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| |_ _____  _| |_ _ __ ___   ___   __| | ___ 
| __/ _ \ \/ / __| '_ ` _ \ / _ \ / _` |/ _ \
| ||  __/>  <| |_| | | | | | (_) | (_| |  __/
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« v1.5 v1.5.1

Textmode is a mini-library that emulates the classical console textmode.

This is how it works:

HTML 
<pre id="monitor"></pre>
JAVASCRIPT 
var m = make_screen(10, 30);
m.monitor("monitor");
m.bgcolor("red").textcolor("white").clrscr().gotoxy(2, 1).write("Hello, world!");
OUTPUT



Why?


While diving inside my old files I found a snake game I wrote in pascal when I was sixteen. Taken by a wave of nostalgia I decided to port it in javascript to make it work in a webpage.


Being it based exclusively on ASCII graphics, I thought to write a textmode compatibility layer.. textmode.


A demo.. or the game
 (don't blame me, I lost it too.)


So here it is the snake game based on textmode.


Source code



What's new in v1.5.1


From v1.0


API


Constructor

make_screen(height, width)





Where possible functions are chainable.



  
    

      functiondescription
    

  
  
    

      

monitor(id)


      		
      
	Binds this object to a PRE element whose id is id.
      
    

    

      

clrscr()
clear()
cls()


      		
      
	Clear the screen
      
    

    

      

gotoxy(x, y)
at(y, x)


      		
      
	Moves the cursor at the given coordinates
      
    

    

      

wherex()


      		
      
	Returns the current x coordinate
      
    

    

      
	
wherey()


      		
      
	Returns the current y coordinate
      
    

    

      
	
whereyx()


      		
      
	Returns the current coordinates as [y, x]
      
    

    

      
	
write(str)


      		
      
	Prints str on the screen
      
    

    

      
	
writeln(str)


      		
      
	Prints str on the screen followed by a newline character
      
    

    

      
	
colormode()
colormode(true/false)


      		
      If no argument is specified it returns true if the screen is in colormode, false otherwise. If the boolean argument is specified it enables/disables colormode. If colors and styles are not used it is better to disable colormode to improve efficiency.
      
    

    

      
	
textcolor()
textcolor(color)


      		
      
	If color is not supplied it returns current foreground color. If color is supplied it is used as text foreground color. color is a string with a valid CSS color (e.g. 
"#ffffff", "navy"
)
      		
    

    

      
	
bgcolor()
bgcolor(color)


      		
      
	If color is not supplied it returns current background color. If color is supplied it is used as text background color. color is a string with a valid CSS color (e.g. 
"#ffffff", "navy"
)
      		
    

    

      
	
bold()
bold(true/false)


      		
      
	If no argument is specified it returns whether current text style is bold or not. If the boolean argument is supplied it sets current text style to bold or not bold.
      
    

    

      
	
italic()
italic(true/false)


      		
      
	If no argument is specified it returns whether current text style is italic or not. If the boolean argument is supplied it sets current text style to italic or not italic.
      
    

    

      
	
saving_style(fn)


      		
      
	It executes the fn function, restoring previous text styles after the function returns.
      
    

    

      
	
dump()


      		
      
	Returns current content of the screen
      
    

    

      
	
restore(d)


      		
      
	Restores the d dump of the screen
      
    

    

      
	
begin()


      		
      
	Begins a series of operations
      
    

    

      
	
end()


      		
      
	Ends a series of operations (started by begin.)
      
    

  



Bugs


If the output exceeds the last row, the screen won't scroll down.


It doesn't support colors yet (and probably never will :). Colors support added in v1.5.


Very probably many others..




Dom De Felice