Difference between revisions of "Chess game"

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m (actually, i'll just use a link to the source, better for wiki's DB)
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[[:Image:Chess selection.jpg|Screenshot of the gameplay]]
 
[[:Image:Chess selection.jpg|Screenshot of the gameplay]]
 
Dload the .mrc: http://lost.kapsi.fi/cail/chess.mrc
 
  
 
== Source ==
 
== Source ==
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
;
 
; Chess game with picture windows by Cail at Quakenet -> #help.script
 
;
 
; The singleplayer mode is only for debugging and testing.
 
; Multiplayer was the main idea, you can use sockets or IRC to play (read help).
 
; The game will download the pieces automatically and put them into right place,
 
; If you are experiencing problems with the game's download, get the image from: <nowiki>http://lost.kapsi.fi/cail/pieces.png</nowiki>
 
; (images originally from mediawiki, by Wapcaplet) and put them into /mircdir/chess directory.
 
;
 
; Type /chess to start the game.
 
; Also support saving and loading the game state.
 
; Includes logging of moves, shows last move all the time, and last 40/24 moves in a sidepanel, which can be toggled on/off.
 
;
 
; Be sure to read the help for full description of all features.
 
;
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 
alias chess {
 
  if ($hget(chess.board))    { hfree chess.board } | hmake chess.board 100
 
  if ($hget(chess.info))    { hfree chess.info } | hmake chess.info 100
 
  if ($hget(chess.options))  { hfree chess.options } | hmake chess.options 100
 
  if ($exists(chess/options.hsh)) { hload chess.options chess/options.hsh }
 
  else {
 
    hadd chess.options size 100
 
    hadd chess.options log_format 1
 
    hadd chess.options send_method msg
 
    hadd chess.options frames 1
 
  }
 
 
  window -adfpw0C +nft @chess 0 0 $calc(($hget(chess.options,size) *8) +240) $calc(($hget(chess.options,size) *8) +50)
 
  drawrect -rf @chess 3684408 0 0 0 $calc(($hget(chess.options,size) *8) +240) $calc(($hget(chess.options,size) *8) +50)
 
 
  log_show -200
 
  hadd chess.info log_lines 0
 
 
  drawrect -r @chess 65280 1 60 $iif($hget(chess.options,size) == 100,320,140) 300 50
 
  drawrect -r @chess 65280 1 60 $iif($hget(chess.options,size) == 100,380,200) 300 50
 
  drawrect -r @chess 65280 1 60 $iif($hget(chess.options,size) == 100,440,260) 300 50
 
  drawrect -r @chess 65280 1 60 $iif($hget(chess.options,size) == 100,500,320) 300 50
 
 
  drawtext -ro @chess 16749691 verdana 22 70 $iif($hget(chess.options,size) == 100,330,150) single player (debug)
 
  drawtext -ro @chess 16749691 verdana 22 70 $iif($hget(chess.options,size) == 100,390,210) connect to a server
 
  drawtext -ro @chess 16749691 verdana 22 70 $iif($hget(chess.options,size) == 100,450,270) start a server
 
  drawtext -ro @chess 16749691 verdana 22 70 $iif($hget(chess.options,size) == 100,510,330) help
 
 
  if (!$exists(chess/pieces.png)) { noop $dialog(chess_getimg,chess_getimg) }
 
}
 
 
menu @chess {
 
  sclick: chess_sclick
 
  dclick: chess_dclick
 
  options:noop $dialog(chess_options,chess_options)
 
  help:url -n http://wiki.prco23.org/index.php/Chess_game#Help
 
  $iif($hget(chess.info,init),save):chess_save
 
  $iif($hget(chess.info,init),load):chess_load $$dialog(load_table,load_table)
 
  $iif($hget(chess.info,mode) == mp,send msg):noop $dialog(chess_send_pm,chess_send_pm)
 
 
  $iif($inrect($mouse.x,$mouse.y,$iif($hget(chess.options,size) == 100,840,520),20,200,$iif($hget(chess.options,size) == 100,840,520)),-)
 
  $iif($inrect($mouse.x,$mouse.y,$iif($hget(chess.options,size) == 100,840,520),20,200,$iif($hget(chess.options,size) == 100,840,520)),save log):log_save
 
}
 
 
on *:close:@chess:{
 
  hfree chess.board
 
  hfree chess.info
 
  hfree chess.options
 
 
  if ($exists(chess/temp.log)) { .remove chess/temp.log }
 
  if ($sock(chess_connect)) { sockclose chess_connect }
 
  if ($sock(chess)) { sockclose chess }
 
 
  if ($hget(chess.info,con_type) == irc) { chess_send disconnect | .disable #chess.n }
 
}
 
 
on *:active:@chess:{ titlebar @chess }
 
 
dialog load_table {
 
  title "Chess"
 
  size -1 -1 422 220
 
  option pixels
 
 
  text "Select a saved game.", 1, 7 5 417 20,result
 
  list 2, 5 25 410 200, sort
 
  button "", 3, -20 -20 1 1, ok
 
}
 
 
on 1:dialog:load_table:init:*:{
 
  noop $findfile(chess,*board*.save,0,parse_save $1-)
 
}
 
 
alias -l parse_save {
 
  noop $regex($1-,/\\([^\\]+)_board_(.+)\.save/g)
 
  var %s = $gettok($regml(1),-1,45)
 
  did -a $dname 2 $gettok($regml(1),-4--2,45) $+($mid(%s,1,2),:,$mid(%s,3,2),:,$mid(%s,5,2)) - $regml(2)
 
}
 
 
on 1:dialog:load_table:dclick:2:{
 
  did -ra $dname 1 $did($dname,2).seltext
 
  dialog -k $dname
 
}
 
 
alias chess_restart {
 
  hadd chess.info restart 1
 
  window -c @chess
 
  window -adfpw0C +nft @chess 0 0 $calc(($hget(chess.options,size) *8) +240) $calc(($hget(chess.options,size) *8) +60)
 
  drawrect -rf @chess 3684408 0 0 0 $calc(($hget(chess.options,size) *8) +240) $calc(($hget(chess.options,size) *8) +60)
 
  drawrect -r @chess 22456 3 17 17 $iif($hget(chess.options,size) == 100,806,486) $iif($hget(chess.options,size) == 100,806,486)
 
 
  hadd chess.info log_lines 0
 
  if ($exists(chess/temp.log)) { filter -fk chess/temp.log filter_log * }
 
  hdel chess.info log_shown
 
  hdel chess.info log_show
 
  log_show -200
 
 
  chess_load
 
  hdel chess.info restart
 
}
 
 
alias -l chess_load {
 
  if (!$hget(chess.info,restart)) {
 
    hdel -w chess.board *
 
    hdel -w chess.info *
 
    hload chess.board $+(chess\,$+($1,-,$remove($2,:)),_board_,$4,.save)
 
    hload chess.info $+(chess\,$+($1,-,$remove($2,:)),_info_,$4,.save)
 
  }
 
  var %y = 1
 
  while (%y <= 8) {
 
    var %x = 1
 
    while (%x <= 8) {
 
      var %dx = $get_square(%x)
 
      var %dy = $get_square(%y)
 
      drawrect -rf @chess $get_color(%x,%y) 0 %dx %dy $hget(chess.options,size) $hget(chess.options,size)
 
      if ($hget(chess.board,$+(%y,%x))) { draw_piece %dx %dy $v1 $get_color(%x,%y) }
 
 
      var %alph = $gettok(A B C D E F G H I J K L M,$iif($hget(chess.info,clr_own) == w,%x,$calc(9 - %x)),32)
 
      var %xz = $calc((($hget(chess.options,size) * %x) + ($hget(chess.options,size)/2+15)) - $hget(chess.options,size))
 
      drawtext -ro @chess 16749691 verdana 16 %xz 0 %alph
 
 
      inc %x
 
    } 
 
 
    var %yz = $calc((($hget(chess.options,size) * %y) + ($hget(chess.options,size)/2+10)) - $hget(chess.options,size))
 
    drawtext -ro @chess 16749691 verdana 16 5 %yz $iif($hget(chess.info,clr_own) == w,$calc(9 - %y),%y)
 
 
    inc %y
 
  }
 
 
  if ($hget(chess.info,mode) == mp) && (!$hget(chess.info,restart)) {
 
    chess_send load $1 $3
 
    if ($hget(chess.info,own_turn)) { print_info light_blue Game loaded succesfully, your turn. }
 
    else { print_info light_blue Game loaded succesfully, $hget(chess.info,opponent) $+ 's turn. }
 
  }
 
}
 
 
alias -l chess_save {
 
  hsave chess.board $+(chess/,$asctime(yyyy-mm-dd-hhnnss),_board_,$iif($hget(chess.info,mode) == sp,singleplayer,$hget(chess.info,opponent)),.save)
 
  hsave chess.info $+(chess/,$asctime(yyyy-mm-dd-hhnnss),_info_,$iif($hget(chess.info,mode) == sp,singleplayer,$hget(chess.info,opponent)),.save)
 
