Dungeongen: Remove most hardcoded dungeon nodes (#8594)

Biome-defined dungeon nodes was added as a feature to MT 5.0.0.
So now remove most of the hardcoded dungeon node code that assumes a
game has stone, sandstone, desert stone, and no other stone types.
If biome-defined dungeon nodes are not found, dungeon nodes fall back
to the 'cobble' mapgen alias if present, if not present they fall back
to biome-defined 'stone'.
Remove now-unnecessary mapgen aliases from MapgenBasic. Non-mgv6 games
now only need to define 3 to 5 mapgen aliases.

Document dungeon parameters.

Make c_lava_source fallback to c_water_source as both are used as cave
liquids.

1 files changed, 0 insertions, 10 deletions

diff --git a/src/mapgen/mapgen.h b/src/mapgen/mapgen.h
index 2fc3aed95..f98c3f377 100644
--- a/src/mapgen/mapgen.h
+++ b/src/mapgen/mapgen.h
@@ -257,21 +257,11 @@ protected:
 	v3s16 full_node_min;
 	v3s16 full_node_max;
 
-	// Content required for generateBiomes
 	content_t c_stone;
-	content_t c_desert_stone;
-	content_t c_sandstone;
 	content_t c_water_source;
 	content_t c_river_water_source;
 	content_t c_lava_source;
-
-	// Content required for generateDungeons
 	content_t c_cobble;
-	content_t c_stair_cobble;
-	content_t c_mossycobble;
-	content_t c_stair_desert_stone;
-	content_t c_sandstonebrick;
-	content_t c_stair_sandstone_block;
 
 	int ystride;
 	int zstride;