3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include "lua_api/l_item.h"
21 #include "lua_api/l_itemstackmeta.h"
22 #include "lua_api/l_internal.h"
23 #include "common/c_converter.h"
24 #include "common/c_content.h"
28 #include "content_sao.h"
29 #include "inventory.h"
34 int LuaItemStack::gc_object(lua_State *L)
36 LuaItemStack *o = *(LuaItemStack **)(lua_touserdata(L, 1));
41 // is_empty(self) -> true/false
42 int LuaItemStack::l_is_empty(lua_State *L)
45 LuaItemStack *o = checkobject(L, 1);
46 ItemStack &item = o->m_stack;
47 lua_pushboolean(L, item.empty());
51 // get_name(self) -> string
52 int LuaItemStack::l_get_name(lua_State *L)
55 LuaItemStack *o = checkobject(L, 1);
56 ItemStack &item = o->m_stack;
57 lua_pushstring(L, item.name.c_str());
61 // set_name(self, name)
62 int LuaItemStack::l_set_name(lua_State *L)
65 LuaItemStack *o = checkobject(L, 1);
66 ItemStack &item = o->m_stack;
69 item.name = luaL_checkstring(L, 2);
70 if (item.name.empty() || item.empty()) {
75 lua_pushboolean(L, status);
79 // get_count(self) -> number
80 int LuaItemStack::l_get_count(lua_State *L)
83 LuaItemStack *o = checkobject(L, 1);
84 ItemStack &item = o->m_stack;
85 lua_pushinteger(L, item.count);
89 // set_count(self, number)
90 int LuaItemStack::l_set_count(lua_State *L)
93 LuaItemStack *o = checkobject(L, 1);
94 ItemStack &item = o->m_stack;
97 lua_Integer count = luaL_checkinteger(L, 2);
98 if (count > 0 && count <= 65535) {
106 lua_pushboolean(L, status);
110 // get_wear(self) -> number
111 int LuaItemStack::l_get_wear(lua_State *L)
113 NO_MAP_LOCK_REQUIRED;
114 LuaItemStack *o = checkobject(L, 1);
115 ItemStack &item = o->m_stack;
116 lua_pushinteger(L, item.wear);
120 // set_wear(self, number)
121 int LuaItemStack::l_set_wear(lua_State *L)
123 NO_MAP_LOCK_REQUIRED;
124 LuaItemStack *o = checkobject(L, 1);
125 ItemStack &item = o->m_stack;
128 lua_Integer wear = luaL_checkinteger(L, 2);
137 lua_pushboolean(L, status);
141 // get_meta(self) -> string
142 int LuaItemStack::l_get_meta(lua_State *L)
144 NO_MAP_LOCK_REQUIRED;
145 LuaItemStack *o = checkobject(L, 1);
146 ItemStackMetaRef::create(L, &o->m_stack);
151 // get_metadata(self) -> string
152 int LuaItemStack::l_get_metadata(lua_State *L)
154 NO_MAP_LOCK_REQUIRED;
155 LuaItemStack *o = checkobject(L, 1);
156 ItemStack &item = o->m_stack;
157 const std::string &value = item.metadata.getString("");
158 lua_pushlstring(L, value.c_str(), value.size());
163 // set_metadata(self, string)
164 int LuaItemStack::l_set_metadata(lua_State *L)
166 NO_MAP_LOCK_REQUIRED;
167 LuaItemStack *o = checkobject(L, 1);
168 ItemStack &item = o->m_stack;
171 const char *ptr = luaL_checklstring(L, 2, &len);
172 item.metadata.setString("", std::string(ptr, len));
174 lua_pushboolean(L, true);
178 // get_description(self)
179 int LuaItemStack::l_get_description(lua_State *L)
181 NO_MAP_LOCK_REQUIRED;
182 LuaItemStack *o = checkobject(L, 1);
183 std::string desc = o->m_stack.getDescription(getGameDef(L)->idef());
184 lua_pushstring(L, desc.c_str());
188 // clear(self) -> true
189 int LuaItemStack::l_clear(lua_State *L)
191 NO_MAP_LOCK_REQUIRED;
192 LuaItemStack *o = checkobject(L, 1);
194 lua_pushboolean(L, true);
198 // replace(self, itemstack or itemstring or table or nil) -> true
199 int LuaItemStack::l_replace(lua_State *L)
