diff options
| -rw-r--r-- | src/mg_ore.cpp | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/mg_ore.cpp b/src/mg_ore.cpp index 6b6e0d7a7..257901614 100644 --- a/src/mg_ore.cpp +++ b/src/mg_ore.cpp @@ -179,7 +179,12 @@ void OreSheet::generate(MMVManip *vm, int mapseed, u32 blockseed, MapNode n_ore(c_ore, 0, ore_param2); u16 max_height = column_height_max; - int y_start = pr.range(nmin.Y + max_height, nmax.Y - max_height); + int y_start_min = nmin.Y + max_height; + int y_start_max = nmax.Y - max_height; + + int y_start = y_start_min < y_start_max ? + pr.range(y_start_min, y_start_max) : + (y_start_min + y_start_max) / 2; if (!noise) { int sx = nmax.X - nmin.X + 1; @@ -204,10 +209,10 @@ void OreSheet::generate(MMVManip *vm, int mapseed, u32 blockseed, u16 height = pr.range(column_height_min, column_height_max); int ymidpoint = y_start + noiseval; - int y0 = ymidpoint - height * (1 - column_midpoint_factor); - int y1 = y0 + height; + int y0 = MYMAX(nmin.Y, ymidpoint - height * (1 - column_midpoint_factor)); + int y1 = MYMIN(nmax.Y, y0 + height - 1); - for (int y = y0; y < y1; y++) { + for (int y = y0; y <= y1; y++) { u32 i = vm->m_area.index(x, y, z); if (!vm->m_area.contains(i)) continue; |