diff --git a/source/BlockTracer.h b/source/BlockTracer.h
index 4adc61f00..6d67f1052 100644
--- a/source/BlockTracer.h
+++ b/source/BlockTracer.h
@@ -36,7 +36,7 @@ public:
 		/** Called on each block encountered along the path, including the first block (path start), if chunk data is not loaded
 		When this callback returns true, the tracing is aborted.
 		*/
-		virtual bool OnNextBlockNoData(int a_BlockX, int a_BlockY, int a_BlockZ) {}
+		virtual bool OnNextBlockNoData(int a_BlockX, int a_BlockY, int a_BlockZ) { return false; }
 		
 		/** Called when the path goes out of world, either below (a_BlockY < 0) or above (a_BlockY >= cChunkDef::Height)
 		The coords specify the exact point at which the path exited the world.
@@ -44,7 +44,7 @@ public:
 		Note that some paths can go out of the world and come back again (parabola),
 		in such a case this callback is followed by OnIntoWorld() and further OnNextBlock() calls
 		*/
-		virtual bool OnOutOfWorld(double a_BlockX, double a_BlockY, double a_BlockZ) {}
+		virtual bool OnOutOfWorld(double a_BlockX, double a_BlockY, double a_BlockZ) { return false; }
 		
 		/** Called when the path goes into the world, from either below (a_BlockY < 0) or above (a_BlockY >= cChunkDef::Height)
 		The coords specify the exact point at which the path entered the world.
@@ -52,7 +52,7 @@ public:
 		Note that some paths can go out of the world and come back again (parabola),
 		in such a case this callback is followed by further OnNextBlock() calls
 		*/
-		virtual bool OnIntoWorld(double a_BlockX, double a_BlockY, double a_BlockZ) {}
+		virtual bool OnIntoWorld(double a_BlockX, double a_BlockY, double a_BlockZ) { return false; }
 		
 		/** Called when the path is sure not to hit any more blocks.
 		Note that for some shapes this might never happen (line with constant Y)
diff --git a/source/LineBlockTracer.cpp b/source/LineBlockTracer.cpp
index c5939cb78..03464314a 100644
--- a/source/LineBlockTracer.cpp
+++ b/source/LineBlockTracer.cpp
@@ -148,8 +148,11 @@ bool cLineBlockTracer::MoveToNextBlock(void)
 	if (abs(m_DiffX) > EPS)
 	{
 		double DestX = (m_DirX > 0) ? (m_CurrentX + 1) : m_CurrentX;
-		Coeff = (m_EndX - DestX) / m_DiffX;
-		Direction = dirX;
+		Coeff = (DestX - m_StartX) / m_DiffX;
+		if (Coeff <= 1)
+		{
+			Direction = dirX;
+		}
 	}
 	if (abs(m_DiffY) > EPS)
 	{
@@ -205,8 +208,8 @@ bool cLineBlockTracer::Item(cChunk * a_Chunk)
 		{
 			BLOCKTYPE BlockType;
 			NIBBLETYPE BlockMeta;
-			int RelX = FAST_FLOOR_DIV(m_CurrentX, cChunkDef::Width);
-			int RelZ = FAST_FLOOR_DIV(m_CurrentZ, cChunkDef::Width);
+			int RelX = m_CurrentX - a_Chunk->GetPosX() * cChunkDef::Width;
+			int RelZ = m_CurrentZ - a_Chunk->GetPosZ() * cChunkDef::Width;
 			a_Chunk->GetBlockTypeMeta(RelX, m_CurrentY, RelZ, BlockType, BlockMeta);
 			if (m_Callbacks->OnNextBlock(m_CurrentX, m_CurrentY, m_CurrentZ, BlockType, BlockMeta))
 			{