201 NO_MAP_LOCK_REQUIRED;
202 LuaItemStack *o = checkobject(L, 1);
203 o->m_stack = read_item(L, 2, getGameDef(L)->idef());
204 lua_pushboolean(L, true);
208 // to_string(self) -> string
209 int LuaItemStack::l_to_string(lua_State *L)
211 NO_MAP_LOCK_REQUIRED;
212 LuaItemStack *o = checkobject(L, 1);
213 std::string itemstring = o->m_stack.getItemString();
214 lua_pushstring(L, itemstring.c_str());
218 // to_table(self) -> table or nil
219 int LuaItemStack::l_to_table(lua_State *L)
221 NO_MAP_LOCK_REQUIRED;
222 LuaItemStack *o = checkobject(L, 1);
223 const ItemStack &item = o->m_stack;
231 lua_pushstring(L, item.name.c_str());
232 lua_setfield(L, -2, "name");
233 lua_pushinteger(L, item.count);
234 lua_setfield(L, -2, "count");
235 lua_pushinteger(L, item.wear);
236 lua_setfield(L, -2, "wear");
238 const std::string &metadata_str = item.metadata.getString("");
239 lua_pushlstring(L, metadata_str.c_str(), metadata_str.size());
240 lua_setfield(L, -2, "metadata");
243 const StringMap &fields = item.metadata.getStrings();
244 for (const auto &field : fields) {
245 const std::string &name = field.first;
248 const std::string &value = field.second;
249 lua_pushlstring(L, name.c_str(), name.size());
250 lua_pushlstring(L, value.c_str(), value.size());
253 lua_setfield(L, -2, "meta");
258 // get_stack_max(self) -> number
259 int LuaItemStack::l_get_stack_max(lua_State *L)
261 NO_MAP_LOCK_REQUIRED;
262 LuaItemStack *o = checkobject(L, 1);
263 ItemStack &item = o->m_stack;
264 lua_pushinteger(L, item.getStackMax(getGameDef(L)->idef()));
268 // get_free_space(self) -> number
269 int LuaItemStack::l_get_free_space(lua_State *L)
271 NO_MAP_LOCK_REQUIRED;
272 LuaItemStack *o = checkobject(L, 1);
273 ItemStack &item = o->m_stack;
274 lua_pushinteger(L, item.freeSpace(getGameDef(L)->idef()));
278 // is_known(self) -> true/false
279 // Checks if the item is defined.
280 int LuaItemStack::l_is_known(lua_State *L)
282 NO_MAP_LOCK_REQUIRED;
283 LuaItemStack *o = checkobject(L, 1);
284 ItemStack &item = o->m_stack;
285 bool is_known = item.isKnown(getGameDef(L)->idef());
286 lua_pushboolean(L, is_known);
290 // get_definition(self) -> table
291 // Returns the item definition table from registered_items,
292 // or a fallback one (name="unknown")
293 int LuaItemStack::l_get_definition(lua_State *L)
295 NO_MAP_LOCK_REQUIRED;
296 LuaItemStack *o = checkobject(L, 1);
297 ItemStack &item = o->m_stack;
299 // Get registered_items[name]
300 lua_getglobal(L, "core");
301 lua_getfield(L, -1, "registered_items");
302 luaL_checktype(L, -1, LUA_TTABLE);
303 lua_getfield(L, -1, item.name.c_str());
307 lua_getfield(L, -1, "unknown");
312 // get_tool_capabilities(self) -> table
313 // Returns the effective tool digging properties.
314 // Returns those of the hand ("") if this item has none associated.
315 int LuaItemStack::l_get_tool_capabilities(lua_State *L)
317 NO_MAP_LOCK_REQUIRED;
318 LuaItemStack *o = checkobject(L, 1);
319 ItemStack &item = o->m_stack;
320 const ToolCapabilities &prop =
321 item.getToolCapabilities(getGameDef(L)->idef());
322 push_tool_capabilities(L, prop);
326 // add_wear(self, amount) -> true/false
327 // The range for "amount" is [0,65535]. Wear is only added if the item
328 // is a tool. Adding wear might destroy the item.
329 // Returns true if the item is (or was) a tool.
