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authorMattes D <github@xoft.cz>2014-11-04 08:40:23 +0100
committerMattes D <github@xoft.cz>2014-11-04 08:40:23 +0100
commitf239a28d0661cbcfa7480d81008bb66607e55742 (patch)
tree7b6ed47d31e91cede53327c5dee31bbb2fee2437 /src/Generating/HeiGen.cpp
parentFixed a missing endline. (diff)
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Diffstat (limited to 'src/Generating/HeiGen.cpp')
-rw-r--r--src/Generating/HeiGen.cpp207
1 files changed, 207 insertions, 0 deletions
diff --git a/src/Generating/HeiGen.cpp b/src/Generating/HeiGen.cpp
index f7a26544c..de97bc1a0 100644
--- a/src/Generating/HeiGen.cpp
+++ b/src/Generating/HeiGen.cpp
@@ -537,6 +537,209 @@ NOISE_DATATYPE cHeiGenBiomal::GetHeightAt(int a_RelX, int a_RelZ, int a_ChunkX,
////////////////////////////////////////////////////////////////////////////////
+// cHeiGenMinMax:
+
+class cHeiGenMinMax:
+ public cTerrainHeightGen
+{
+ typedef cTerrainHeightGen super;
+
+ /** Size of the averaging process, in columns (for each direction). Must be less than 16. */
+ static const int AVERAGING_SIZE = 4;
+
+public:
+ cHeiGenMinMax(int a_Seed, cBiomeGenPtr a_BiomeGen):
+ m_Noise(a_Seed),
+ m_BiomeGen(a_BiomeGen),
+ m_TotalWeight(0)
+ {
+ // Initialize the weights:
+ for (int z = 0; z <= AVERAGING_SIZE * 2; z++)
+ {
+ for (int x = 0; x <= AVERAGING_SIZE * 2; x++)
+ {
+ m_Weights[z][x] = 1 + 2 * AVERAGING_SIZE - std::abs(x - AVERAGING_SIZE) - std::abs(z - AVERAGING_SIZE);
+ m_TotalWeight += m_Weights[z][x];
+ }
+ }
+
+ // Initialize the Perlin generator:
+ m_Perlin.AddOctave(0.04f, 0.2f);
+ m_Perlin.AddOctave(0.02f, 0.1f);
+ m_Perlin.AddOctave(0.01f, 0.05f);
+ m_Perlin.AddOctave(0.005f, 0.025f);
+ m_Perlin.AddOctave(0.0025f, 0.0125f);
+ }
+
+
+ virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+ {
+ // Generate the biomes for the 3*3 neighbors:
+ cChunkDef::BiomeMap neighborBiomes[3][3];
+ for (int z = 0; z < 3; z++) for (int x = 0; x < 3; x++)
+ {
+ m_BiomeGen->GenBiomes(a_ChunkX + x - 1, a_ChunkZ + z - 1, neighborBiomes[z][x]);
+ }
+
+ // Get the min and max heights based on the biomes:
+ double minHeight[cChunkDef::Width * cChunkDef::Width];
+ double maxHeight[cChunkDef::Width * cChunkDef::Width];
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ for (int x = 0; x < cChunkDef::Width; x++)
+ {
+ // For each column, sum the min and max values of the neighborhood around it:
+ double min = 0, max = 0;
+ for (int relz = 0; relz <= AVERAGING_SIZE * 2; relz++)
+ {
+ int bz = z + 16 + relz - AVERAGING_SIZE; // Biome Z coord relative to the neighborBiomes start
+ int cz = bz / 16; // Chunk Z coord relative to the neighborBiomes start
+ bz = bz % 16; // Biome Z coord relative to cz in neighborBiomes
+ for (int relx = 0; relx <= AVERAGING_SIZE * 2; relx++)
+ {
+ int bx = x + 16 + relx - AVERAGING_SIZE; // Biome X coord relative to the neighborBiomes start
+ int cx = bx / 16; // Chunk X coord relative to the neighborBiomes start
