diff options
Diffstat (limited to 'src/mapgen.cpp')
| -rw-r--r-- | src/mapgen.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mapgen.cpp b/src/mapgen.cpp index f5046459e..8a77000fa 100644 --- a/src/mapgen.cpp +++ b/src/mapgen.cpp @@ -161,6 +161,26 @@ s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) } +// Returns -MAX_MAP_GENERATION_LIMIT if not found or if ground is found first +s16 Mapgen::findLiquidSurface(v2s16 p2d, s16 ymin, s16 ymax) +{ + v3s16 em = vm->m_area.getExtent(); + u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y); + s16 y; + + for (y = ymax; y >= ymin; y--) { + MapNode &n = vm->m_data[i]; + if (ndef->get(n).walkable) + return -MAX_MAP_GENERATION_LIMIT; + else if (ndef->get(n).isLiquid()) + break; + + vm->m_area.add_y(em, i, -1); + } + return (y >= ymin) ? y : -MAX_MAP_GENERATION_LIMIT; +} + + void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) { if (!heightmap) |