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Dungeons: Settable density noise, move number calculation to mapgens (#8473)

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Add user-settable noise parameters for dungeon density to each mapgen,
except V6 which hardcodes this noise parameter.

Move the calculation of number of dungeons generated in a mapchunk out
of dungeongen.cpp and into mapgen code, to allow mapgens to generate
any desired number of dungeons in a mapchunk, instead of being forced
to have number of dungeons determined by a density noise.

This is more flexible and allows mapgens to use dungeon generation to
create custom structures, such as occasional mega-dungeons.
This commit is contained in:
Paramat 2019-06-01 20:50:43 +01:00 • committed by GitHub
parent a1459a9eac
commit 7379aa74cf
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 154 additions and 95 deletions
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12
src/mapgen/mapgen.cpp
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@ -19,6 +19,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <cmath>
#include "mapgen.h"
#include "voxel.h"
#include "noise.h"
@ -889,6 +890,11 @@ void MapgenBasic::generateDungeons(s16 max_stone_y)
if (max_stone_y < node_min.Y)
return;
u16 num_dungeons = std::fmax(std::floor(
NoisePerlin3D(&np_dungeons, node_min.X, node_min.Y, node_min.Z, seed)), 0.0f);
if (num_dungeons == 0)
return;
// Get biome at mapchunk midpoint
v3s16 chunk_mid = node_min + (node_max - node_min) / v3s16(2, 2, 2);
Biome *biome = (Biome *)biomegen->getBiomeAtPoint(chunk_mid);
@ -902,8 +908,8 @@ void MapgenBasic::generateDungeons(s16 max_stone_y)
dp.rooms_min = 2;
dp.rooms_max = 16;
dp.np_density = nparams_dungeon_density;
dp.np_alt_wall = nparams_dungeon_alt_wall;
dp.np_alt_wall =
NoiseParams(-0.4, 1.0, v3f(40.0, 40.0, 40.0), 32474, 6, 1.1, 2.0);
// Biome-defined dungeon nodes
if (biome->c_dungeon != CONTENT_IGNORE) {
@ -980,7 +986,7 @@ void MapgenBasic::generateDungeons(s16 max_stone_y)
}
DungeonGen dgen(ndef, &gennotify, &dp);
dgen.generate(vm, blockseed, full_node_min, full_node_max);
dgen.generate(vm, blockseed, full_node_min, full_node_max, num_dungeons);
}