+ bx = bx % 16; // Biome X coord relative to cz in neighborBiomes
+
+ // Get the biome's min and max heights:
+ double bmin, bmax;
+ getBiomeMinMax(cChunkDef::GetBiome(neighborBiomes[cz][cx], bx, bz), bmin, bmax);
+
+ // Add them to the total, with the weight depending on their relative position to the column:
+ min += bmin * m_Weights[relz][relx];
+ max += bmax * m_Weights[relz][relx];
+ } // for relx
+ } // for relz
+ minHeight[x + z * cChunkDef::Width] = min / m_TotalWeight;
+ maxHeight[x + z * cChunkDef::Width] = max / m_TotalWeight;
+ } // for x
+ } // for z
+
+ // Generate the base noise:
+ NOISE_DATATYPE noise[cChunkDef::Width * cChunkDef::Width];
+ NOISE_DATATYPE workspace[cChunkDef::Width * cChunkDef::Width];
+ NOISE_DATATYPE startX = static_cast<float>(a_ChunkX * cChunkDef::Width);
+ NOISE_DATATYPE endX = startX + cChunkDef::Width - 1;
+ NOISE_DATATYPE startZ = static_cast<float>(a_ChunkZ * cChunkDef::Width);
+ NOISE_DATATYPE endZ = startZ + cChunkDef::Width - 1;
+ m_Perlin.Generate2D(noise, 16, 16, startX, endX, startZ, endZ, workspace);
+
+ // Make the height by ranging the noise between min and max:
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ for (int x = 0; x < cChunkDef::Width; x++)
+ {
+ double min = minHeight[x + z * cChunkDef::Width];
+ double max = maxHeight[x + z * cChunkDef::Width];
+ double h = (max + min) / 2 + noise[x + z * cChunkDef::Width] * (max - min);
+ cChunkDef::SetHeight(a_HeightMap, x, z, static_cast<HEIGHTTYPE>(h));
+ }
+ }
+ }
+
+
+ virtual void InitializeHeightGen(cIniFile & a_IniFile)
+ {
+ // No settings available
+ }
+
+protected:
+ cNoise m_Noise;
+
+ cPerlinNoise m_Perlin;
+
+ /** The biome generator to query for the underlying biomes. */
+ cBiomeGenPtr m_BiomeGen;
+
+ /** Weights applied to each of the min / max values in the neighborhood of the currently evaluated column. */
+ double m_Weights[AVERAGING_SIZE * 2 + 1][AVERAGING_SIZE * 2 + 1];
+
+ /** Sum of all the m_Weights items. */
+ double m_TotalWeight;
+
+
+ /** Returns the minimum and maximum heights for the given biome. */
+ void getBiomeMinMax(EMCSBiome a_Biome, double & a_Min, double & a_Max)
+ {
+ switch (a_Biome)
+ {
+ case biBeach: a_Min = 61; a_Max = 64; break;
+ case biBirchForest: a_Min = 63; a_Max = 75; break;
+ case biBirchForestHills: a_Min = 63; a_Max = 90; break;
+ case biBirchForestHillsM: a_Min = 63; a_Max = 90; break;
+ case biBirchForestM: a_Min = 63; a_Max = 75; break;
+ case biColdBeach: a_Min = 61; a_Max = 64; break;
+ case biColdTaiga: a_Min = 63; a_Max = 75; break;
+ case biColdTaigaHills: a_Min = 63; a_Max = 90; break;
+ case biColdTaigaM: a_Min = 63; a_Max = 75; break;
+ case biDeepOcean: a_Min = 30; a_Max = 60; break;
+ case biDesert: a_Min = 63; a_Max = 70; break;
+ case biDesertHills: a_Min = 63; a_Max = 85; break;
+ case biDesertM: a_Min = 63; a_Max = 70; break;
+ case biEnd: a_Min = 10; a_Max = 100; break;
+ case biExtremeHills: a_Min = 60; a_Max = 120; break;
+ case biExtremeHillsEdge: a_Min = 63; a_Max = 100; break;
+ case biExtremeHillsM: a_Min = 60; a_Max = 120; break;