}
 
 
alias -l chess_initiate {
 
  drawrect -r @chess 22456 3 17 17 $iif($hget(chess.options,size) == 100,806,486) $iif($hget(chess.options,size) == 100,806,486)
 
  hadd chess.info clr_select blue
 
 
  var %y = 1
 
  while (%y <= 8) {
 
    var %x = 1
 
    while (%x <= 8) {
 
      var %dx = $get_square(%x)
 
      var %dy = $get_square(%y)
 
      drawrect -rf @chess $get_color(%x,%y) 0 %dx %dy $hget(chess.options,size) $hget(chess.options,size)
 
      if ($get_piece(%y,%x)) { hadd chess.board $+(%y,%x) $v1 | draw_piece %dx %dy $v1 $get_color(%x,%y) }
 
 
      var %alph = $gettok(A B C D E F G H I J K L M,$iif($hget(chess.info,clr_own) == w,%x,$calc(9 - %x)),32)
 
      var %xz = $calc((($hget(chess.options,size) * %x) + ($hget(chess.options,size)/2+15)) - $hget(chess.options,size))
 
      drawtext -ro @chess 16749691 verdana 16 %xz 0 %alph
 
 
      inc %x
 
    } 
 
 
    var %yz = $calc((($hget(chess.options,size) * %y) + ($hget(chess.options,size)/2+10)) - $hget(chess.options,size))
 
    drawtext -ro @chess 16749691 verdana 16 5 %yz $iif($hget(chess.info,clr_own) == w,$calc(9 - %y),%y)
 
 
    inc %y 
 
  }
 
}
 
 
alias -l chess_dclick {
 
  if (!$inrect($mouse.x,$mouse.y,$iif($hget(chess.options,size) == 100,840,520),20,200,$iif($hget(chess.options,size) == 100,840,520))) { return }
 
  var %n = $calc($hget(chess.info,log_lines) - $iif($hget(chess.options,size) == 100,40,24))
 
  var %n = $calc($abs(%n) %n)
 
 
  var %log_line = $read(chess/temp.log,$calc($left($calc(($mouse.y *100) /20),-2) + %n))
 
  var %clr = $iif($gettok(%log_line,1,32) == white,w,b)
 
 
  if ($gettok(%log_line,2,32) == 0-0) {
 
    var %f.y = $iif($gettok(%log_line,1,32) == light_blue,8,1)
 
 
    if ($hget(chess.info,clr_own) == w) {
 
      var %f.y = $calc(9 - %f.y)
 
    }
 
 
    var %x1 = $iif($hget(chess.info,clr_own) == w,5,1)
 
    var %x2 = $iif($hget(chess.info,clr_own) == w,8,4)
 
    var %x3 = $iif($hget(chess.info,clr_own) == w,6,2)
 
    var %x4 = $iif($hget(chess.info,clr_own) == w,7,3)
 
 
    draw_selection %x1 %f.y light_blue
 
    draw_selection %x2 %f.y light_blue
 
    draw_selection %x3 %f.y yellow
 
    draw_selection %x4 %f.y yellow
 
    hadd chess.info log_select $+(%f.y,%x1) $+(%f.y,%x2) $+(%f.y,%x3) $+(%f.y,%x4)
 
  }
 
  elseif ($gettok(%log_line,2,32) == 0-0-0) {
 
    var %f.y = $iif($gettok(%log_line,1,32) == light_blue,8,1)
 
 
    if ($hget(chess.info,clr_own) == w) {
 
      var %f.y = $calc(9 - %f.y)
 
    }
 
 
    var %x1 = $iif($hget(chess.info,clr_own) == w,5,4)
 
    var %x2 = $iif($hget(chess.info,clr_own) == w,1,8)
 
    var %x3 = $iif($hget(chess.info,clr_own) == w,3,5)
 
    var %x4 = $iif($hget(chess.info,clr_own) == w,4,6)
 
 
    draw_selection %x1 %f.y light_blue
 
    draw_selection %x2 %f.y light_blue
 
    draw_selection %x3 %f.y yellow
 
    draw_selection %x4 %f.y yellow
 
    hadd chess.info log_select $+(%f.y,%x1) $+(%f.y,%x2) $+(%f.y,%x3) $+(%f.y,%x4)
 
  }
 
  else {
 
    if ($hget(chess.options,log_format) == 1) {
 
      var %move = $gettok(%log_line,2,32)
 
      var %from = $replace($mid(%move,2,2),a,1,b,2,c,3,d,4,e,5,f,6,g,7,h,8)
 
      var %to = $replace($mid(%move,5,2),a,1,b,2,c,3,d,4,e,5,f,6,g,7,h,8)
 
    }
 
    else {
 
      var %move = $gettok(%log_line,3,32)
 
      var %from = $replace($mid(%move,1,2),a,1,b,2,c,3,d,4,e,5,f,6,g,7,h,8)
 
      var %to = $replace($mid(%move,5,2),a,1,b,2,c,3,d,4,e,5,f,6,g,7,h,8)
 
    }
 
    var %from.x = $mid(%from,1,1)
 
    var %from.y = $mid(%from,2,1)
 
    var %to.x = $mid(%to,1,1)
 
    var %to.y = $mid(%to,2,1)
 
 
    if ($hget(chess.info,clr_own) == w) {
 
      var %from.y = $calc(9 - %from.y)
 
      var %to.y = $calc(9 - %to.y)
 
    }
 
    else {
 
      var %from.x = $calc(9 - %from.x)
 
      var %to.x = $calc(9 - %to.x)
 
    }
 
 
    draw_selection %from.x %from.y light_blue
 
    draw_selection %to.x %to.y yellow
 
    hadd chess.info log_select $+(%from.y,%from.x) $+(%to.y,%to.x) 
 
  }
 
}
 
 
alias -l chess_sclick {
 
  if ($hget(chess.info,log_select)) { clear_selections $v1 | hdel chess.info log_select }
 
 
  if (!$hget(chess.info,init)) {
 
 
    ; SELECT: single player
 
    if ($inrect($mouse.x,$mouse.y,60,$iif($hget(chess.options,size) == 100,320,140),300,50)) {
 
      hadd chess.info init 1 | hadd chess.info clr_own w | hadd chess.info mode sp
 
      chess_initiate
 
    } 
 
    ; SELECT: connect to a server
 
    elseif ($inrect($mouse.x,$mouse.y,60,$iif($hget(chess.options,size) == 100,380,200),300,50)) {
 
      connect_dialog
 
    }
 
    ; SELECT: start a server
 
    elseif ($inrect($mouse.x,$mouse.y,60,$iif($hget(chess.options,size) == 100,440,260),300,50)) {
 
      server_dialog
 
    }
 
    ; SELECT: help
 
    elseif ($inrect($mouse.x,$mouse.y,60,$iif($hget(chess.options,size) == 100,500,310),300,50)) {
 
      url -n http://wiki.prco23.org/index.php/Chess_game#Help
 
    }
 
    return
 
  }
 
  ; OPEN: log-window
 
  elseif ($inrect($mouse.x,$mouse.y,$iif($hget(chess.options,size) == 100,700,380),$iif($hget(chess.options,size) == 100,820,510),125,40)) {
 
    if ($hget(chess.info,log_show)) { hdel chess.info log_show | log_show $iif(($hget(chess.options,log_format) == 1),-120,-220) }
 
    else { hadd chess.info log_show 1 | log_show $iif(($hget(chess.options,log_format) == 1),+120,+220) }
 
 
    if (!$hget(chess.info,log_shown)) {
 
      hadd chess.info log_shown 1
 
      if ($exists(chess/temp.log)) { filter -fk chess/temp.log filter_log * }
 
    }
 
  }
 
 
  if ($hget(chess.info,mode) == mp) && (!$hget(chess.info,own_turn)) { return }
 
  if ($hget(chess.info,mode) == sp) { var %clr_own = $iif($hget(chess.info,last_moved) == w,b,w) | hadd chess.info clr_own %clr_own }
 
  else { var %clr_own = $hget(chess.info,clr_own) }
 
 
  var %x = $iif($hget(chess.options,size) == 100,$left($calc($mouse.x -20+100),1),$left($calc(((($mouse.x -20) /60) * 100) +100),1))
 
  var %y = $iif($hget(chess.options,size) == 100,$left($calc($mouse.y -20+100),1),$left($calc(((($mouse.y -20) /60) * 100) +100),1))
 
 
  var %xy = $+(%y,%x)
 
  var %clr_selected = $left($hget(chess.board,%xy),1)
 
  var %clr_moved = $hget(chess.info,clr_moved)
 
 
  var %last.x = $hget(chess.info,last.x)
 
  var %last.y = $hget(chess.info,last.y)
 
  var %last.xy = $+(%last.y,%last.x)
 
  var %y-1 = $iif($hget(chess.info,clr_own) == w,$fw(%y,1,%clr_moved),$bw(%y,1,%clr_moved))
 
  var %xy-1 = $+(%y-1,%x)
 
 
  var %y2 = $calc(9 - %y)
 
  var %x2 = $calc(9 - %x)
 
  var %xy2 = $+(%y2,%x2)
 
  var %last.x2 = $calc(9 - $hget(chess.info,last.x))
 
  var %last.y2 = $calc(9 - $hget(chess.info,last.y))
 
  var %last.xy2 = $+(%last.y2,%last.x2)
 
 
  var %is_last = $iif((%x == %last.x) && (%y == %last.y),$true,$false)
 
  var %current_selections = $hget(chess.info,current_selections)
 
  var %selected = $hget(chess.info,selected)
 
