minetest.register_on_player_receive_fields()

builtin/misc_register.lua

@@ -299,6 +299,12 @@ local function make_registration()
 	return t, registerfunc
 end
 
+local function make_registration_reverse()
+	local t = {}
+	local registerfunc = function(func) table.insert(t, 1, func) end
+	return t, registerfunc
+end
+
 minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
 minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
 minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
@@ -310,4 +316,5 @@ minetest.registered_on_dieplayers, minetest.register_on_dieplayer = make_registr
 minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
 minetest.registered_on_joinplayers, minetest.register_on_joinplayer = make_registration()
 minetest.registered_on_leaveplayers, minetest.register_on_leaveplayer = make_registration()
+minetest.registered_on_player_receive_fields, minetest.register_on_player_receive_fields = make_registration_reverse()
 

doc/lua_api.txt

@@ -766,6 +766,11 @@ minetest.register_on_joinplayer(func(ObjectRef))
 minetest.register_on_leaveplayer(func(ObjectRef))
 ^ Called when a player leaves the game
 minetest.register_on_chat_message(func(name, message))
+^ Called always when a player says something
+minetest.register_on_player_receive_fields(func(player, formname, fields))
+^ Called when a button is pressed in player's inventory form
+^ Newest functions are called first
+^ If function returns true, remaining functions are not called
 
 Other registration functions:
 minetest.register_chatcommand(cmd, chatcommand definition)

src/client.cpp

@@ -1773,6 +1773,29 @@ void Client::sendNodemetaFields(v3s16 p, const std::string &formname,
 	Send(0, data, true);
 }
 	
+void Client::sendInventoryFields(const std::string &formname, 
+		const std::map<std::string, std::string> &fields)
+{
+	std::ostringstream os(std::ios_base::binary);
+
+	writeU16(os, TOSERVER_INVENTORY_FIELDS);
+	os<<serializeString(formname);
+	writeU16(os, fields.size());
+	for(std::map<std::string, std::string>::const_iterator
+			i = fields.begin(); i != fields.end(); i++){
+		const std::string &name = i->first;
+		const std::string &value = i->second;
+		os<<serializeString(name);
+		os<<serializeLongString(value);
+	}
+
+	// Make data buffer
+	std::string s = os.str();
+	SharedBuffer<u8> data((u8*)s.c_str(), s.size());
+	// Send as reliable
+	Send(0, data, true);
+}
+
 void Client::sendInventoryAction(InventoryAction *a)
 {
 	std::ostringstream os(std::ios_base::binary);

src/client.h

@@ -212,6 +212,8 @@ public:
 
 	void sendNodemetaFields(v3s16 p, const std::string &formname,
 			const std::map<std::string, std::string> &fields);
+	void sendInventoryFields(const std::string &formname,
+			const std::map<std::string, std::string> &fields);
 	void sendInventoryAction(InventoryAction *a);
 	void sendChatMessage(const std::wstring &message);
 	void sendChangePassword(const std::wstring oldpassword,

src/clientserver.h

@@ -58,7 +58,10 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	PROTOCOL_VERSION 11:
 		TileDef in ContentFeatures
 		Nodebox drawtype
-		Added after a release: TOCLIENT_INVENTORY_FORMSPEC
+		(some dev snapshot)
+		TOCLIENT_INVENTORY_FORMSPEC
+		(0.4.0, 0.4.1)
+		TOSERVER_INVENTORY_FIELDS
 */
 
 #define PROTOCOL_VERSION 11
@@ -510,6 +513,19 @@ enum ToServerCommand
 			u8[len] field value
 	*/
 
+	TOSERVER_INVENTORY_FIELDS = 0x3c,
+	/*
+		u16 command
+		u16 len
+		u8[len] form name (reserved for future use)
+		u16 number of fields
+		for each field:
+			u16 len
+			u8[len] field name
+			u32 len
+			u8[len] field value
+	*/
+
 	TOSERVER_REQUEST_MEDIA = 0x40,
 	/*
 		u16 command

src/game.cpp

@@ -111,6 +111,20 @@ struct TextDestNodeMetadata : public TextDest
 	Client *m_client;
 };
 
