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LineBlockTracer: Fixed initial errors

This commit is contained in:
madmaxoft 2013-08-04 16:07:15 +02:00
parent 6af81c66e9
commit 654714e7bc
2 changed files with 10 additions and 7 deletions
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6
source/BlockTracer.h
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@ -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)

11
source/LineBlockTracer.cpp
View File

@ -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))
{