 
 
  if (!%selected) && (%clr_selected != %clr_own) && ($hget(chess.board,%xy)) { return }
 
  elseif (%selected) && (%clr_selected == %clr_own) {
 
    clear_selections %last.xy %current_selections | hdel chess.info selected | hdel chess.info current_selections
 
    if (%is_last) { hdel chess.info castling | return }
 
    if ($hget(chess.info,castling)) { chess_castling %last.xy %xy $hget(chess.info,clr_own) | return }
 
    hdel chess.info castling
 
  }
 
  elseif (!$hget(chess.board,%xy) && !$hget(chess.info,selected)) { return }
 
  elseif (!$istok(%current_selections,%xy,32)) && (%current_selections) { return }
 
 
  ; a piece is selected, and moveable
 
  if ($hget(chess.info,selected)) {
 
    hadd chess.info last_moved %clr_own
 
 
    if ($hget(chess.info,en_passant) == %xy-1) && ($left($hget(chess.board,%xy-1),1) != %clr_own) {
 
      hadd chess.info log_ep 1
 
      hdel chess.board %xy-1
 
      drawrect -rf @chess $get_color(%x,%y-1) 0 $get_square(%x) $get_square(%y-1) $hget(chess.options,size) $hget(chess.options,size)
 
    }
 
    hdel chess.info en_passant
 
    hdel chess.info check
 
 
    drawrect -rf @chess $get_color(%last.x,%last.y) 0 $get_square(%last.x) $get_square(%last.y) $hget(chess.options,size) $hget(chess.options,size)
 
    if ($hget(chess.board,%last.xy)) { draw_piece $get_square(%x) $get_square(%y) $v1 $get_color(%x,%y) }
 
    if ($hget(chess.board,%xy)) { hadd chess.info take $v1 }
 
    noop $chess_move(%last.xy,->,%xy)
 
    clear_selections %current_selections %last.xy
 
    hdel chess.info selected
 
    hdel chess.info current_selections
 
 
    if ($hget(chess.info,mode) == mp) && (!$hget(chess.info,king_in_danger)) {
 
      if (!$hget(chess.info,just_switched)) { chess_send move %last.xy2 %xy2 }
 
      print_info light_blue $hget(chess.info,opponent) $+ 's turn
 
      hdel chess.info own_turn
 
    }
 
    hdel chess.info just_switched 
 
    hdel chess.info king_in_danger
 
  }
 
 
  ; nothing selected, so we're selecting a piece
 
  else {
 
    var %piece = $hget(chess.board,%xy)
 
    draw_selection %x %y green
 
    hadd chess.info selected 1
 
    chess_piece_options %piece %x %y
 
  }
 
 
  hadd chess.info clr_moved %clr_selected
 
  hadd chess.info last.x %x
 
  hadd chess.info last.y %y
 
}
 
 
alias -l draw_piece {
 
  var %y = $calc((($replace($left($3,1),w,1,b,3) + $iif($4 == 10407679,0,1)) *100) -100)
 
  var %x = $calc($replace($right($3,-2),pawn,0,rook,1,knight,2,bishop,3,queen,4,king,5) *100)
 
  drawpic -cms @chess $1 $2 $hget(chess.options,size) $hget(chess.options,size) %x %y 100 100 chess/pieces.png
 
}
 
 
alias -l draw_selection {
 
  if ($3 == red) && (!$hget(chess.options,frames)) { return }
 
  drawrect -r @chess $clr_replace($3) 3 $calc($get_square($1) +1) $calc($get_square($2) +1) $calc($hget(chess.options,size) -2) $calc($hget(chess.options,size) -2)
 
}
 
 
alias -l chess_move {
 
  var %piece = $hget(chess.board,$1)
 
  var %move_len = $abs($calc($left($3,1) - $left($1,1)))
 
 
  if ($right(%piece,-2) == pawn) {
 
    var %l.x = $mid($3,2,1)
 
    var %l.y = $mid($3,1,1)
 
    var %l.y-1 = $calc(%l.y -1)
 
    var %l.xy-1 = $+(%l.y-1,%l.x)
 
 
    if ($istok(1 8,$left($3,1),32)) {
 
      var %l.x2 = $calc(9 - $mid($1,2,1))
 
      var %l.y2 = $calc(9 - $mid($1,1,1))
 
      var %l.xy2 = $+(%l.y2,%l.x2)
 
 
      var %n.x2 = $calc(9 - $mid($3,2,1))
 
      var %n.y2 = $calc(9 - $mid($3,1,1))
 
      var %n.xy2 = $+(%n.y2,%n.x2)
 
 
      noop $dialog(choose_piece,choose_piece)
 
      if ($hget(chess.info,mode) == mp) { chess_send switch %newpiece %n.xy2 %l.xy2 }
 
      switch_piece %newpiece $3 $1 
 
      hadd chess.info just_switched 1
 
 
      return
 
    }
 
    elseif (%move_len == 2) { hadd chess.info en_passant $3 }
 
 
    if ($hget(chess.info,opponent_move)) && ($hget(chess.info,en_passant) == %l.xy-1) {
 
      hadd chess.info log_ep 1
 
      hdel chess.board %l.xy-1
 
      drawrect -rf @chess $get_color(%l.x,%l.y-1) 0 $get_square(%l.x) $get_square(%l.y-1) $hget(chess.options,size) $hget(chess.options,size)
 
    }
 
 
  }
 
  elseif (%piece == $+($hget(chess.info,clr_own),_king)) {
 
    hadd chess.info $+($1,_king_moved) 1
 
  }
 
  elseif (%piece == $+($hget(chess.info,clr_own),rook)) && ($1 == 81) {
 
    hadd chess.info left_rook_moved 1
 
  }
 
  elseif (%piece == $+($hget(chess.info,clr_own),rook)) && ($1 == 88) {
 
    hadd chess.info right_rook_moved 1
 
  }
 
  hadd chess.board $3 %piece
 
  hdel chess.board $1
 
 
  hadd chess.info king_check 1
 
  hadd chess.info king_check2 1
 
  chess_piece_options %piece $mid($3,2,1) $mid($3,1,1)
 
 
  if ($hget(chess.info,opponent_move)) {
 
    if ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($hget(chess.info,clr_own),_king),1).data,32)) {
 
      print_info red Check
 
      hadd chess.info check 1
 
      chess_log $replacex($hget(chess.info,clr_own),b,w,w,b) $1 $3 $right(%piece,-2) $+(+,$iif($hget(chess.info,take),x))
 
    }
 
    else { chess_log $replacex($hget(chess.info,clr_own),b,w,w,b) $1 $3 $right(%piece,-2) $iif($hget(chess.info,take),x) }
 
  }
 
  elseif (!$hget(chess.info,opponent_move)) {
 
    if ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($iif($hget(chess.info,clr_own) == w,b,w),_king),1).data,32)) {
 
      var %checked 1     
 
      chess_log $hget(chess.info,clr_own) $1 $3 $right(%piece,-2) $+(+,$iif($hget(chess.info,take),x))
 
    }
 
 
    hdel chess.info threat_zone
 
    var %n = 1
 
    hadd chess.info king_check 1
 
    while ($hfind(chess.board,$+($iif($hget(chess.info,clr_own) == w,b,w),_,*),%n,w).data) {
 
      var %s = $v1
 
      if ($right($hget(chess.board,%s),-2) != king) { chess_piece_options_rec $hget(chess.board,%s) $mid(%s,2,1) $mid(%s,1,1) }
 
      inc %n
 
    }
 
 
    if ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($hget(chess.info,clr_own),_king),1).data,32)) {
 
      hadd chess.info king_in_danger 1
 
    }
 
    elseif (!$hget(chess.info,just_switched)) && (!%checked) { chess_log $hget(chess.info,clr_own) $1 $3 $right(%piece,-2) $iif($hget(chess.info,take),x) }
 
 
  }
 
 
  if ($hget(chess.info,king_in_danger)) {
 
    print_info red Illegal move! king would be threated.
 
    hadd chess.board $1 %piece
 
    if ($hget(chess.info,take)) { hadd chess.board $3 $v1 }
 
    else { hdel chess.board $3 }
 
  }
 
  else {
 
    hdel chess.info just_switched
 
    hdel chess.info take
 
    hdel chess.info log_ep
 
    hdel chess.info opponent_move
 
  }
 
  hdel chess.info threat_zone
 
  hdel chess.info king_check
 
  hdel chess.info king_check2
 
 
  return
 
}
 
 
alias -l switch_piece {
 
  var %x = $mid($2,1,1)
 
  var %y = $mid($2,2,1)
 
  var %dx = $get_square(%x)
 
  var %dy = $get_square(%y)
 
  var %piece = $hget(chess.board,$3)
 
 
  var %new_piece = $1
 
  hadd chess.board $2 %new_piece
 
  hdel chess.board $3
 
 
  draw_piece %dy %dx %new_piece $get_color(%x,%y)
 
 
  hadd chess.info king_check 1
 
  hadd chess.info king_check2 1
 
  chess_piece_options %new_piece %y %x
 
 
  if ($hget(chess.info,opponent_move)) {
 
    if ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($hget(chess.info,clr_own),_king),1).data,32)) {
 
      print_info red Check
 
      chess_log $replacex($hget(chess.info,clr_own),b,w,w,b) $3 $2 $right(%piece,-2) $+(s,+,$replace($hget(chess.info,take),1,x)) $right(%new_piece,-2)
 
    }
 
    else { chess_log $replacex($hget(chess.info,clr_own),b,w,w,b) $3 $2 $right(%piece,-2) $+(s,$replace($hget(chess.info,take),1,x)) $right(%new_piece,-2) }
 
