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-rw-r--r--src/Generating/DistortedHeightmap.cpp567
1 files changed, 9 insertions, 558 deletions
diff --git a/src/Generating/DistortedHeightmap.cpp b/src/Generating/DistortedHeightmap.cpp
index d5bc6ab55..37a51c18e 100644
--- a/src/Generating/DistortedHeightmap.cpp
+++ b/src/Generating/DistortedHeightmap.cpp
@@ -15,163 +15,6 @@
////////////////////////////////////////////////////////////////////////////////
-// cPattern:
-
-/// This class is used to store a column pattern initialized at runtime,
-/// so that the program doesn't need to explicitly set 256 values for each pattern
-/// Each pattern has 256 blocks so that there's no need to check pattern bounds when assigning the
-/// pattern - there will always be enough pattern left, even for the whole chunk height
-class cPattern
-{
-public:
- cPattern(cDistortedHeightmap::sBlockInfo * a_TopBlocks, size_t a_Count)
- {
- // Copy the pattern into the top:
- for (size_t i = 0; i < a_Count; i++)
- {
- m_Pattern[i] = a_TopBlocks[i];
- }
-
- // Fill the rest with stone:
- static cDistortedHeightmap::sBlockInfo Stone = {E_BLOCK_STONE, 0};
- for (size_t i = a_Count; i < cChunkDef::Height; i++)
- {
- m_Pattern[i] = Stone;
- }
- }
-
- const cDistortedHeightmap::sBlockInfo * Get(void) const { return m_Pattern; }
-
-protected:
- cDistortedHeightmap::sBlockInfo m_Pattern[cChunkDef::Height];
-} ;
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// The arrays to use for the top block pattern definitions:
-
-static cDistortedHeightmap::sBlockInfo tbGrass[] =
-{
- {E_BLOCK_GRASS, 0},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbSand[] =
-{
- { E_BLOCK_SAND, 0},
- { E_BLOCK_SAND, 0},
- { E_BLOCK_SAND, 0},
- { E_BLOCK_SANDSTONE, 0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbDirt[] =
-{
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbPodzol[] =
-{
- {E_BLOCK_DIRT, E_META_DIRT_PODZOL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbGrassLess[] =
-{
- {E_BLOCK_DIRT, E_META_DIRT_GRASSLESS},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
- {E_BLOCK_DIRT, E_META_DIRT_NORMAL},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbMycelium[] =
-{
- {E_BLOCK_MYCELIUM, 0},
- {E_BLOCK_DIRT, 0},
- {E_BLOCK_DIRT, 0},
- {E_BLOCK_DIRT, 0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbGravel[] =
-{
- {E_BLOCK_GRAVEL, 0},
- {E_BLOCK_GRAVEL, 0},
- {E_BLOCK_GRAVEL, 0},
- {E_BLOCK_STONE, 0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbStone[] =
-{
- {E_BLOCK_STONE, 0},
- {E_BLOCK_STONE, 0},
- {E_BLOCK_STONE, 0},
- {E_BLOCK_STONE, 0},
-} ;
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// Ocean floor pattern top-block definitions:
-
-static cDistortedHeightmap::sBlockInfo tbOFSand[] =
-{
- {E_BLOCK_SAND, 0},
- {E_BLOCK_SAND, 0},
- {E_BLOCK_SAND, 0},
- {E_BLOCK_SANDSTONE, 0}
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbOFClay[] =
-{
- { E_BLOCK_CLAY, 0},
- { E_BLOCK_CLAY, 0},
- { E_BLOCK_SAND, 0},
- { E_BLOCK_SAND, 0},
-} ;
-
-static cDistortedHeightmap::sBlockInfo tbOFRedSand[] =
-{
- { E_BLOCK_SAND, E_META_SAND_RED},
- { E_BLOCK_SAND, E_META_SAND_RED},
- { E_BLOCK_SAND, E_META_SAND_RED},
- { E_BLOCK_SANDSTONE, 0},
-} ;
-
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-// Individual patterns to use:
-
-static cPattern patGrass (tbGrass, ARRAYCOUNT(tbGrass));
-static cPattern patSand (tbSand, ARRAYCOUNT(tbSand));
-static cPattern patDirt (tbDirt, ARRAYCOUNT(tbDirt));
-static cPattern patPodzol (tbPodzol, ARRAYCOUNT(tbPodzol));
-static cPattern patGrassLess(tbGrassLess, ARRAYCOUNT(tbGrassLess));
-static cPattern patMycelium (tbMycelium, ARRAYCOUNT(tbMycelium));
-static cPattern patGravel (tbGravel, ARRAYCOUNT(tbGravel));
-static cPattern patStone (tbStone, ARRAYCOUNT(tbStone));
-
-static cPattern patOFSand (tbOFSand, ARRAYCOUNT(tbOFSand));
-static cPattern patOFClay (tbOFClay, ARRAYCOUNT(tbOFClay));
-static cPattern patOFRedSand(tbOFRedSand, ARRAYCOUNT(tbOFRedSand));
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
// cDistortedHeightmap:
/** This table assigns a relative maximum overhang size in each direction to biomes.
