From 6744738a85c60238585dcf72af211f852fd7e4c6 Mon Sep 17 00:00:00 2001
From: "madmaxoft@gmail.com"
 <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>
Date: Sat, 2 Mar 2013 19:57:09 +0000
Subject: Rewritten SandSimulator to use direct chunk access; and sand falling
 on torches now creates a pickup.

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1240 0a769ca7-a7f5-676a-18bf-c427514a06d6
---
 source/FallingBlock.cpp | 45 ++++++++++++++++++++++++++++++++++-----------
 1 file changed, 34 insertions(+), 11 deletions(-)

(limited to 'source/FallingBlock.cpp')

diff --git a/source/FallingBlock.cpp b/source/FallingBlock.cpp
index 8f0320d9b..12362009d 100644
--- a/source/FallingBlock.cpp
+++ b/source/FallingBlock.cpp
@@ -3,15 +3,17 @@
 #include "FallingBlock.h"
 #include "World.h"
 #include "ClientHandle.h"
+#include "Simulator/SandSimulator.h"
 
 
 
 
 
-cFallingBlock::cFallingBlock(const Vector3i & a_BlockPosition, BLOCKTYPE a_BlockType)
-	: super(etFallingBlock, a_BlockPosition.x + 0.5f, a_BlockPosition.y + 0.5f, a_BlockPosition.z + 0.5f)
-	, m_BlockType(a_BlockType)
-	, m_OriginalPosition(a_BlockPosition)
+cFallingBlock::cFallingBlock(const Vector3i & a_BlockPosition, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) :
+	super(etFallingBlock, a_BlockPosition.x + 0.5f, a_BlockPosition.y + 0.5f, a_BlockPosition.z + 0.5f),
+	m_BlockType(a_BlockType),
+	m_BlockMeta(a_BlockMeta),
+	m_OriginalPosition(a_BlockPosition)
 {
 }
 
@@ -21,7 +23,7 @@ cFallingBlock::cFallingBlock(const Vector3i & a_BlockPosition, BLOCKTYPE a_Block
 
 void cFallingBlock::Initialize(cWorld * a_World)
 {
-	super::Initialize( a_World );
+	super::Initialize(a_World);
 	a_World->BroadcastSpawn(*this);
 }
 
@@ -44,13 +46,34 @@ void cFallingBlock::Tick(float a_Dt, MTRand & a_TickRandom)
 	m_Speed.y -= MilliDt * 9.8f;
 	m_Pos.y += m_Speed.y * MilliDt;
 
-	// GetWorld()->BroadcastTeleportEntity(*this); // Testing position
-
-	Vector3i BlockPos( m_OriginalPosition.x, (int)(m_Pos.y - 0.5), m_OriginalPosition.z);
-	if (!IsPassable(GetWorld()->GetBlock(BlockPos)))
+	// GetWorld()->BroadcastTeleportEntity(*this);  // Test position
+	
+	int BlockX = (int)m_OriginalPosition.x;
+	int BlockY = (int)(m_Pos.y - 0.5);
+	int BlockZ = (int)m_OriginalPosition.z;
+	
+	if (BlockY < 0)
+	{
+		// Fallen out of this world, just continue falling until out of sight, then destroy:
+		if (BlockY < 100)
+		{
+			Destroy();
+		}
+		return;
+	}
+	
+	if (BlockY < cChunkDef::Height - 1)
 	{
-		Destroy();
-		GetWorld()->SetBlock(BlockPos.x, BlockPos.y + 1, BlockPos.z, m_BlockType, 0);
+		BLOCKTYPE BlockBelow = GetWorld()->GetBlock(BlockX, BlockY, BlockZ);
+		if (
+			cSandSimulator::DoesBreakFallingThrough(BlockBelow) ||  // Fallen onto a block that breaks this into pickups (e. g. half-slab)
+			!cSandSimulator::CanContinueFallThrough(BlockBelow)     // Fallen onto a solid block
+		)
+		{
+			cSandSimulator::FinishFalling(m_World, BlockX, BlockY + 1, BlockZ, m_BlockType, m_BlockMeta);
+			Destroy();
+			return;
+		}
 	}
 }
 
-- 
cgit v1.2.3