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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.
- */
- #include "cpp_api/s_inventory.h"
- #include "cpp_api/s_internal.h"
- #include "inventorymanager.h"
- #include "lua_api/l_inventory.h"
- #include "lua_api/l_item.h"
- #include "log.h"
- // Return number of accepted items to be moved
- int ScriptApiDetached::detached_inventory_AllowMove(
- const MoveAction &ma, int count,
- ServerActiveObject *player)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Push callback function on stack
- if (!getDetachedInventoryCallback(ma.from_inv.name, "allow_move"))
- return count;
- // function(inv, from_list, from_index, to_list, to_index, count, player)
- // inv
- InvRef::create(L, ma.from_inv);
- lua_pushstring(L, ma.from_list.c_str()); // from_list
- lua_pushinteger(L, ma.from_i + 1); // from_index
- lua_pushstring(L, ma.to_list.c_str()); // to_list
- lua_pushinteger(L, ma.to_i + 1); // to_index
- lua_pushinteger(L, count); // count
- objectrefGetOrCreate(L, player); // player
- PCALL_RES(lua_pcall(L, 7, 1, error_handler));
- if(!lua_isnumber(L, -1))
- throw LuaError("allow_move should return a number. name=" + ma.from_inv.name);
- int ret = luaL_checkinteger(L, -1);
- lua_pop(L, 2); // Pop integer and error handler
- return ret;
- }
- // Return number of accepted items to be put
- int ScriptApiDetached::detached_inventory_AllowPut(
- const MoveAction &ma, const ItemStack &stack,
- ServerActiveObject *player)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Push callback function on stack
- if (!getDetachedInventoryCallback(ma.to_inv.name, "allow_put"))
- return stack.count; // All will be accepted
- // Call function(inv, listname, index, stack, player)
- InvRef::create(L, ma.to_inv); // inv
- lua_pushstring(L, ma.to_list.c_str()); // listname
- lua_pushinteger(L, ma.to_i + 1); // index
- LuaItemStack::create(L, stack); // stack
- objectrefGetOrCreate(L, player); // player
- PCALL_RES(lua_pcall(L, 5, 1, error_handler));
- if (!lua_isnumber(L, -1))
- throw LuaError("allow_put should return a number. name=" + ma.to_inv.name);
- int ret = luaL_checkinteger(L, -1);
- lua_pop(L, 2); // Pop integer and error handler
- return ret;
- }
- // Return number of accepted items to be taken
- int ScriptApiDetached::detached_inventory_AllowTake(
- const MoveAction &ma, const ItemStack &stack,
- ServerActiveObject *player)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Push callback function on stack
- if (!getDetachedInventoryCallback(ma.from_inv.name, "allow_take"))
- return stack.count; // All will be accepted
- // Call function(inv, listname, index, stack, player)
- InvRef::create(L, ma.from_inv); // inv
- lua_pushstring(L, ma.from_list.c_str()); // listname
- lua_pushinteger(L, ma.from_i + 1); // index
- LuaItemStack::create(L, stack); // stack
- objectrefGetOrCreate(L, player); // player
- PCALL_RES(lua_pcall(L, 5, 1, error_handler));
- if (!lua_isnumber(L, -1))
- throw LuaError("allow_take should return a number. name=" + ma.from_inv.name);
- int ret = luaL_checkinteger(L, -1);
- lua_pop(L, 2); // Pop integer and error handler
- return ret;
- }
- // Report moved items
- void ScriptApiDetached::detached_inventory_OnMove(
- const MoveAction &ma, int count,
- ServerActiveObject *player)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Push callback function on stack
- if (!getDetachedInventoryCallback(ma.from_inv.name, "on_move"))
- return;
- // function(inv, from_list, from_index, to_list, to_index, count, player)
- // inv
- InvRef::create(L, ma.from_inv);
- lua_pushstring(L, ma.from_list.c_str()); // from_list
- lua_pushinteger(L, ma.from_i + 1); // from_index
- lua_pushstring(L, ma.to_list.c_str()); // to_list
- lua_pushinteger(L, ma.to_i + 1); // to_index
- lua_pushinteger(L, count); // count
- objectrefGetOrCreate(L, player); // player
- PCALL_RES(lua_pcall(L, 7, 0, error_handler));
- lua_pop(L, 1); // Pop error handler
- }
- // Report put items
- void ScriptApiDetached::detached_inventory_OnPut(
- const MoveAction &ma, const ItemStack &stack,
- ServerActiveObject *player)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Push callback function on stack
- if (!getDetachedInventoryCallback(ma.to_inv.name, "on_put"))
- return;
- // Call function(inv, listname, index, stack, player)
- // inv
- InvRef::create(L, ma.to_inv);
- lua_pushstring(L, ma.to_list.c_str()); // listname
- lua_pushinteger(L, ma.to_i + 1); // index
- LuaItemStack::create(L, stack); // stack
- objectrefGetOrCreate(L, player); // player
- PCALL_RES(lua_pcall(L, 5, 0, error_handler));
- lua_pop(L, 1); // Pop error handler
- }
- // Report taken items
- void ScriptApiDetached::detached_inventory_OnTake(
- const MoveAction &ma, const ItemStack &stack,
- ServerActiveObject *player)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- // Push callback function on stack
- if (!getDetachedInventoryCallback(ma.from_inv.name, "on_take"))
- return;
- // Call function(inv, listname, index, stack, player)
- // inv
- InvRef::create(L, ma.from_inv);
- lua_pushstring(L, ma.from_list.c_str()); // listname
- lua_pushinteger(L, ma.from_i + 1); // index
- LuaItemStack::create(L, stack); // stack
- objectrefGetOrCreate(L, player); // player
- PCALL_RES(lua_pcall(L, 5, 0, error_handler));
- lua_pop(L, 1); // Pop error handler
- }
- // Retrieves core.detached_inventories[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
- bool ScriptApiDetached::getDetachedInventoryCallback(
- const std::string &name, const char *callbackname)
- {
- lua_State *L = getStack();
- lua_getglobal(L, "core");
- lua_getfield(L, -1, "detached_inventories");
- lua_remove(L, -2);
- luaL_checktype(L, -1, LUA_TTABLE);
- lua_getfield(L, -1, name.c_str());
- lua_remove(L, -2);
- // Should be a table
- if (lua_type(L, -1) != LUA_TTABLE) {
- errorstream<<"Detached inventory \""<<name<<"\" not defined"<<std::endl;
- lua_pop(L, 1);
- return false;
- }
- setOriginFromTable(-1);
- lua_getfield(L, -1, callbackname);
- lua_remove(L, -2);
- // Should be a function or nil
- if (lua_type(L, -1) == LUA_TFUNCTION) {
- return true;
- }
- if (lua_isnil(L, -1)) {
- lua_pop(L, 1);
- return false;
- }
- errorstream << "Detached inventory \"" << name << "\" callback \""
- << callbackname << "\" is not a function" << std::endl;
- lua_pop(L, 1);
- return false;
- }
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