@@ -237,7 +80,7 @@ const cDistortedHeightmap::sGenParam cDistortedHeightmap::m_GenParam[256] =
{0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, // 110 .. 119
{0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}, // 120 .. 128
- // Release 1.7 /* biome variants:
+ // Release 1.7 biome variants:
/* biSunflowerPlains */ { 1.0f, 1.0f}, // 129
/* biDesertM */ { 1.0f, 1.0f}, // 130
/* biExtremeHillsM */ {16.0f, 16.0f}, // 131
@@ -279,8 +122,8 @@ const cDistortedHeightmap::sGenParam cDistortedHeightmap::m_GenParam[256] =
cDistortedHeightmap::cDistortedHeightmap(int a_Seed, cBiomeGenPtr a_BiomeGen) :
m_NoiseDistortX(a_Seed + 1000),
m_NoiseDistortZ(a_Seed + 2000),
- m_OceanFloorSelect(a_Seed + 3000),
- m_MesaFloor(a_Seed + 4000),
+ m_CurChunkX(0x7fffffff), // Set impossible coords for the chunk so that it's always considered stale
+ m_CurChunkZ(0x7fffffff),
m_BiomeGen(a_BiomeGen),
m_UnderlyingHeiGen(new cHeiGenBiomal(a_Seed, a_BiomeGen)),
m_HeightGen(m_UnderlyingHeiGen, 64),
@@ -293,8 +136,6 @@ cDistortedHeightmap::cDistortedHeightmap(int a_Seed, cBiomeGenPtr a_BiomeGen) :
m_NoiseDistortZ.AddOctave((NOISE_DATATYPE)1, (NOISE_DATATYPE)0.5);
m_NoiseDistortZ.AddOctave((NOISE_DATATYPE)0.5, (NOISE_DATATYPE)1);
m_NoiseDistortZ.AddOctave((NOISE_DATATYPE)0.25, (NOISE_DATATYPE)2);
-
- InitMesaPattern(a_Seed);
}
@@ -309,7 +150,7 @@ void cDistortedHeightmap::Initialize(cIniFile & a_IniFile)
}
// Read the params from the INI file:
- m_SeaLevel = a_IniFile.GetValueSetI("Generator", "DistortedHeightmapSeaLevel", 62);
+ m_SeaLevel = a_IniFile.GetValueSetI("Generator", "SeaLevel", 62);
m_FrequencyX = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyX", 10);
m_FrequencyY = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyY", 10);
m_FrequencyZ = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyZ", 10);
@@ -321,89 +162,6 @@ void cDistortedHeightmap::Initialize(cIniFile & a_IniFile)
-void cDistortedHeightmap::InitMesaPattern(int a_Seed)
-{
- // Stone in the bottom half of the pattern:
- for (int i = cChunkDef::Height; i < 2 * cChunkDef::Height; i++)
- {
- m_MesaPattern[i].BlockMeta = 0;
- m_MesaPattern[i].BlockType = E_BLOCK_STONE;
- }
-
- // Stained and hardened clay in the top half of the pattern
- // In a loop, choose whether to use one or two layers of stained clay, then choose a color and width for each layer
- // Separate each group with another layer of hardened clay
- cNoise PatternNoise((unsigned)a_Seed);
- static NIBBLETYPE AllowedColors[] =
- {
- E_META_STAINED_CLAY_YELLOW,
- E_META_STAINED_CLAY_YELLOW,
- E_META_STAINED_CLAY_RED,
- E_META_STAINED_CLAY_RED,
- E_META_STAINED_CLAY_WHITE,
- E_META_STAINED_CLAY_BROWN,
- E_META_STAINED_CLAY_BROWN,
- E_META_STAINED_CLAY_BROWN,
- E_META_STAINED_CLAY_ORANGE,
- E_META_STAINED_CLAY_ORANGE,
- E_META_STAINED_CLAY_ORANGE,
- E_META_STAINED_CLAY_ORANGE,
- E_META_STAINED_CLAY_ORANGE,
- E_META_STAINED_CLAY_ORANGE,
- E_META_STAINED_CLAY_LIGHTGRAY,
- } ;
- static int LayerSizes[] = // Adjust the chance so that thinner layers occur more commonly
- {
- 1, 1, 1, 1, 1, 1,
- 2, 2, 2, 2,
- 3, 3,
- } ;
- int Idx = cChunkDef::Height - 1;
- while (Idx >= 0)
- {
- // A layer group of 1 - 2 color stained clay:
- int Random = PatternNoise.IntNoise1DInt(Idx) / 7;
- int NumLayers = (Random % 2) + 1;
- Random /= 2;
- for (int Lay = 0; Lay < NumLayers; Lay++)
- {
- int NumBlocks = LayerSizes[(Random % ARRAYCOUNT(LayerSizes))];
- NIBBLETYPE Color = AllowedColors[(Random / 4) % ARRAYCOUNT(AllowedColors)];
- if (
