====== Lucky Number ======
====I. Diagram ====
{{:developer_center:developer_editor:script:lucky_number.png?nolink&500|}}
====II. Design ====
{{:developer_center:developer_editor:script:lucky_number_1.png?nolink&1920|}}
//You need to add a input box. Player enter string in the input box//
====III. Script====
	local _input_string = nil --- fill your element	
	function game(event) 
		if _input_string == event.uielement then
        	local variable_lucky_number = math.random(0, 100)
        	if string.find(event.content, variable_lucky_number) then
            		Chat:sendSystemMsg("Congratulation! Your lucky number is: " .. variable_lucky_number)
        	else
            		Chat:sendSystemMsg("Error Code " .. variable_lucky_number)
        	end
    		end
	end
	ScriptSupportEvent:registerEvent('UI.LostFocus',game)
==== IV. Explanation====
Line 1: 
	local _input_string = nil --- fill your element	

  * **Local**: This keyword is used to declare a variable with local scope, which means it’s only accessible within the block of code where it’s defined.
  * **_input_string**: This is a variable name. You can change to another name, but if your variable has 2 letters, you need to add **_** to replace for space character
  * **nil**: This is a special value, it doesn't have any specific values. You need to change it to fit your map
  * **- - - fill your element**: This comment line will help others understand your code

Line 2 - 10:
	function game(event) 
		if _input_string == event.uielement then
        	local variable_lucky_number = math.random(0, 100)
        	if string.find(event.content, variable_lucky_number) then
            		Chat:sendSystemMsg("Congratulation! Your lucky number is: " .. variable_lucky_number)
        	else
            		Chat:sendSystemMsg("Error Code " .. variable_lucky_number)
        	end
    		end
	end

  * **function game(event) ... end**: for Lua script, you need to call the function. It is the same actions in trigger. 
  * Function must have end and ** a variable name, here "game" is variable name"**. You need it to register the event.
  * ** if _input_string == event.uielement then ... end**: This condition will compare your string with lucky number, if they're the same - the game will chat " **Congratulation! Your lucky number is: " .. variable_lucky_number**". However, they aren't the same - the game will chat " **Error Code " .. variable_lucky_number**". 

Line 5: 
        if string.find(event.content, variable_lucky_number) then
        

  * **if:** This starts a conditional statement in Lua.
  * **string.find:** This is a function in Lua’s string library that searches for a pattern in a given string. It returns the start and end indices of the first occurrence of the pattern if it’s found, or nil if it’s not found.
  * **event.content:** This likely refers to a string that is part of an event object, which might contain text that you want to search through.
  * **variable_lucky_number:** This is a variable that holds the pattern you’re searching for within event.content.
  * **then:** This indicates the beginning of the block of code that will execute if the condition is true.

The last line:
	ScriptSupportEvent:registerEvent('UI.LostFocus',game)

  * **ScriptSupportEvent:registerEvent(EventName, FunctionToExecute):** This method is used to register an event listener.
  * **EventName:** This is the name of the event you want to listen for.
  * **FunctionToExecute:** This is the function that will be called when the event occurs.


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