013ae71c87
git-svn-id: http://mc-server.googlecode.com/svn/trunk@337 0a769ca7-a7f5-676a-18bf-c427514a06d6
453 lines
12 KiB
C++
453 lines
12 KiB
C++
|
|
#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
|
|
|
|
#include "cWorldGenerator.h"
|
|
#include "cNoise.h"
|
|
#include "cWorld.h"
|
|
#include "cChunk.h"
|
|
#include "cGenSettings.h"
|
|
|
|
#include "BlockID.h"
|
|
#include "Vector3i.h"
|
|
|
|
|
|
|
|
|
|
|
|
// An array describing an 8-way neighbor coords deltas
|
|
static struct
|
|
{
|
|
int m_X;
|
|
int m_Z;
|
|
} g_NeighborCoords[] =
|
|
{
|
|
{-1, -1},
|
|
{-1, 0},
|
|
{-1, 1},
|
|
{0, -1},
|
|
{0, 1},
|
|
{1, -1},
|
|
{1, 0},
|
|
{1, 1},
|
|
} ;
|
|
|
|
|
|
|
|
|
|
|
|
// You can use GLASS for these instead for debugging ore generation ;)
|
|
// Beware though, client has problems with this much glass!
|
|
const char BLOCK_STONE = E_BLOCK_STONE;
|
|
const char BLOCK_DIRT = E_BLOCK_DIRT;
|
|
const char BLOCK_GRASS = E_BLOCK_GRASS;
|
|
|
|
const int MAX_HEIGHT_COAL = 127;
|
|
const int NUM_NESTS_COAL = 40;
|
|
const int NEST_SIZE_COAL = 10;
|
|
|
|
const int MAX_HEIGHT_IRON = 70;
|
|
const int NUM_NESTS_IRON = 10;
|
|
const int NEST_SIZE_IRON = 6;
|
|
|
|
const int MAX_HEIGHT_REDSTONE = 40;
|
|
const int NUM_NESTS_REDSTONE = 10;
|
|
const int NEST_SIZE_REDSTONE = 6;
|
|
|
|
const int MAX_HEIGHT_GOLD = 35;
|
|
const int NUM_NESTS_GOLD = 6;
|
|
const int NEST_SIZE_GOLD = 6;
|
|
|
|
const int MAX_HEIGHT_DIAMOND = 16;
|
|
const int NUM_NESTS_DIAMOND = 6;
|
|
const int NEST_SIZE_DIAMOND = 5;
|
|
|
|
|
|
|
|
|
|
|
|
cWorldGenerator::cWorldGenerator(cWorld * a_World) :
|
|
m_World(a_World)
|
|
{
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
cWorldGenerator::~cWorldGenerator()
|
|
{
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cWorldGenerator::GenerateChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, char * a_BlockData, cEntityList & a_Entities, cBlockEntityList & a_BlockEntities)
|
|
{
|
|
GenerateTerrain(a_ChunkX, a_ChunkY, a_ChunkZ, a_BlockData);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cWorldGenerator::PostGenerateChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
|
|
{
|
|
// Check the chunk just generated and all its 8-way neighbors
|
|
|
|
// Make the chunks stay loaded in the surrounding 5x5 area:
|
|
cChunkStay Stay(m_World);
|
|
Stay.Add(a_ChunkX, a_ChunkY, a_ChunkZ);
|
|
for (int x = -2; x <= 2; x++)
|
|
{
|
|
for (int z = -2; z <= 2; z++)
|
|
{
|
|
Stay.Add(a_ChunkX + x, a_ChunkY, a_ChunkZ + z);
|
|
} // for z
|
|
} // for x
|
|
Stay.Enable();
|
|
|
|
m_World->LoadChunks(Stay);
|
|
|
|
CheckNeighbors(a_ChunkX, a_ChunkY, a_ChunkZ);
