184a1d912..a9da28750 100644
--- a/src/Mobs/Spider.cpp
+++ b/src/Mobs/Spider.cpp
@@ -3,7 +3,8 @@
 
 #include "Spider.h"
 
-
+#include "../World.h"
+#include "../Entities/Player.h"
 
 
 
@@ -33,3 +34,42 @@ void cSpider::GetDrops(cItems & a_Drops, cEntity * a_Killer)
 
 
 
+
+void cSpider::EventSeePlayer(cEntity * a_Entity)
+{
+	if (!GetWorld()->IsChunkLighted(GetChunkX(), GetChunkZ()))
+	{
+		GetWorld()->QueueLightChunk(GetChunkX(), GetChunkZ());
+		return;
+	}
+
+	if (!static_cast<cPlayer *>(a_Entity)->IsGameModeCreative() && (GetWorld()->GetBlockBlockLight(this->GetPosition()) <= 9))
+	{
+		super::EventSeePlayer(a_Entity);
+	}
+}
+
+
+
+
+
+bool cSpider::DoTakeDamage(TakeDamageInfo & a_TDI)
+{
+	if (!super::DoTakeDamage(a_TDI))
+	{
+		return false;
+	}
+
+	// If the source of the damage is not from an pawn entity, switch to idle
+	if ((a_TDI.Attacker == nullptr) || !a_TDI.Attacker->IsPawn())
+	{
+		m_EMState = IDLE;
+	}
+	else
+	{
+		// If the source of the damage is from a pawn entity, chase that entity
+		m_EMState = CHASING;
+	}
+
+	return true;
+}
diff --git a/src/Mobs/Spider.h b/src/Mobs/Spider.h
index 24134c00f..4f9df7887 100644
--- a/src/Mobs/Spider.h
+++ b/src/Mobs/Spider.h
@@ -18,6 +18,8 @@ public:
 	CLASS_PROTODEF(cSpider)
 
 	virtual void GetDrops(cItems & a_Drops, cEntity * a_Killer = nullptr) override;
+	virtual void EventSeePlayer(cEntity *) override;
+	virtual bool DoTakeDamage(TakeDamageInfo & a_TDI) override;
 } ;
 
 
diff --git a/src/World.h b/src/World.h
index aeab7bfa5..083f3f204 100644
--- a/src/World.h
+++ b/src/World.h
@@ -484,6 +484,7 @@ public:
 	BLOCKTYPE  GetBlock    (const Vector3i & a_Pos) { return GetBlock( a_Pos.x, a_Pos.y, a_Pos.z); }
 	NIBBLETYPE GetBlockMeta(const Vector3i & a_Pos) { return GetBlockMeta( a_Pos.x, a_Pos.y, a_Pos.z); }
 	void       SetBlockMeta(const Vector3i & a_Pos, NIBBLETYPE a_MetaData) { SetBlockMeta( a_Pos.x, a_Pos.y, a_Pos.z, a_MetaData); }
+	NIBBLETYPE GetBlockBlockLight(const Vector3i & a_Pos) { return GetBlockBlockLight( a_Pos.x, a_Pos.y, a_Pos.z); }
 	// tolua_end
 	
 	/** Writes the block area into the specified coords.
-- 
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