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| author | paramat <mat.gregory@virginmedia.com> | 2015-10-21 08:51:59 +0100 |
|---|---|---|
| committer | paramat <mat.gregory@virginmedia.com> | 2015-10-23 21:30:20 +0100 |
| commit | 59fa117d13ba881f6f5e77c94f5a4ce6adb9647f (patch) | |
| tree | 43c26bb908a117de4471a442626812fea942c3ea /src/mapgen.cpp | |
| parent | c32847838d72c327031520c48b76607b63da4ccc (diff) | |
| download | minetest-59fa117d13ba881f6f5e77c94f5a4ce6adb9647f.tar.gz minetest-59fa117d13ba881f6f5e77c94f5a4ce6adb9647f.tar.bz2 minetest-59fa117d13ba881f6f5e77c94f5a4ce6adb9647f.zip | |
Decoration API: Add flag for placement on liquid surface
Add findLiquidSurface() function to mapgen.cpp
Update lua_api.txt
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) |