|
|
for (int i = 0; i < ARRAYCOUNT(g_NeighborCoords); i++)
|
|
{
|
|
CheckNeighbors(a_ChunkX + g_NeighborCoords[i].m_X, a_ChunkY, a_ChunkZ + g_NeighborCoords[i].m_Z);
|
|
} // for i - g_NeighborCoords[]
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cWorldGenerator::CheckNeighbors(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
|
|
{
|
|
if (!m_World->IsChunkValid(a_ChunkX, a_ChunkY, a_ChunkZ))
|
|
{
|
|
return;
|
|
}
|
|
|
|
// Check all 8-way neighbors, if they are all valid, generate foliage in this chunk:
|
|
int NumNeighbors = 0;
|
|
for (int i = 0; i < ARRAYCOUNT(g_NeighborCoords); i++)
|
|
{
|
|
if (m_World->IsChunkValid(a_ChunkX + g_NeighborCoords[i].m_X, a_ChunkY, a_ChunkZ + g_NeighborCoords[i].m_Z))
|
|
{
|
|
NumNeighbors++;
|
|
}
|
|
} // for i - g_NeighborCoords[]
|
|
if (NumNeighbors == 8)
|
|
{
|
|
GenerateFoliage(a_ChunkX, a_ChunkY, a_ChunkZ);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static float GetNoise( float x, float y, cNoise & a_Noise )
|
|
{
|
|
float oct1 = a_Noise.CubicNoise2D( x*cGenSettings::HeightFreq1, y*cGenSettings::HeightFreq1 )*cGenSettings::HeightAmp1;
|
|
float oct2 = a_Noise.CubicNoise2D( x*cGenSettings::HeightFreq2, y*cGenSettings::HeightFreq2 )*cGenSettings::HeightAmp2;
|
|
float oct3 = a_Noise.CubicNoise2D( x*cGenSettings::HeightFreq3, y*cGenSettings::HeightFreq3 )*cGenSettings::HeightAmp3;
|
|
|
|
float height = a_Noise.CubicNoise2D( x*0.1f, y*0.1f )*2;
|
|
|
|
float flatness = ((a_Noise.CubicNoise2D( x*0.5f, y*0.5f ) + 1.f ) * 0.5f) * 1.1f; // 0 ... 1.5
|
|
flatness *= flatness * flatness;
|
|
|
|
return (oct1 + oct2 + oct3) * flatness + height;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#define PI_2 (1.57079633f)
|
|
static float GetMarbleNoise( float x, float y, float z, cNoise & a_Noise )
|
|
{
|
|
float oct1 = (a_Noise.CubicNoise3D( x*0.1f, y*0.1f, z*0.1f ))*4;
|
|
|
|
oct1 = oct1 * oct1 * oct1;
|
|
if( oct1 < 0.f ) oct1 = PI_2;
|
|
if( oct1 > PI_2 ) oct1 = PI_2;
|
|
|
|
return oct1;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static float GetOreNoise( float x, float y, float z, cNoise & a_Noise )
|
|
{
|
|
float oct1 = a_Noise.CubicNoise3D( x*0.1f, y*0.1f, z*0.1f );
|
|
float oct2 = a_Noise.CubicNoise3D( x*0.05f, y*0.5f, z*0.05f );
|
|
|
|
oct2 *= oct2;
|
|
oct1 = (1 - (oct1 * oct1 *100)) * oct2;
|
|
//if( oct1 < 0.5f ) oct1 = 0;
|
|
//else oct1 = 1.f;
|
|
|
|
return oct1;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
unsigned int cWorldGenerator::MakeIndex(int x, int y, int z )
|
|
{
|
|
ASSERT((x < 16) && (x > -1) && (y < 128) && (y > -1) && (z < 16) && (z > -1));
