/* Minetest Copyright (C) 2013 celeron55, Perttu Ahola 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. */ #include "common/c_content.h" #include "common/c_converter.h" #include "common/c_types.h" #include "nodedef.h" #include "object_properties.h" #include "collision.h" #include "cpp_api/s_node.h" #include "lua_api/l_object.h" #include "lua_api/l_item.h" #include "common/c_internal.h" #include "server.h" #include "log.h" #include "tool.h" #include "porting.h" #include "mapgen/mg_schematic.h" #include "noise.h" #include "server/player_sao.h" #include "util/pointedthing.h" #include "debug.h" // For FATAL_ERROR #include struct EnumString es_TileAnimationType[] = { {TAT_NONE, "none"}, {TAT_VERTICAL_FRAMES, "vertical_frames"}, {TAT_SHEET_2D, "sheet_2d"}, {0, NULL}, }; /******************************************************************************/ void read_item_definition(lua_State* L, int index, const ItemDefinition &default_def, ItemDefinition &def) { if (index < 0) index = lua_gettop(L) + 1 + index; def.type = (ItemType)getenumfield(L, index, "type", es_ItemType, ITEM_NONE); getstringfield(L, index, "name", def.name); getstringfield(L, index, "description", def.description); getstringfield(L, index, "inventory_image", def.inventory_image); getstringfield(L, index, "inventory_overlay", def.inventory_overlay); getstringfield(L, index, "wield_image", def.wield_image); getstringfield(L, index, "wield_overlay", def.wield_overlay); getstringfield(L, index, "palette", def.palette_image); // Read item color. lua_getfield(L, index, "color"); read_color(L, -1, &def.color); lua_pop(L, 1); lua_getfield(L, index, "wield_scale"); if(lua_istable(L, -1)){ def.wield_scale = check_v3f(L, -1); } lua_pop(L, 1); int stack_max = getintfield_default(L, index, "stack_max", def.stack_max); def.stack_max = rangelim(stack_max, 1, U16_MAX); lua_getfield(L, index, "on_use"); def.usable = lua_isfunction(L, -1); lua_pop(L, 1); getboolfield(L, index, "liquids_pointable", def.liquids_pointable); warn_if_field_exists(L, index, "tool_digging_properties", "Obsolete; use tool_capabilities"); lua_getfield(L, index, "tool_capabilities"); if(lua_istable(L, -1)){ def.tool_capabilities = new ToolCapabilities( read_tool_capabilities(L, -1)); } // If name is "" (hand), ensure there are ToolCapabilities // because it will be looked up there whenever any other item has // no ToolCapabilities if (def.name.empty() && def.tool_capabilities == NULL){ def.tool_capabilities = new ToolCapabilities(); } lua_getfield(L, index, "groups"); read_groups(L, -1, def.groups); lua_pop(L, 1); lua_getfield(L, index, "sounds"); if (!lua_isnil(L, -1)) { luaL_checktype(L, -1, LUA_TTABLE); lua_getfield(L, -1, "place"); read_soundspec(L, -1, def.sound_place); lua_pop(L, 1); lua_getfield(L, -1, "place_failed"); read_soundspec(L, -1, def.sound_place_failed); lua_pop(L, 1); } lua_pop(L, 1); def.range = getfloatfield_default(L, index, "range", def.range); // Client shall immediately place this node when player places the item. // Server will update the precise end result a moment later. // "" = no prediction getstringfield(L, index, "node_placement_prediction", def.node_placement_prediction); } /******************************************************************************/ void push_item_definition(lua_State *L, const ItemDefinition &i) { lua_newtable(L); lua_pushstring(L, i.name.c_str()); lua_setfield(L, -2, "name"); lua_pushstring(L, i.description.c_str()); lua_setfield(L, -2, "description"); } void push_item_definition_full(lua_State *L, const ItemDefinition &i) { std::string type(es_ItemType[(int)i.type].str); lua_newtable(L); lua_pushstring(L, i.name.c_str()); lua_setfield(L, -2, "name"); lua_pushstring(L, i.description.c_str()); lua_setfield(L, -2, "description"); lua_pushstring(L, type.c_str()); lua_setfield(L, -2, "type"); lua_pushstring(L, i.inventory_image.c_str()); lua_setfield(L, -2, "inventory_image"); lua_pushstring(L, i.inventory_overlay.c_str()); lua_setfield(L, -2, "inventory_overlay"); lua_pushstring(L, i.wield_image.c_str()); lua_setfield(L, -2, "wield_image"); lua_pushstring(L, i.wield_overlay.c_str()); lua_setfield(L, -2, "wield_overlay"); lua_pushstring(L, i.palette_image.c_str()); lua_setfield(L, -2, "palette_image"); push_ARGB8(L, i.color); lua_setfield(L, -2, "color"); push_v3f(L, i.wield_scale); lua_setfield(L, -2, "wield_scale"); lua_pushinteger(L, i.stack_max); lua_setfield(L, -2, "stack_max"); lua_pushboolean(L, i.usable); lua_setfield(L, -2, "usable"); lua_pushboolean(L, i.liquids_pointable); lua_setfield(L, -2, "liquids_pointable"); if (i.tool_capabilities) { push_tool_capabilities(L, *i.tool_capabilities); lua_setfield(L, -2, "tool_capabilities"); } push_groups(L, i.groups); lua_setfield(L, -2, "groups"); push_soundspec(L, i.sound_place); lua_setfield(L, -2, "sound_place"); push_soundspec(L, i.sound_place_failed); lua_setfield(L, -2, "sound_place_failed"); lua_pushstring(L, i.node_placement_prediction.c_str()); lua_setfield(L, -2, "node_placement_prediction"); } /******************************************************************************/ void read_object_properties(lua_State *L, int index, ServerActiveObject *sao, ObjectProperties *prop, IItemDefManager *idef) { if(index < 0) index = lua_gettop(L) + 1 + index; if (lua_isnil(L, index)) return; luaL_checktype(L, -1, LUA_TTABLE); int hp_max = 0; if (getintfield(L, -1, "hp_max", hp_max)) { prop->hp_max = (u16)rangelim(hp_max, 0, U16_MAX); if (prop->hp_max < sao->getHP()) { PlayerHPChangeReason reason(PlayerHPChangeReason::SET_HP); sao->setHP(prop->hp_max, reason); if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) sao->getEnv()->getGameDef()->SendPlayerHPOrDie((PlayerSAO *)sao, reason); } } if (getintfield(L, -1, "breath_max", prop->breath_max)) { if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) { PlayerSAO *player = (PlayerSAO *)sao; if (prop->breath_max < player->getBreath()) player->setBreath(prop->breath_max); } } getboolfield(L, -1, "physical", prop->physical); getboolfield(L, -1, "collide_with_objects", prop->collideWithObjects); lua_getfield(L, -1, "collisionbox"); bool collisionbox_defined = lua_istable(L, -1); if (collisionbox_defined) prop->collisionbox = read_aabb3f(L, -1, 1.0); lua_pop(L, 1); lua_getfield(L, -1, "selectionbox"); if (lua_istable(L, -1)) prop->selectionbox = read_aabb3f(L, -1, 1.0); else if (collisionbox_defined) prop->selectionbox = prop->collisionbox; lua_pop(L, 1); getboolfield(L, -1, "pointable", prop->pointable); getstringfield(L, -1, "visual", prop->visual); getstringfield(L, -1, "mesh", prop->mesh); lua_getfield(L, -1, "visual_size"); if (lua_istable(L, -1)) { // Backwards compatibility: Also accept { x = ?, y = ? } v2f scale_xy = read_v2f(L, -1); f32 scale_z = scale_xy.X; lua_getfield(L, -1, "z"); if (lua_isnumber(L, -1)) scale_z = lua_tonumber(L, -1); lua_pop(L, 1); prop->visual_size = v3f(scale_xy.X, scale_xy.Y, scale_z); } lua_pop(L, 1); lua_getfield(L, -1, "textures"); if(lua_istable(L, -1)){ prop->textures.clear(); int table = lua_gettop(L); lua_pushnil(L); while(lua_next(L, table) != 0){ // key