330 int LuaItemStack::l_add_wear(lua_State *L)
332 NO_MAP_LOCK_REQUIRED;
333 LuaItemStack *o = checkobject(L, 1);
334 ItemStack &item = o->m_stack;
335 int amount = lua_tointeger(L, 2);
336 bool result = item.addWear(amount, getGameDef(L)->idef());
337 lua_pushboolean(L, result);
341 // add_item(self, itemstack or itemstring or table or nil) -> itemstack
342 // Returns leftover item stack
343 int LuaItemStack::l_add_item(lua_State *L)
345 NO_MAP_LOCK_REQUIRED;
346 LuaItemStack *o = checkobject(L, 1);
347 ItemStack &item = o->m_stack;
348 ItemStack newitem = read_item(L, -1, getGameDef(L)->idef());
349 ItemStack leftover = item.addItem(newitem, getGameDef(L)->idef());
354 // item_fits(self, itemstack or itemstring or table or nil) -> true/false, itemstack
355 // First return value is true iff the new item fits fully into the stack
356 // Second return value is the would-be-left-over item stack
357 int LuaItemStack::l_item_fits(lua_State *L)
359 NO_MAP_LOCK_REQUIRED;
360 LuaItemStack *o = checkobject(L, 1);
361 ItemStack &item = o->m_stack;
362 ItemStack newitem = read_item(L, 2, getGameDef(L)->idef());
364 bool fits = item.itemFits(newitem, &restitem, getGameDef(L)->idef());
365 lua_pushboolean(L, fits); // first return value
366 create(L, restitem); // second return value
370 // take_item(self, takecount=1) -> itemstack
371 int LuaItemStack::l_take_item(lua_State *L)
373 NO_MAP_LOCK_REQUIRED;
374 LuaItemStack *o = checkobject(L, 1);
375 ItemStack &item = o->m_stack;
377 if(!lua_isnone(L, 2))
378 takecount = luaL_checkinteger(L, 2);
379 ItemStack taken = item.takeItem(takecount);
384 // peek_item(self, peekcount=1) -> itemstack
385 int LuaItemStack::l_peek_item(lua_State *L)
387 NO_MAP_LOCK_REQUIRED;
388 LuaItemStack *o = checkobject(L, 1);
389 ItemStack &item = o->m_stack;
391 if(!lua_isnone(L, 2))
392 peekcount = lua_tointeger(L, 2);
393 ItemStack peekaboo = item.peekItem(peekcount);
398 LuaItemStack::LuaItemStack(const ItemStack &item):
403 const ItemStack& LuaItemStack::getItem() const
407 ItemStack& LuaItemStack::getItem()
412 // LuaItemStack(itemstack or itemstring or table or nil)
413 // Creates an LuaItemStack and leaves it on top of stack
414 int LuaItemStack::create_object(lua_State *L)
416 NO_MAP_LOCK_REQUIRED;
417 ItemStack item = read_item(L, 1, getGameDef(L)->idef());
418 LuaItemStack *o = new LuaItemStack(item);
419 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
420 luaL_getmetatable(L, className);
421 lua_setmetatable(L, -2);
424 // Not callable from Lua
425 int LuaItemStack::create(lua_State *L, const ItemStack &item)
427 NO_MAP_LOCK_REQUIRED;
428 LuaItemStack *o = new LuaItemStack(item);
429 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
430 luaL_getmetatable(L, className);
431 lua_setmetatable(L, -2);
435 LuaItemStack* LuaItemStack::checkobject(lua_State *L, int narg)
437 luaL_checktype(L, narg, LUA_TUSERDATA);
438 void *ud = luaL_checkudata(L, narg, className);
439 if(!ud) luaL_typerror(L, narg, className);
440 return *(LuaItemStack**)ud; // unbox pointer
443 void LuaItemStack::Register(lua_State *L)
446 int methodtable = lua_gettop(L);
447 luaL_newmetatable(L, className);
448 int metatable = lua_gettop(L);
450 lua_pushliteral(L, "__metatable");
451 lua_pushvalue(L, methodtable);
452 lua_settable(L, metatable); // hide metatable from Lua getmetatable()
454 lua_pushliteral(L, "__index");
455 lua_pushvalue(L, methodtable);
456 lua_settable(L, metatable);
458 lua_pushliteral(L, "__gc");
459 lua_pushcfunction(L, gc_object);
460 lua_settable(L, metatable);
462 lua_pop(L, 1); // drop metatable
464 luaL_openlib(L, 0, methods, 0); // fill methodtable
465 lua_pop(L, 1); // drop methodtable
467 // Can be created from Lua (LuaItemStack(itemstack or itemstring or table or nil))
468 lua_register(L, className, create_object);
471 const char LuaItemStack::className[] = "ItemStack";
472 const luaL_Reg LuaItemStack::methods[] = {
473 luamethod(LuaItemStack, is_empty),
474 luamethod(LuaItemStack, get_name),
475 luamethod(LuaItemStack, set_name),
476 luamethod(LuaItemStack, get_count),
477 luamethod(LuaItemStack, set_count),
478 luamethod(LuaItemStack, get_wear),
479 luamethod(LuaItemStack, set_wear),
480 luamethod(LuaItemStack, get_meta),
481 luamethod(LuaItemStack, get_metadata),
