From c683e050d45285f38f822f04eeb65ad6c604c119 Mon Sep 17 00:00:00 2001 From: paramat Date: Wed, 21 Feb 2018 14:34:06 +0000 Subject: Find nodes in area (under air): Raise volume limit and document it --- doc/lua_api.txt | 2 ++ src/script/lua_api/l_env.cpp | 20 ++++++-------------- 2 files changed, 8 insertions(+), 14 deletions(-) diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 73572ac78..04ae33654 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -2578,9 +2578,11 @@ and `minetest.auth_reload` call the authetification handler. * `nodenames`: e.g. `{"ignore", "group:tree"}` or `"default:dirt"` * First return value: Table with all node positions * Second return value: Table with the count of each node with the node name as index + * Area volume is limited to 4,096,000 nodes * `minetest.find_nodes_in_area_under_air(pos1, pos2, nodenames)`: returns a list of positions * `nodenames`: e.g. `{"ignore", "group:tree"}` or `"default:dirt"` * Return value: Table with all node positions with a node air above + * Area volume is limited to 4,096,000 nodes * `minetest.get_perlin(noiseparams)` * `minetest.get_perlin(seeddiff, octaves, persistence, scale)` * Return world-specific perlin noise (`int(worldseed)+seeddiff`) diff --git a/src/script/lua_api/l_env.cpp b/src/script/lua_api/l_env.cpp index 46745facd..4a7885da7 100644 --- a/src/script/lua_api/l_env.cpp +++ b/src/script/lua_api/l_env.cpp @@ -655,14 +655,10 @@ int ModApiEnvMod::l_find_nodes_in_area(lua_State *L) sortBoxVerticies(minp, maxp); v3s16 cube = maxp - minp + 1; - - /* Limit for too large areas, assume default values - * and give tolerances of 1 node on each side - * (chunksize * MAP_BLOCKSIZE + 2)^3 = 551368 - */ - if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 551368) { + // Volume limit equal to 8 default mapchunks, (80 * 2) ^ 3 = 4,096,000 + if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 4096000) { luaL_error(L, "find_nodes_in_area(): area volume" - " exceeds allowed value of 551368"); + " exceeds allowed value of 4096000"); return 0; } @@ -723,14 +719,10 @@ int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L) sortBoxVerticies(minp, maxp); v3s16 cube = maxp - minp + 1; - - /* Limit for too large areas, assume default values - * and give tolerances of 1 node on each side - * (chunksize * MAP_BLOCKSIZE + 2)^3 = 551368 - */ - if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 551368) { + // Volume limit equal to 8 default mapchunks, (80 * 2) ^ 3 = 4,096,000 + if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 4096000) { luaL_error(L, "find_nodes_in_area_under_air(): area volume" - " exceeds allowed value of 551368"); + " exceeds allowed value of 4096000"); return 0; } -- cgit v1.2.3