|
|
|
|
return y + (z * 128) + (x * 128 * 16);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cWorldGenerator::GenerateTerrain(int a_ChunkX, int a_ChunkY, int a_ChunkZ, char * a_BlockData)
|
|
{
|
|
const int WATER_LEVEL = 60;
|
|
const int SAND_LEVEL = 3;
|
|
|
|
memset(a_BlockData, E_BLOCK_AIR, cChunk::c_BlockDataSize);
|
|
|
|
cNoise Noise(m_World->GetWorldSeed());
|
|
|
|
for (int z = 0; z < 16; z++)
|
|
{
|
|
const float zz = (float)(a_ChunkZ * 16 + z);
|
|
for (int x = 0; x < 16; x++)
|
|
{
|
|
// Place bedrock on bottom layer
|
|
a_BlockData[MakeIndex(x, 0, z)] = E_BLOCK_BEDROCK;
|
|
|
|
const float xx = (float)(a_ChunkX * 16 + x);
|
|
|
|
int Height = (int)(GetNoise( xx * 0.05f, zz * 0.05f, Noise ) * 16);
|
|
const int Lower = 64;
|
|
if ( Height + Lower > 127 )
|
|
{
|
|
Height = 127 - Lower;
|
|
}
|
|
if (Height < -63)
|
|
{
|
|
Height = -63;
|
|
}
|
|
const int Top = Lower + Height;
|
|
const float WaveNoise = 1; // m_Noise.CubicNoise2D( xx*0.01f, zz*0.01f ) + 0.5f;
|
|
for( int y = 1; y < Top; ++y )
|
|
{
|
|
const float yy = (float)y;
|
|
// V prevent caves from getting too close to the surface
|
|
if( (Top - y > (WaveNoise*2) ) && cosf(GetMarbleNoise( xx, yy*0.5f, zz, Noise )) * fabs( cosf( yy*0.2f + WaveNoise*2 )*0.75f + WaveNoise ) > 0.5f )
|
|
{
|
|
if( y > 4 )
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = E_BLOCK_AIR;
|
|
if( z > 0 ) a_BlockData[ MakeIndex(x, y, z-1) ] = E_BLOCK_AIR;
|
|
if( z < 15 ) a_BlockData[ MakeIndex(x, y, z+1) ] = E_BLOCK_AIR;
|
|
if( x > 0 ) a_BlockData[ MakeIndex(x-1, y, z) ] = E_BLOCK_AIR;
|
|
if( x < 15 ) a_BlockData[ MakeIndex(x+1, y, z) ] = E_BLOCK_AIR;
|
|
}
|
|
else
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = E_BLOCK_STATIONARY_LAVA;
|
|
}
|
|
}
|
|
else if ((y < 61) && (Top - y < SAND_LEVEL ))
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = E_BLOCK_SAND;
|
|
}
|
|
else if ((y < 61) && (Top - y < 4 ))
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = E_BLOCK_SANDSTONE;
|
|
}
|
|
else if (Top - y > ((WaveNoise + 1.5f) * 1.5f)) // rock and ores between 1.5 .. 4.5 deep
|
|
{
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = BLOCK_STONE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = BLOCK_DIRT;
|
|
}
|
|
} // for y
|
|
|
|
if (Top + 1 >= WATER_LEVEL + SAND_LEVEL)
|
|
{
|
|
// Replace top dirt with grass:
|
|
a_BlockData[MakeIndex(x, Top - 1, z)] = BLOCK_GRASS;
|
|
|
|
// Generate small foliage (1-block):
|
|
int TopY = Top - 1;
|
|
float val1 = Noise.CubicNoise2D(xx * 0.1f, zz * 0.1f );
|
|
float val2 = Noise.CubicNoise2D(xx * 0.01f, zz * 0.01f );
|
|
