1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF /* 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. */ #include "cpp_api/s_item.h" #include "cpp_api/s_internal.h" #include "common/c_converter.h" #include "common/c_content.h" #include "lua_api/l_item.h" #include "lua_api/l_inventory.h" #include "server.h" #include "log.h" #include "util/pointedthing.h" #include "inventory.h" #include "inventorymanager.h" bool ScriptApiItem::item_OnDrop(ItemStack &item, ServerActiveObject *dropper, v3f pos) { SCRIPTAPI_PRECHECKHEADER int error_handler = PUSH_ERROR_HANDLER(L); // Push callback function on stack if (!getItemCallback(item.name.c_str(), "on_drop")) return false; // Call function LuaItemStack::create(L, item); objectrefGetOrCreate(L, dropper); pushFloatPos(L, pos); PCALL_RES(lua_pcall(L, 3, 1, error_handler)); if (!lua_isnil(L, -1)) { try { item = read_item(L,-1, getServer()); } catch (LuaError &e) { throw LuaError(std::string(e.what()) + ". item=" + item.name); } } lua_pop(L, 2); // Pop item and error handler return true; } bool ScriptApiItem::item_OnPlace(ItemStack &item, ServerActiveObject *placer, const PointedThing &pointed) { SCRIPTAPI_PRECHECKHEADER int error_handler = PUSH_ERROR_HANDLER(L); // Push callback function on stack if (!getItemCallback(item.name.c_str(), "on_place")) return false; // Call function LuaItemStack::create(L, item); objectrefGetOrCreate(L, placer); pushPointedThing(pointed); PCALL_RES(lua_pcall(L, 3, 1, error_handler)); if (!lua_isnil(L, -1)) { try { item = read_item(L,-1, getServer()); } catch (LuaError &e) { throw LuaError(std::string(e.what()) + ". item=" + item.name); } } lua_pop(L, 2); // Pop item and error handler return true; } bool ScriptApiItem::item_OnUse(ItemStack &item, ServerActiveObject *user, const PointedThing &pointed) { SCRIPTAPI_PRECHECKHEADER int error_handler = PUSH_ERROR_HANDLER(L); // Push callback function on stack if (!getItemCallback(item.name.c_str(), "on_use")) return false; // Call function LuaItemStack::create(L, item); objectrefGetOrCreate(L, user); pushPointedThing(pointed); PCALL_RES(lua_pcall(L, 3, 1, error_handler)); if(!lua_isnil(L, -1)) { try { item = read_item(L,-1, getServer()); } catch (LuaError &e) { throw LuaError(std::string(e.what()) + ". item=" + item.name); } } lua_pop(L, 2); // Pop item and error handler return true; } bool ScriptApiItem::item_OnSecondaryUse(ItemStack &item, ServerActiveObject *user) { SCRIPTAPI_PRECHECKHEADER int error_handler = PUSH_ERROR_HANDLER(L); if (!getItemCallback(item.name.c_str(), "on_secondary_use")) return false; LuaItemStack::create(L, item); objectrefGetOrCreate(L, user); PointedThing pointed; pointed.type = POINTEDTHING_NOTHING; pushPointedThing(pointed); PCALL_RES(lua_pcall(L, 3, 1, error_handler)); if (!lua_isnil(L, -1)) { try { item = read_item(L, -1, getServer()); } catch (LuaError &e) { throw LuaError(std::string(e.what()) + ". item=" + item.name); } } lua_pop(L, 2); // Pop item and error handler return true; } bool ScriptApiItem::item_OnCraft(ItemStack &item, ServerActiveObject *user, const InventoryList *old_craft_grid, const InventoryLocation &craft_inv) { SCRIPTAPI_PRECHECKHEADER int error_handler = PUSH_ERROR_HANDLER(L); lua_getglobal(L, "core"); lua_getfield(L, -1, "on_craft"); LuaItemStack::create(L, item); objectrefGetOrCreate(L, user); // Push inventory list std::vector<ItemStack> items; for (u32 i = 0; i < old_craft_grid->getSize(); i++) { items.push_back(old_craft_grid->getItem(i)); } push_items(L, items); InvRef::create(L, craft_inv); PCALL_RES(lua_pcall(L, 4, 1, error_handler)); if (!lua_isnil(L, -1)) { try { item = read_item(L,-1, getServer()); } catch (LuaError &e) { throw LuaError(std::string(e.what()) + ". item=" + item.name); } } lua_pop(L, 2); // Pop item and error handler return true; } bool ScriptApiItem::item_CraftPredict(ItemStack &item, ServerActiveObject *user, const InventoryList *old_craft_grid, const InventoryLocation &craft_inv) { SCRIPTAPI_PRECHECKHEADER int error_handler = PUSH_ERROR_HANDLER(L); lua_getglobal(L, "core"); lua_getfield(L, -1, "craft_predict"); LuaItemStack::create(L, item); objectrefGetOrCreate(L, user); //Push inventory list std::vector<ItemStack> items; for (u32 i = 0; i < old_craft_grid->getSize(); i++) { items.push_back(old_craft_grid->getItem(i)); } push_items(L, items); InvRef::create(L, craft_inv); PCALL_RES(lua_pcall(L, 4, 1, error_handler)); if (!lua_isnil(L, -1)) { try { item = read_item(L,-1, getServer()); } catch (LuaError &e) { throw LuaError(std::string(e.what()) + ". item=" + item.name); } } lua_pop(L, 2); // Pop item and error handler return true; } // Retrieves core.registered_items[name][callbackname] // If that is nil or on error, return false and stack is unchanged // If that is a function, returns true and pushes the // function onto the stack // If core.registered_items[name] doesn't exist, core.nodedef_default // is tried instead so unknown items can still be manipulated to some degree bool ScriptApiItem::getItemCallback(const char *name, const char *callbackname) { lua_State* L = getStack(); lua_getglobal(L, "core"); lua_getfield(L, -1, "registered_items"); lua_remove(L, -2); // Remove core luaL_checktype(L, -1, LUA_TTABLE); lua_getfield(L, -1, name); lua_remove(L, -2); // Remove registered_items // Should be a table if(lua_type(L, -1) != LUA_TTABLE) { // Report error and clean up errorstream << "Item \"" << name << "\" not defined" << std::endl; lua_pop(L, 1); // Try core.nodedef_default instead lua_getglobal(L, "core"); lua_getfield(L, -1, "nodedef_default"); lua_remove(L, -2); luaL_checktype(L, -1, LUA_TTABLE); } setOriginFromTable(-1); lua_getfield(L, -1, callbackname); lua_remove(L, -2); // Remove item def // Should be a function or nil if (lua_type(L, -1) == LUA_TFUNCTION) { return true; } else if (!lua_isnil(L, -1)) { errorstream << "Item \"" << name << "\" callback \"" << callbackname << "\" is not a function" << std::endl; } lua_pop(L, 1); return false; } void ScriptApiItem::pushPointedThing(const PointedThing& pointed) { lua_State* L = getStack(); 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"); objectrefGet(L, pointed.object_id); lua_setfield(L, -2, "ref"); } else { lua_pushstring(L, "nothing"); lua_setfield(L, -2, "type"); } } |