at index -2 and value at index -1 if(lua_isstring(L, -1)) prop->textures.emplace_back(lua_tostring(L, -1)); else prop->textures.emplace_back(""); // removes value, keeps key for next iteration lua_pop(L, 1); } } lua_pop(L, 1); lua_getfield(L, -1, "colors"); if (lua_istable(L, -1)) { int table = lua_gettop(L); prop->colors.clear(); for (lua_pushnil(L); lua_next(L, table); lua_pop(L, 1)) { video::SColor color(255, 255, 255, 255); read_color(L, -1, &color); prop->colors.push_back(color); } } lua_pop(L, 1); lua_getfield(L, -1, "spritediv"); if(lua_istable(L, -1)) prop->spritediv = read_v2s16(L, -1); lua_pop(L, 1); lua_getfield(L, -1, "initial_sprite_basepos"); if(lua_istable(L, -1)) prop->initial_sprite_basepos = read_v2s16(L, -1); lua_pop(L, 1); getboolfield(L, -1, "is_visible", prop->is_visible); getboolfield(L, -1, "makes_footstep_sound", prop->makes_footstep_sound); if (getfloatfield(L, -1, "stepheight", prop->stepheight)) prop->stepheight *= BS; getfloatfield(L, -1, "eye_height", prop->eye_height); getfloatfield(L, -1, "automatic_rotate", prop->automatic_rotate); lua_getfield(L, -1, "automatic_face_movement_dir"); if (lua_isnumber(L, -1)) { prop->automatic_face_movement_dir = true; prop->automatic_face_movement_dir_offset = luaL_checknumber(L, -1); } else if (lua_isboolean(L, -1)) { prop->automatic_face_movement_dir = lua_toboolean(L, -1); prop->automatic_face_movement_dir_offset = 0.0; } lua_pop(L, 1); getboolfield(L, -1, "backface_culling", prop->backface_culling); getintfield(L, -1, "glow", prop->glow); getstringfield(L, -1, "nametag", prop->nametag); lua_getfield(L, -1, "nametag_color"); if (!lua_isnil(L, -1)) { video::SColor color = prop->nametag_color; if (read_color(L, -1, &color)) prop->nametag_color = color; } lua_pop(L, 1); lua_getfield(L, -1, "automatic_face_movement_max_rotation_per_sec"); if (lua_isnumber(L, -1)) { prop->automatic_face_movement_max_rotation_per_sec = luaL_checknumber(L, -1); } lua_pop(L, 1); getstringfield(L, -1, "infotext", prop->infotext); getboolfield(L, -1, "static_save", prop->static_save); lua_getfield(L, -1, "wield_item"); if (!lua_isnil(L, -1)) prop->wield_item = read_item(L, -1, idef).getItemString(); lua_pop(L, 1); getfloatfield(L, -1, "zoom_fov", prop->zoom_fov); getboolfield(L, -1, "use_texture_alpha", prop->use_texture_alpha); getboolfield(L, -1, "shaded", prop->shaded); getstringfield(L, -1, "damage_texture_modifier", prop->damage_texture_modifier); } /******************************************************************************/ void push_object_properties(lua_State *L, ObjectProperties *prop) { lua_newtable(L); lua_pushnumber(L, prop->hp_max); lua_setfield(L, -2, "hp_max"); lua_pushnumber(L, prop->breath_max); lua_setfield(L, -2, "breath_max"); lua_pushboolean(L, prop->physical); lua_setfield(L, -2, "physical"); lua_pushboolean(L, prop->collideWithObjects); lua_setfield(L, -2, "collide_with_objects"); push_aabb3f(L, prop->collisionbox); lua_setfield(L, -2, "collisionbox"); push_aabb3f(L, prop->selectionbox); lua_setfield(L, -2, "selectionbox"); lua_pushboolean(L, prop->pointable); lua_setfield(L, -2, "pointable"); lua_pushlstring(L, prop->visual.c_str(), prop->visual.size()); lua_setfield(L, -2, "visual"); lua_pushlstring(L, prop->mesh.c_str(), prop->mesh.size()); lua_setfield(L, -2, "mesh"); push_v3f(L, prop->visual_size); lua_setfield(L, -2, "visual_size"); lua_createtable(L, prop->textures.size(), 0); u16 i = 1; for (const std::string &texture : prop->textures) { lua_pushlstring(L, texture.c_str(), texture.size()); lua_rawseti(L, -2, i++); } lua_setfield(L, -2, "textures"); lua_createtable(L, prop->colors.size(), 0); i = 1; for (const video::SColor &color : prop->colors) { push_ARGB8(L, color); lua_rawseti(L, -2, i++); } lua_setfield(L, -2, "colors"); push_v2s16(L, prop->spritediv); lua_setfield(L, -2, "spritediv"); push_v2s16(L, prop->initial_sprite_basepos); lua_setfield(L, -2, "initial_sprite_basepos"); lua_pushboolean(L, prop->is_visible); lua_setfield(L, -2, "is_visible"); lua_pushboolean(L, prop->makes_footstep_sound); lua_setfield(L, -2, "makes_footstep_sound"); lua_pushnumber(L, prop->stepheight / BS); lua_setfield(L, -2, "stepheight"); lua_pushnumber(L, prop->eye_height); lua_setfield(L, -2, "eye_height"); lua_pushnumber(L, prop->automatic_rotate); lua_setfield(L, -2, "automatic_rotate"); if (prop->automatic_face_movement_dir) lua_pushnumber(L, prop->automatic_face_movement_dir_offset); else lua_pushboolean(L, false); lua_setfield(L, -2, "automatic_face_movement_dir"); lua_pushboolean(L, prop->backface_culling); lua_setfield(L, -2, "backface_culling"); lua_pushnumber(L, prop->glow); lua_setfield(L, -2, "glow"); lua_pushlstring(L, prop->nametag.c_str(), prop->nametag.size()); lua_setfield(L, -2, "nametag"); push_ARGB8(L, prop->nametag_color); lua_setfield(L, -2, "nametag_color"); lua_pushnumber(L, prop->automatic_face_movement_max_rotation_per_sec); lua_setfield(L, -2, "automatic_face_movement_max_rotation_per_sec"); lua_pushlstring(L, prop->infotext.c_str(), prop->infotext.size()); lua_setfield(L, -2, "infotext"); lua_pushboolean(L, prop->static_save); lua_setfield(L, -2, "static_save"); lua_pushlstring(L, prop->wield_item.c_str(), prop->wield_item.size()); lua_setfield(L, -2, "wield_item"); lua_pushnumber(L, prop->zoom_fov); lua_setfield(L, -2, "zoom_fov"); lua_pushboolean(L, prop->use_texture_alpha); lua_setfield(L, -2, "use_texture_alpha"); lua_pushboolean(L, prop->shaded); lua_setfield(L, -2, "shaded"); lua_pushlstring(L, prop->damage_texture_modifier.c_str(), prop->damage_texture_modifier.size()); lua_setfield(L, -2, "damage_texture_modifier"); } /******************************************************************************/ TileDef read_tiledef(lua_State *L, int index, u8 drawtype) { if(index < 0) index = lua_gettop(L) + 1 + index; TileDef tiledef; bool default_tiling = true; bool default_culling = true; switch (drawtype) { case NDT_PLANTLIKE: case NDT_PLANTLIKE_ROOTED: case NDT_FIRELIKE: default_tiling = false; // "break" is omitted here intentionaly, as PLANTLIKE // FIRELIKE drawtype both should default to having // backface_culling to false. case NDT_MESH: case NDT_LIQUID: default_culling = false; break; default: break; } // key at index -2 and value at index if(lua_isstring(L, index)){ // "default_lava.png" tiledef.name = lua_tostring(L, index); tiledef.tileable_vertical = default_tiling; tiledef.tileable_horizontal = default_tiling; tiledef.backface_culling = default_culling; } else if(lua_istable(L, index)) { // name="default_lava.png" tiledef.name = ""; getstringfield(L, index, "name", tiledef.name); getstringfield(L, index, "image", tiledef.name); // MaterialSpec compat. tiledef.backface_culling = getboolfield_default( L, index, "backface_culling", default_culling); tiledef.tileable_horizontal = getboolfield_default( L, index, "tileable_horizontal", default_tiling); tiledef.tileable_vertical = getboolfield_default( L, index, "tileable_vertical", default_tiling); std::string align_style; if (getstringfield(L, index, "align_style", align_style)) { if (align_style == "user") tiledef.align_style = ALIGN_STYLE_USER_DEFINED; else if (align_style == "world") tiledef.align_style = ALIGN_STYLE_WORLD; else tiledef.align_style = ALIGN_STYLE_NODE; } tiledef.scale = getintfield_default(L, index, "scale", 0); // color = ... lua_getfield(L, index, "color"); tiledef.has_color = read_color(L, -1, &tiledef.color); lua_pop(L, 1); // animation = {} lua_getfield(L, index, "animation"); tiledef.animation = read_animation_definition(L, -1); lua_pop(L, 1); } return tiledef; } /******************************************************************************/ ContentFeatures read_content_features(lua_State *L, int index) { if(index < 0) index = lua_gettop(L) + 1 + index; ContentFeatures f; /* Cache existence of some callbacks */ lua_getfield(L, index, "on_construct"); if(!lua_isnil(L, -1)) f.has_on_construct = true; lua_pop(L, 1); lua_getfield(L, index, "on_destruct"); if(!lua_isnil(L, -1)) f.has_on_destruct = true; lua_pop(L, 1); lua_getfield(L, index, "after_destruct"); if(!lua_isnil(L, -1)) f.has_after_destruct = true; lua_pop(L, 1); lua_getfield(L, index, "on_rightclick"); f.rightclickable = lua_isfunction(L, -1); lua_pop(L, 1); /* Name */ getstringfield(L, index, "name", f.name); /* Groups */ lua_getfield(L, index, "groups"); read_groups(L, -1, f.groups); lua_pop(L, 1); /* Visual definition */ f.drawtype = (NodeDrawType)getenumfield(L, index, "drawtype", ScriptApiNode::es_DrawType,NDT_NORMAL); getfloatfield(L, index, "visual_scale", f.visual_scale); /* Meshnode model filename */ getstringfield(L, index, "mesh", f.mesh); // tiles = {} lua_getfield(L, index, "tiles"); // If nil, try the deprecated name "tile_images" instead if(lua_isnil(L, -1)){ lua_pop(L, 1); warn_if_field_exists(L, index, "tile_images", "Deprecated; new name is \"tiles\"."); lua_getfield(L, index, "tile_images"); } if(lua_istable(L, -1)){ int table = lua_gettop(L); lua_pushnil(L); int i = 0; while(lua_next(L, table) != 0){ // Read tiledef from value f.tiledef[i] = read_tiledef(L, -1, f.drawtype); // removes value, keeps key for next iteration lua_pop(L, 1); i++; if(i==6){ lua_pop(L, 1); break; } } // Copy last value to all remaining textures if(i >= 1){ TileDef lasttile = f.tiledef[i-1]; while(i < 6){ f.tiledef[i] = lasttile; i++; } } } lua_pop(L, 1); // overlay_tiles = {} lua_getfield(L, index, "overlay_tiles"); if (lua_istable(L, -1)) { int table = lua_gettop(L); lua_pushnil(L); int i = 0; while (lua_next(L, table) != 0) { // Read tiledef from value f.tiledef_overlay[i] = read_tiledef(L, -1, f.drawtype); // removes value, keeps key for next iteration lua_pop(L, 1); i++; if (i == 6) { lua_pop(L, 1); break; } } // Copy last value to all remaining textures if (i >= 1) { TileDef lasttile = f.tiledef_overlay[i - 1]; while (i < 6) { f.tiledef_overlay[i] = lasttile; i++; } } } lua_pop(L, 1); // special_tiles = {} lua_getfield(L, index, "special_tiles"); // If nil, try the deprecated name "special_materials" instead if(lua_isnil(L, -1)){ lua_pop(L, 1); warn_if_field_exists(L, index, "special_materials", "Deprecated; new name is \"special_tiles\"."); lua_getfield(L, index, "special_materials"); } if(lua_istable(L, -1)){ int table = lua_gettop(L); lua_pushnil(L); int i = 0; while(lua_next(L, table) != 0){ // Read tiledef from value f.tiledef_special[i] = read_tiledef(L, -1, f.drawtype); // removes value, keeps key for next iteration lua_pop(L, 1); i++; if(i==CF_SPECIAL_COUNT){ lua_pop(L, 1); break; } } } lua_pop(L, 1); f.alpha = getintfield_default(L, index, "alpha", 255); bool usealpha = getboolfield_default(L, index, "use_texture_alpha", false); if (usealpha) f.alpha = 0; // Read node color. lua_getfield(L, index, "color"); read_color(L, -1, &f.color); lua_pop(L, 1); getstringfield(L, index, "palette", f.palette_name); /* Other stuff */ lua_getfield(L, index, "post_effect_color"); read_color(L, -1, &f.post_effect_color); lua_pop(L, 1); f.param_type = (ContentParamType)getenumfield(L, index, "paramtype", ScriptApiNode::es_ContentParamType, CPT_NONE); f.param_type_2 = (ContentParamType2)getenumfield(L, index, "paramtype2", ScriptApiNode::es_ContentParamType2, CPT2_NONE); if (!f.palette_name.empty() && !(f.param_type_2 == CPT2_COLOR || f.param_type_2 == CPT2_COLORED_FACEDIR || f.param_type_2 == CPT2_COLORED_WALLMOUNTED)) warningstream << "Node " << f.name.c_str() << " has a palette, but not a suitable paramtype2." << std::endl; // Warn about some obsolete fields warn_if_field_exists(L, index, "wall_mounted", "Obsolete; use paramtype2 = 'wallmounted'"); warn_if_field_exists(L, index, "light_propagates", "Obsolete; determined from paramtype"); warn_if_field_exists(L, index, "dug_item", "Obsolete; use 'drop' field"); warn_if_field_exists(L, index, "extra_dug_item", "Obsolete; use 'drop' field"); warn_if_field_exists(L, index, "extra_dug_item_rarity", "Obsolete; use 'drop' field"); warn_if_field_exists(L, index, "metadata_name", "Obsolete; use on_add and metadata callbacks"); // True for all ground-like things like stone and mud, false for eg. trees getboolfield(L, index, "is_ground_content", f.is_ground_content); f.light_propagates = (f.param_type == CPT_LIGHT); getboolfield(L, index, "sunlight_propagates", f.sunlight_propagates); // This is used for collision detection. // Also for general solidness queries. getboolfield(L, index, "walkable", f.walkable); // Player can point to these getboolfield(L, index, "pointable", f.pointable); // Player can dig these getboolfield(L, index, "diggable", f.diggable); // Player can climb these getboolfield(L, index, "climbable", f.climbable); // Player can build on these getboolfield(L, index, "buildable_to", f.buildable_to); // Liquids flow into and replace node getboolfield(L, index, "floodable", f.floodable); // Whether the node is non-liquid, source liquid or flowing liquid f.liquid_type = (LiquidType)getenumfield(L, index, "liquidtype", ScriptApiNode::es_LiquidType, LIQUID_NONE); // If the content is liquid, this is the flowing version of the liquid. getstringfield(L, index, "liquid_alternative_flowing", f.liquid_alternative_flowing); // If the content is liquid, this is the source version of the liquid. getstringfield(L, index, "liquid_alternative_source", f.liquid_alternative_source); // Viscosity for fluid flow, ranging from 1 to 7, with // 1 giving almost instantaneous propagation and 7 being // the slowest possible f.liquid_viscosity = getintfield_default(L, index, "liquid_viscosity", f.liquid_viscosity); f.liquid_range = getintfield_default(L, index, "liquid_range", f.liquid_range); f.leveled = getintfield_default(L, index, "leveled", f.leveled); f.leveled_max = getintfield_default(L, index, "leveled_max", f.leveled_max); getboolfield(L, index, "liquid_renewable", f.liquid_renewable); f.drowning = getintfield_default(L, index, "drowning", f.drowning); // Amount of light the node emits f.light_source = getintfield_default(L, index, "light_source", f.light_source); if (f.light_source > LIGHT_MAX) { warningstream << "Node " << f.name.c_str() << " had greater light_source than " << LIGHT_MAX << ", it was reduced." << std::endl; f.light_source = LIGHT_MAX; } f.damage_per_second = getintfield_default(L, index, "damage_per_second", f.damage_per_second); lua_getfield(L, index, "node_box"); if(lua_istable(L, -1)) f.node_box = read_nodebox(L, -1); lua_pop(L, 1); lua_getfield(L, index, "connects_to"); if (lua_istable(L, -1)) { int table = lua_gettop(L); lua_pushnil(L); while (lua_next(L, table) != 0) { // Value at -1 f.connects_to.emplace_back(lua_tostring(L, -1)); lua_pop(L, 1); } } lua_pop(L, 1); lua_getfield(L, index, "connect_sides"); if (lua_istable(L, -1)) { int table = lua_gettop(L); lua_pushnil(L); while (lua_next(L, table) != 0) { // Value at -1 std::string side(lua_tostring(L, -1)); // Note faces are flipped to make checking easier if (side == "top") f.connect_sides |= 2; else if (side == "bottom") f.connect_sides |= 1; else if (side == "front") f.connect_sides |= 16; else if (side == "left") f.connect_sides |= 32; else if (side == "back") f.connect_sides |= 4; else if (side == "right") f.connect_sides |= 8; else warningstream << "Unknown value for \"connect_sides\": " << side << std::endl; lua_pop(L, 1); } } lua_pop(L, 1); lua_getfield(L, index, "selection_box"); if(lua_istable(L, -1)) f.selection_box = read_nodebox(L, -1); lua_pop(L, 1); lua_getfield(L, index, "collision_box"); if(lua_istable(L, -1)) f.collision_box = read_nodebox(L, -1); lua_pop(L, 1); f.waving = getintfield_default(L, index, "waving", f.waving); // Set to true if paramtype used to be 'facedir_simple' getboolfield(L, index, "legacy_facedir_simple", f.legacy_facedir_simple); // Set to true if wall_mounted used to be set to true getboolfield(L, index, "legacy_wallmounted", f.legacy_wallmounted); // Sound table lua_getfield(L, index, "sounds"); if(lua_istable(L, -1)){ lua_getfield(L, -1, "footstep"); read_soundspec(L, -1, f.sound_footstep); lua_pop(L, 1); lua_getfield(L, -1, "dig"); read_soundspec(L, -1, f.sound_dig); lua_pop(L, 1); lua_getfield(L, -1, "dug"); read_soundspec(L, -1, f.sound_dug); lua_pop(L, 1); } lua_pop(L, 1); // Node immediately placed by client when node is dug getstringfield(L, index, "node_dig_prediction", f.node_dig_prediction); return f; } void push_content_features(lua_State *L, const ContentFeatures &c) { std::string paramtype(ScriptApiNode::es_ContentParamType[(int)c.param_type].str); std::string paramtype2(ScriptApiNode::es_ContentParamType2[(int)c.param_type_2].str); std::string drawtype(ScriptApiNode::es_DrawType[(int)c.drawtype].str); std::string liquid_type(ScriptApiNode::es_LiquidType[(int)c.liquid_type].str); /* Missing "tiles" because I don't see a usecase (at least not yet). */ lua_newtable(L); lua_pushboolean(L, c.has_on_construct); lua_setfield(L, -2, "has_on_construct"); lua_pushboolean(L, c.has_on_destruct); lua_setfield(L, -2, "has_on_destruct"); lua_pushboolean(L, c.has_after_destruct); lua_setfield(L, -2, "has_after_destruct"); lua_pushstring(L, c.name.c_str()); lua_setfield(L, -2, "name"); push_groups(L, c.groups); lua_setfield(L, -2, "groups"); lua_pushstring(L, paramtype.c_str()); lua_setfield(L, -2, "paramtype"); lua_pushstring(L, paramtype2.c_str()); lua_setfield(L, -2, "paramtype2"); lua_pushstring(L, drawtype.c_str()); lua_setfield(L, -2, "drawtype"); if (!c.mesh.empty()) { lua_pushstring(L, c.mesh.c_str()); lua_setfield(L, -2, "mesh"); } #ifndef SERVER push_ARGB8(L, c.minimap_color); // I know this is not set-able w/ register_node, lua_setfield(L, -2, "minimap_color"); // but the people need to know! #endif lua_pushnumber(L, c.visual_scale); lua_setfield(L, -2, "visual_scale"); lua_pushnumber(L, c.alpha); lua_setfield(L, -2, "alpha"); if (!c.palette_name.empty()) { push_ARGB8(L, c.color); lua_setfield(L, -2, "color"); lua_pushstring(L, c.palette_name.c_str()); lua_setfield(L, -2, "palette_name"); push_palette(L, c.palette); lua_setfield(L, -2, "palette"); } lua_pushnumber(L, c.waving); lua_setfield(L, -2, "waving"); lua_pushnumber(L, c.connect_sides); lua_setfield(L, -2, "connect_sides"); lua_createtable(L, c.connects_to.size(), 0); u16 i = 1; for (const std::string &it : c.connects_to) { lua_pushlstring(L, it.c_str(), it.size()); lua_rawseti(L, -2, i++); } lua_setfield(L, -2, "connects_to"); push_ARGB8(L, c.post_effect_color); lua_setfield(L, -2, "post_effect_color"); lua_pushnumber(L, c.leveled); lua_setfield(L, -2, "leveled"); lua_pushnumber(L, c.leveled_max); lua_setfield(L, -2, "leveled_max"); lua_pushboolean(L, c.sunlight_propagates); lua_setfield(L, -2, "sunlight_propagates"); lua_pushnumber(L, c.light_source); lua_setfield(L, -2, "light_source"); lua_pushboolean(L, c.is_ground_content); lua_setfield(L, -2, "is_ground_content"); lua_pushboolean(L, c.walkable); lua_setfield(L, -2, "walkable"); lua_pushboolean(L, c.pointable); lua_setfield(L, -2, "pointable"); lua_pushboolean(L, c.diggable); lua_setfield(L, -2, "diggable"); lua_pushboolean(L, c.climbable); lua_setfield(L, -2, "climbable"); lua_pushboolean(L, c.buildable_to); lua_setfield(L, -2, "buildable_to"); lua_pushboolean(L, c.rightclickable); lua_setfield(L, -2, "rightclickable"); lua_pushnumber(L, c.damage_per_second); lua_setfield(L, -2, "damage_per_second"); if (c.isLiquid()) { lua_pushstring(L, liquid_type.c_str()); lua_setfield(L, -2, "liquid_type"); lua_pushstring(L, c.liquid_alternative_flowing.c_str()); lua_setfield(L, -2, "liquid_alternative_flowing"); lua_pushstring(L, c.liquid_alternative_source.c_str()); lua_setfield(L, -2, "liquid_alternative_source"); lua_pushnumber(L, c.liquid_viscosity); lua_setfield(L, -2, "liquid_viscosity"); lua_pushboolean(L, c.liquid_renewable); lua_setfield(L, -2, "liquid_renewable"); lua_pushnumber(L, c.liquid_range); lua_setfield(L, -2, "liquid_range"); } lua_pushnumber(L, c.drowning); lua_setfield(L, -2, "drowning"); lua_pushboolean(L, c.floodable); lua_setfield(L, -2, "floodable"); push_nodebox(L, c.node_box); lua_setfield(L, -2, "node_box"); push_nodebox(L, c.selection_box); lua_setfield(L, -2, "selection_box"); push_nodebox(L, c.collision_box); lua_setfield(L, -2, "collision_box"); lua_newtable(L); push_soundspec(L, c.sound_footstep); lua_setfield(L, -2, "sound_footstep"); push_soundspec(L, c.sound_dig); lua_setfield(L, -2, "sound_dig"); push_soundspec(L, c.sound_dug); lua_setfield(L, -2, "sound_dug"); lua_setfield(L, -2, "sounds"); lua_pushboolean(L, c.legacy_facedir_simple); lua_setfield(L, -2, "legacy_facedir_simple"); lua_pushboolean(L, c.legacy_wallmounted); lua_setfield(L, -2, "legacy_wallmounted"); lua_pushstring(L, c.node_dig_prediction.c_str()); lua_setfield(L, -2, "node_dig_prediction"); } /******************************************************************************/ void push_nodebox(lua_State *L, const NodeBox &box) { lua_newtable(L); switch (box.type) { case NODEBOX_REGULAR: lua_pushstring(L, "regular"); lua_setfield(L, -2, "type"); break; case NODEBOX_LEVELED: case NODEBOX_FIXED: lua_pushstring(L, "fixed"); lua_setfield(L, -2, "type"); push_box(L, box.fixed); lua_setfield(L, -2, "fixed"); break; case NODEBOX_WALLMOUNTED: lua_pushstring(L, "wallmounted"); lua_setfield(L, -2, "type"); push_aabb3f(L, box.wall_top); lua_setfield(L, -2, "wall_top"); push_aabb3f(L, box.wall_bottom); lua_setfield(L, -2, "wall_bottom"); push_aabb3f(L, box.wall_side); lua_setfield(L, -2, "wall_side"); break; case