  }
 
  elseif ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($iif($hget(chess.info,clr_own) == w,b,w),_king),1).data,32)) { 
 
    chess_log $hget(chess.info,clr_own) $1 $3 $right(%piece,-2) $+(s,+,$replace($hget(chess.info,take),1,x)) $right(%new_piece,-2)
 
  }
 
  else { chess_log $hget(chess.info,clr_own) $3 $2 $right(%piece,-2) $+(s,$replace($hget(chess.info,take),1,x)) $right(%new_piece,-2) }
 
 
  unset %newpiece
 
 
  hdel chess.info just_switched
 
  hdel chess.info take
 
  hdel chess.info log_ep
 
  hdel chess.info opponent_move
 
  hdel chess.info threat_zone
 
  hdel chess.info king_check
 
  hdel chess.info king_check2
 
}
 
 
alias -l chess_castling {
 
  var %x.king = $mid($1,2,1)
 
  var %y.king = $mid($1,1,1)
 
  var %x.rook = $mid($2,2,1)
 
  var %y.rook = $mid($2,1,1)
 
 
  var %xy.king = $+(%y.king,%x.king)
 
  var %xy.rook = $+(%y.rook,%x.rook)
 
  var %king = $+($3,_king)
 
  var %rook = $+($3,_rook)
 
 
 
  var %l.x2 = $calc(9 - $mid($1,2,1))
 
  var %l.y2 = $calc(9 - $mid($1,1,1))
 
  var %l.xy2 = $+(%l.y2,%l.x2)
 
 
  var %n.x2 = $calc(9 - $mid($2,2,1))
 
  var %n.y2 = $calc(9 - $mid($2,1,1))
 
  var %n.xy2 = $+(%n.y2,%n.x2)
 
 
  if ($3 == $hget(chess.info,clr_own)) {
 
    hadd chess.info king_moved 1
 
    hadd chess.info $+($iif(%x.rook == 8,right,left),_rook_moved) 1
 
  }
 
 
  if (%x.rook == 8) {
 
    var %x+1.king = $calc(%x.king +2)
 
    var %xy+1.king = $+(%y.king,%x+1.king)
 
    var %x-1.king = $calc(%x.king +1)
 
    var %xy-1.king = $+(%y.king,%x-1.king)
 
    var %castling = $iif($hget(chess.info,clr_own) == w,0-0,0-0-0)
 
  }
 
  else {
 
    var %x+1.king = $calc(%x.king -2)
 
    var %xy+1.king = $+(%y.king,%x+1.king)
 
    var %x-1.king = $calc(%x.king -1)
 
    var %xy-1.king = $+(%y.king,%x-1.king)
 
    var %castling = $iif($hget(chess.info,clr_own) == w,0-0-0,0-0)
 
  }
 
 
  if ($hget(chess.info,clr_own) == w) {
 
    ;draw_piece $get_square(%x+1.king) $get_square(%y.king) %king $get_color(%x+1.king,%y.king)
 
    ;draw_piece $get_square(%x-1.king) $get_square(%y.king) %rook $get_color(%x-1.king,%y.king)
 
  }
 
 
  draw_piece $get_square(%x+1.king) $get_square(%y.king) %king $get_color(%x+1.king,%y.king)
 
  draw_piece $get_square(%x-1.king) $get_square(%y.king) %rook $get_color(%x-1.king,%y.king)
 
 
  drawrect -rf @chess $get_color(%x.rook,%y.rook) 0 $get_square(%x.rook) $get_square(%y.rook) $hget(chess.options,size) $hget(chess.options,size)
 
  drawrect -rf @chess $get_color(%x.king,%y.king) 0 $get_square(%x.king) $get_square(%y.king) $hget(chess.options,size) $hget(chess.options,size)
 
 
  hadd chess.board %xy+1.king %king
 
  hadd chess.board %xy-1.king %rook
 
  hdel chess.board %xy.rook
 
  hdel chess.board %xy.king
 
 
  if ($hget(chess.info,mode) == mp) && (!$4) {
 
    chess_send castling %l.xy2 %n.xy2 $3
 
    print_info light_blue $hget(chess.info,opponent) $+ 's turn
 
  }
 
 
  hadd chess.info king_check 1
 
  hadd chess.info king_check2 1
 
 
  var %piece = %rook
 
  chess_piece_options %piece %x-1.king %y.king
 
 
  if ($hget(chess.info,opponent_move)) {
 
    if ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($hget(chess.info,clr_own),_king),1).data,32)) {
 
      print_info red Check | chess_log $replacex($hget(chess.info,clr_own),b,w,w,b) %castling +
 
    }
 
    else { chess_log $replacex($hget(chess.info,clr_own),b,w,w,b) %castling }
 
  }
 
  elseif ($istok($hget(chess.info,threat_zone),$hfind(chess.board,$+($iif($hget(chess.info,clr_own) == w,b,w),_king),1).data,32)) { 
 
    chess_log $hget(chess.info,clr_own) %castling +
 
  }
 
  else { chess_log $hget(chess.info,clr_own) %castling }
 
 
  hdel chess.info just_switched
 
  hdel chess.info take
 
  hdel chess.info log_ep
 
  hdel chess.info opponent_move
 
  hdel chess.info threat_zone
 
  hdel chess.info king_check
 
  hdel chess.info king_check2
 
  hdel chess.info own_turn
 
  hdel chess.info castling
 
}
 
 
alias -l clr_replace {
 
  return $replacex($1,red,255,green,65280,blue,16732457,yellow,2751743,light_blue,16749691,white,16777215)
 
}
 
 
alias -l get_color {
 
  ;return $iif($calc(($1 -($2 % 2)) % 2),0,16777215)
 
  return $iif($calc(($1 -($2 % 2)) % 2),4688849,10407679)
 
  ; 10407679
 
}
 
 
alias get_piece {
 
  if ($istok(1 2 7 8,$1,32)) {
 
    var %c = $hget(chess.info,clr_own)
 
    if ($1 == 2) { return $+($iif(%c == w,b,w),_pawn) }
 
    elseif ($1 == 7) { return $+(%c,_pawn) }
 
    elseif ($1 == 8) { return $+(%c,$gettok(_rook _knight _bishop $iif(%c == w,_queen _king,_king _queen) _bishop _knight _rook,$2,32)) }
 
    else { return $+($iif(%c == w,b,w),$gettok(_rook _knight _bishop $iif(%c == w,_queen _king,_king _queen) _bishop _knight _rook,$2,32)) }
 
  }
 
}
 
 
alias -l get_square {
 
  return $calc((($1 -1) * $hget(chess.options,size)) +20)
 
}
 
 
alias -l clear_selections {
 
  var %z = 1
 
  while ($gettok($1-,%z,32)) {
 
    var %x = $mid($v1,2,1)
 
    var %y = $mid($v1,1,1)
 
    var %ispiece = $hget(chess.board,$v1)
 
    if ($v1 != 99) {
 
      drawrect -rf @chess $get_color(%x,%y) 0 $get_square(%x) $get_square(%y) $hget(chess.options,size) $hget(chess.options,size)
 
      if (%ispiece) { draw_piece $get_square(%x) $get_square(%y) $v1 $get_color(%x,%y) }
 
    }
 
    inc %z
 
  }
 
}
 
 
alias -l print_info {
 
  drawrect -rf @chess 3684408 0 20 $iif($hget(chess.options,size) == 100,825,505) $iif($hget(chess.options,size) == 100,570,420) 20 | drawtext -cro @chess $clr_replace($1) "courier new" $iif($hget(chess.options,size) == 100,16,12) 20 $iif($hget(chess.options,size) == 100,825,505) $iif($hget(chess.options,size) == 100,570,420) 20 $2-
 
}
 
 
alias -l check_square {
 
  var %hg = $hget(chess.board,$+($2,$1))
 
  var %c = $iif($hget(chess.info,clr_own) == w,b,w)
 
  if ($hget(chess.info,king_check)) { var %c = $iif(%c == w,b,w) }
 
  if ($3) { var %c = $3 }
 
  if (!%hg) || ($left(%hg,1) == %c) {
 
    return $true
 
  }
 
}
 
 
alias -l in_board {
 
  if ($1 isnum 1-8) && ($2 isnum 1-8) { return $true }
 
}
 
 
alias -l draw+select {
 
  if (!$hget(chess.info,king_check)) { draw_selection $1 $2 $hget(chess.info,clr_select) }
 
  return $+($2,$1)
 
}
 
 
alias -l chess_piece_options_rec {
 
  chess_piece_options $1-
 
}
 
 
alias -l fw { return $calc($1 $iif($3 == w,+,-) $2) }
 
alias -l bw { return $calc($1 $iif($3 == w,-,+) $2) }
 
 
alias -l chess_piece_options {
 
  var %king_check = $hget(chess.info,king_check)
 
  var %king_check2 = $hget(chess.info,king_check2)
 
 
  var %piece = $right($1,-2)
 
  var %clr_own = $left($1,1)
 
 
  if (!%king_check) {
 
    var %clr_own = $iif(%clr_own == w,w,b)
 
    var %clr_opponent = $iif(%clr_own == w,b,w)
 