- ((NumBlocks == 3) && (NumLayers == 2)) || // In two-layer mode disallow the 3-high layers:
- (Color == E_META_STAINED_CLAY_WHITE)) // White stained clay can ever be only 1 block high
- {
- NumBlocks = 1;
- }
- NumBlocks = std::min(Idx + 1, NumBlocks); // Limit by Idx so that we don't have to check inside the loop
- Random /= 32;
- for (int Block = 0; Block < NumBlocks; Block++, Idx--)
- {
- m_MesaPattern[Idx].BlockMeta = Color;
- m_MesaPattern[Idx].BlockType = E_BLOCK_STAINED_CLAY;
- } // for Block
- } // for Lay
-
- // A layer of hardened clay in between the layer group:
- int NumBlocks = (Random % 4) + 1; // All heights the same probability
- if ((NumLayers == 2) && (NumBlocks < 4))
- {
- // For two layers of stained clay, add an extra block of hardened clay:
- NumBlocks++;
- }
- NumBlocks = std::min(Idx + 1, NumBlocks); // Limit by Idx so that we don't have to check inside the loop
- for (int Block = 0; Block < NumBlocks; Block++, Idx--)
- {
- m_MesaPattern[Idx].BlockMeta = 0;
- m_MesaPattern[Idx].BlockType = E_BLOCK_HARDENED_CLAY;
- } // for Block
- } // while (Idx >= 0)
-}
-
-
-
-
-
void cDistortedHeightmap::PrepareState(int a_ChunkX, int a_ChunkZ)
{
if ((m_CurChunkX == a_ChunkX) && (m_CurChunkZ == a_ChunkZ))
@@ -474,23 +232,17 @@ void cDistortedHeightmap::GenerateHeightArray(void)
-void cDistortedHeightmap::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+void cDistortedHeightmap::GenShape(int a_ChunkX, int a_ChunkZ, cChunkDesc::Shape & a_Shape)
{
PrepareState(a_ChunkX, a_ChunkZ);
for (int z = 0; z < cChunkDef::Width; z++)
{
for (int x = 0; x < cChunkDef::Width; x++)
{
- int NoiseArrayIdx = x + 17 * 257 * z;
- cChunkDef::SetHeight(a_HeightMap, x, z, m_SeaLevel - 1);
- for (int y = cChunkDef::Height - 1; y > m_SeaLevel - 1; y--)
+ int idx = x + 17 * 257 * z;
+ for (int y = 0; y < cChunkDef::Height; y++)
{
- int HeightMapHeight = (int)m_DistortedHeightmap[NoiseArrayIdx + 17 * y];
- if (y < HeightMapHeight)
- {
- cChunkDef::SetHeight(a_HeightMap, x, z, y);
- break;
- }
+ a_Shape[y + x * 256 + z * 16 * 256] = (y < m_DistortedHeightmap[idx + y * 17]) ? 1 : 0;
} // for y
} // for x
} // for z
@@ -500,36 +252,7 @@ void cDistortedHeightmap::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::He
-void cDistortedHeightmap::InitializeHeightGen(cIniFile & a_IniFile)
-{
- Initialize(a_IniFile);
-}
-
-
-
-
-
-void cDistortedHeightmap::ComposeTerrain(cChunkDesc & a_ChunkDesc)
-{
- // Prepare the internal state for generating this chunk:
- PrepareState(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ());
-
- // Compose:
- a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);
- for (int z = 0; z < cChunkDef::Width; z++)
- {
- for (int x = 0; x < cChunkDef::Width; x++)
- {
- ComposeColumn(a_ChunkDesc, x, z);
- } // for x
- } // for z
-}
-
-
-
-
-
-void cDistortedHeightmap::InitializeCompoGen(cIniFile & a_IniFile)
+void cDistortedHeightmap::InitializeShapeGen(cIniFile & a_IniFile)
{
Initialize(a_IniFile);
}
@@ -654,275 +377,3 @@ void cDistortedHeightmap::GetDistortAmpsAt(BiomeNeighbors & a_Neighbors, int a_R
-void cDistortedHeightmap::ComposeColumn(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ)
-{
- // Frequencies for the podzol floor selecting noise:
- const NOISE_DATATYPE FrequencyX = 8;
- const NOISE_DATATYPE FrequencyZ = 8;
-
- EMCSBiome Biome = a_ChunkDesc.GetBiome(a_RelX, a_RelZ);
- switch (Biome)
- {
- case biOcean:
- case biPlains:
- case biForest:
- case biTaiga:
- case biSwampland:
- case biRiver:
