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voxel-engine
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experimental 3d generation 

a cave-like effect
vertex-deduplication
EmaMaker 2023-03-29 21:39:15 +02:00
parent 40fec8a649
commit b4f3bdad06
1 changed files with 38 additions and 1 deletions
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39
src/chunkgenerator.cpp
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@ -19,10 +19,11 @@
void generatePyramid(Chunk::Chunk *chunk);
void generateNoise(Chunk::Chunk *chunk);
void generateNoise3D(Chunk::Chunk *chunk);
void generateChunk(Chunk::Chunk *chunk)
{
generateNoise(chunk);
generateNoise3D(chunk);
}
Block block;
@ -85,6 +86,42 @@ void generateNoise(Chunk::Chunk *chunk)
chunk->setBlocks(block_prev_start, CHUNK_VOLUME, block_prev);
}
void generateNoise3D(Chunk::Chunk *chunk) {
Block block_prev{Block::AIR};
int block_prev_start{0};
// A space filling curve is continuous, so there is no particular order
for (int s = 0; s < CHUNK_VOLUME; s++)
{
int x = HILBERT_XYZ_DECODE[s][0] + CHUNK_SIZE * chunk->getPosition().x;
int y = HILBERT_XYZ_DECODE[s][1] + CHUNK_SIZE * chunk->getPosition().y;
int z = HILBERT_XYZ_DECODE[s][2] + CHUNK_SIZE * chunk->getPosition().z;
int d2 = HILBERT_XYZ_DECODE[s][0] * CHUNK_SIZE + HILBERT_XYZ_DECODE[s][2];
double noise = noiseGen1.eval(x * 0.025, y*0.025, z * 0.025);
if (noise < 0)
block = Block::STONE;
else if (noise >= 0 && noise < 0.1)
block = Block::DIRT;
else if (noise >= 0.1 && noise < 0.2)
block = Block::GRASS;
else
block = Block::AIR;
if (block != block_prev)
{
chunk->setBlocks(block_prev_start, s, block_prev);
block_prev_start = s;
}
block_prev = block;
}
chunk->setBlocks(block_prev_start, CHUNK_VOLUME, block_prev);
}
void generatePyramid(Chunk::Chunk *chunk)
{
for (int i = 0; i < CHUNK_SIZE; i++)