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-rw-r--r--src/ChunkDef.h120
1 files changed, 12 insertions, 108 deletions
diff --git a/src/ChunkDef.h b/src/ChunkDef.h
index 1e59f9fb7..9e97d53fc 100644
--- a/src/ChunkDef.h
+++ b/src/ChunkDef.h
@@ -129,13 +129,14 @@ private:
class cChunkDef
{
public:
+
// Chunk dimensions:
static const int Width = 16;
static const int Height = 256;
static const int NumBlocks = Width * Height * Width;
- /** If the data is collected into a single buffer, how large it needs to be: */
- static const int BlockDataSize = cChunkDef::NumBlocks * 2 + (cChunkDef::NumBlocks / 2); // 2.5 * numblocks
+ static const int SectionHeight = 16;
+ static const size_t NumSections = (cChunkDef::Height / SectionHeight);
/** The type used for any heightmap operations and storage; idx = x + Width * z; Height points to the highest non-air block in the column */
typedef HEIGHTTYPE HeightMap[Width * Width];
@@ -151,12 +152,6 @@ public:
/** The type used for block data in nibble format, AXIS_ORDER ordering */
typedef NIBBLETYPE BlockNibbles[NumBlocks / 2];
- /** The storage wrapper used for compressed blockdata residing in RAMz */
- typedef std::vector<BLOCKTYPE> COMPRESSED_BLOCKTYPE;
-
- /** The storage wrapper used for compressed nibbledata residing in RAMz */
- typedef std::vector<NIBBLETYPE> COMPRESSED_NIBBLETYPE;
-
/** Converts absolute block coords into relative (chunk + block) coords: */
inline static void AbsoluteToRelative(/* in-out */ int & a_X, int & a_Y, int & a_Z, /* out */ int & a_ChunkX, int & a_ChunkZ)
@@ -169,9 +164,6 @@ public:
}
-
-
-
/** Converts the specified absolute position into a relative position within its chunk.
Use BlockToChunk to query the chunk coords. */
inline static Vector3i AbsoluteToRelative(Vector3i a_BlockPosition)
@@ -181,9 +173,6 @@ public:
}
-
-
-
/** Converts the absolute coords into coords relative to the specified chunk. */
inline static Vector3i AbsoluteToRelative(Vector3i a_BlockPosition, cChunkCoords a_ChunkPos)
{
@@ -191,8 +180,6 @@ public:
}
-
-
/** Converts relative block coordinates into absolute coordinates with a known chunk location */
inline static Vector3i RelativeToAbsolute(Vector3i a_RelBlockPosition, cChunkCoords a_ChunkCoords)
{
@@ -204,21 +191,20 @@ public:
}
-
-
-
/** Validates a height-coordinate. Returns false if height-coordiante is out of height bounds */
inline static bool IsValidHeight(int a_Height)
{
return ((a_Height >= 0) && (a_Height < Height));
}
+
/** Validates a width-coordinate. Returns false if width-coordiante is out of width bounds */
inline static bool IsValidWidth(int a_Width)
{
return ((a_Width >= 0) && (a_Width < Width));
}
+
/** Validates a chunk relative coordinate. Returns false if the coordiante is out of bounds for a chunk. */
inline static bool IsValidRelPos(Vector3i a_RelPos)
{
@@ -229,6 +215,7 @@ public:
);
}
+
/** Converts absolute block coords to chunk coords: */
inline static void BlockToChunk(int a_X, int a_Z, int & a_ChunkX, int & a_ChunkZ)
{
@@ -239,6 +226,7 @@ public:
a_ChunkZ = ChunkCoords.m_ChunkZ;
}
+
/** The Y coordinate of a_Pos is ignored */
inline static cChunkCoords BlockToChunk(const Vector3i a_Position)
{
@@ -273,14 +261,12 @@ public:
}
-
inline static int MakeIndexNoCheck(Vector3i a_RelPos)
{
return MakeIndexNoCheck(a_RelPos.x, a_RelPos.y, a_RelPos.z);
}
-
inline static Vector3i IndexToCoordinate(size_t index)
{
#if AXIS_ORDER == AXIS_ORDER_XZY
@@ -370,115 +356,33 @@ public:
}
- static NIBBLETYPE GetNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, int a_BlockIdx, bool a_IsSkyLightNibble = false)
