From 72b93ec0d75e97ec343e5b936b858d686580677d Mon Sep 17 00:00:00 2001 From: Zughy <63455151+Zughy@users.noreply.github.com> Date: Wed, 4 Nov 2020 21:43:18 +0100 Subject: [PATCH] Fix ObjectRef errors due to lua_isnil() (#10564) Treat 'none' values as 'nil' --- src/script/common/helper.cpp | 46 ++++++++++++++++++--------------- src/script/common/helper.h | 5 +++- src/script/lua_api/l_object.cpp | 32 ++++++++--------------- 3 files changed, 40 insertions(+), 43 deletions(-) diff --git a/src/script/common/helper.cpp b/src/script/common/helper.cpp index f53a2b7e8..488144790 100644 --- a/src/script/common/helper.cpp +++ b/src/script/common/helper.cpp @@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #include #include #include +#include #include "c_types.h" #include "c_internal.h" @@ -54,19 +55,16 @@ template <> bool LuaHelper::readParam(lua_State *L, int index) return lua_toboolean(L, index) != 0; } -template <> bool LuaHelper::readParam(lua_State *L, int index, const bool &default_value) -{ - if (lua_isnil(L, index)) - return default_value; - - return lua_toboolean(L, index) != 0; -} - template <> s16 LuaHelper::readParam(lua_State *L, int index) { return lua_tonumber(L, index); } +template <> int LuaHelper::readParam(lua_State *L, int index) +{ + return luaL_checkint(L, index); +} + template <> float LuaHelper::readParam(lua_State *L, int index) { if (isNaN(L, index)) @@ -105,6 +103,25 @@ template <> v2f LuaHelper::readParam(lua_State *L, int index) return p; } +template <> v3f LuaHelper::readParam(lua_State *L, int index) +{ + v3f p; + CHECK_POS_TAB(index); + lua_getfield(L, index, "x"); + CHECK_POS_COORD("x"); + p.X = readParam(L, -1); + lua_pop(L, 1); + lua_getfield(L, index, "y"); + CHECK_POS_COORD("y"); + p.Y = readParam(L, -1); + lua_pop(L, 1); + lua_getfield(L, index, "z"); + CHECK_POS_COORD("z"); + p.Z = readParam(L, -1); + lua_pop(L, 1); + return p; +} + template <> std::string LuaHelper::readParam(lua_State *L, int index) { size_t length; @@ -113,16 +130,3 @@ template <> std::string LuaHelper::readParam(lua_State *L, int index) result.assign(str, length); return result; } - -template <> -std::string LuaHelper::readParam( - lua_State *L, int index, const std::string &default_value) -{ - std::string result; - const char *str = lua_tostring(L, index); - if (str) - result.append(str); - else - result = default_value; - return result; -} diff --git a/src/script/common/helper.h b/src/script/common/helper.h index d639d6e16..7a794dc9b 100644 --- a/src/script/common/helper.h +++ b/src/script/common/helper.h @@ -50,5 +50,8 @@ protected: * @return read value from Lua or default value if nil */ template - static T readParam(lua_State *L, int index, const T &default_value); + static inline T readParam(lua_State *L, int index, const T &default_value) + { + return lua_isnoneornil(L, index) ? default_value : readParam(L, index); + } }; diff --git a/src/script/lua_api/l_object.cpp b/src/script/lua_api/l_object.cpp index beb8dd339..a6a7c05f9 100644 --- a/src/script/lua_api/l_object.cpp +++ b/src/script/lua_api/l_object.cpp @@ -169,11 +169,9 @@ int ObjectRef::l_punch(lua_State *L) if (sao == nullptr || puncher == nullptr) return 0; - float time_from_last_punch = lua_isnil(L, 3) ? - 1000000.0f : readParam(L,3); + float time_from_last_punch = readParam(L, 3, 1000000.0f); ToolCapabilities toolcap = read_tool_capabilities(L, 4); - v3f dir = lua_isnil(L, 5) ? - sao->getBasePosition() - puncher->getBasePosition() : check_v3f(L, 5); + v3f dir = readParam(L, 5, sao->getBasePosition() - puncher->getBasePosition()); dir.normalize(); u16 src_original_hp = sao->getHP(); @@ -383,20 +381,12 @@ int ObjectRef::l_set_animation(lua_State *L) if (sao == nullptr) return 0; - v2f frames = v2f(1, 1); - if (!lua_isnil(L, 2)) - frames = readParam(L, 2); - float frame_speed = 15; - if (!lua_isnil(L, 3)) - frame_speed = lua_tonumber(L, 3); - float frame_blend = 0; - if (!lua_isnil(L, 4)) - frame_blend = lua_tonumber(L, 4); - bool frame_loop = true; - if (lua_isboolean(L, 5)) - frame_loop = readParam(L, 5); + v2f frame_range = readParam(L, 2, v2f(1, 1)); + float frame_speed = readParam(L, 3, 15.0f); + float frame_blend = readParam(L, 4, 0.0f); + bool frame_loop = readParam(L, 5, true); - sao->setAnimation(frames, frame_speed, frame_blend, frame_loop); + sao->setAnimation(frame_range, frame_speed, frame_blend, frame_loop); return 0; } @@ -436,7 +426,7 @@ int ObjectRef::l_set_local_animation(lua_State *L) if (!lua_isnil(L, 2+1)) frames[i] = read_v2s32(L, 2+i); } - float frame_speed = lua_isnil(L, 6) ? 30 : readParam(L, 6); + float frame_speed = readParam(L, 6, 30.0f); getServer(L)->setLocalPlayerAnimations(player, frames, frame_speed); lua_pushboolean(L, true); @@ -965,9 +955,9 @@ int ObjectRef::l_set_sprite(lua_State *L) if (entitysao == nullptr) return 0; - v2s16 start_frame = lua_isnil(L, 2) ? v2s16(0,0) : readParam(L, 2); - int num_frames = lua_isnil(L, 3) ? 1 : luaL_checkint(L, 3); - float framelength = lua_isnil(L, 4) ? 0.2 : lua_tonumber(L, 4); + v2s16 start_frame = readParam(L, 2, v2s16(0,0)); + int num_frames = readParam(L, 3, 1); + float framelength = readParam(L, 4, 0.2f); bool select_x_by_camera = readParam(L, 5, false); entitysao->setSprite(start_frame, num_frames, framelength, select_x_by_camera);