float val3 = Noise.CubicNoise2D(xx * 0.01f + 10, zz * 0.01f + 10 );
|
|
float val4 = Noise.CubicNoise2D(xx * 0.05f + 20, zz * 0.05f + 20 );
|
|
if ((val3 > 0.2f) && ((r1.randInt()%128) > 124))
|
|
{
|
|
a_BlockData[ MakeIndex(x, TopY + 1, z) ] = E_BLOCK_YELLOW_FLOWER;
|
|
}
|
|
else if ((val4 > 0.2f) && ((r1.randInt() % 128) > 124))
|
|
{
|
|
a_BlockData[ MakeIndex(x, TopY + 1, z) ] = E_BLOCK_RED_ROSE;
|
|
}
|
|
else if ((val1 + val2 + val3 + val4 > 0.2f) && ((r1.randInt() % 128) > 124))
|
|
{
|
|
a_BlockData[ MakeIndex(x, TopY + 1, z) ] = E_BLOCK_RED_MUSHROOM;
|
|
}
|
|
else if ((val1 + val2 + val3 + val4 > 0.2f) && ((r1.randInt() % 128) > 124))
|
|
{
|
|
a_BlockData[ MakeIndex(x, TopY + 1, z) ] = E_BLOCK_BROWN_MUSHROOM;
|
|
}
|
|
} // if (Top above beach-level)
|
|
else if (Top > WATER_LEVEL)
|
|
{
|
|
// This is the sandy shore, generate cacti here
|
|
int index = MakeIndex(x, Top - 1, z);
|
|
int TopY = Top - 1;
|
|
float val1 = Noise.CubicNoise2D(xx * 0.1f, zz * 0.1f );
|
|
float val2 = Noise.CubicNoise2D(xx * 0.01f, zz * 0.01f );
|
|
if ((val1 + val2 > 0.f) && ((r1.randInt() % 128) > 124))
|
|
{
|
|
a_BlockData[ MakeIndex(x, TopY + 1, z) ] = E_BLOCK_CACTUS;
|
|
if ((r1.randInt() & 3) == 3)
|
|
{
|
|
a_BlockData[ MakeIndex(x, TopY + 2, z) ] = E_BLOCK_CACTUS;
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Add water up to the WATER_LEVEL:
|
|
for (int y = Top; y < WATER_LEVEL; ++y )
|
|
{
|
|
a_BlockData[ MakeIndex(x, y, z) ] = E_BLOCK_STATIONARY_WATER;
|
|
}
|
|
} // else (Top is under waterlevel)
|
|
} // for x
|
|
} // for z
|
|
|
|
// Generate ores:
|
|
GenerateOre(E_BLOCK_COAL_ORE, MAX_HEIGHT_COAL, NUM_NESTS_COAL, NEST_SIZE_COAL, a_BlockData);
|
|
GenerateOre(E_BLOCK_IRON_ORE, MAX_HEIGHT_IRON, NUM_NESTS_IRON, NEST_SIZE_IRON, a_BlockData);
|
|
GenerateOre(E_BLOCK_REDSTONE_ORE, MAX_HEIGHT_REDSTONE, NUM_NESTS_REDSTONE, NEST_SIZE_REDSTONE, a_BlockData);
|
|
GenerateOre(E_BLOCK_GOLD_ORE, MAX_HEIGHT_GOLD, NUM_NESTS_GOLD, NEST_SIZE_GOLD, a_BlockData);
|
|
GenerateOre(E_BLOCK_DIAMOND_ORE, MAX_HEIGHT_DIAMOND, NUM_NESTS_DIAMOND, NEST_SIZE_DIAMOND, a_BlockData);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cWorldGenerator::GenerateOre(char a_OreType, int a_MaxHeight, int a_NumNests, int a_NestSize, char * a_BlockData)
|
|
{
|
|
// This function generates several "nests" of ore, each nest consisting of number of ore blocks relatively adjacent to each other.
|
|
// It does so by making a random XYZ walk and adding ore along the way in cuboids of different (random) sizes
|
|
// Only stone gets replaced with ore, all other blocks stay (so the nest can actually be smaller than specified).
