diff options
Diffstat (limited to 'src/mapgen_v5.cpp')
-rw-r--r-- | src/mapgen_v5.cpp | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/src/mapgen_v5.cpp b/src/mapgen_v5.cpp index bb8c703cc..4f66f943c 100644 --- a/src/mapgen_v5.cpp +++ b/src/mapgen_v5.cpp @@ -192,15 +192,48 @@ void MapgenV5Params::writeParams(Settings *settings) { } +int MapgenV5::getGroundLevelAtPoint(v2s16 p) { + //TimeTaker t("getGroundLevelAtPoint", NULL, PRECISION_MICRO); + + float f = 0.55 + NoisePerlin2D(noise_factor->np, p.X, p.Y, seed); + if(f < 0.01) + f = 0.01; + else if(f >= 1.0) + f *= 1.6; + float h = water_level + NoisePerlin2D(noise_height->np, p.X, p.Y, seed); + + s16 search_top = water_level + 15; + s16 search_base = water_level; + // Use these 2 lines instead for a slower search returning highest ground level + //s16 search_top = h + f * noise_ground->np->octaves * noise_ground->np->scale; + //s16 search_base = h - f * noise_ground->np->octaves * noise_ground->np->scale; + + s16 level = -31000; + for (s16 y = search_top; y >= search_base; y--) { + float n_ground = NoisePerlin3DEased(noise_ground->np, p.X, y, p.Y, seed); + if(n_ground * f > y - h) { + if(y >= search_top - 7) + break; + else + level = y; + break; + } + } + + //printf("getGroundLevelAtPoint: %dus\n", t.stop()); + return level; +} + + void MapgenV5::makeChunk(BlockMakeData *data) { assert(data->vmanip); assert(data->nodedef); assert(data->blockpos_requested.X >= data->blockpos_min.X && - data->blockpos_requested.Y >= data->blockpos_min.Y && - data->blockpos_requested.Z >= data->blockpos_min.Z); + data->blockpos_requested.Y >= data->blockpos_min.Y && + data->blockpos_requested.Z >= data->blockpos_min.Z); assert(data->blockpos_requested.X <= data->blockpos_max.X && - data->blockpos_requested.Y <= data->blockpos_max.Y && - data->blockpos_requested.Z <= data->blockpos_max.Z); + data->blockpos_requested.Y <= data->blockpos_max.Y && + data->blockpos_requested.Z <= data->blockpos_max.Z); generating = true; vm = data->vmanip; |