- case biFrozenOcean:
- case biFrozenRiver:
- case biIcePlains:
- case biIceMountains:
- case biForestHills:
- case biTaigaHills:
- case biExtremeHillsEdge:
- case biExtremeHillsPlus:
- case biExtremeHills:
- case biJungle:
- case biJungleHills:
- case biJungleEdge:
- case biDeepOcean:
- case biStoneBeach:
- case biColdBeach:
- case biBirchForest:
- case biBirchForestHills:
- case biRoofedForest:
- case biColdTaiga:
- case biColdTaigaHills:
- case biSavanna:
- case biSavannaPlateau:
- case biSunflowerPlains:
- case biFlowerForest:
- case biTaigaM:
- case biSwamplandM:
- case biIcePlainsSpikes:
- case biJungleM:
- case biJungleEdgeM:
- case biBirchForestM:
- case biBirchForestHillsM:
- case biRoofedForestM:
- case biColdTaigaM:
- case biSavannaM:
- case biSavannaPlateauM:
- {
- FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patGrass.Get());
- return;
- }
-
- case biMegaTaiga:
- case biMegaTaigaHills:
- case biMegaSpruceTaiga:
- case biMegaSpruceTaigaHills:
- {
- // Select the pattern to use - podzol, grass or grassless dirt:
- NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
- NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
- NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
- const sBlockInfo * Pattern = (Val < -0.9) ? patGrassLess.Get() : ((Val > 0) ? patPodzol.Get() : patGrass.Get());
- FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, Pattern);
- return;
- }
-
- case biDesertHills:
- case biDesert:
- case biDesertM:
- case biBeach:
- {
- FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patSand.Get());
- return;
- }
-
- case biMushroomIsland:
- case biMushroomShore:
- {
- FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patMycelium.Get());
- return;
- }
-
- case biMesa:
- case biMesaPlateauF:
- case biMesaPlateau:
- case biMesaBryce:
- case biMesaPlateauFM:
- case biMesaPlateauM:
- {
- // Mesa biomes need special handling, because they don't follow the usual "4 blocks from top pattern",
- // instead, they provide a "from bottom" pattern with varying base height,
- // usually 4 blocks below the ocean level
- FillColumnMesa(a_ChunkDesc, a_RelX, a_RelZ);
- return;
- }
-
- case biExtremeHillsPlusM:
- case biExtremeHillsM:
- {
- // Select the pattern to use - gravel, stone or grass:
- NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
- NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
- NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
- const sBlockInfo * Pattern = (Val < 0.0) ? patStone.Get() : patGrass.Get();
- FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, Pattern);
- return;
- }
- default:
- {
- ASSERT(!"Unhandled biome");
- return;
- }
- } // switch (Biome)
-}
-
-
-
-
-
-void cDistortedHeightmap::FillColumnPattern(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ, const sBlockInfo * a_Pattern)
-{
- int NoiseArrayIdx = a_RelX + 17 * 257 * a_RelZ;
- bool HasHadWater = false;
- int PatternIdx = 0;
- for (int y = a_ChunkDesc.GetHeight(a_RelX, a_RelZ); y > 0; y--)
- {
- int HeightMapHeight = (int)m_DistortedHeightmap[NoiseArrayIdx + 17 * y];
-
- if (y < HeightMapHeight)
- {
- // "ground" part, use the pattern:
- a_ChunkDesc.SetBlockTypeMeta(a_RelX, y, a_RelZ, a_Pattern[PatternIdx].BlockType, a_Pattern[PatternIdx].BlockMeta);
- PatternIdx++;
- continue;
- }
-
- // "air" or "water" part:
- // Reset the pattern index to zero, so that the pattern is repeated from the top again:
- PatternIdx = 0;
-
- if (y >= m_SeaLevel)
- {
- // "air" part, do nothing
- continue;
- }
-