  }
 
 
  var %clr_opponent = $iif(%clr_own == w,b,w)
 
 
  var %x = $2
 
  var %y = $3
 
 
  ; PAWN
 
  if (%piece == pawn) {
 
 
    var %y+1 = $iif(%clr_own == w,$bw(%y,1,%clr_own),$fw(%y,1,%clr_own))
 
    var %y-1 = $iif(%clr_own == w,$fw(%y,1,%clr_own),$bw(%y,1,%clr_own))
 
    var %y+2 = $iif(%clr_own == w,$bw(%y,2,%clr_own),$fw(%y,2,%clr_own))
 
    var %x+1 = $calc(%x +1)
 
    var %x-1 = $calc(%x -1)
 
 
    var %take_left = $+(%y+1,%x+1)
 
    var %take_right = $+(%y+1,%x-1)
 
 
    if (($left($hget(chess.board,%take_left),1) == %clr_opponent) || (($hget(chess.info,en_passant) == $+(%y,%x+1)) && ($left($hget(chess.board,$+(%y,%x+1)),1) == %clr_opponent))) {   
 
      if (!%king_check) { var %select = %select $draw+select(%x+1,%y+1,%x) }
 
    }
 
    if (%king_check) { var %select = %select $draw+select(%x+1,%y-1) }
 
 
    if (($left($hget(chess.board,%take_right),1) == %clr_opponent) || (($hget(chess.info,en_passant) == $+(%y,%x-1)) && ($left($hget(chess.board,$+(%y,%x-1)),1) == %clr_opponent))) {
 
      if (!%king_check) { var %select = %select $draw+select(%x-1,%y+1) }
 
    }
 
    if (%king_check) { var %select = %select $draw+select(%x-1,%y-1) }
 
 
    echo -sg moi: %king_check - %select
 
 
    if (!$hget(chess.board,$+(%y+1,%x))) && (%y+1 <= 8) && (%y+1 >= 1) && (!%king_check) {
 
      var %select = %select $draw+select(%x,%y+1)
 
 
      ; 2 steps for first move
 
      if ($istok(2 7,%y,32)) && (!$hget(chess.board,$+(%y+2,%x))) && (%y+2 <= 8) && (%y+2 > 1) { var %select = %select $draw+select(%x,%y+2) }
 
    }
 
    if (!%king_check) { hadd chess.info current_selections $iif(%select,$v1,99) }
 
    else { $hget(chess.info,threat_zone) | hadd chess.info threat_zone $hget(chess.info,threat_zone) %select }
 
    return
 
  }
 
 
  ; ROOK
 
  elseif (%piece == rook) {
 
 
    ; :: RIGHT
 
    var %z = $iif(%x == 8,9,$calc(%x +1))
 
    while (%z <= 8) { if ($kc(%y,%z)) { break } | var %select = %select $draw+select(%z,%y) | inc %z }
 
    if ($left($hget(chess.board,$+(%y,%z)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%z,%y) }
 
 
    ; :: LEFT
 
    var %z = $iif(%x == 1,0,$calc(%x -1))
 
    while (%z >= 1) { if ($kc(%y,%z)) { break } | var %select = %select $draw+select(%z,%y) | dec %z }
 
    if ($left($hget(chess.board,$+(%y,%z)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%z,%y) }
 
 
    ; :: UP
 
    var %z = $iif(%y == 1,0,$calc(%y -1))
 
    while (%z >= 1) { if ($kc(%z,%x)) { break } | var %select = %select $draw+select(%x,%z) | dec %z }
 
    if ($left($hget(chess.board,$+(%z,%x)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%x,%z) }
 
 
    ; :: DOWN
 
    var %z = $iif(%y == 8,9,$calc(%y +1))
 
    while (%z <= 8) { if ($kc(%z,%x)) { break } | var %select = %select $draw+select(%x,%z) | inc %z }
 
    if ($left($hget(chess.board,$+(%z,%x)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%x,%z) }
 
 
    if (!%king_check) { hadd chess.info current_selections $iif(%select,$v1,99) }
 
    else { hadd chess.info threat_zone $hget(chess.info,threat_zone) %select }
 
    return
 
  }
 
 
  ; BISHOP
 
  elseif (%piece == bishop) {
 
 
    ; :: LEFT-UP
 
    var %sx = $iif(%x == 1,0,$calc(%x -1))
 
    var %sy = $iif(%y == 1,0,$calc(%y -1))
 
    while (%sx >= 1) && (%sy >= 1) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | dec %sx | dec %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    ; :: LEFT-DOWN
 
    var %sx = $iif(%x == 1,0,$calc(%x -1))
 
    var %sy = $iif(%y == 8,9,$calc(%y +1))
 
    while (%sx >= 1) && (%sy <= 8) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | dec %sx | inc %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    ; :: RIGHT-UP
 
    var %sx = $iif(%x == 8,9,$calc(%x +1))
 
    var %sy = $iif(%y == 1,0,$calc(%y -1))
 
    while (%sx <= 8) && (%sy >= 1) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | inc %sx | dec %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    ; :: RIGHT-DOWN
 
    var %sx = $iif(%x == 8,9,$calc(%x +1))
 
    var %sy = $iif(%y == 8,9,$calc(%y +1))
 
    while (%sx <= 8) && (%sy <= 8) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | inc %sx | inc %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    if (!%king_check) { hadd chess.info current_selections $iif(%select,$v1,99) }
 
    else { hadd chess.info threat_zone $hget(chess.info,threat_zone) %select }
 
    return
 
  }
 
 
  ; QUEEN
 
  elseif (%piece == queen) {
 
 
    ; :: RIGHT
 
    var %z = $iif(%x == 8,9,$calc(%x +1))
 
    while (%z <= 8) { if ($kc(%y,%z)) { break } | var %select = %select $draw+select(%z,%y) | inc %z } 
 
    if ($left($hget(chess.board,$+(%y,%z)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%z,%y) }
 
 
    ; :: LEFT
 
    var %z = $iif(%x == 1,0,$calc(%x -1))
 
    while (%z >= 1) { if ($kc(%y,%z)) { break } | var %select = %select $draw+select(%z,%y) | dec %z }   
 
    if ($left($hget(chess.board,$+(%y,%z)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%z,%y) }
 
 
    ; :: UP
 
    var %z = $iif(%y == 1,0,$calc(%y -1))
 
    while (%z >= 1) { if ($kc(%z,%x)) { break } | var %select = %select $draw+select(%x,%z) | dec %z } 
 
    if ($left($hget(chess.board,$+(%z,%x)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%x,%z) }
 
 
    ; :: DOWN
 
    var %z = $iif(%y == 8,9,$calc(%y +1))
 
    while (%z <= 8) { if ($kc(%z,%x)) { break } | var %select = %select $draw+select(%x,%z) | inc %z }
 
    if ($left($hget(chess.board,$+(%z,%x)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%x,%z) }
 
 
    ; :: LEFT-UP
 
    var %sx = $iif(%x == 1,0,$calc(%x -1))
 
    var %sy = $iif(%y == 1,0,$calc(%y -1))
 
    while (%sx >= 1) && (%sy >= 1) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | dec %sx | dec %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    ; :: LEFT-DOWN
 
    var %sx = $iif(%x == 1,0,$calc(%x -1))
 
    var %sy = $iif(%y == 8,9,$calc(%y +1))
 
    while (%sx >= 1) && (%sy <= 8) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | dec %sx | inc %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    ; :: RIGHT-UP
 
    var %sx = $iif(%x == 8,9,$calc(%x +1))
 
    var %sy = $iif(%y == 1,0,$calc(%y -1))
 
    while (%sx <= 8) && (%sy >= 1) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | inc %sx | dec %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    ; :: RIGHT-DOWN
 
    var %sx = $iif(%x == 8,9,$calc(%x +1))
 
    var %sy = $iif(%y == 8,9,$calc(%y +1))
 
    while (%sx <= 8) && (%sy <= 8) { if ($kc(%sy,%sx)) { break } | var %select = %select $draw+select(%sx,%sy) | inc %sx | inc %sy }
 
    if ($left($hget(chess.board,$+(%sy,%sx)),1) == %clr_opponent) || (%king_check) { var %select = %select $draw+select(%sx,%sy) }
 
 
    if (!%king_check) { hadd chess.info current_selections $iif(%select,$v1,99) }
 
    else { hadd chess.info threat_zone $hget(chess.info,threat_zone) %select }
 
    return
 
  }
 
 
  ; KNIGHT
 
  elseif (%piece = knight) {
 
 
    var %x+1 = $iif(%x == 8,9,$calc(%x +1))
 
    var %x-1 = $iif(%x == 1,0,$calc(%x -1))
 
    var %x+2 = $iif(%x == 8,9,$calc(%x +2))
 
    var %x-2 = $iif(%x == 1,0,$calc(%x -2))
 
    var %y+1 = $iif(%y == 8,9,$calc(%y +1))
 
    var %y-1 = $iif(%y == 1,0,$calc(%y -1))
 
    var %y+2 = $iif(%y == 8,9,$calc(%y +2))
 
    var %y-2 = $iif(%y == 1,0,$calc(%y -2))
 
 
    ; :: DOWN-2 RIGHT-1
 
    if (($check_square(%x+1,%y+2,%clr_opponent)) && ($in_board(%x+1,%y+2))) || (%king_check) { var %select = %select $draw+select(%x+1,%y+2) }
 
 
    ; :: DOWN-2 LEFT-1
 
    if (($check_square(%x-1,%y+2,%clr_opponent)) && ($in_board(%x-1,%y+2))) || (%king_check) { var %select = %select $draw+select(%x-1,%y+2) }
 
