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authorHowaner <franzi.moos@googlemail.com>2014-06-17 19:03:56 +0200
committerHowaner <franzi.moos@googlemail.com>2014-06-17 19:03:56 +0200
commitc60ba8a52d6f84316eae041a24e395a4c37ae181 (patch)
treeedb983f4b20312115bc1033a2bd5a89c615ed30e /src/Generating/GridStructGen.cpp
parentCheck block type from cBlockEntity (diff)
parentMerge pull request #1099 from Howaner/Blocks (diff)
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Diffstat (limited to 'src/Generating/GridStructGen.cpp')
-rw-r--r--src/Generating/GridStructGen.cpp58
1 files changed, 48 insertions, 10 deletions
diff --git a/src/Generating/GridStructGen.cpp b/src/Generating/GridStructGen.cpp
index bfa6bccb1..2931df3eb 100644
--- a/src/Generating/GridStructGen.cpp
+++ b/src/Generating/GridStructGen.cpp
@@ -9,20 +9,51 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cEmptyStructure:
+
+/** A cStructure descendant representing an empty structure.
+Used when the generator descended from cGridStructGen doesn't return any structure, to keep at least the
+Origin coords so that the structure isn't queried over and over again. */
+class cEmptyStructure :
+ public cGridStructGen::cStructure
+{
+ typedef cGridStructGen::cStructure super;
+
+public:
+ cEmptyStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ) :
+ super(a_GridX, a_GridZ, a_OriginX, a_OriginZ)
+ {
+ }
+
+protected:
+ virtual void DrawIntoChunk(cChunkDesc & a_ChunkDesc) override
+ {
+ // Do nothing
+ }
+} ;
+
+
+
+
+
cGridStructGen::cGridStructGen(
int a_Seed,
int a_GridSizeX, int a_GridSizeZ,
+ int a_MaxOffsetX, int a_MaxOffsetZ,
int a_MaxStructureSizeX, int a_MaxStructureSizeZ,
size_t a_MaxCacheSize
) :
- m_Seed(a_Seed),
+ m_Noise(a_Seed),
m_GridSizeX(a_GridSizeX),
m_GridSizeZ(a_GridSizeZ),
+ m_MaxOffsetX(a_MaxOffsetX),
+ m_MaxOffsetZ(a_MaxOffsetZ),
m_MaxStructureSizeX(a_MaxStructureSizeX),
m_MaxStructureSizeZ(a_MaxStructureSizeZ),
m_MaxCacheSize(a_MaxCacheSize)
{
- size_t NumStructuresPerQuery = (size_t)((m_MaxStructureSizeX / m_GridSizeX + 1) * (m_MaxStructureSizeZ / m_GridSizeZ + 1));
+ size_t NumStructuresPerQuery = (size_t)(((m_MaxStructureSizeX + m_MaxOffsetX) / m_GridSizeX + 1) * ((m_MaxStructureSizeZ + m_MaxOffsetZ) / m_GridSizeZ + 1));
if (NumStructuresPerQuery > m_MaxCacheSize)
{
m_MaxCacheSize = NumStructuresPerQuery * 4;
@@ -40,10 +71,10 @@ cGridStructGen::cGridStructGen(
void cGridStructGen::GetStructuresForChunk(int a_ChunkX, int a_ChunkZ, cStructurePtrs & a_Structures)
{
// Calculate the min and max grid coords of the structures to be returned:
- int MinBlockX = a_ChunkX * cChunkDef::Width - m_MaxStructureSizeX;
- int MinBlockZ = a_ChunkZ * cChunkDef::Width - m_MaxStructureSizeZ;
- int MaxBlockX = a_ChunkX * cChunkDef::Width + m_MaxStructureSizeX + cChunkDef::Width - 1;
- int MaxBlockZ = a_ChunkZ * cChunkDef::Width + m_MaxStructureSizeZ + cChunkDef::Width - 1;
+ int MinBlockX = a_ChunkX * cChunkDef::Width - m_MaxStructureSizeX - m_MaxOffsetX;
+ int MinBlockZ = a_ChunkZ * cChunkDef::Width - m_MaxStructureSizeZ - m_MaxOffsetZ;
+ int MaxBlockX = a_ChunkX * cChunkDef::Width + m_MaxStructureSizeX + m_MaxOffsetX + cChunkDef::Width - 1;
+ int MaxBlockZ = a_ChunkZ * cChunkDef::Width + m_MaxStructureSizeZ + m_MaxOffsetZ + cChunkDef::Width - 1;
int MinGridX = MinBlockX / m_GridSizeX;
int MinGridZ = MinBlockZ / m_GridSizeZ;
int MaxGridX = (MaxBlockX + m_GridSizeX - 1) / m_GridSizeX;
@@ -75,14 +106,14 @@ void cGridStructGen::GetStructuresForChunk(int a_ChunkX, int a_ChunkZ, cStructur
// Create those structures that haven't been in the cache:
for (int x = MinGridX; x < MaxGridX; x++)
{
- int OriginX = x * m_GridSizeX;
+ int GridX = x * m_GridSizeX;
for (int z = MinGridZ; z < MaxGridZ; z++)
{
- int OriginZ = z * m_GridSizeZ;
+ int GridZ = z * m_GridSizeZ;
bool Found = false;
for (cStructurePtrs::const_iterator itr = a_Structures.begin(), end = a_Structures.end(); itr != end; ++itr)
{
- if (((*itr)->m_OriginX == OriginX) && ((*itr)->m_OriginZ == OriginZ))
+ if (((*itr)->m_GridX == GridX) && ((*itr)->m_GridZ == GridZ))
{
Found = true;
break;
@@ -90,7 +121,14 @@ void cGridStructGen::GetStructuresForChunk(int a_ChunkX, int a_ChunkZ, cStructur
} // for itr - a_Structures[]
if (!Found)
{
- a_Structures.push_back(CreateStructure(OriginX, OriginZ));
+ int OriginX = GridX + ((m_Noise.IntNoise2DInt(GridX + 3, GridZ + 5) / 7) % (m_MaxOffsetX * 2)) - m_MaxOffsetX;
+ int OriginZ = GridZ + ((m_Noise.IntNoise2DInt(GridX + 5, GridZ + 3) / 7) % (m_MaxOffsetZ * 2)) - m_MaxOffsetZ;
+ cStructurePtr Structure = CreateStructure(GridX, GridZ, OriginX, OriginZ);
+ if (Structure.get() == NULL)
+ {
+ Structure.reset(new cEmptyStructure(GridX, GridZ, OriginX, OriginZ));
+ }
+ a_Structures.push_back(Structure);
}
} // for z
} // for x