- {
- if ((a_BlockIdx > -1) && (a_BlockIdx < NumBlocks))
- {
- if (static_cast<size_t>(a_BlockIdx / 2) >= a_Buffer.size())
- {
- return (a_IsSkyLightNibble ? 0xff : 0);
- }
- return (a_Buffer[static_cast<size_t>(a_BlockIdx / 2)] >> ((a_BlockIdx & 1) * 4)) & 0x0f;
- }
- ASSERT(!"cChunkDef::GetNibble(): index out of chunk range!");
- return 0;
- }
-
-
- static NIBBLETYPE GetNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, int x, int y, int z, bool a_IsSkyLightNibble = false)
- {
- if ((x < Width) && (x > -1) && (y < Height) && (y > -1) && (z < Width) && (z > -1))
- {
- size_t Index = static_cast<size_t>(MakeIndexNoCheck(x, y, z));
- if ((Index / 2) >= a_Buffer.size())
- {
- return (a_IsSkyLightNibble ? 0xff : 0);
- }
- return ExpandNibble(a_Buffer, Index);
- }
- ASSERT(!"cChunkDef::GetNibble(): coords out of chunk range!");
- return 0;
- }
-
-
- static NIBBLETYPE GetNibble(const NIBBLETYPE * a_Buffer, Vector3i a_RelPos)
- {
- if (IsValidRelPos(a_RelPos))
- {
- auto Index = MakeIndexNoCheck(a_RelPos);
- return (a_Buffer[static_cast<size_t>(Index / 2)] >> ((Index & 1) * 4)) & 0x0f;
- }
- ASSERT(!"Coords out of chunk range!");
- return 0;
- }
-
-
static NIBBLETYPE GetNibble(const NIBBLETYPE * a_Buffer, int x, int y, int z)
{
if ((x < Width) && (x > -1) && (y < Height) && (y > -1) && (z < Width) && (z > -1))
{
int Index = MakeIndexNoCheck(x, y, z);
- return (a_Buffer[static_cast<size_t>(Index / 2)] >> ((Index & 1) * 4)) & 0x0f;
+ return ExpandNibble(a_Buffer, static_cast<size_t>(Index));
}
ASSERT(!"cChunkDef::GetNibble(): coords out of chunk range!");
return 0;
}
- static void SetNibble(COMPRESSED_NIBBLETYPE & a_Buffer, int a_BlockIdx, NIBBLETYPE a_Nibble)
+ inline static void PackNibble(NIBBLETYPE * const a_Buffer, const size_t a_Index, const NIBBLETYPE a_Nibble)
{
- if ((a_BlockIdx < 0) || (a_BlockIdx >= NumBlocks))
- {
- ASSERT(!"cChunkDef::SetNibble(): index out of range!");
- return;
- }
- if (static_cast<size_t>(a_BlockIdx / 2) >= a_Buffer.size())
- {
- a_Buffer.resize(static_cast<size_t>((a_BlockIdx / 2) + 1));
- }
- a_Buffer[static_cast<size_t>(a_BlockIdx / 2)] = PackNibble(a_Buffer, static_cast<size_t>(a_BlockIdx), a_Nibble);
- }
+ ASSERT((a_Nibble & 0xF) == a_Nibble); // Only the lower bits should be set
-
- static void SetNibble(COMPRESSED_NIBBLETYPE & a_Buffer, int x, int y, int z, NIBBLETYPE a_Nibble)
- {
- if (
- (x >= Width) || (x < 0) ||
- (y >= Height) || (y < 0) ||
- (z >= Width) || (z < 0)
- )
- {
- ASSERT(!"cChunkDef::SetNibble(): index out of range!");
- return;
- }
-
- size_t Index = static_cast<size_t>(MakeIndexNoCheck(x, y, z));
- if ((Index / 2) >= a_Buffer.size())
- {
- a_Buffer.resize(((Index / 2) + 1));
- }
- a_Buffer[(Index / 2)] = PackNibble(a_Buffer, Index, a_Nibble);
- }
-
-
-private:
-
-
- inline static NIBBLETYPE PackNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, size_t a_Index, NIBBLETYPE a_Nibble)
- {
- return static_cast<NIBBLETYPE>(
+ a_Buffer[a_Index / 2] = static_cast<NIBBLETYPE>(
(a_Buffer[a_Index / 2] & (0xf0 >> ((a_Index & 1) * 4))) | // The untouched nibble
((a_Nibble & 0x0f) << ((a_Index & 1) * 4)) // The nibble being set
);
}
- inline static NIBBLETYPE ExpandNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, size_t a_Index)
+ inline static NIBBLETYPE ExpandNibble(const NIBBLETYPE * const a_Buffer, const size_t a_Index)
{
return (a_Buffer[a_Index / 2] >> ((a_Index & 1) * 4)) & 0x0f;
}
-
-
} ;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 17:10:17 +0200