+ case biExtremeHillsPlus: a_Min = 60; a_Max = 140; break;
+ case biExtremeHillsPlusM: a_Min = 60; a_Max = 140; break;
+ case biFlowerForest: a_Min = 63; a_Max = 75; break;
+ case biForest: a_Min = 63; a_Max = 75; break;
+ case biForestHills: a_Min = 63; a_Max = 90; break;
+ case biFrozenOcean: a_Min = 45; a_Max = 64; break;
+ case biFrozenRiver: a_Min = 60; a_Max = 62; break;
+ case biIceMountains: a_Min = 63; a_Max = 90; break;
+ case biIcePlains: a_Min = 63; a_Max = 70; break;
+ case biIcePlainsSpikes: a_Min = 60; a_Max = 70; break;
+ case biJungle: a_Min = 60; a_Max = 80; break;
+ case biJungleEdge: a_Min = 62; a_Max = 75; break;
+ case biJungleEdgeM: a_Min = 62; a_Max = 75; break;
+ case biJungleHills: a_Min = 60; a_Max = 90; break;
+ case biJungleM: a_Min = 60; a_Max = 75; break;
+ case biMegaSpruceTaiga: a_Min = 63; a_Max = 75; break;
+ case biMegaSpruceTaigaHills: a_Min = 63; a_Max = 90; break;
+ case biMegaTaiga: a_Min = 63; a_Max = 75; break;
+ case biMegaTaigaHills: a_Min = 63; a_Max = 90; break;
+ case biMesa: a_Min = 63; a_Max = 90; break;
+ case biMesaBryce: a_Min = 60; a_Max = 67; break;
+ case biMesaPlateau: a_Min = 75; a_Max = 85; break;
+ case biMesaPlateauF: a_Min = 80; a_Max = 90; break;
+ case biMesaPlateauFM: a_Min = 80; a_Max = 90; break;
+ case biMesaPlateauM: a_Min = 75; a_Max = 85; break;
+ case biMushroomIsland: a_Min = 63; a_Max = 90; break;
+ case biMushroomShore: a_Min = 60; a_Max = 75; break;
+ case biNether: a_Min = 10; a_Max = 100; break;
+ case biOcean: a_Min = 45; a_Max = 64; break;
+ case biPlains: a_Min = 63; a_Max = 70; break;
+ case biRiver: a_Min = 60; a_Max = 62; break;
+ case biRoofedForest: a_Min = 63; a_Max = 75; break;
+ case biRoofedForestM: a_Min = 63; a_Max = 75; break;
+ case biSavanna: a_Min = 63; a_Max = 75; break;
+ case biSavannaM: a_Min = 63; a_Max = 80; break;
+ case biSavannaPlateau: a_Min = 75; a_Max = 100; break;
+ case biSavannaPlateauM: a_Min = 80; a_Max = 160; break;
+ case biStoneBeach: a_Min = 60; a_Max = 64; break;
+ case biSunflowerPlains: a_Min = 63; a_Max = 70; break;
+ case biSwampland: a_Min = 60; a_Max = 67; break;
+ case biSwamplandM: a_Min = 61; a_Max = 67; break;
+ case biTaiga: a_Min = 63; a_Max = 75; break;
+ case biTaigaHills: a_Min = 63; a_Max = 90; break;
+ case biTaigaM: a_Min = 63; a_Max = 80; break;
+ default:
+ {
+ ASSERT(!"Unknown biome");
+ a_Min = 10;
+ a_Max = 10;
+ break;
+ }
+ }
+ }
+};
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
// cTerrainHeightGen:
cTerrainHeightGenPtr cTerrainHeightGen::CreateHeightGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, int a_Seed, bool & a_CacheOffByDefault)
@@ -567,6 +770,10 @@ cTerrainHeightGenPtr cTerrainHeightGen::CreateHeightGen(cIniFile & a_IniFile, cB
{
res = new cEndGen(a_Seed);
}
+ else if (NoCaseCompare(HeightGenName, "MinMax") == 0)
+ {
+ res = new cHeiGenMinMax(a_Seed, a_BiomeGen);
+ }
else if (NoCaseCompare(HeightGenName, "Mountains") == 0)
{
res = new cHeiGenMountains(a_Seed);