Merge remote-tracking branch 'origin/master'

1 files changed, 260 insertions, 0 deletions

diff --git a/src/script/cpp_api/s_inventory.cpp b/src/script/cpp_api/s_inventory.cpp
new file mode 100644
index 000000000..2402d198c
--- /dev/null
+++ b/src/script/cpp_api/s_inventory.cpp
@@ -0,0 +1,260 @@
+/*
+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 "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 std::string &name,
+		const std::string &from_list, int from_index,
+		const std::string &to_list, int to_index,
+		int count, ServerActiveObject *player)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Push callback function on stack
+	if(!getDetachedInventoryCallback(name, "allow_move"))
+		return count;
+
+	// function(inv, from_list, from_index, to_list, to_index, count, player)
+	// inv
+	InventoryLocation loc;
+	loc.setDetached(name);
+	InvRef::create(L, loc);
+	// from_list
+	lua_pushstring(L, from_list.c_str());
+	// from_index
+	lua_pushinteger(L, from_index + 1);
+	// to_list
+	lua_pushstring(L, to_list.c_str());
+	// to_index
+	lua_pushinteger(L, to_index + 1);
+	// count
+	lua_pushinteger(L, count);
+	// player
+	objectrefGetOrCreate(player);
+	if(lua_pcall(L, 7, 1, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+	if(!lua_isnumber(L, -1))
+		throw LuaError(L, "allow_move should return a number");
+	return luaL_checkinteger(L, -1);
+}
+
+// Return number of accepted items to be put
+int ScriptApiDetached::detached_inventory_AllowPut(
+		const std::string &name,
+		const std::string &listname, int index, ItemStack &stack,
+		ServerActiveObject *player)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Push callback function on stack
+	if(!getDetachedInventoryCallback(name, "allow_put"))
+		return stack.count; // All will be accepted
+
+	// Call function(inv, listname, index, stack, player)
+	// inv
+	InventoryLocation loc;
+	loc.setDetached(name);
+	InvRef::create(L, loc);
+	// listname
+	lua_pushstring(L, listname.c_str());
+	// index
+	lua_pushinteger(L, index + 1);
+	// stack
+	LuaItemStack::create(L, stack);
+	// player
+	objectrefGetOrCreate(player);
+	if(lua_pcall(L, 5, 1, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+	if(!lua_isnumber(L, -1))
+		throw LuaError(L, "allow_put should return a number");
+	return luaL_checkinteger(L, -1);
+}
+
+// Return number of accepted items to be taken
+int ScriptApiDetached::detached_inventory_AllowTake(
+		const std::string &name,
+		const std::string &listname, int index, ItemStack &stack,
+		ServerActiveObject *player)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Push callback function on stack
+	if(!getDetachedInventoryCallback(name, "allow_take"))
+		return stack.count; // All will be accepted
+
+	// Call function(inv, listname, index, stack, player)
+	// inv
+	InventoryLocation loc;
+	loc.setDetached(name);
+	InvRef::create(L, loc);
+	// listname
+	lua_pushstring(L, listname.c_str());
+	// index
+	lua_pushinteger(L, index + 1);
+	// stack
+	LuaItemStack::create(L, stack);
+	// player
+	objectrefGetOrCreate(player);
+	if(lua_pcall(L, 5, 1, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+	if(!lua_isnumber(L, -1))
+		throw LuaError(L, "allow_take should return a number");
+	return luaL_checkinteger(L, -1);
+}
+
+// Report moved items
+void ScriptApiDetached::detached_inventory_OnMove(
+		const std::string &name,
+		const std::string &from_list, int from_index,
+		const std::string &to_list, int to_index,
+		int count, ServerActiveObject *player)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Push callback function on stack
+	if(!getDetachedInventoryCallback(name, "on_move"))
+		return;
+
+	// function(inv, from_list, from_index, to_list, to_index, count, player)
+	// inv
+	InventoryLocation loc;
+	loc.setDetached(name);
+	InvRef::create(L, loc);
+	// from_list
+	lua_pushstring(L, from_list.c_str());
+	// from_index
+	lua_pushinteger(L, from_index + 1);
+	// to_list
+	lua_pushstring(L, to_list.c_str());
+	// to_index
+	lua_pushinteger(L, to_index + 1);
+	// count
+	lua_pushinteger(L, count);
+	// player
+	objectrefGetOrCreate(player);
+	if(lua_pcall(L, 7, 0, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+}
+
+// Report put items
+void ScriptApiDetached::detached_inventory_OnPut(
+		const std::string &name,
+		const std::string &listname, int index, ItemStack &stack,
+		ServerActiveObject *player)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Push callback function on stack
+	if(!getDetachedInventoryCallback(name, "on_put"))
+		return;
+
+	// Call function(inv, listname, index, stack, player)
+	// inv
+	InventoryLocation loc;
+	loc.setDetached(name);
+	InvRef::create(L, loc);
+	// listname
+	lua_pushstring(L, listname.c_str());
+	// index
+	lua_pushinteger(L, index + 1);
+	// stack
+	LuaItemStack::create(L, stack);
+	// player
+	objectrefGetOrCreate(player);
+	if(lua_pcall(L, 5, 0, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+}
+
+// Report taken items
+void ScriptApiDetached::detached_inventory_OnTake(
+		const std::string &name,
+		const std::string &listname, int index, ItemStack &stack,
+		ServerActiveObject *player)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Push callback function on stack
+	if(!getDetachedInventoryCallback(name, "on_take"))
+		return;
+
+	// Call function(inv, listname, index, stack, player)
+	// inv
+	InventoryLocation loc;
+	loc.setDetached(name);
+	InvRef::create(L, loc);
+	// listname
+	lua_pushstring(L, listname.c_str());
+	// index
+	lua_pushinteger(L, index + 1);
+	// stack
+	LuaItemStack::create(L, stack);
+	// player
+	objectrefGetOrCreate(player);
+	if(lua_pcall(L, 5, 0, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+}
+
+// Retrieves minetest.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, "minetest");
+	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<<"Item \""<<name<<"\" not defined"<<std::endl;
+		lua_pop(L, 1);
+		return false;
+	}
+	lua_getfield(L, -1, callbackname);
+	lua_remove(L, -2);
+	// Should be a function or nil
+	if(lua_type(L, -1) == LUA_TFUNCTION)
+	{
+		return true;
+	}
+	else if(lua_isnil(L, -1))
+	{
+		lua_pop(L, 1);
+		return false;
+	}
+	else
+	{
+		errorstream<<"Detached inventory \""<<name<<"\" callback \""
+			<<callbackname<<"\" is not a function"<<std::endl;
+		lua_pop(L, 1);
+		return false;
+	}
+}