482 luamethod(LuaItemStack, set_metadata),
483 luamethod(LuaItemStack, get_description),
484 luamethod(LuaItemStack, clear),
485 luamethod(LuaItemStack, replace),
486 luamethod(LuaItemStack, to_string),
487 luamethod(LuaItemStack, to_table),
488 luamethod(LuaItemStack, get_stack_max),
489 luamethod(LuaItemStack, get_free_space),
490 luamethod(LuaItemStack, is_known),
491 luamethod(LuaItemStack, get_definition),
492 luamethod(LuaItemStack, get_tool_capabilities),
493 luamethod(LuaItemStack, add_wear),
494 luamethod(LuaItemStack, add_item),
495 luamethod(LuaItemStack, item_fits),
496 luamethod(LuaItemStack, take_item),
497 luamethod(LuaItemStack, peek_item),
505 // register_item_raw({lots of stuff})
506 int ModApiItemMod::l_register_item_raw(lua_State *L)
508 NO_MAP_LOCK_REQUIRED;
509 luaL_checktype(L, 1, LUA_TTABLE);
512 // Get the writable item and node definition managers from the server
513 IWritableItemDefManager *idef =
514 getServer(L)->getWritableItemDefManager();
515 NodeDefManager *ndef =
516 getServer(L)->getWritableNodeDefManager();
518 // Check if name is defined
520 lua_getfield(L, table, "name");
521 if(lua_isstring(L, -1)){
522 name = readParam<std::string>(L, -1);
523 verbosestream<<"register_item_raw: "<<name<<std::endl;
525 throw LuaError("register_item_raw: name is not defined or not a string");
528 // Check if on_use is defined
531 // Set a distinctive default value to check if this is set
532 def.node_placement_prediction = "__default";
534 // Read the item definition
535 read_item_definition(L, table, def, def);
537 // Default to having client-side placement prediction for nodes
538 // ("" in item definition sets it off)
539 if(def.node_placement_prediction == "__default"){
540 if(def.type == ITEM_NODE)
541 def.node_placement_prediction = name;
543 def.node_placement_prediction = "";
546 // Register item definition
547 idef->registerItem(def);
549 // Read the node definition (content features) and register it
550 if (def.type == ITEM_NODE) {
551 ContentFeatures f = read_content_features(L, table);
552 // when a mod reregisters ignore, only texture changes and such should
554 if (f.name == "ignore")
557 content_t id = ndef->set(f.name, f);
559 if (id > MAX_REGISTERED_CONTENT) {
560 throw LuaError("Number of registerable nodes ("
561 + itos(MAX_REGISTERED_CONTENT+1)
562 + ") exceeded (" + name + ")");
566 return 0; /* number of results */
569 // unregister_item(name)
570 int ModApiItemMod::l_unregister_item_raw(lua_State *L)
572 NO_MAP_LOCK_REQUIRED;
573 std::string name = luaL_checkstring(L, 1);
575 IWritableItemDefManager *idef =
576 getServer(L)->getWritableItemDefManager();
578 // Unregister the node
579 if (idef->get(name).type == ITEM_NODE) {
580 NodeDefManager *ndef =
581 getServer(L)->getWritableNodeDefManager();
582 ndef->removeNode(name);
585 idef->unregisterItem(name);
587 return 0; /* number of results */
590 // register_alias_raw(name, convert_to_name)
591 int ModApiItemMod::l_register_alias_raw(lua_State *L)
593 NO_MAP_LOCK_REQUIRED;
594 std::string name = luaL_checkstring(L, 1);
595 std::string convert_to = luaL_checkstring(L, 2);
597 // Get the writable item definition manager from the server
598 IWritableItemDefManager *idef =
599 getServer(L)->getWritableItemDefManager();
601 idef->registerAlias(name, convert_to);
603 return 0; /* number of results */
606 // get_content_id(name)
607 int ModApiItemMod::l_get_content_id(lua_State *L)
609 NO_MAP_LOCK_REQUIRED;
610 std::string name = luaL_checkstring(L, 1);
612 const NodeDefManager *ndef = getGameDef(L)->getNodeDefManager();
613 content_t c = ndef->getId(name);
615 lua_pushinteger(L, c);
616 return 1; /* number of results */
619 // get_name_from_content_id(name)
620 int ModApiItemMod::l_get_name_from_content_id(lua_State *L)
622 NO_MAP_LOCK_REQUIRED;
623 content_t c = luaL_checkint(L, 1);
625 const NodeDefManager *ndef = getGameDef(L)->getNodeDefManager();
626 const char *name = ndef->get(c).name.c_str();
628 lua_pushstring(L, name);
629 return 1; /* number of results */
632 void ModApiItemMod::Initialize(lua_State *L, int top)
634 API_FCT(register_item_raw);
635 API_FCT(unregister_item_raw);
636 API_FCT(register_alias_raw);
637 API_FCT(get_content_id);
638 API_FCT(get_name_from_content_id);