math.floor triggers error if it gets something nil - advtrains.git

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author	Gabriel Pérez-Cerezo <gabriel@gpcf.eu>	2019-07-20 19:43:38 +0200
committer	Gabriel Pérez-Cerezo <gabriel@gpcf.eu>	2019-07-20 19:43:38 +0200
commit	b5e8068a99f9bf1538589614624d05c7614f13cb (patch)
tree	63ca18ff31067ca77ff60e36d1b8a4bbc6fab2fe /assets/manual_img/Bildschirmfoto_2016-09-17_10-10-15.png
parent	896baf8e05c4a17f6c302edbfff27f1e96fa08f0 (diff)
download	advtrains-b5e8068a99f9bf1538589614624d05c7614f13cb.tar.gz advtrains-b5e8068a99f9bf1538589614624d05c7614f13cb.tar.bz2 advtrains-b5e8068a99f9bf1538589614624d05c7614f13cb.zip

math.floor triggers error if it gets something nil

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/* Minetest Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #pragma once #include "irr_v3d.h" #include "lua_api/l_base.h" #include "noise.h" /* LuaPerlinNoise */ class LuaPerlinNoise : public ModApiBase { private: NoiseParams np; static const char className[]; static luaL_Reg methods[]; // Exported functions // garbage collector static int gc_object(lua_State *L); static int l_get_2d(lua_State *L); static int l_get_3d(lua_State *L); public: LuaPerlinNoise(NoiseParams *params); ~LuaPerlinNoise() = default; // LuaPerlinNoise(seed, octaves, persistence, scale) // Creates an LuaPerlinNoise and leaves it on top of stack static int create_object(lua_State *L); static LuaPerlinNoise *checkobject(lua_State *L, int narg); static void Register(lua_State *L); }; /* LuaPerlinNoiseMap */ class LuaPerlinNoiseMap : public ModApiBase { NoiseParams np; Noise *noise; bool m_is3d; static const char className[]; static luaL_Reg methods[]; // Exported functions // garbage collector static int gc_object(lua_State *L); static int l_get_2d_map(lua_State *L); static int l_get_2d_map_flat(lua_State *L); static int l_get_3d_map(lua_State *L); static int l_get_3d_map_flat(lua_State *L); static int l_calc_2d_map(lua_State *L); static int l_calc_3d_map(lua_State *L); static int l_get_map_slice(lua_State *L); public: LuaPerlinNoiseMap(NoiseParams *np, s32 seed, v3s16 size); ~LuaPerlinNoiseMap(); // LuaPerlinNoiseMap(np, size) // Creates an LuaPerlinNoiseMap and leaves it on top of stack static int create_object(lua_State *L); static LuaPerlinNoiseMap *checkobject(lua_State *L, int narg); static void Register(lua_State *L); }; /* LuaPseudoRandom */ class LuaPseudoRandom : public ModApiBase { private: PseudoRandom m_pseudo; static const char className[]; static const luaL_Reg methods[]; // Exported functions // garbage collector static int gc_object(lua_State *L); // next(self, min=0, max=32767) -> get next value static int l_next(lua_State *L); public: LuaPseudoRandom(s32 seed) : m_pseudo(seed) {} // LuaPseudoRandom(seed) // Creates an LuaPseudoRandom and leaves it on top of stack static int create_object(lua_State *L); static LuaPseudoRandom *checkobject(lua_State *L, int narg); static void Register(lua_State *L); }; /* LuaPcgRandom */ class LuaPcgRandom : public ModApiBase { private: PcgRandom m_rnd; static const char className[]; static const luaL_Reg methods[]; // Exported functions // garbage collector static int gc_object(lua_State *L); // next(self, min=-2147483648, max=2147483647) -> get next value static int l_next(lua_State *L); // rand_normal_dist(self, min=-2147483648, max=2147483647, num_trials=6) -> // get next normally distributed random value static int l_rand_normal_dist(lua_State *L); public: LuaPcgRandom(u64 seed) : m_rnd(seed) {} LuaPcgRandom(u64 seed, u64 seq) : m_rnd(seed, seq) {} // LuaPcgRandom(seed) // Creates an LuaPcgRandom and leaves it on top of stack static int create_object(lua_State *L); static LuaPcgRandom *checkobject(lua_State *L, int narg); static void Register(lua_State *L); }; /* LuaSecureRandom */ class LuaSecureRandom : public ModApiBase { private: static const size_t RAND_BUF_SIZE = 2048; static const char className[]; static const luaL_Reg methods[]; u32 m_rand_idx; char m_rand_buf[RAND_BUF_SIZE]; // Exported functions // garbage collector static int gc_object(lua_State *L); // next_bytes(self, count) -> get count many bytes static int l_next_bytes(lua_State *L); public: bool fillRandBuf(); // LuaSecureRandom() // Creates an LuaSecureRandom and leaves it on top of stack static int create_object(lua_State *L); static LuaSecureRandom *checkobject(lua_State *L, int narg); static void Register(lua_State *L); };


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