summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/ChunkBuffer.cpp147
1 files changed, 133 insertions, 14 deletions
diff --git a/src/ChunkBuffer.cpp b/src/ChunkBuffer.cpp
index 8e87d3049..7946fba1e 100644
--- a/src/ChunkBuffer.cpp
+++ b/src/ChunkBuffer.cpp
@@ -22,7 +22,7 @@ cChunkBuffer cChunkBuffer::Copy() const
void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) const
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16;
if (a_Idx > 0) a_Idx = a_Idx > length ? a_Idx - length : 0;
@@ -30,7 +30,22 @@ void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length
{
size_t tocopy = length > segment_length ? segment_length : length;
length -= tocopy;
- memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockTypes, sizeof(BLOCKTYPE) * length);
+ if(m_Sections[i])
+ {
+ memcpy(
+ &a_dest[i * segment_length],
+ &m_Sections[i]->m_BlockTypes,
+ sizeof(BLOCKTYPE) * length
+ );
+ }
+ else
+ {
+ memset(
+ &a_dest[i * segment_length],
+ 0,
+ sizeof(BLOCKTYPE) * length
+ );
+ }
}
}
}
@@ -41,10 +56,24 @@ void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length
void cChunkBuffer::CopyMeta(NIBBLETYPE * a_dest) const
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
- memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockMeta, sizeof(NIBBLETYPE) * segment_length);
+ if(m_Sections[i])
+ {
+ memcpy(
+ &a_dest[i * segment_length],
+ &m_Sections[i]->m_BlockMeta,
+ sizeof(NIBBLETYPE) * segment_length);
+ }
+ else
+ {
+ memset(
+ &a_dest[i * segment_length],
+ 0,
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
}
}
@@ -54,10 +83,25 @@ void cChunkBuffer::CopyMeta(NIBBLETYPE * a_dest) const
void cChunkBuffer::CopyLight(NIBBLETYPE * a_dest) const
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
- memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockLight, sizeof(NIBBLETYPE) * segment_length);
+ if(m_Sections[i])
+ {
+ memcpy(
+ &a_dest[i * segment_length],
+ &m_Sections[i]->m_BlockLight,
+ sizeof(NIBBLETYPE) * segment_length
+ );
+ }
+ else
+ {
+ memset(
+ &a_dest[i * segment_length],
+ 0,
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
}
}
@@ -67,10 +111,25 @@ void cChunkBuffer::CopyLight(NIBBLETYPE * a_dest) const
void cChunkBuffer::CopySkyLight(NIBBLETYPE * a_dest) const
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
- memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockSkyLight, sizeof(NIBBLETYPE) * segment_length);
+ if(m_Sections[i])
+ {
+ memcpy(
+ &a_dest[i * segment_length],
+ &m_Sections[i]->m_BlockSkyLight,
+ sizeof(NIBBLETYPE) * segment_length
+ );
+ }
+ else
+ {
+ memset(
+ &a_dest[i * segment_length],
+ 0xFF,
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
}
}
@@ -80,13 +139,28 @@ void cChunkBuffer::CopySkyLight(NIBBLETYPE * a_dest) const
void cChunkBuffer::SetBlocks(const BLOCKTYPE * a_src)
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i])
{
memcpy(&m_Sections[i]->m_BlockTypes, &a_src[i * segment_length], sizeof(BLOCKTYPE) * segment_length);
}
+ else
+ {
+ size_t j = 0;
+ // do nothing whilst 0
+ for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
+ if (j != segment_length)
+ {
+ m_Sections[i] = Allocate();
+ memcpy(
+ &m_Sections[i]->m_BlockTypes,
+ &a_src[i * segment_length],
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
+ }
}
}
@@ -95,13 +169,28 @@ void cChunkBuffer::SetBlocks(const BLOCKTYPE * a_src)
void cChunkBuffer::SetMeta(const NIBBLETYPE * a_src)
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i])
{
memcpy(&m_Sections[i]->m_BlockMeta, &a_src[i * segment_length], sizeof(NIBBLETYPE) * segment_length);
}
+ else
+ {
+ size_t j = 0;
+ // do nothing whilst 0
+ for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
+ if (j != segment_length)
+ {
+ m_Sections[i] = Allocate();
+ memcpy(
+ &m_Sections[i]->m_BlockTypes,
+ &a_src[i * segment_length],
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
+ }
}
}
@@ -110,14 +199,29 @@ void cChunkBuffer::SetMeta(const NIBBLETYPE * a_src)
void cChunkBuffer::SetLight(const NIBBLETYPE * a_src)
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i])
{
memcpy(&m_Sections[i]->m_BlockLight, &a_src[i * segment_length], sizeof(NIBBLETYPE) * segment_length);
}
- }
+ else
+ {
+ size_t j = 0;
+ // do nothing whilst 0
+ for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
+ if (j != segment_length)
+ {
+ m_Sections[i] = Allocate();
+ memcpy(
+ &m_Sections[i]->m_BlockTypes,
+ &a_src[i * segment_length],
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
+ }
+ }
}
@@ -125,14 +229,29 @@ void cChunkBuffer::SetLight(const NIBBLETYPE * a_src)
void cChunkBuffer::SetSkyLight (const NIBBLETYPE * a_src)
{
- for (int i = 0; i < CHUNK_SECTION_NUM; i++)
+ for (size_t i = 0; i < CHUNK_SECTION_NUM; i++)
{
const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i])
{
memcpy(&m_Sections[i]->m_BlockSkyLight, &a_src[i * segment_length], sizeof(NIBBLETYPE) * segment_length);
}
- }
+ else
+ {
+ size_t j = 0;
+ // do nothing whilst 0
+ for (; j < segment_length && a_src[i * segment_length + j] == 0xFF; j++);
+ if (j != segment_length)
+ {
+ m_Sections[i] = Allocate();
+ memcpy(
+ &m_Sections[i]->m_BlockTypes,
+ &a_src[i * segment_length],
+ sizeof(BLOCKTYPE) * segment_length
+ );
+ }
+ }
+ }
}