- a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
- if (HasHadWater)
- {
- continue;
- }
-
- // Select the ocean-floor pattern to use:
- a_Pattern = a_ChunkDesc.GetBiome(a_RelX, a_RelZ) == biDeepOcean ? patGravel.Get() : ChooseOceanFloorPattern(a_RelX, a_RelZ);
- HasHadWater = true;
- } // for y
- a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
-}
-
-
-
-
-
-void cDistortedHeightmap::FillColumnMesa(cChunkDesc & a_ChunkDesc, int a_RelX, int a_RelZ)
-{
- // Frequencies for the clay floor noise:
- const NOISE_DATATYPE FrequencyX = 50;
- const NOISE_DATATYPE FrequencyZ = 50;
-
- int Top = a_ChunkDesc.GetHeight(a_RelX, a_RelZ);
- if (Top < m_SeaLevel)
- {
- // The terrain is below sealevel, handle as regular ocean:
- FillColumnPattern(a_ChunkDesc, a_RelX, a_RelZ, patOFRedSand.Get());
- return;
- }
-
- NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
- NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
- int ClayFloor = m_SeaLevel - 6 + (int)(4.f * m_MesaFloor.CubicNoise2D(NoiseX, NoiseY));
- if (ClayFloor >= Top)
- {
- ClayFloor = Top - 1;
- }
-
- if (Top - m_SeaLevel < 5)
- {
- // Simple case: top is red sand, then hardened clay down to ClayFloor, then stone:
- a_ChunkDesc.SetBlockTypeMeta(a_RelX, Top, a_RelZ, E_BLOCK_SAND, E_META_SAND_RED);
- for (int y = Top - 1; y >= ClayFloor; y--)
- {
- a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_HARDENED_CLAY);
- }
- for (int y = ClayFloor - 1; y > 0; y--)
- {
- a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STONE);
- }
- a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
- return;
- }
-
- // Difficult case: use the mesa pattern and watch for overhangs:
- int NoiseArrayIdx = a_RelX + 17 * 257 * a_RelZ;
- int PatternIdx = cChunkDef::Height - (Top - ClayFloor); // We want the block at index ClayFloor to be pattern's 256th block (first stone)
- const sBlockInfo * Pattern = m_MesaPattern;
- bool HasHadWater = false;
- for (int y = Top; y > 0; y--)
- {
- int HeightMapHeight = (int)m_DistortedHeightmap[NoiseArrayIdx + 17 * y];
- if (y < HeightMapHeight)
- {
- // "ground" part, use the pattern:
- a_ChunkDesc.SetBlockTypeMeta(a_RelX, y, a_RelZ, Pattern[PatternIdx].BlockType, Pattern[PatternIdx].BlockMeta);
- PatternIdx++;
- continue;
- }
-
- if (y >= m_SeaLevel)
- {
- // "air" part, do nothing
- continue;
- }
-
- // "water" part, fill with water and choose new pattern for ocean floor, if not chosen already:
- PatternIdx = 0;
- a_ChunkDesc.SetBlockType(a_RelX, y, a_RelZ, E_BLOCK_STATIONARY_WATER);
- if (HasHadWater)
- {
- continue;
- }
-
- // Select the ocean-floor pattern to use:
- Pattern = ChooseOceanFloorPattern(a_RelX, a_RelZ);
- HasHadWater = true;
- } // for y
- a_ChunkDesc.SetBlockType(a_RelX, 0, a_RelZ, E_BLOCK_BEDROCK);
-}
-
-
-
-
-
-const cDistortedHeightmap::sBlockInfo * cDistortedHeightmap::ChooseOceanFloorPattern(int a_RelX, int a_RelZ)
-{
- // Frequencies for the ocean floor selecting noise:
- const NOISE_DATATYPE FrequencyX = 3;
- const NOISE_DATATYPE FrequencyZ = 3;
-
- // Select the ocean-floor pattern to use:
- NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX)) / FrequencyX;
- NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ)) / FrequencyZ;
- NOISE_DATATYPE Val = m_OceanFloorSelect.CubicNoise2D(NoiseX, NoiseY);
- if (Val < -0.95)
- {
- return patOFClay.Get();
- }
- else if (Val < 0)
- {
- return patOFSand.Get();
- }
- else
- {
- return patDirt.Get();
- }
-}
-
-
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 17:51:29 +0100