Add basic things attributes modification talkaction (#3587)

data/talkactions/scripts/attributes.lua

@@ -0,0 +1,48 @@
+function onSay(player, words, param)
+	if not player:getGroup():getAccess() then
+		return true
+	end
+
+	local position = player:getPosition()
+	position:getNextPosition(player:getDirection())
+
+	local tile = Tile(position)
+	if not tile then
+		player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "There is no tile in front of you.")
+		return false
+	end
+
+	local thing = tile:getTopVisibleThing(player)
+	if not thing then
+		player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "There is an empty tile in front of you.")
+		return false
+	end
+
+	local separatorPos = param:find(',')
+	if not separatorPos then
+		player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, string.format("Usage: %s attribute, value.", words))
+		return false
+	end
+
+	local attribute = string.trim(param:sub(0, separatorPos - 1))
+	local value = string.trim(param:sub(separatorPos + 1))
+
+	if thing:isItem() then
+		local attributeId = Game.getItemAttributeByName(attribute)
+		if attributeId == ITEM_ATTRIBUTE_NONE then
+			player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Invalid attribute name.")
+			return false
+		end
+
+		if not thing:setAttribute(attribute, value) then
+			player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Could not set attribute.")
+			return false
+		end
+
+		player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, string.format("Attribute %s set to: %s", attribute, thing:getAttribute(attributeId)))
+		position:sendMagicEffect(CONST_ME_MAGIC_GREEN)
+	else
+		player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Thing in front of you is not supported.")
+		return false
+	end
+end

data/talkactions/talkactions.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <talkactions>
 	<!-- commands -->
+	<talkaction words="/attr" separator=" " script="attributes.lua" />
 	<talkaction words="/ban" separator=" " script="ban.lua" />
 	<talkaction words="/ipban" separator=" " script="ipban.lua" />
 	<talkaction words="/unban" separator=" " script="unban.lua" />

src/luascript.cpp

@@ -2039,6 +2039,7 @@ void LuaScriptInterface::registerFunctions()
 	registerMethod("Game", "getWorldType", LuaScriptInterface::luaGameGetWorldType);
 	registerMethod("Game", "setWorldType", LuaScriptInterface::luaGameSetWorldType);
 
+	registerMethod("Game", "getItemAttributeByName", LuaScriptInterface::luaGameGetItemAttributeByName);
 	registerMethod("Game", "getReturnMessage", LuaScriptInterface::luaGameGetReturnMessage);
 
 	registerMethod("Game", "createItem", LuaScriptInterface::luaGameCreateItem);
@@ -4379,6 +4380,13 @@ int LuaScriptInterface::luaGameGetReturnMessage(lua_State* L)
 	return 1;
 }
 
+int LuaScriptInterface::luaGameGetItemAttributeByName(lua_State* L)
+{
+	// Game.getItemAttributeByName(name)
+	lua_pushnumber(L, stringToItemAttribute(getString(L, 1)));
+	return 1;
+}
+
 int LuaScriptInterface::luaGameCreateItem(lua_State* L)
 {
 	// Game.createItem(itemId[, count[, position]])

src/luascript.h

@@ -562,6 +562,7 @@ class LuaScriptInterface
 		static int luaGameGetWorldType(lua_State* L);
 		static int luaGameSetWorldType(lua_State* L);
 
+		static int luaGameGetItemAttributeByName(lua_State* L);
 		static int luaGameGetReturnMessage(lua_State* L);
 
 		static int luaGameCreateItem(lua_State* L);