diff options
| -rw-r--r-- | doc/lua_api.txt | 9 | ||||
| -rw-r--r-- | src/script/lua_api/l_mapgen.cpp | 22 | ||||
| -rw-r--r-- | src/script/lua_api/l_mapgen.h | 3 |
3 files changed, 34 insertions, 0 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 6fe14472f..0bbf9c79b 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -3035,6 +3035,15 @@ and `minetest.auth_reload` call the authentication handler. unattached `group:attached_node` node to fall. * spread these updates to neighbours and can cause a cascade of nodes to fall. +* `minetest.get_spawn_level(x, z)` + * Returns a player spawn y co-ordinate for the provided (x, z) co-ordinates, + or `nil` for an unsuitable spawn point. + * For most mapgens a 'suitable spawn point' is one with y between + `water_level` and `water_level + 16`, and in mgv7 well away from rivers, + so `nil` will be returned for many (x, z) co-ordinates. + * The spawn level returned is for a player spawn in unmodified terrain. + * The spawn level is intentionally above terrain level to cope with full-node + biome 'dust' nodes. ### Mod channels You can find mod channels communication scheme in `docs/mod_channels.png`. diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp index 11d963b4d..f5c76ec6e 100644 --- a/src/script/lua_api/l_mapgen.cpp +++ b/src/script/lua_api/l_mapgen.cpp @@ -757,6 +757,27 @@ int ModApiMapgen::l_get_mapgen_object(lua_State *L) } +// get_spawn_level(x = num, z = num) +int ModApiMapgen::l_get_spawn_level(lua_State *L) +{ + NO_MAP_LOCK_REQUIRED; + + s16 x = luaL_checkinteger(L, 1); + s16 z = luaL_checkinteger(L, 2); + + EmergeManager *emerge = getServer(L)->getEmergeManager(); + int spawn_level = emerge->getSpawnLevelAtPoint(v2s16(x, z)); + // Unsuitable spawn point + if (spawn_level == MAX_MAP_GENERATION_LIMIT) + return 0; + + // 'findSpawnPos()' in server.cpp adds at least 1 + lua_pushinteger(L, spawn_level + 1); + + return 1; +} + + int ModApiMapgen::l_get_mapgen_params(lua_State *L) { NO_MAP_LOCK_REQUIRED; @@ -1714,6 +1735,7 @@ void ModApiMapgen::Initialize(lua_State *L, int top) API_FCT(get_humidity); API_FCT(get_biome_data); API_FCT(get_mapgen_object); + API_FCT(get_spawn_level); API_FCT(get_mapgen_params); API_FCT(set_mapgen_params); diff --git a/src/script/lua_api/l_mapgen.h b/src/script/lua_api/l_mapgen.h index 713069633..aebbcbac6 100644 --- a/src/script/lua_api/l_mapgen.h +++ b/src/script/lua_api/l_mapgen.h @@ -44,6 +44,9 @@ private: // returns the requested object used during map generation static int l_get_mapgen_object(lua_State *L); + // get_spawn_level(x = num, z = num) + static int l_get_spawn_level(lua_State *L); + // get_mapgen_params() // returns the currently active map generation parameter set static int l_get_mapgen_params(lua_State *L); |