From 9278bb732d115251776b12ebb45d0192c7fdd916 Mon Sep 17 00:00:00 2001 From: Tycho Date: Sun, 11 May 2014 15:52:02 +0100 Subject: Fixed a bug in writting zeros to a non-allocated section --- src/ChunkBuffer.cpp | 11 +++++++++++ src/ChunkBuffer.h | 12 ++++++++++++ 2 files changed, 23 insertions(+) (limited to 'src') diff --git a/src/ChunkBuffer.cpp b/src/ChunkBuffer.cpp index baeeff890..96077b966 100644 --- a/src/ChunkBuffer.cpp +++ b/src/ChunkBuffer.cpp @@ -295,3 +295,14 @@ void cChunkBuffer::Free(cChunkBuffer::sChunkSection * ptr) const +void cChunkBuffer::ZeroSection(cChunkBuffer::sChunkSection * ptr) const +{ + memset(ptr->m_BlockTypes,0x00,sizeof(ptr->m_BlockTypes)); + memset(ptr->m_BlockMeta,0x00,sizeof(ptr->m_BlockMeta)); + memset(ptr->m_BlockLight,0x00,sizeof(ptr->m_BlockLight)); + memset(ptr->m_BlockSkyLight,0x00,sizeof(ptr->m_BlockSkyLight)); +} + + + + diff --git a/src/ChunkBuffer.h b/src/ChunkBuffer.h index b1bd024d5..e16575bb2 100644 --- a/src/ChunkBuffer.h +++ b/src/ChunkBuffer.h @@ -121,12 +121,17 @@ public: int Section = a_RelY / CHUNK_SECTION_HEIGHT; if(!m_Sections[Section]) { + if(a_Block == 0x00) + { + return; + } m_Sections[Section] = Allocate(); if(!m_Sections[Section]) { ASSERT(!"Failed to allocate a new section in Chunkbuffer"); return; } + ZeroSection(m_Sections[Section]); } int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ); m_Sections[Section]->m_BlockTypes[Index] = a_Block; @@ -166,12 +171,17 @@ public: int Section = a_RelY / CHUNK_SECTION_HEIGHT; if(!m_Sections[Section]) { + if((a_Nibble & 0xf) == 0x00) + { + return; + } m_Sections[Section] = Allocate(); if(!m_Sections[Section]) { ASSERT(!"Failed to allocate a new section in Chunkbuffer"); return; } + ZeroSection(m_Sections[Section]); } int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ); m_Sections[Section]->m_BlockMeta[Index / 2] = static_cast( @@ -247,6 +257,8 @@ private: sChunkSection * Allocate() const; void Free(sChunkSection * ptr) const; + + void ZeroSection(sChunkSection * ptr) const; }; -- cgit v1.2.3