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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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