|
|
for (int i = 0; i < a_NumNests; i++)
|
|
{
|
|
int BaseX = r1.randInt(16);
|
|
int BaseY = r1.randInt(a_MaxHeight);
|
|
int BaseZ = r1.randInt(16);
|
|
sSetBlockList OreBlocks;
|
|
size_t NestSize = (size_t)(a_NestSize + r1.randInt(a_NestSize / 4)); // The actual nest size may be up to 1/4 larger
|
|
while (OreBlocks.size() < NestSize)
|
|
{
|
|
// Put a cuboid around [BaseX, BaseY, BaseZ]
|
|
for (int x = r1.randInt(2); x >= 0; --x)
|
|
{
|
|
for (int y = r1.randInt(2); y >= 0; --y)
|
|
{
|
|
for (int z = r1.randInt(2); z >= 0; --z)
|
|
{
|
|
if (OreBlocks.size() < NestSize)
|
|
{
|
|
OreBlocks.push_back(sSetBlock(BaseX + x, BaseY + y, BaseZ + z, a_OreType, 0));
|
|
}
|
|
} // for z
|
|
} // for y
|
|
} // for x
|
|
|
|
// Move the base to a neighbor voxel
|
|
switch (r1.randInt(4))
|
|
{
|
|
case 0: BaseX--; break;
|
|
case 1: BaseX++; break;
|
|
}
|
|
switch (r1.randInt(4))
|
|
{
|
|
case 0: BaseY--; break;
|
|
case 1: BaseY++; break;
|
|
}
|
|
switch (r1.randInt(4))
|
|
{
|
|
case 0: BaseZ--; break;
|
|
case 1: BaseZ++; break;
|
|
}
|
|
} // while (OreBlocks.size() < NumBlocks)
|
|
|
|
// Replace stone with the queued ore blocks:
|
|
for (sSetBlockList::iterator itr = OreBlocks.begin(); itr != OreBlocks.end(); ++itr)
|
|
{
|
|
if ((itr->x < 0) || (itr->y < 0) || (itr->z < 0) || (itr->x >= 16) || (itr->y >= 127) || (itr->z >= 16))
|
|
{
|
|
continue;
|
|
}
|
|
int Index = MakeIndex(itr->x, itr->y, itr->z);
|
|
if (a_BlockData[Index] == BLOCK_STONE)
|
|
{
|
|
a_BlockData[Index] = a_OreType;
|
|
}
|
|
} // for itr - OreBlocks[]
|
|
OreBlocks.clear();
|
|
} // for i
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cWorldGenerator::GenerateFoliage(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
|
|
{
|
|
char BlockType[cChunk::c_NumBlocks];
|
|
|
|
if (!m_World->GetChunkBlocks(a_ChunkX, a_ChunkY, a_ChunkZ, BlockType))
|
|
{
|
|
LOGWARNING("Cannot generate foliage on chunk [%d, %d]", a_ChunkX, a_ChunkZ);
|
|
return;
|
|
}
|
|
|
|
cNoise Noise(m_World->GetWorldSeed());
|
|
for (int z = 0; z < 16; z++)
|
|
{
|
|
int zz = z + a_ChunkZ * 16;
|
|
for (int x = 0; x < 16; x++)
|
|
{
|
|
int xx = x + a_ChunkX * 16;
|
|
|
|
int TopY = m_World->GetHeight(xx, zz);
|
|
int index = MakeIndex(x, TopY - 1, z);
|
|
if (BlockType[index] == BLOCK_GRASS)
|
|
{
|
|
float val1 = Noise.CubicNoise2D( xx * 0.1f, zz * 0.1f );
|
|
float val2 = Noise.CubicNoise2D( xx * 0.01f, zz * 0.01f );
|
|
if ((val1 + val2 > 0.2f) && ((r1.randInt() % 128) > 124))
|
|
{
|
|
m_World->GrowTree( xx, TopY, zz );
|
|
}
|
|
} // if (Grass)
|
|
} // for x
|
|
} // for z
|
|
}
|
|
|
|
|
|
|
|
|