How can i get my code not to flacker?;D

[munt4life]

var x, y : int
var top, bottom, left, right : boolean := false
x := 100
y := 100
var chars : array char of boolean
loop
Input.KeyDown (chars)

if chars (KEY_UP_ARROW) and (y < 375) then
y := y + 5
if y = 370 then
top := true
end if
end if

if chars (KEY_RIGHT_ARROW) and (x < 615) then
x := x + 5
if x=610 then
right:=true
end if
end if

if chars (KEY_LEFT_ARROW) and (x > 0) then
x := x - 5
if x=0 then
left:=true
end if
end if

if chars (KEY_DOWN_ARROW) and y > 0 then
y := y - 5
if y=0 then
bottom:=true
end if
end if

if top = true then
drawline (0, maxy, maxx, maxy, red)
end if

if bottom = true then
drawline(0,0,maxx,0,red)
end if

if left= true then
drawline(0,0,0,maxy,red)
end if

if right= true then
drawline(maxx,0,maxx,maxy,red)
end if

drawbox (x, y, 20 + x, 20 + y, red)
delay (10)
cls

[Insectoid]

Use the site's search function. There are lots of tutorials on this, all of which tell you the same thing.

[ProgrammingFun]

EDIT: I didn't notice that Insectoid already posted

You should try to use View.offscreenonly (I have forgotten if it looked exactly like that) to draw the shapes...this would diminish the flickering.

Please try to use the given template when posting questions and plz also try to use syntax tags like the following:

Syntax:

No "-" should actually be in the brackets (I used it so that it doesnt show up as a code block:        [-Syntax="turing"]Your code here...[/-Syntax]

so that you code would appear as follows:

Turing:

var x, y : int var top, bottom, left, right : boolean := false x := 100 y := 100 var chars : array char of boolean loop     Input.KeyDown (chars)     if chars (KEY_UP_ARROW) and (y < 375) then         y := y + 5         if y = 370 then             top := true         end if     end if     if chars (KEY_RIGHT_ARROW) and (x < 615) then         x := x + 5         if x = 610 then             right := true         end if     end if     if chars (KEY_LEFT_ARROW) and (x > 0) then         x := x - 5         if x = 0 then             left := true         end if     end if     if chars (KEY_DOWN_ARROW) and y > 0 then         y := y - 5         if y = 0 then             bottom := true         end if     end if     if top = true then         drawline (0, maxy, maxx, maxy, red)     end if     if bottom = true then         drawline (0, 0, maxx, 0, red)     end if     if left = true then         drawline (0, 0, 0, maxy, red)     end if     if right = true then         drawline (maxx, 0, maxx, maxy, red)     end if     drawbox (x, y, 20 + x, 20 + y, red)     delay (10)     cls end loop

[/b]

[munt4life]

I have but i still cant seem to get it to work

[ProgrammingFun]

The following was taken from the Turing FAQ:

TheOneTrueGod @ Sun Jun 04, 2006 9:19 am wrote:

Q: Why is my program flickery?
Ans: You aren't using View.Set ("offscreenonly") and View.Update or you aren't using them properly.
The order of code should be as follows:

code:

View.Set("offscreenonly") % Make sure this is spelled EXACTLY as is. loop    % Draw your images before the View.Update    %Notice this gap here.  DO NOT 'View.Update' WHILE you are drawing.  'View.Update' AFTER you are done drawing.    View.Update    % delay (preferably using Time.DelaySinceLast)    cls end loop

If "offscreenonly" is not spelled right, it will not work.
Generally, if you have more than one View.Update, you're using it wrong. (This includes if you have it inside a for loop somewhere)

An explanation:
View.Set('offscreeonly') will initiate double buffering. This means Turing will draw everything to a "back buffer", which is invisible, elsewhere. Its an 'imaginary' piece of space somewhere in memory. You will never see what is being drawn there until you 'flip' it onto the screen, using View.Update. "View.Update" copies the entire back buffer to the front buffer, where it becomes visible in the Turing run window. This is why, when you use offscreenonly, you cannot see what you are writing when you use the command "get".

To remedy the "I can't see what I'm inputting" problem, simply reset offscreenonly by using

code:

View.Set('nooffscreeonly')

[SS1389]

Very nice way to utilize your resources.

[ProgrammingFun]

SS1389 @ Sun Dec 26, 2010 6:09 pm wrote:

Very nice way to utilize your resources.

Indeed...that was the point