OpenEuphoria

RE: Help with coding

• Posted by Travis Weddle <Weddle at tcia.net> Jul 21, 2001
• 349 views

Ok--I think I some what understand where this is headed, now what i need 
to know is how do i "link" the pushbuttons with the actions, and the 
checker pieces to move them.?

irvm at ellijay.com wrote:
> On Friday 20 July 2001 20:04, Travis Weddle wrote:
> 
> > I really need help on reading the list of moves and applying them, i can
> > get the window, and i'm pretty sure i can set all the bitmaps where they
> > need to be. (that is if it allows a bitmap to be placed over a bitmap?)
> 
> There are probably a dozen ways to do this, here's one:
> If you use a plain text file for the moves: 
> 11, 15
> 23, 26
> ...
> etc., with the numbers separated either by commas or by 
> spaces, like this:
> 11 15
> 23 26
> ...
> then I would suggest just reading them into a list:
> 
> include file.e
> include get.e
> 
> constant SOURCE = 1, DESTINATION = 2 
> atom fn
> object source, destination
> sequence moves
> 
> fn = open("moves.txt","r")
> moves = {}
> while 1 do
>   source = get(fn) -- get the first number
>   if source[1] = -1 then exit -- EOF
>   else
>      destination = get(fn) -- get the second number
>      moves =  append(moves,{source[2],destination[2]})
>   end if
> end while
> close(fn)
> ? moves
> 
> This gives a list like the following:
> {{11,15},{23,26},{26,35},{52,44}}    
> 
> You can set a pointer to the start of the list, and advance it 
> when the "next" button is pushed.
> 
> Going forward thru the list should be simple; increment the 
> pointer by 1, and move checker from move[pointer][SOURCE] to 
> move[pointer][DESTINATION], 
> Backing up would seem to call for first undoing the move most 
> recently made, which will be at the current pointer.
> You can probably do that by simply reversing the source 
> and destination, i.e. move checker from move[pointer][DESTINATION] to 
> move[pointer][SOURCE].  Then decrement the pointer.
> Don't let the pointer go below 1, or higher than the length of 
> the moves list.
> 
> Before either move, you'll have to find out which color checker 
> is being moved, so you can show the correct bitmap at the 
> new location.
> 
> How to do that? There's probably a way you could get the info 
> from windows, but it may be easier to just keep an array and 
> update it with every move.  That will also have value if in the 
> future you want to add the ability to check for legal moves,
> be able to save and restore a game, etc.
> 
> Something like:
> sequence a = repeat(0,64) 
> -- where 0 means empty, 1 = black, -1 = red
> 
> a[1..16] = 1
> a[49..64] = -1
> 
> with each move:
> a[destination] = a[source] -- copies the color of checker into dest.
> a[source] = 0 -- empties source square.
> 
> when drawing the checker, 
> if a[DESTINATION] = -1 then -- use red checker bmp
> else -- use black checker bmp.
> 
> I'm not sure about Windows, but you may be able to put both 
> colors of checker in each square, and only show the color 
> you want there (or none at all)
> 
> Hope that helps,
> Regards,
> Irv
> 
> 



Trav