 
    ; :: DOWN-1 RIGHT-2
 
    if (($check_square(%x+2,%y+1,%clr_opponent)) && ($in_board(%x+2,%y+1))) || (%king_check) { var %select = %select $draw+select(%x+2,%y+1) }
 
 
    ; :: DOWN-1 LEFT-2
 
    if (($check_square(%x-2,%y+1,%clr_opponent)) && ($in_board(%x-2,%y+1))) || (%king_check) { var %select = %select $draw+select(%x-2,%y+1) }
 
 
    ; :: UP-2 RIGHT-1
 
    if (($check_square(%x+1,%y-2,%clr_opponent)) && ($in_board(%x+1,%y-2))) || (%king_check) { var %select = %select $draw+select(%x+1,%y-2) }
 
 
    ; :: UP-2 LEFT-1
 
    if (($check_square(%x-1,%y-2,%clr_opponent)) && ($in_board(%x-1,%y-2))) || (%king_check) { var %select = %select $draw+select(%x-1,%y-2) }
 
 
    ; :: UP-1 RIGHT-2
 
    if (($check_square(%x+2,%y-1,%clr_opponent)) && ($in_board(%x+2,%y-1))) || (%king_check) { var %select = %select $draw+select(%x+2,%y-1) }
 
 
    ; :: UP-1 LEFT-2
 
    if (($check_square(%x-2,%y-1,%clr_opponent)) && ($in_board(%x-2,%y-1))) || (%king_check) { var %select = %select $draw+select(%x-2,%y-1) }
 
 
    if (!%king_check) { hadd chess.info current_selections $iif(%select,$v1,99) }
 
    else { hadd chess.info threat_zone $hget(chess.info,threat_zone) %select }
 
    return
 
  }
 
 
  ; KING
 
  elseif (%piece == king) {
 
 
    var %x-1 = $iif(%x == 1,0,$calc(%x -1))
 
    var %y-1 = $iif(%y == 1,0,$calc(%y -1))
 
    var %x+1 = $iif(%x == 8,9,$calc(%x +1))
 
    var %y+1 = $iif(%y == 8,9,$calc(%y +1))
 
    var %xy = $+(%y,%x)
 
 
    if  (!%king_check) {
 
      var %n = 1
 
 
      hadd chess.info king_check 1
 
      while ($hfind(chess.board,$+(%clr_opponent,_,*),%n,w).data) {
 
        var %s = $v1
 
        if ($right($hget(chess.board,%s),-2) != king) { chess_piece_options_rec $hget(chess.board,%s) $mid(%s,2,1) $mid(%s,1,1) }
 
        inc %n
 
      }
 
      hdel chess.info king_check
 
    }
 
 
    ; :: RIGHT
 
    if ($check_square(%x+1,%y)) && ($in_board(%x+1,%y)) && (!$istok($hget(chess.info,threat_zone),$+(%y,%x+1),32)) {
 
      var %select = %select $draw+select(%x+1,%y)
 
    }
 
 
    ; :: LEFT
 
    if ($check_square(%x-1,%y)) && ($in_board(%x-1,%y)) && (!$istok($hget(chess.info,threat_zone),$+(%y,%x-1),32)) { var %select = %select $draw+select(%x-1,%y) }
 
 
    ; :: UP
 
    if ($check_square(%x,%y-1)) && ($in_board(%x,%y-1)) && (!$istok($hget(chess.info,threat_zone),$+(%y-1,%x),32)) { var %select = %select $draw+select(%x,%y-1) }
 
 
    ; :: DOWN
 
    if ($check_square(%x,%y+1)) && ($in_board(%x,%y+1)) && (!$istok($hget(chess.info,threat_zone),$+(%y+1,%x),32)) { var %select = %select $draw+select(%x,%y+1) }
 
 
    ; :: LEFT-UP
 
    if ($check_square(%x-1,%y-1)) && ($in_board(%x-1,%y-1)) && (!$istok($hget(chess.info,threat_zone),$+(%y-1,%x-1),32)) { var %select = %select $draw+select(%x-1,%y-1) }
 
 
    ; :: LEFT-DOWN
 
    if ($check_square(%x-1,%y+1)) && ($in_board(%x-1,%y+1)) && (!$istok($hget(chess.info,threat_zone),$+(%y+1,%x-1),32)) { var %select = %select $draw+select(%x-1,%y+1) }
 
 
    ; :: RIGHT-UP
 
    if ($check_square(%x+1,%y-1)) && ($in_board(%x+1,%y-1)) && (!$istok($hget(chess.info,threat_zone),$+(%y-1,%x+1),32)) { var %select = %select $draw+select(%x+1,%y-1) }
 
 
    ; :: RIGHT-DOWN
 
    if ($check_square(%x+1,%y+1)) && ($in_board(%x+1,%y+1)) && (!$istok($hget(chess.info,threat_zone),$+(%y+1,%x+1),32)) { var %select = %select $draw+select(%x+1,%y+1) }
 
 
    ; :: Castling
 
    if (!$hget(chess.info,king_moved)) {
 
      var %iy = 8
 
      var %lxy = $+(%iy,1)
 
      var %rxy = $+(%iy,8)
 
 
      if ($castling_left(%lxy,%iy,%clr_own)) {
 
        var %select = %select $draw+select(1,%iy)
 
        hadd chess.info castling 1
 
      }
 
      if ($castling_right(%rxy,%iy,%clr_own)) {
 
        var %select = %select $draw+select(8,%iy)
 
        hadd chess.info castling 1
 
      }     
 
    }
 
 
    hdel chess.info threat_zone
 
 
    if (!%king_check) { hadd chess.info current_selections $iif(%select,$v1,99) }
 
    else { hadd chess.info threat_zone $hget(chess.info,threat_zone) %select }
 
 
    return
 
  }
 
 
}
 
 
alias -l kc {
 
  if ($hget(chess.info,king_check)) {
 
    if ($right($hget(chess.board,$+($1,$2)),-2) != king) && ($hget(chess.board,$+($1,$2))) { return $true }
 
  }
 
  elseif ($hget(chess.board,$+($1,$2))) {
 
    return $true
 
  }
 
}
 
 
alias castling_left {
 
  if ($hget(chess.info,clr_own) == w) {
 
    if (!$hget(chess.info,left_rook_moved)) && ($left($hget(chess.board,$1),1) == $3) && (!$hget(chess.board,$+($2,2))) && (!$hget(chess.board,$+($2,3))) && (!$hget(chess.board,$+($2,4))) && (!$istok($hget(chess.info,threat_zone),$+($2,2),32)) && (!$istok($hget(chess.info,threat_zone),$+($2,3),32)) && (!$istok($hget(chess.info,threat_zone),$+($2,4),32)) && (!$hget(chess.info,check)) {
 
      return $true
 
    }
 
  }
 
  else {
 
    if (!$hget(chess.info,left_rook_moved)) && ($left($hget(chess.board,$1),1) == $3) && (!$hget(chess.board,$+($2,2))) && (!$hget(chess.board,$+($2,3))) && (!$istok($hget(chess.info,threat_zone),$+($2,2),32)) && (!$istok($hget(chess.info,threat_zone),$+($2,3),32)) && (!$hget(chess.info,check)) {
 
      return $true
 
    }
 
  }
 
}
 
 
alias castling_right {
 
  if ($hget(chess.info,clr_own) == w) {
 
    if (!$hget(chess.info,right_rook_moved)) && ($left($hget(chess.board,$1),1) == $3) && (!$hget(chess.board,$+($2,6))) && (!$hget(chess.board,$+($2,7))) && (!$istok($hget(chess.info,threat_zone),$+($2,6),32)) && (!$istok($hget(chess.info,threat_zone),$+($2,7),32)) && (!$hget(chess.info,check)) {
 
      return $true
 
    }
 
  }
 
  else {
 
    if (!$hget(chess.info,right_rook_moved)) && ($left($hget(chess.board,$1),1) == $3) && (!$hget(chess.board,$+($2,6))) && (!$hget(chess.board,$+($2,7))) && (!$istok($hget(chess.info,threat_zone),$+($2,5),32)) && (!$istok($hget(chess.info,threat_zone),$+($2,6),32)) && (!$istok($hget(chess.info,threat_zone),$+($2,7),32)) && (!$hget(chess.info,check)) {
 
      return $true
 
    }
 
  }
 
}
 
 
;; SOCKETS, msg, notice
 
 
#chess.n off
 
on ^*:notice:chess_game *:?:{
 
  if ($nick == $hget(chess.info,opponent)) { parse_incoming $2- | haltdef }
 
}
 
on ^*:text:chess_game *:?:{
 
  if ($nick == $hget(chess.info,opponent)) { parse_incoming $2- | haltdef }
 
}
 
#chess.n end
 
 
alias start_server {
 
  if ($hget(chess.info,con_type) != irc) {
 
    sockclose chess_connect
 
    socklisten chess_connect 6666
 
    hadd chess.info init 1
 
  }
 
  hadd chess.info clr_own w
 
  hadd chess.info mode mp
 
  hadd chess.info own_turn 1
 
  drawtext -ro @chess 16749691 verdana 22 60 $iif($hget(chess.options,size) == 100,560,380) waiting for other player...
 
