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

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.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/mapgen/dungeongen.h b/src/mapgen/dungeongen.h
index 7d04a6254..2c20446fd 100644
--- a/src/mapgen/dungeongen.h
+++ b/src/mapgen/dungeongen.h
@@ -58,7 +58,6 @@ struct DungeonParams {
 	u16 rooms_max;
 	GenNotifyType notifytype;
 
-	NoiseParams np_density;
 	NoiseParams np_alt_wall;
 };
 
@@ -83,7 +82,7 @@ public:
 		GenerateNotifier *gennotify, DungeonParams *dparams);
 
 	void generate(MMVManip *vm, u32 bseed,
-		v3s16 full_node_min, v3s16 full_node_max);
+		v3s16 full_node_min, v3s16 full_node_max, u16 num_dungeons);
 
 	void makeDungeon(v3s16 start_padding);
 	void makeRoom(v3s16 roomsize, v3s16 roomplace);