+struct TextDestPlayerInventory : public TextDest
+{
+	TextDestPlayerInventory(Client *client)
+	{
+		m_client = client;
+	}
+	void gotText(std::map<std::string, std::string> fields)
+	{
+		m_client->sendInventoryFields("", fields);
+	}
+
+	Client *m_client;
+};
+
 /* Respawn menu callback */
 
 class MainRespawnInitiator: public IRespawnInitiator
@@ -1507,6 +1521,7 @@ void the_game(
 			assert(src);
 			menu->setFormSpec(src->getForm(), inventoryloc);
 			menu->setFormSource(src);
+			menu->setTextDest(new TextDestPlayerInventory(&client));
 			menu->drop();
 		}
 		else if(input->wasKeyDown(EscapeKey))

src/guiFormSpecMenu.h

@@ -33,7 +33,7 @@ struct TextDest
 {
 	virtual ~TextDest() {};
 	// This is deprecated I guess? -celeron55
-	virtual void gotText(std::wstring text) = 0;
+	virtual void gotText(std::wstring text){}
 	virtual void gotText(std::map<std::string, std::string> fields) = 0;
 };
 

src/player.cpp

@@ -50,7 +50,7 @@ Player::Player(IGameDef *gamedef):
 	inventory.addList("craftresult", 1);
 
 	// Can be redefined via Lua
-	inventory_formspec =  "invsize[8,7.5;]"
+	inventory_formspec =  "size[8,7.5]"
 		//"image[1,0.6;1,2;player.png]"
 		"list[current_player;main;0,3.5;8,4;]"
 		"list[current_player;craft;3,0;3,3;]"

src/scriptapi.cpp

@@ -5238,6 +5238,40 @@ bool scriptapi_set_password(lua_State *L, const std::string &playername,
 	return lua_toboolean(L, -1);
 }
 
+/*
+	player
+*/
+
+void scriptapi_on_player_receive_fields(lua_State *L, 
+		ServerActiveObject *player,
+		const std::string &formname,
+		const std::map<std::string, std::string> &fields)
+{
+	realitycheck(L);
+	assert(lua_checkstack(L, 20));
+	StackUnroller stack_unroller(L);
+
+	// Get minetest.registered_on_chat_messages
+	lua_getglobal(L, "minetest");
+	lua_getfield(L, -1, "registered_on_player_receive_fields");
+	// Call callbacks
+	// param 1
+	objectref_get_or_create(L, player);
+	// param 2
+	lua_pushstring(L, formname.c_str());
+	// param 3
+	lua_newtable(L);
+	for(std::map<std::string, std::string>::const_iterator
+			i = fields.begin(); i != fields.end(); i++){
+		const std::string &name = i->first;
+		const std::string &value = i->second;
+		lua_pushstring(L, name.c_str());
+		lua_pushlstring(L, value.c_str(), value.size());
+		lua_settable(L, -3);
+	}
+	scriptapi_run_callbacks(L, 3, RUN_CALLBACKS_MODE_OR_SC);
+}
+
 /*
 	item callbacks and node callbacks
 */

src/scriptapi.h

@@ -69,6 +69,12 @@ void scriptapi_create_auth(lua_State *L, const std::string &playername,
 bool scriptapi_set_password(lua_State *L, const std::string &playername,
 		const std::string &password);
 
+/* player */
+void scriptapi_on_player_receive_fields(lua_State *L, 
+		ServerActiveObject *player,
+		const std::string &formname,
+		const std::map<std::string, std::string> &fields);
+
 /* item callbacks */
 bool scriptapi_item_on_drop(lua_State *L, ItemStack &item,
 		ServerActiveObject *dropper, v3f pos);

src/server.cpp

@@ -3248,6 +3248,22 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		scriptapi_node_on_receive_fields(m_lua, p, formname, fields,
 				playersao);
 	}
+	else if(command == TOSERVER_INVENTORY_FIELDS)
+	{
+		std::string datastring((char*)&data[2], datasize-2);
+		std::istringstream is(datastring, std::ios_base::binary);
+		
+		std::string formname = deSerializeString(is);
+		int num = readU16(is);
+		std::map<std::string, std::string> fields;
+		for(int k=0; k<num; k++){
+			std::string fieldname = deSerializeString(is);
+			std::string fieldvalue = deSerializeLongString(is);
+			fields[fieldname] = fieldvalue;
+		}
+
+		scriptapi_on_player_receive_fields(m_lua, playersao, formname, fields);
+	}
 	else
 	{
 		infostream<<"Server::ProcessData(): Ignoring "