}
 
 
alias -l connect_to_server {
 
  sockopen chess %chess.ip %chess.port
 
}
 
 
alias -l chess_send {
 
  if ($hget(chess.info,con_type) == irc) {
 
    var %m = $iif($hget(chess.options,send_method),$v1,msg)
 
    %m $hget(chess.info,opponent) chess_game $1-
 
  }
 
  else { sockwrite -n chess $1- }
 
}
 
 
on *:socklisten:chess_connect:{
 
  chess_initiate
 
  print_info light_blue You start.
 
  sockaccept chess
 
  chess_send init $me
 
}
 
 
on *:sockopen:chess:{
 
  chess_initiate
 
  chess_send init $me
 
}
 
 
on *:sockread:chess:{
 
  var %t
 
  sockread %t
 
  parse_incoming %t
 
}
 
 
on *:sockclose:chess:{
 
  print_info red $hget(chess.info,opponent) disconnected.
 
}
 
 
alias -l parse_incoming {
 
  if ($active != chess) && ($1 != cmsg) { flash @chess | titlebar @chess your turn! }
 
  tokenize 32 $1-
 
 
  if ($1 == init) {
 
    hadd chess.info opponent $2
 
    if (!$hget(chess.info,own_turn)) { print_info light_blue $2 starts. }
 
    if ($hget(chess.info,con_type) == irc) && (!$hget(chess.info,init)) {
 
      hadd chess.info init 1     
 
      chess_initiate
 
      print_info light_blue You start.
 
      chess_send init $me
 
    }
 
  }
 
  elseif ($1 == move) {
 
    hadd chess.info own_turn 1
 
    hadd chess.info opponent_move 1
 
 
    var %last.xy = $2
 
    var %last.x = $mid(%last.xy,2,1)
 
    var %last.y = $mid(%last.xy,1,1)
 
 
    var %xy = $3
 
    var %x = $mid(%xy,2,1)
 
    var %y = $mid(%xy,1,1)
 
 
    drawrect -rf @chess $get_color(%last.x,%last.y) 0 $get_square(%last.x) $get_square(%last.y) $hget(chess.options,size) $hget(chess.options,size)
 
    if ($hget(chess.board,%last.xy)) { draw_piece $get_square(%x) $get_square(%y) $v1 $get_color(%x,%y) }
 
    print_info light_blue Your turn.
 
    if ($hget(chess.board,%xy)) { hadd chess.info take 1 }
 
    noop $chess_move(%last.xy,->,%xy)
 
    draw_selection %last.x %last.y light_blue
 
    draw_selection %x %y yellow
 
    .timerclrlast $+ %xy 1 5 clear_selections %last.xy %xy
 
  }
 
  elseif ($1 == load) {
 
    print_info light_blue $hget(chess.info,opponent) loaded a game: $2 with $3
 
  }
 
  elseif ($1 == cmsg) {
 
    print_info yellow msg: $2-
 
  }
 
  elseif ($1 == disconnect) {
 
    print_info red $hget(chess.info,opponent) disconnected.
 
  }
 
  elseif ($1 == switch) {
 
    hadd chess.info opponent_move 1
 
    print_info light_blue Your turn.
 
    if ($hget(chess.board,$4)) { hadd chess.info take 1 }
 
    switch_piece $2-4
 
    clear_selections $4
 
    hadd chess.info own_turn 1
 
  }
 
  elseif ($1 == castling) {
 
    print_info light_blue Your turn.
 
    hadd chess.info opponent_move 1
 
    chess_castling $2-4 1
 
    hadd chess.info own_turn 1
 
  }
 
}
 
 
; LOGGING
 
 
 
alias -l log_show {
 
  window -C @chess $window(@chess).x $window(@chess).y $calc($window(@chess).w $1) $window(@chess).h
 
}
 
 
alias -l chess_log {
 
  if ($2 != 0-0) && ($2 != 0-0-0) {
 
    var %x.from = $mid($2,2,1)
 
    var %x.to = $mid($3,2,1)
 
    var %y.from = $mid($2,1,1)
 
    var %y.to = $mid($3,1,1)
 
 
    if ($hget(chess.info,clr_own) == w) {
 
      var %y.from = $calc(9 - %y.from)
 
      var %y.to = $calc(9 - %y.to)
 
    }
 
    else {
 
      var %x.from = $calc(9 - %x.from)
 
      var %x.to = $calc(9 - %x.to)
 
    }
 
 
    var %x.from = $gettok(a b c d e f g h,%x.from,32)
 
    var %x.to = $gettok(a b c d e f g h,%x.to,32)
 
 
    var %from = $+(%x.from,%y.from)
 
    var %to = $+(%x.to,%y.to)
 
    var %p = $replace($4,pawn,P,king,K,queen,Q,knight,N,bishop,B,rook,R)
 
    if ($hget(chess.options,log_format) == 1) { var %l = $+(%p,%from,$iif((x isin $5) || ($hget(chess.info,log_ep)),x,-),%to,$iif(s isin $5,$replace($6,pawn,P,king,K,queen,Q,knight,N,bishop,B,rook,R))) $+ $remove($5,x,s) $iif($hget(chess.info,log_ep),e.p.) }
 
    else { var %l = %p $upper(%from) $+ -> $+ $upper(%to) $iif(s isin $5,$replace($6,pawn,P,king,K,queen,Q,knight,N,bishop,B,rook,R))) $iif((x isin $5) || ($hget(chess.info,log_ep)),take) $replace($remove($5,x,s),+,check) $iif($hget(chess.info,log_ep),e.p.)  } 
 
  }
 
 
  else { var %l = $2 $+ $3 }
 
  print_last_move light_blue %l
 
  print_log $iif($1 == w,white,light_blue) %l
 
}
 
 
alias -l print_last_move {
 
  var %z = $width($2-,courier new,16)
 
  var %y = $calc($iif($hget(chess.options,size) == 100,820,500) - %z)
 
  drawrect -rf @chess 3684408 0 $iif($hget(chess.options,size) == 100,600,280) $iif($hget(chess.options,size) == 100,825,505) 225 20 | drawtext -ro @chess $clr_replace($1) "Courier New" 16 %y $iif($hget(chess.options,size) == 100,825,505) $2-
 
}
 
 
alias -l print_log {
 
  write chess\temp.log $1-
 
  if (!$hget(chess.info,log_shown)) { return }
 
  hinc chess.info log_lines
 
  var %l = $hget(chess.info,log_lines)
 
  if (%l > $iif($hget(chess.options,size) == 100,40,24)) { drawscroll @chess 0 -20 $iif($hget(chess.options,size) == 100,840,520) 20 200 $iif($hget(chess.options,size) == 100,840,520) }
 
 
  drawtext -ro @chess $clr_replace($1) "Courier New" 16 $iif($hget(chess.options,size) == 100,840,520) $calc(0+(20 * $iif(%l <= $iif($hget(chess.options,size) == 100,40,24),%l,$v2) )) $2-
 
}
 
 
alias -l filter_log {
 
  tokenize 32 $1
 
  hinc chess.info log_lines
 
  var %l = $hget(chess.info,log_lines)
 
 
  if (%l > $iif($hget(chess.options,size) == 100,40,24)) { drawscroll @chess 0 -20 $iif($hget(chess.options,size) == 100,840,520) 20 200 $iif($hget(chess.options,size) == 100,840,520) }
 
 
  drawtext -ro @chess $clr_replace($1) "Courier New" 16 $iif($hget(chess.options,size) == 100,840,520) $calc(0+(20 * $iif(%l <= $iif($hget(chess.options,size) == 100,40,24),%l,$v2) )) $2-
 
}
 
 
alias -l log_save {
 
  var %f = $+(chess/,$asctime(yyyy-mm-dd-hhnnss),-,$iif($hget(chess.info,mode) == sp,singleplayer,$hget(chess.info,opponent)),.log)
 
  filter -ff chess\temp.log %f
 
}
 
 
; DIALOGS
 
 
 
alias -l connect_dialog { noop $$dialog(chess_connect,chess_connect) }
 
 
dialog -l chess_connect {
 
  title "Create chess connection"
 
  size -1 -1 275 70
 
  option pixels
 
 
  tab "Sockets",  11, -1 -1 277 202
 
  tab "IRC", 12, -1 -1 277 202
 
 
  text "IP", 1, 7 25 100 20, tab11
 
  text "PORT", 2, 111 25 100 20, tab11
 
  edit "", 3, 5 42 100 20, tab11
 
  edit "", 4, 108 42 100 20, tab11
 
  button "connect", 5, 211 41 60 22,default
 
 
 
  text "IRC-nick to connect to", 8, 7 25 150 20, tab12
 
  edit "", 9, 5 42 100 20 , tab12
 
}
 
 
on 1:dialog:chess_connect:init:*:{
 
  did -a $dname 3 %chess.ip
 
  did -a $dname 4 $iif(%chess.port,$v1,6666)
 
}
 
 
on 1:dialog:chess_connect:sclick:5:{
 
  if ($dialog($dname).tab == 11) {
 
    set %chess.ip $did($dname,3)
 
    set %chess.port $did($dname,4)
 
    hadd chess.info init 1 | hadd chess.info clr_own b | hadd chess.info mode mp | hadd chess.info last_moved b
 
    dialog -x chess_connect
 
    connect_to_server
 
  }
 
  else {
 
    hadd chess.info init 1 | hadd chess.info clr_own b | hadd chess.info mode mp | hadd chess.info last_moved b | hadd chess.info opponent $did($dname,9)
 
    dialog -x chess_connect
 
    hadd chess.info con_type irc
 
    chess_send init $me
 
    chess_initiate
 
    .enable #chess.n
 
  }
 
}
 
 
dialog -l chess_send_pm {
 
  title "Send a message"
 
  size -1 -1 275 50
 
  option pixels
 
 
  text "", 1, 7 5 250 20,
 
  edit "", 2, 5 25 200 20,
 
  button "send" 3, 211 25 60 22,default
 
}
 
 
on 1:dialog:chess_send_pm:init:*:{
 
  did -a $dname 1 Send a message to $hget(chess.info,opponent)
 
