diff options
Diffstat (limited to 'src/scriptapi.cpp')
| -rw-r--r-- | src/scriptapi.cpp | 194 |
1 files changed, 187 insertions, 7 deletions
diff --git a/src/scriptapi.cpp b/src/scriptapi.cpp index 6e2a0a314..020709cab 100644 --- a/src/scriptapi.cpp +++ b/src/scriptapi.cpp @@ -694,6 +694,30 @@ static NodeBox read_nodebox(lua_State *L, int index) } /* + NoiseParams +*/ +static NoiseParams *read_noiseparams(lua_State *L, int index) +{ + if (index < 0) + index = lua_gettop(L) + 1 + index; + + if (!lua_istable(L, index)) + return NULL; + + NoiseParams *np = new NoiseParams; + + np->offset = getfloatfield_default(L, index, "offset", 0.0); + np->scale = getfloatfield_default(L, index, "scale", 0.0); + lua_getfield(L, index, "spread"); + np->spread = read_v3f(L, -1); + np->seed = getintfield_default(L, index, "seed", 0); + np->octaves = getintfield_default(L, index, "octaves", 0); + np->persist = getfloatfield_default(L, index, "persist", 0.0); + + return np; +} + +/* Groups */ static void read_groups(lua_State *L, int index, @@ -3241,11 +3265,6 @@ static void objectref_get_or_create(lua_State *L, } } - -/* - PerlinNoise - */ - class LuaPerlinNoise { private: @@ -3356,6 +3375,145 @@ const luaL_reg LuaPerlinNoise::methods[] = { }; /* + PerlinNoiseMap + */ +class LuaPerlinNoiseMap +{ +private: + Noise *noise; + static const char className[]; + static const luaL_reg methods[]; + + static int gc_object(lua_State *L) + { + LuaPerlinNoiseMap *o = *(LuaPerlinNoiseMap **)(lua_touserdata(L, 1)); + delete o; + return 0; + } + + static int l_get2dMap(lua_State *L) + { + int i = 0; + + LuaPerlinNoiseMap *o = checkobject(L, 1); + v2f p = read_v2f(L, 2); + + Noise *n = o->noise; + n->perlinMap2D(p.X, p.Y); + + lua_newtable(L); + for (int y = 0; y != n->sy; y++) { + lua_newtable(L); + for (int x = 0; x != n->sx; x++) { + float noiseval = n->np->offset + n->np->scale * n->result[i++]; + lua_pushnumber(L, noiseval); + lua_rawseti(L, -2, x + 1); + } + lua_rawseti(L, -2, y + 1); + } + return 1; + } + + static int l_get3dMap(lua_State *L) + { + int i = 0; + + LuaPerlinNoiseMap *o = checkobject(L, 1); + v3f p = read_v3f(L, 2); + + Noise *n = o->noise; + n->perlinMap3D(p.X, p.Y, p.Z); + + lua_newtable(L); + for (int z = 0; z != n->sz; z++) { + lua_newtable(L); + for (int y = 0; y != n->sy; y++) { + lua_newtable(L); + for (int x = 0; x != n->sx; x++) { + lua_pushnumber(L, n->np->offset + n->np->scale * n->result[i++]); + lua_rawseti(L, -2, x + 1); + } + lua_rawseti(L, -2, y + 1); + } + lua_rawseti(L, -2, z + 1); + } + return 1; + } + +public: + LuaPerlinNoiseMap(NoiseParams *np, int seed, v3s16 size) { + noise = new Noise(np, seed, size.X, size.Y, size.Z); + } + + ~LuaPerlinNoiseMap() + { + delete noise->np; + delete noise; + } + + // LuaPerlinNoiseMap(np, size) + // Creates an LuaPerlinNoiseMap and leaves it on top of stack + static int create_object(lua_State *L) + { + NoiseParams *np = read_noiseparams(L, 1); + if (!np) + return 0; + v3s16 size = read_v3s16(L, 2); + + LuaPerlinNoiseMap *o = new LuaPerlinNoiseMap(np, 0, size); + *(void **)(lua_newuserdata(L, sizeof(void *))) = o; + luaL_getmetatable(L, className); + lua_setmetatable(L, -2); + return 1; + } + + static LuaPerlinNoiseMap *checkobject(lua_State *L, int narg) + { + luaL_checktype(L, narg, LUA_TUSERDATA); + + void *ud = luaL_checkudata(L, narg, className); + if (!ud) + luaL_typerror(L, narg, className); + + return *(LuaPerlinNoiseMap **)ud; // unbox pointer + } + + static void Register(lua_State *L) + { + lua_newtable(L); + int methodtable = lua_gettop(L); + luaL_newmetatable(L, className); + int metatable = lua_gettop(L); + + lua_pushliteral(L, "__metatable"); + lua_pushvalue(L, methodtable); + lua_settable(L, metatable); // hide metatable from Lua getmetatable() + + lua_pushliteral(L, "__index"); + lua_pushvalue(L, methodtable); + lua_settable(L, metatable); + + lua_pushliteral(L, "__gc"); + lua_pushcfunction(L, gc_object); + lua_settable(L, metatable); + + lua_pop(L, 1); // drop metatable + + luaL_openlib(L, 0, methods, 0); // fill methodtable + lua_pop(L, 1); // drop methodtable + + // Can be created from Lua (PerlinNoiseMap(np, size) + lua_register(L, className, create_object); + } +}; +const char LuaPerlinNoiseMap::className[] = "PerlinNoiseMap"; +const luaL_reg LuaPerlinNoiseMap::methods[] = { + method(LuaPerlinNoiseMap, get2dMap), + method(LuaPerlinNoiseMap, get3dMap), + {0,0} +}; + +/* NodeTimerRef */ @@ -4019,6 +4177,28 @@ private: lua_setmetatable(L, -2); return 1; } + + // EnvRef:get_perlin_map(noiseparams, size) + // returns world-specific PerlinNoiseMap + static int l_get_perlin_map(lua_State *L) + { + EnvRef *o = checkobject(L, 1); + ServerEnvironment *env = o->m_env; + if (env == NULL) + return 0; + + NoiseParams *np = read_noiseparams(L, 2); + if (!np) + return 0; + v3s16 size = read_v3s16(L, 3); + + int seed = (int)(env->getServerMap().getSeed()); + LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(np, seed, size); + *(void **)(lua_newuserdata(L, sizeof(void *))) = n; + luaL_getmetatable(L, "PerlinNoiseMap"); + lua_setmetatable(L, -2); + return 1; + } // EnvRef:clear_objects() // clear all objects in the environment @@ -4158,8 +4338,7 @@ const luaL_reg EnvRef::methods[] = { method(EnvRef, find_node_near), method(EnvRef, find_nodes_in_area), method(EnvRef, get_perlin), - //method{EnvRef, get_perlin_map_2d}, - //method{EnvRef, get_perlin_map_3d}, + method(EnvRef, get_perlin_map), method(EnvRef, clear_objects), method(EnvRef, spawn_tree), {0,0} @@ -5424,6 +5603,7 @@ void scriptapi_export(lua_State *L, Server *server) EnvRef::Register(L); LuaPseudoRandom::Register(L); LuaPerlinNoise::Register(L); + LuaPerlinNoiseMap::Register(L); } bool scriptapi_loadmod(lua_State *L, const std::string &scriptpath, |