NODEBOX_CONNECTED: lua_pushstring(L, "connected"); lua_setfield(L, -2, "type"); push_box(L, box.connect_top); lua_setfield(L, -2, "connect_top"); push_box(L, box.connect_bottom); lua_setfield(L, -2, "connect_bottom"); push_box(L, box.connect_front); lua_setfield(L, -2, "connect_front"); push_box(L, box.connect_back); lua_setfield(L, -2, "connect_back"); push_box(L, box.connect_left); lua_setfield(L, -2, "connect_left"); push_box(L, box.connect_right); lua_setfield(L, -2, "connect_right"); break; default: FATAL_ERROR("Invalid box.type"); break; } } void push_box(lua_State *L, const std::vector &box) { lua_createtable(L, box.size(), 0); u8 i = 1; for (const aabb3f &it : box) { push_aabb3f(L, it); lua_rawseti(L, -2, i++); } } /******************************************************************************/ void push_palette(lua_State *L, const std::vector *palette) { lua_createtable(L, palette->size(), 0); int newTable = lua_gettop(L); int index = 1; std::vector::const_iterator iter; for (iter = palette->begin(); iter != palette->end(); ++iter) { push_ARGB8(L, (*iter)); lua_rawseti(L, newTable, index); index++; } } /******************************************************************************/ void read_server_sound_params(lua_State *L, int index, ServerSoundParams ¶ms) { if(index < 0) index = lua_gettop(L) + 1 + index; // Clear params = ServerSoundParams(); if(lua_istable(L, index)){ getfloatfield(L, index, "gain", params.gain); getstringfield(L, index, "to_player", params.to_player); getfloatfield(L, index, "fade", params.fade); getfloatfield(L, index, "pitch", params.pitch); lua_getfield(L, index, "pos"); if(!lua_isnil(L, -1)){ v3f p = read_v3f(L, -1)*BS; params.pos = p; params.type = ServerSoundParams::SSP_POSITIONAL; } lua_pop(L, 1); lua_getfield(L, index, "object"); if(!lua_isnil(L, -1)){ ObjectRef *ref = ObjectRef::checkobject(L, -1); ServerActiveObject *sao = ObjectRef::getobject(ref); if(sao){ params.object = sao->getId(); params.type = ServerSoundParams::SSP_OBJECT; } } lua_pop(L, 1); params.max_hear_distance = BS*getfloatfield_default(L, index, "max_hear_distance", params.max_hear_distance/BS); getboolfield(L, index, "loop", params.loop); getstringfield(L, index, "exclude_player", params.exclude_player); } } /******************************************************************************/ void read_soundspec(lua_State *L, int index, SimpleSoundSpec &spec) { if(index < 0) index = lua_gettop(L) + 1 + index; if (lua_isnil(L, index)) return; if (lua_istable(L, index)) { getstringfield(L, index, "name", spec.name); getfloatfield(L, index, "gain", spec.gain); getfloatfield(L, index, "fade", spec.fade); getfloatfield(L, index, "pitch", spec.pitch); } else if (lua_isstring(L, index)) { spec.name = lua_tostring(L, index); } } void push_soundspec(lua_State *L, const SimpleSoundSpec &spec) { lua_createtable(L, 0, 3); lua_pushstring(L, spec.name.c_str()); lua_setfield(L, -2, "name"); lua_pushnumber(L, spec.gain); lua_setfield(L, -2, "gain"); lua_pushnumber(L, spec.fade); lua_setfield(L, -2, "fade"); lua_pushnumber(L, spec.pitch); lua_setfield(L, -2, "pitch"); } /******************************************************************************/ NodeBox read_nodebox(lua_State *L, int index) { NodeBox nodebox; if (lua_isnil(L, -1)) return nodebox; luaL_checktype(L, -1, LUA_TTABLE); nodebox.type = (NodeBoxType)getenumfield(L, index, "type", ScriptApiNode::es_NodeBoxType, NODEBOX_REGULAR); #define NODEBOXREAD(n, s){ \ lua_getfield(L, index, (s)); \ if (lua_istable(L, -1)) \ (n) = read_aabb3f(L, -1, BS); \ lua_pop(L, 1); \ } #define NODEBOXREADVEC(n, s) \ lua_getfield(L, index, (s)); \ if (lua_istable(L, -1)) \ (n) = read_aabb3f_vector(L, -1, BS); \ lua_pop(L, 1); NODEBOXREADVEC(nodebox.fixed, "fixed"); NODEBOXREAD(nodebox.wall_top, "wall_top"); NODEBOXREAD(nodebox.wall_bottom, "wall_bottom"); NODEBOXREAD(nodebox.wall_side, "wall_side"); NODEBOXREADVEC(nodebox.connect_top, "connect_top"); NODEBOXREADVEC(nodebox.connect_bottom, "connect_bottom"); NODEBOXREADVEC(nodebox.connect_front, "connect_front"); NODEBOXREADVEC(nodebox.connect_left, "connect_left"); NODEBOXREADVEC(nodebox.connect_back, "connect_back"); NODEBOXREADVEC(nodebox.connect_right, "connect_right"); NODEBOXREADVEC(nodebox.disconnected_top, "disconnected_top"); NODEBOXREADVEC(nodebox.disconnected_bottom, "disconnected_bottom"); NODEBOXREADVEC(nodebox.disconnected_front, "disconnected_front"); NODEBOXREADVEC(nodebox.disconnected_left, "disconnected_left"); NODEBOXREADVEC(nodebox.disconnected_back, "disconnected_back"); NODEBOXREADVEC(nodebox.disconnected_right, "disconnected_right"); NODEBOXREADVEC(nodebox.disconnected, "disconnected"); NODEBOXREADVEC(nodebox.disconnected_sides, "disconnected_sides"); return nodebox; } /******************************************************************************/ MapNode readnode(lua_State *L, int index, const NodeDefManager *ndef) { lua_getfield(L, index, "name"); if (!lua_isstring(L, -1)) throw LuaError("Node name is not set or is not a string!"); std::string name = lua_tostring(L, -1); lua_pop(L, 1); u8 param1 = 0; lua_getfield(L, index, "param1"); if (!lua_isnil(L, -1)) param1 = lua_tonumber(L, -1); lua_pop(L, 1); u8 param2 = 0; lua_getfield(L, index, "param2"); if (!lua_isnil(L, -1)) param2 = lua_tonumber(L, -1); lua_pop(L, 1); content_t id = CONTENT_IGNORE; if (!ndef->getId(name, id)) throw LuaError("\"" + name + "\" is not a registered node!"); return {id, param1, param2}; } /******************************************************************************/ void pushnode(lua_State *L, const MapNode &n, const NodeDefManager *ndef) { lua_createtable(L, 0, 3); lua_pushstring(L, ndef->get(n).name.c_str()); lua_setfield(L, -2, "name"); lua_pushinteger(L, n.getParam1()); lua_setfield(L, -2, "param1"); lua_pushinteger(L, n.getParam2()); lua_setfield(L, -2, "param2"); } /******************************************************************************/ void warn_if_field_exists(lua_State *L, int table, const char *name, const std::string &message) { lua_getfield(L, table, name); if (!lua_isnil(L, -1)) { warningstream << "Field \"" << name << "\": " << message << std::endl; infostream << script_get_backtrace(L) << std::endl; } lua_pop(L, 1); } /******************************************************************************/ int getenumfield(lua_State *L, int table, const char *fieldname, const EnumString *spec, int default_) { int result = default_; string_to_enum(spec, result, getstringfield_default(L, table, fieldname, "")); return result; } /******************************************************************************/ bool string_to_enum(const EnumString *spec, int &result, const std::string &str) { const EnumString *esp = spec; while(esp->str){ if (!strcmp(str.c_str(), esp->str)) { result = esp->num; return true; } esp++; } return false; } /******************************************************************************/ ItemStack read_item(lua_State* L, int index, IItemDefManager *idef) { if(index < 0) index = lua_gettop(L) + 1 + index; if (lua_isnil(L, index)) { return ItemStack(); } if (lua_isuserdata(L, index)) { // Convert from LuaItemStack LuaItemStack *o = LuaItemStack::checkobject(L, index); return o->getItem(); } if (lua_isstring(L, index)) { // Convert from itemstring std::string itemstring = lua_tostring(L, index); try { ItemStack item; item.deSerialize(itemstring, idef); return item; } catch(SerializationError &e) { warningstream<<"unable to create item from itemstring" <<": "<getList(name); if(invlist == NULL){ lua_pushnil(L); return; } std::vector items; for(u32 i=0; igetSize(); i++) items.push_back(invlist->getItem(i)); push_items(L, items); } /******************************************************************************/ void read_inventory_list(lua_State *L, int tableindex, Inventory *inv, const char *name, Server* srv, int forcesize) { if(tableindex < 0) tableindex = lua_gettop(L) + 1 + tableindex; // If nil, delete list if(lua_isnil(L, tableindex)){ inv->deleteList(name); return; } // Otherwise set list std::vector items = read_items(L, tableindex,srv); int listsize = (forcesize != -1) ? forcesize : items.size(); InventoryList *invlist = inv->addList(name, listsize); int index = 0; for(std::vector::const_iterator i = items.begin(); i != items.end(); ++i){ if(forcesize != -1 && index == forcesize) break; invlist->changeItem(index, *i); index++; } while(forcesize != -1 && index < forcesize){ invlist->deleteItem(index); index++; } } /******************************************************************************/ struct TileAnimationParams read_animation_definition(lua_State *L, int index) { if(index < 0) index = lua_gettop(L) + 1 + index; struct TileAnimationParams anim; anim.type = TAT_NONE; if (!lua_istable(L, index)) return anim; anim.type = (TileAnimationType) getenumfield(L, index, "type", es_TileAnimationType, TAT_NONE); if (anim.type == TAT_VERTICAL_FRAMES) { // {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0} anim.vertical_frames.aspect_w = getintfield_default(L, index, "aspect_w", 16); anim.vertical_frames.aspect_h = getintfield_default(L, index, "aspect_h", 16); anim.vertical_frames.length = getfloatfield_default(L, index, "length", 1.0); } else if (anim.type == TAT_SHEET_2D) { // {type="sheet_2d", frames_w=5, frames_h=3, frame_length=0.5} getintfield(L, index, "frames_w", anim.sheet_2d.frames_w); getintfield(L, index, "frames_h", anim.sheet_2d.frames_h); getfloatfield(L, index, "frame_length", anim.sheet_2d.frame_length); } return anim; } /******************************************************************************/ ToolCapabilities read_tool_capabilities( lua_State *L, int table) { ToolCapabilities toolcap; getfloatfield(L, table, "full_punch_interval", toolcap.full_punch_interval); getintfield(L, table, "max_drop_level", toolcap.max_drop_level); getintfield(L, table, "punch_attack_uses", toolcap.punch_attack_uses); lua_getfield(L, table, "groupcaps"); if(lua_istable(L, -1)){ int table_groupcaps = lua_gettop(L); lua_pushnil(L); while(lua_next(L, table_groupcaps) != 0){ // key at index -2 and value at index -1 std::string groupname = luaL_checkstring(L, -2); if(lua_istable(L, -1)){ int table_groupcap = lua_gettop(L); // This will be created ToolGroupCap groupcap; // Read simple parameters getintfield(L, table_groupcap, "maxlevel", groupcap.maxlevel); getintfield(L, table_groupcap, "uses", groupcap.uses); // DEPRECATED: maxwear float maxwear = 0; if (getfloatfield(L, table_groupcap, "maxwear", maxwear)){ if (maxwear != 0) groupcap.uses = 1.0/maxwear; else groupcap.uses = 0; warningstream << "Field \"maxwear\" is deprecated; " << "replace with uses=1/maxwear" << std::endl; infostream << script_get_backtrace(L) << std::endl; } // Read "times" table lua_getfield(L, table_groupcap, "times"); if(lua_istable(L, -1)){ int table_times = lua_gettop(L); lua_pushnil(L); while(lua_next(L, table_times) != 0){ // key at index -2 and value at index -1 int rating = luaL_checkinteger(L, -2); float time = luaL_checknumber(L, -1); groupcap.times[rating] = time; // removes value, keeps key for next iteration lua_pop(L, 1); } } lua_pop(L, 1); // Insert groupcap into toolcap toolcap.groupcaps[groupname] = groupcap; } // removes value, keeps key for next iteration lua_pop(L, 1); } } lua_pop(L, 1); lua_getfield(L, table, "damage_groups"); if(lua_istable(L, -1)){ int table_damage_groups = lua_gettop(L); lua_pushnil(L); while(lua_next(L, table_damage_groups) != 0){ // key at index -2 and value at index -1 std::string groupname = luaL_checkstring(L, -2); u16 value = luaL_checkinteger(L, -1); toolcap.damageGroups[groupname] = value; // removes value, keeps key for next iteration lua_pop(L, 1); } } lua_pop(L, 1); return toolcap; } /******************************************************************************/ void push_dig_params(lua_State *L,const DigParams ¶ms) { lua_createtable(L, 0, 3); setboolfield(L, -1, "diggable", params.diggable); setfloatfield(L, -1, "time", params.time); setintfield(L, -1, "wear", params.wear); } /******************************************************************************/ void push_hit_params(lua_State *L,const HitParams ¶ms) { lua_createtable(L, 0, 3); setintfield(L, -1, "hp", params.hp); setintfield(L, -1, "wear", params.wear); } /******************************************************************************/ bool getflagsfield(lua_State *L, int table, const char *fieldname, FlagDesc *flagdesc, u32 *flags, u32 *flagmask) { lua_getfield(L, table, fieldname); bool success = read_flags(L, -1, flagdesc, flags, flagmask); lua_pop(L, 1); return success; } bool read_flags(lua_State *L, int index, FlagDesc *flagdesc, u32 *flags, u32 *flagmask) { if (lua_isstring(L, index)) { std::string flagstr = lua_tostring(L, index); *flags = readFlagString(flagstr, flagdesc, flagmask); } else if (lua_istable(L, index)) { *flags = read_flags_table(L, index, flagdesc, flagmask); } else { return false; } return true; } u32 read_flags_table(lua_State *L, int table, FlagDesc *flagdesc, u32 *flagmask) { u32 flags = 0, mask = 0; char fnamebuf[64] = "no"; for (int i = 0; flagdesc[i].name; i++) { bool result; if (getboolfield(L, table, flagdesc[i].name, result)) { mask |= flagdesc[i].flag; if (result) flags |= flagdesc[i].flag; } strlcpy(fnamebuf + 2, flagdesc[i].name, sizeof(fnamebuf) - 2); if (getboolfield(L, table, fnamebuf, result)) mask |= flagdesc[i].flag; } if (flagmask) *flagmask = mask; return flags; } void push_flags_string(lua_State *L, FlagDesc *flagdesc, u32 flags, u32 flagmask) { std::string flagstring = writeFlagString(flags, flagdesc, flagmask); lua_pushlstring(L, flagstring.c_str(), flagstring.size()); } /******************************************************************************/ /* Lua Stored data! */ /******************************************************************************/ /******************************************************************************/ void read_groups(lua_State *L, int index, ItemGroupList &result) { if (lua_isnil(L, index)) return; luaL_checktype(L, index, LUA_TTABLE); result.clear(); lua_pushnil(L); if (index < 0) index -= 1; while (lua_next(L, index) != 0) { // key at index -2 and value at index -1 std::string name = luaL_checkstring(L, -2); int rating = luaL_checkinteger(L, -1); // zero rating indicates not in the group if (rating != 0) result[name] = rating; // removes value, keeps key for next iteration lua_pop(L, 1); } } /******************************************************************************/ void push_groups(lua_State *L, const ItemGroupList &groups) { lua_createtable(L, 0, groups.size()); for (const auto &group : groups) { lua_pushinteger(L, group.second); lua_setfield(L, -2, group.first.c_str()); } } /******************************************************************************/ void push_items(lua_State *L, const std::vector &items) { lua_createtable(L, items.size(), 0); for (u32 i = 0; i != items.size(); i++) { LuaItemStack::create(L, items[i]); lua_rawseti(L, -2, i + 1); } } /******************************************************************************/ std::vector read_items(lua_State *L, int index, Server *srv) { if(index < 0) index = lua_gettop(L) + 1 + index; std::vector items; luaL_checktype(L, index, LUA_TTABLE); lua_pushnil(L); while (lua_next(L, index)) { s32 key = luaL_checkinteger(L, -2); if (key < 1) { throw LuaError("Invalid inventory list index"); } if (items.size() < (u32) key) { items.resize(key); } items[key - 1] = read_item(L, -1, srv->idef()); lua_pop(L, 1); } return items; } /******************************************************************************/ void luaentity_get(lua_State *L, u16 id) { // Get luaentities[i] lua_getglobal(L, "core"); lua_getfield(L, -1, "luaentities"); luaL_checktype(L, -1, LUA_TTABLE); lua_pushinteger(L, id); lua_gettable(L, -2); lua_remove(L, -2); // Remove luaentities lua_remove(L, -2); // Remove core } /******************************************************************************/ bool read_noiseparams(lua_State *L, int index, NoiseParams *np) { if (index < 0) index = lua_gettop(L) + 1 + index; if (!lua_istable(L, index)) return false; getfloatfield(L, index, "offset", np->offset); getfloatfield(L, index, "scale", np->scale); getfloatfield(L, index, "persist", np->persist); getfloatfield(L, index, "persistence", np->persist); getfloatfield(L, index, "lacunarity", np->lacunarity); getintfield(L, index, "seed", np->seed); getintfield(L, index, "octaves", np->octaves); u32 flags = 0; u32 flagmask = 0; np->flags = getflagsfield(L, index, "flags", flagdesc_noiseparams, &flags, &flagmask) ? flags : NOISE_FLAG_DEFAULTS; lua_getfield(L, index, "spread"); np->spread = read_v3f(L, -1); lua_pop(L, 1); return true; } void push_noiseparams(lua_State *L, NoiseParams *np) { lua_newtable(L); push_float_string(L, np->offset); lua_setfield(L, -2, "offset"); push_float_string(L, np->scale); lua_setfield(L, -2, "scale"); push_float_string(L, np->persist); lua_setfield(L, -2, "persistence"); push_float_string(L, np->lacunarity); lua_setfield(L, -2, "lacunarity"); lua_pushnumber(L, np->seed); lua_setfield(L, -2, "seed"); lua_pushnumber(L, np->octaves); lua_setfield(L, -2, "octaves"); push_flags_string(L, flagdesc_noiseparams, np->flags, np->flags); lua_setfield(L, -2, "flags"); push_v3_float_string(L, np->spread); lua_setfield(L, -2, "spread"); } /******************************************************************************/ // Returns depth of json value tree static int push_json_value_getdepth(const Json::Value &value) { if (!value.isArray() && !value.isObject()) return 1; int maxdepth = 0; for (const auto &it : value) { int elemdepth = push_json_value_getdepth(it); if (elemdepth > maxdepth) maxdepth = elemdepth; } return maxdepth + 1; } // Recursive function to convert JSON --> Lua table static bool push_json_value_helper(lua_State *L, const Json::Value &value, int nullindex) { switch(value.type()) { case Json::nullValue: default: lua_pushvalue(L, nullindex); break; case Json::intValue: lua_pushinteger(L, value.asLargestInt()); break; case Json::uintValue: lua_pushinteger(L, value.asLargestUInt()); break; case Json::realValue: lua_pushnumber(L, value.asDouble()); break; case Json::stringValue: { const char *str = value.asCString(); lua_pushstring(L, str ? str : ""); } break; case Json::booleanValue: lua_pushboolean(L, value.asInt()); break; case Json::arrayValue: lua_createtable(L, value.size(), 0); for (Json::Value::const_iterator it = value.begin(); it != value.end(); ++it) { push_json_value_helper(L, *it, nullindex); lua_rawseti(L, -2, it.index() + 1); } break; case Json::objectValue: lua_createtable(L, 0, value.size()); for (Json::Value::const_iterator it = value.begin(); it != value.end(); ++it) { #if !defined(JSONCPP_STRING) && (JSONCPP_VERSION_MAJOR < 1 || JSONCPP_VERSION_MINOR < 9) const char *str = it.memberName(); lua_pushstring(L, str ? str : ""); #else std::string str = it.name(); lua_pushstring(L, str.c_str()); #endif push_json_value_helper(L, *it, nullindex); lua_rawset(L, -3); } break; } return true; } // converts JSON --> Lua table; returns false if lua stack limit exceeded // nullindex: Lua stack index of value to use in place of JSON null bool push_json_value(lua_State *L, const Json::Value &value, int nullindex) { if(nullindex < 0) nullindex = lua_gettop(L) + 1 + nullindex; int depth = push_json_value_getdepth(value); // The maximum number of Lua stack slots used at each recursion level // of push_json_value_helper is 2, so make sure there a depth * 2 slots if (lua_checkstack(L, depth * 2)) return push_json_value_helper(L, value, nullindex); return false; } // Converts Lua table --> JSON void read_json_value(lua_State *L, Json::Value &root, int index, u8 recursion) { if (recursion > 16) { throw SerializationError("Maximum recursion depth exceeded"); } int type = lua_type(L, index); if (type == LUA_TBOOLEAN) { root = (bool) lua_toboolean(L, index); } else if (type == LUA_TNUMBER) { root = lua_tonumber(L, index); } else if (type == LUA_TSTRING) { size_t len; const char *str = lua_tolstring(L, index, &len); root = std::string(str, len); } else if (type == LUA_TTABLE) { lua_pushnil(L); while (lua_next(L, index)) { // Key is at -2 and value is at -1 Json::Value value; read_json_value(L, value, lua_gettop(L), recursion + 1); Json::ValueType roottype = root.type(); int keytype = lua_type(L, -1); if (keytype == LUA_TNUMBER) { lua_Number key = lua_tonumber(L, -1); if (roottype != Json::nullValue && roottype != Json::arrayValue) { throw SerializationError("Can't mix array and object values in JSON"); } else if (key < 1) { throw SerializationError("Can't use zero-based or negative indexes in JSON"); } else if (floor(key) != key) { throw SerializationError("Can't use indexes with a fractional part in JSON"); } root[(Json::ArrayIndex) key - 1] = value; } else if (keytype == LUA_TSTRING) { if (roottype != Json::nullValue && roottype != Json::objectValue) { throw SerializationError("Can't mix array and object values in JSON"); } root[lua_tostring(L, -1)] = value; } else { throw SerializationError("Lua key to convert to JSON is not a string or number"); } } } else if (type == LUA_TNIL) { root = Json::nullValue; } else { throw SerializationError("Can only store booleans, numbers, strings, objects, arrays, and null in JSON"); } lua_pop(L, 1); // Pop value } void push_pointed_thing(lua_State *L, const PointedThing &pointed, bool csm, bool hitpoint) { lua_newtable(L); if (pointed.type == POINTEDTHING_NODE) { lua_pushstring(L, "node"); lua_setfield(L, -2, "type"); push_v3s16(L, pointed.node_undersurface); lua_setfield(L, -2, "under"); push_v3s16(L, pointed.node_abovesurface); lua_setfield(L, -2, "above"); } else if (pointed.type == POINTEDTHING_OBJECT) { lua_pushstring(L, "object"); lua_setfield(L, -2, "type"); if (csm) { lua_pushinteger(L, pointed.object_id); lua_setfield(L, -2, "id"); } else { push_objectRef(L, pointed.object_id); lua_setfield(L, -2, "ref"); } } else { lua_pushstring(L, "nothing"); lua_setfield(L, -2, "type"); } if (hitpoint && (pointed.type != POINTEDTHING_NOTHING)) { push_v3f(L, pointed.intersection_point / BS); // convert to node coords lua_setfield(L, -2, "intersection_point"); push_v3s16(L, pointed.intersection_normal); lua_setfield(L, -2, "intersection_normal"); lua_pushinteger(L, pointed.box_id + 1); // change to Lua array index lua_setfield(L, -2, "box_id"); } } void push_objectRef(lua_State *L, const u16 id) { // Get core.object_refs[i] lua_getglobal(L, "core"); lua_getfield(L, -1, "object_refs"); luaL_checktype(L, -1, LUA_TTABLE); lua_pushinteger(L, id); lua_gettable(L, -2); lua_remove(L, -2); // object_refs lua_remove(L, -2); // core } void read_hud_element(lua_State *L, HudElement *elem) { elem->type = (HudElementType)getenumfield(L, 2, "hud_elem_type", es_HudElementType, HUD_ELEM_TEXT); lua_getfield(L, 2, "position"); elem->pos = lua_istable(L, -1) ? read_v2f(L, -1) : v2f(); lua_pop(L, 1); lua_getfield(L, 2, "scale"); elem->scale = lua_istable(L, -1) ? read_v2f(L, -1) : v2f(); lua_pop(L, 1); lua_getfield(L, 2, "size"); elem->size = lua_istable(L, -1) ? read_v2s32(L, -1) : v2s32(); lua_pop(L, 1); elem->name = getstringfield_default(L, 2, "name", ""); elem->text = getstringfield_default(L, 2, "text", ""); elem->number = getintfield_default(L, 2, "number", 0); if (elem->type == HUD_ELEM_WAYPOINT) // waypoints reuse the item field to store precision, item = precision + 1 elem->item = getintfield_default(L, 2, "precision", -1) + 1; else elem->item = getintfield_default(L, 2, "item", 0); elem->dir = getintfield_default(L, 2, "direction", 0); elem->z_index = MYMAX(S16_MIN, MYMIN(S16_MAX, getintfield_default(L, 2, "z_index", 0))); elem->text2 = getstringfield_default(L, 2, "text2", ""); // Deprecated, only for compatibility's sake if (elem->dir == 0) elem->dir = getintfield_default(L, 2, "dir", 0); lua_getfield(L, 2, "alignment"); elem->align = lua_istable(L, -1) ? read_v2f(L, -1) : v2f(); lua_pop(L, 1); lua_getfield(L, 2, "offset"); elem->offset = lua_istable(L, -1) ? read_v2f(L, -1) : v2f(); lua_pop(L, 1); lua_getfield(L, 2, "world_pos"); elem->world_pos = lua_istable(L, -1) ? read_v3f(L, -1) : v3f(); lua_pop(L, 1); /* check for known deprecated element usage */ if ((elem->type == HUD_ELEM_STATBAR) && (elem->size == v2s32())) log_deprecated(L,"Deprecated usage of statbar without size!"); } void push_hud_element(lua_State *L, HudElement *elem) { lua_newtable(L); lua_pushstring(L, es_HudElementType[(u8)elem->type].str); lua_setfield(L, -2, "type"); push_v2f(L, elem->pos); lua_setfield(L, -2, "position"); lua_pushstring(L, elem->name.c_str()); lua_setfield(L, -2, "name"); push_v2f(L, elem->scale); lua_setfield(L, -2, "scale"); lua_pushstring(L, elem->text.c_str()); lua_setfield(L, -2, "text"); lua_pushnumber(L, elem->number); lua_setfield(L, -2, "number"); lua_pushnumber(L, elem->item); lua_setfield(L, -2, "item"); lua_pushnumber(L, elem->dir); lua_setfield(L, -2, "direction"); push_v2f(L, elem->offset); lua_setfield(L, -2, "offset"); push_v2f(L, elem->align); lua_setfield(L, -2, "alignment"); push_v2s32(L, elem->size); lua_setfield(L, -2, "size"); // Deprecated, only for compatibility's sake lua_pushnumber(L, elem->dir); lua_setfield(L, -2, "dir"); push_v3f(L, elem->world_pos); lua_setfield(L, -2, "world_pos"); lua_pushnumber(L, elem->z_index); lua_setfield(L, -2, "z_index"); lua_pushstring(L, elem->text2.c_str()); lua_setfield(L, -2, "text2"); } HudElementStat read_hud_change(lua_State *L, HudElement *elem, void **value) { HudElementStat stat = HUD_STAT_NUMBER; if (lua_isstring(L, 3)) { int statint; std::string statstr = lua_tostring(L, 3); stat = string_to_enum(es_HudElementStat, statint, statstr) ? (HudElementStat)statint : stat; } switch (stat) { case HUD_STAT_POS: elem->pos = read_v2f(L, 4); *value = &elem->pos; break; case HUD_STAT_NAME: elem->name = luaL_checkstring(L, 4); *value = &elem->name; break; case HUD_STAT_SCALE: elem->scale = read_v2f(L, 4); *value = &elem->scale; break; case HUD_STAT_TEXT: elem->text = luaL_checkstring(L, 4); *value = &elem->text; break; case HUD_STAT_NUMBER: elem->number = luaL_checknumber(L, 4); *value = &elem->number; break; case HUD_STAT_ITEM: elem->item = luaL_checknumber(L, 4); *value = &elem->item; break; case HUD_STAT_DIR: elem->dir = luaL_checknumber(L, 4); *value = &elem->dir; break; case HUD_STAT_ALIGN: elem->align = read_v2f(L, 4); *value = &elem->align; break; case HUD_STAT_OFFSET: elem->offset = read_v2f(L, 4); *value = &elem->offset; break; case HUD_STAT_WORLD_POS: elem->world_pos = read_v3f(L, 4); *value = &elem->world_pos; break; case HUD_STAT_SIZE: elem->size = read_v2s32(L, 4); *value = &elem->size; break; case HUD_STAT_Z_INDEX: elem->z_index = MYMAX(S16_MIN, MYMIN(S16_MAX, luaL_checknumber(L, 4))); *value = &elem->z_index; break; case HUD_STAT_TEXT2: elem->text2 = luaL_checkstring(L, 4); *value = &elem->text2; break; } return stat; } /******************************************************************************/ // Indices must match values in `enum CollisionType` exactly!! static const char *collision_type_str[] = { "node", "object", }; // Indices must match values in `enum CollisionAxis` exactly!! static const char *collision_axis_str[] = { "x", "y", "z", }; void push_collision_move_result(lua_State *L, const collisionMoveResult &res) { lua_createtable(L, 0, 4); setboolfield(L, -1, "touching_ground", res.touching_ground); setboolfield(L, -1, "collides", res.collides); setboolfield(L, -1, "standing_on_object", res.standing_on_object); /* collisions */ lua_createtable(L, res.collisions.size(), 0); int i = 1; for (const auto &c : res.collisions) { lua_createtable(L, 0, 5); lua_pushstring(L, collision_type_str[c.type]); lua_setfield(L, -2, "type"); assert(c.axis != COLLISION_AXIS_NONE); lua_pushstring(L, collision_axis_str[c.axis]); lua_setfield(L, -2, "axis"); if (c.type == COLLISION_NODE) { push_v3s16(L, c.node_p); lua_setfield(L, -2, "node_pos"); } else if (c.type == COLLISION_OBJECT) { push_objectRef(L, c.object->getId()); lua_setfield(L, -2, "object"); } push_v3f(L, c.old_speed / BS); lua_setfield(L, -2, "old_velocity"); push_v3f(L, c.new_speed / BS); lua_setfield(L, -2, "new_velocity"); lua_rawseti(L, -2, i++); } lua_setfield(L, -2, "collisions"); /**/ }