}
 
 
on 1:dialog:chess_send_pm:sclick:3:{
 
  dialog -x chess_send_pm
 
  chess_send cmsg $did($dname,2)
 
}
 
 
dialog -l chess_getimg {
 
  title "Missing files"
 
  size -1 -1 275 70
 
  option pixels
 
 
  text "The file pieces.png doesn't seem to exist in your chess-directory, download it?", 1, 7 5 270 30,
 
  text "", 2, 7 50 250 20
 
  button "download" 3, 211 45 60 22,default
 
}
 
 
on 1:dialog:chess_getimg:sclick:3:{
 
  if (!$hget(chess.info,retry)) { getimg | did -ra $dname 2 downloading... }
 
  elseif ($hget(chess.info,retry) < 5) { getimg }
 
  else { dialog -x $dname }
 
}
 
 
alias -l server_dialog { noop $$dialog(chess_server,chess_server) }
 
 
dialog -l chess_server {
 
  title "Start a chess server"
 
  size -1 -1 275 70
 
  option pixels
 
 
  tab "Sockets",  11, -1 -1 277 202
 
  tab "IRC", 12, -1 -1 277 202
 
 
  text "Start a socket connection", 1, 7 25 200 20, tab11
 
  button "start", 2, 5 41 60 22,default tab11
 
 
  text "Wait for a connection from nick...", 3, 7 25 200 20, tab12
 
  edit "", 4, 5 42 100 20 , tab12
 
  button "start", 5, 108 41 60 22,default tab12
 
}
 
 
on 1:dialog:chess_server:init:*:{
 
  did -a $dname 4 $iif(%chess.nick,$v1)
 
}
 
 
on 1:dialog:chess_server:sclick:2:{
 
  start_server
 
  dialog -x $dname
 
}
 
 
on 1:dialog:chess_server:sclick:5:{
 
  hadd chess.info con_type irc
 
  hadd chess.info opponent $did($dname,4)
 
  .enable #chess.n
 
  start_server
 
  set %chess.nick $did($dname,4)
 
  dialog -x $dname
 
}
 
 
dialog -l choose_piece {
 
  title "Chess - choose new piece"
 
  size -1 -1 422 130
 
  option pixels
 
 
  text "Select a new piece.",5, 7 5 417 20
 
  icon 1, 5 25 100 100
 
  icon 2, 108 25 100 100
 
  icon 3, 211 25 100 100
 
  icon 4, 314 25 100 100
 
}
 
 
on 1:dialog:choose_piece:init:*:{
 
  did -g $dname 1 $+(chess/,$hget(chess.info,clr_own),_queen_w.png)
 
  did -g $dname 2 $+(chess/,$hget(chess.info,clr_own),_rook_w.png)
 
  did -g $dname 3 $+(chess/,$hget(chess.info,clr_own),_bishop_w.png)
 
  did -g $dname 4 $+(chess/,$hget(chess.info,clr_own),_knight_w.png)
 
}
 
 
 
on 1:dialog:choose_piece:sclick:1,2,3,4:{
 
  set %newpiece $+($hget(chess.info,clr_own),_,$gettok(queen rook bishop knight,$did,32))
 
  dialog -x choose_piece
 
}
 
 
dialog -l chess_options {
 
  title "Chess options"
 
  size -1 -1 400 400
 
  option pixels
 
 
  text "Logging format", 1, 7 8 100 20
 
  combo 2, 110 5 200 20,drop
 
 
  text "Square size (pixels)", 3, 7 30 100 20
 
  combo 4, 110 27 200 20,drop
 
 
  text "IRC send method", 5, 7 52 100 20
 
  combo 6, 110 49 200 20,drop
 
 
  text "Selection frames", 7, 7 74 100 20
 
  check "" 8, 110 71 20 20,
 
 
  button "save", 10, 330 370 60 22,ok
 
}
 
 
on 1:dialog:chess_options:init:*:{
 
  did -a $dname 2 International (Pe2xf1Q+)
 
  did -a $dname 2 New (P E2->F1 Q take+check)
 
  did -c $dname 2 $iif($hget(chess.options,log_format),$v1,1)
 
 
  did -a $dname 4 100
 
  did -a $dname 4 60
 
  did -c $dname 4 $iif($hget(chess.options,size) == 100,1,2)
 
 
  did -a $dname 6 msg
 
  did -a $dname 6 notice
 
  did -c $dname 6 $iif($hget(chess.options,send_method) == msg,1,2)
 
 
  if ($hget(chess.options,frames)) { did -c $dname 8 }
 
}
 
 
on 1:dialog:chess_options:sclick:10:{
 
  hadd chess.options log_format $did($dname,2).sel
 
  if ($did($dname,4).seltext != $hget(chess.options,size)) { hadd chess.options size $did($dname,4).seltext | .timerrestart 1 0 chess_restart }
 
  if ($did($dname,8).state == 1) { hadd chess.options frames 1 }
 
  else { hdel chess.options frames }
 
  hadd chess.options send_method $did($dname,6)
 
 
  hsave chess.options chess/options.hsh
 
}
 
 
; FETCH IMAGE
 
alias getimg { .remove chess/pieces.png | sockclose getimg | sockopen getimg lost.kapsi.fi 80 }
 
on *:sockopen:getimg:{
 
  sockwrite -nt getimg GET /cail/pieces.png HTTP/1.1
 
  sockwrite -nt getimg Host: lost.kapsi.fi
 
  sockwrite -nt getimg Connection: close
 
  sockwrite -nt getimg $crlf
 
}
 
on *:sockread:getimg:{
 
  if (!$sock(getimg).mark) {
 
    var %t
 
    sockread %t
 
    if ($gettok(%t,1,32) == Content-Length:) { var %content_len = $gettok(%t,2,32) }
 
  }
 
  if (!%t) { sockmark getimg $iif(%content_len,$v1,1) }
 
  if ($sock(getimg).mark) {
 
    sockread -f &img
 
    bwrite chess/pieces.png -1 &img
 
  }
 
}
 
on *:sockclose:getimg:{
 
  if ($file(chess/pieces.png) == $sock(getimg).mark) || ($sock(getimg).mark == 1) { dialog -x chess_getimg }
 
  elseif ($hget(chess.info,retry) <= 5) { hinc chess.info retry | did chess_getimg 2 Error, trying again... ( $+ $hget(chess.info,retry) $+ ) | .remove chess/pieces.png | getimg }
 
  else { did chess_getimg 2 5 retries gone, try again later }
 
  unset %content_len
 
}
 
  
 +
Download the .mrc from http://lost.kapsi.fi/cail/chess.mrc
  
 
== Help ==
 
== Help ==

Revision as of 21:18, 7 April 2007

Screenshot of the gameplay

Source

Download the .mrc from http://lost.kapsi.fi/cail/chess.mrc

Help

The game

Singleplayer mode is only for debugging and testing, not actually to play. This game is meant to be played as multiplayer, where other player starts a server (whites), and other connects to this server (blacks)

Server and connecting

Two connection types are available, sockets and through IRC with /notice or /msg Connection type must be same on both players, the one starting a server must start a server using sockets (default), or from server dialog select IRC and input the other players nick (in active server connection)

The connecting player must then select the same connection method from the connect dialog, and input the servers IP (sockets) or NICK (IRC), note that the same PORT must be used on both clients.

=== Implemented rules === (read more about the rules from wikipedia)

All the pieces move correctly, and you cannot make a move that wouldn't go by the rules. Pawn can perform en passant move, and if advanced to the 8th rank (other side of the board), it gets promoted to queen,rook,bishop,knight of the same color. King and rook can perform castling move, if all the requirements are met, selecting king will highlight the rook, if then clicked on the rook, the castling is performed. IF king is in check, the game will show the selectiong borders in squares you cannot move, but won't let you move there if you try.

Mouse & menus

You select pieces by clicking them, and move them by clicking on the target square, clicking the selected piece will de-select it. You'll find last move from bottom right hand side of the board, clicking it will append the log-window on the right side, where you will see 40 (with 100px squares) or 24 (60px squares) last moves, doubleclicking a move in the log-window will highlight the move on the board. Right clicking anywhere brings you a popup-menu, where you will always find options and help, if in game, also save & load are in this menu. If in multiplayer mode, there's also "send msg", from where you can send a message to other players infobar (bottom left hand side on the board). Right clicking on the log menu let's you save the log.

Saving & loading

You can save and load your gamestate, the game will create 2 files into your /chess-folder YYYY-MM-DD-HHNNSS_board_OPPONENTSNAME.save and YYYY-MM-DD-HHNNSS_info_OPPONENTSNAME.save There will be notification for you, if the opponent loads a game, telling you what game he/she loaded.

Options

Logging format: let's you choose the logging format between "International (Pe2xf1Q+)" and "New (P E2->F1 Q take+check)" Square size: Width & height of the squares in the board in pixels. IRC send method: Uses /msg OPPONENT or /notice OPPONENT to send information if connected via IRC. Selection frames: Switch on/off showing of the borders in squares where you can move.