diff options
| -rw-r--r-- | src/map.cpp | 21 | ||||
| -rw-r--r-- | src/mapblock.h | 29 |
2 files changed, 36 insertions, 14 deletions
diff --git a/src/map.cpp b/src/map.cpp index 53657ce6b..d4115887f 100644 --- a/src/map.cpp +++ b/src/map.cpp @@ -2064,15 +2064,26 @@ ServerMapSector *ServerMap::createSector(v2s16 p2d) return sector; } #endif + /* - Do not create over-limit + Do not create over-limit. + We are checking for any nodes of the mapblocks of the sector being beyond the limit. + A sector is a vertical column of mapblocks, so sectorpos is like a 2D blockpos. + + At the negative limit we are checking for + block minimum nodepos < -mapgenlimit. + At the positive limit we are checking for + block maximum nodepos > mapgenlimit. + + Block minimum nodepos = blockpos * mapblocksize. + Block maximum nodepos = (blockpos + 1) * mapblocksize - 1. */ const static u16 map_gen_limit = MYMIN(MAX_MAP_GENERATION_LIMIT, g_settings->getU16("map_generation_limit")); - if(p2d.X < -map_gen_limit / MAP_BLOCKSIZE - || p2d.X > map_gen_limit / MAP_BLOCKSIZE - || p2d.Y < -map_gen_limit / MAP_BLOCKSIZE - || p2d.Y > map_gen_limit / MAP_BLOCKSIZE) + if (p2d.X * MAP_BLOCKSIZE < -map_gen_limit + || (p2d.X + 1) * MAP_BLOCKSIZE - 1 > map_gen_limit + || p2d.Y * MAP_BLOCKSIZE < -map_gen_limit + || (p2d.Y + 1) * MAP_BLOCKSIZE - 1 > map_gen_limit) throw InvalidPositionException("createSector(): pos. over limit"); /* diff --git a/src/mapblock.h b/src/mapblock.h index c737b4c37..d46b7b880 100644 --- a/src/mapblock.h +++ b/src/mapblock.h @@ -656,23 +656,34 @@ inline bool objectpos_over_limit(v3f p) const static float map_gen_limit_bs = MYMIN(MAX_MAP_GENERATION_LIMIT, g_settings->getU16("map_generation_limit")) * BS; return (p.X < -map_gen_limit_bs - || p.X > map_gen_limit_bs + || p.X > map_gen_limit_bs || p.Y < -map_gen_limit_bs - || p.Y > map_gen_limit_bs + || p.Y > map_gen_limit_bs || p.Z < -map_gen_limit_bs - || p.Z > map_gen_limit_bs); + || p.Z > map_gen_limit_bs); } +/* + We are checking for any node of the mapblock being beyond the limit. + + At the negative limit we are checking for + block minimum nodepos < -mapgenlimit. + At the positive limit we are checking for + block maximum nodepos > mapgenlimit. + + Block minimum nodepos = blockpos * mapblocksize. + Block maximum nodepos = (blockpos + 1) * mapblocksize - 1. +*/ inline bool blockpos_over_limit(v3s16 p) { const static u16 map_gen_limit = MYMIN(MAX_MAP_GENERATION_LIMIT, g_settings->getU16("map_generation_limit")); - return (p.X < -map_gen_limit / MAP_BLOCKSIZE - || p.X > map_gen_limit / MAP_BLOCKSIZE - || p.Y < -map_gen_limit / MAP_BLOCKSIZE - || p.Y > map_gen_limit / MAP_BLOCKSIZE - || p.Z < -map_gen_limit / MAP_BLOCKSIZE - || p.Z > map_gen_limit / MAP_BLOCKSIZE); + return (p.X * MAP_BLOCKSIZE < -map_gen_limit + || (p.X + 1) * MAP_BLOCKSIZE - 1 > map_gen_limit + || p.Y * MAP_BLOCKSIZE < -map_gen_limit + || (p.Y + 1) * MAP_BLOCKSIZE - 1 > map_gen_limit + || p.Z * MAP_BLOCKSIZE < -map_gen_limit + || (p.Z + 1) * MAP_BLOCKSIZE - 1 > map_gen_limit); } /* |