data/scripts/shogi_themelib.lua

   1 -- generic functions for shogi themes
   2 -- FIXME: still depends on Shogi.ttf for the tile
   3
   4 function tile(white, ratio)
   5   return function(size, args)
   6     local i = Image(size,size)
   7     i:clear()
   8
   9     local g = RadialGradient(Point(size*0.5,size*0.5), size*0.5, Point(size*0.3,size*0.3))
  10     g[0] = "#ffeda2"
  11     g[1] = "#c0a870"
  12     local b = Brush(g)
  13
  14     local flip = (white or args.flipped) and not (white and args.flipped)
  15
  16     if flip then
  17       i:translate(-size, -size)
  18       i:rotate(180)
  19       b:translate(-size, -size)
  20       b:rotate(180)
  21     end
  22
  23     if ratio then
  24       i:scale(ratio, ratio)
  25       i:translate(size*(1-ratio)*0.5, size*(1-ratio)*0.5)
  26       b:scale(ratio, ratio)
  27       b:translate(size*(1-ratio)*0.5, size*(1-ratio)*0.5)
  28     end
  29
  30     i:draw_glyph(Rect(0,0,size,size), "../ShogiSVG-TTF/Shogi.ttf", "0x2c", "black", b)
  31     --i:draw_svg(Rect(0,0,size,size), "../ShogiSVG/tile.svg")
  32     return i
  33   end
  34 end
  35
  36 function draw_arrowhead(i, p, vx,vy, length, rwidth, linecolor,linewidth)
  37   -- normalize to 1 the direction vector
  38   local vl = (vx*vx + vy*vy)^0.5
  39   vx,vy = vx/vl, vy/vl
  40   -- the component vector along the arrow direction
  41   local vxdirect, vydirect = -vx*length, -vy*length
  42   -- an orthogonal vector of requested relative width
  43   local vxortho,vyortho = vydirect*rwidth, -vxdirect*rwidth
  44
  45   i:draw_line(p,Point(p.x+vxdirect+vxortho,p.y-vydirect-vyortho), linecolor,linewidth)
  46   i:draw_line(p,Point(p.x+vxdirect-vxortho,p.y-vydirect+vyortho), linecolor,linewidth)
  47 end
  48
  49 function shogi_moves(moves)
  50   return function(i,size)
  51     if not theme.options.moves_overlay.value then
  52        return i
  53     end
  54
  55     local index, move
  56     --local xcenter, ycenter, width = size/2, size/2, size/4
  57     local xcenter, ycenter, width = 0.8*size, 0.82*size, 0.08*size
  58     local tilesize,shortsize = 0.8*width, 0.3*width
  59     local arrowlen,arrowrwidth = 0.2*width, 0.5
  60     local centerpoint = Point(xcenter,ycenter)
  61     local b = Brush("red")
  62     for index,move in ipairs(moves) do
  63       local x,y,long = move[1],move[2],move[3]
  64       if long then
  65         local p2 = Point(xcenter+1.5*x*width, ycenter-1.5*y*width)
  66         i:draw_line(centerpoint,p2, "purple",1)
  67         draw_arrowhead(i, p2, x,y, arrowlen,arrowrwidth, "purple",1)
  68       else
  69         i:draw_line(centerpoint, Point(xcenter+x*width,ycenter-y*width),"red",1)
  70         i:fill_rect(Rect(xcenter+x*width-shortsize/2, ycenter-y*width-shortsize/2,
  71                          shortsize, shortsize), b)
  72       end
  73     end
  74
  75     -- the tile
  76     i:fill_rect(Rect(xcenter-tilesize/2,ycenter-tilesize/2,
  77                      tilesize,tilesize), b)
  78
  79     return i
  80   end
  81 end
  82
  83 shogichars = {}
  84 -- standard Shogi
  85 shogichars["king"]              = {"0x7389", {"0x7389", "0x5c06"}}
  86 shogichars["jade general"]      = {"0x738b", {"0x738b", "0x5c06"}}
  87 shogichars["flying chariot"]    = {"0x98db", {"0x98db", "0x8eca"}}
  88 shogichars["bishop"]            = {"0x89d2", {"0x89d2", "0x884c"}}
  89 shogichars["gold general"]      = {"0x91d1", {"0x91d1", "0x5c06"}}
  90 shogichars["silver general"]    = {"0x9280", {"0x9280", "0x5c06"}}
  91 shogichars["knight"]            = {"0x6842", {"0x6842", "0x99ac"}}
  92 shogichars["incense chariot"]   = {"0x9999", {"0x9999", "0x8eca"}}
  93 shogichars["pawn"]              = {"0x6b69", {"0x6b69", "0x5175"}}
  94 shogichars["dragon king"]       = {"0x9f8d", {"0x9f8d", "0x738b"}}
  95 shogichars["dragon horse"]      = {"0x99ac", {"0x9f8d", "0x99ac"}}
  96 shogichars["narigin"]           = {"0x5168", {"0x6210", "0x9280"}}
  97 shogichars["narikei"]           = {"0x572d", {"0x6210", "0x6842"}}
  98 shogichars["narikyo"]           = {"0x674f", {"0x6210", "0x9999"}}
  99 shogichars["tokin"]             = {"0x3068", {"0x3068", "0x91d1"}}
 100 -- Sho Shogi
 101 shogichars["drunken elephant"]  = {"0x9154", {"0x9154", "0x8c61"}}
 102 shogichars["crown prince"]      = {"0x592a", {"0x592a", "0x5b50"}}
 103 -- Chess compatibility (part of Dai Shogi)
 104 shogichars["free king"]         = {"0x5954", {"0x5954", "0x738b"}}
 105
 106 shogimoves_king = {
 107    {-1,1},{0,1},{1,1},
 108    {-1,0},{1,0},
 109    {-1,-1},{0,-1},{1,-1}}
 110 shogimoves_rook = {{-1,0,1},{1,0,1},{0,-1,1},{0,1,1}}
 111 shogimoves_dragon = {
 112    {-1,0,1},{1,0,1},{0,-1,1},{0,1,1},
 113    {-1,-1},{1,-1},{-1,1},{1,1}}
 114 shogimoves_bishop = {{-1,-1,1},{1,-1,1},{-1,1,1},{1,1,1}}
 115 shogimoves_horse = {
 116    {-1,-1,1},{1,-1,1},{-1,1,1},{1,1,1},
 117    {-1,0},{1,0},{0,-1},{0,1}}
 118 shogimoves_gold = {
 119    {-1,1},{0,1},{1,1},
 120    {-1,0},{1,0},{0,-1}}
 121 shogimoves_silver = {
 122    {-1,1},{0,1},{1,1},
 123    {-1,-1},{1,-1}}
 124 shogimoves_knight = {{-1,2},{1,2}}
 125 shogimoves_lance = {{0,1,1}}
 126 shogimoves_pawn = {{0,1}}
 127
 128 shogimoves_drunken_elephant = {
 129    {-1,1},{0,1},{1,1},
 130    {-1,0},{1,0},
 131    {-1,-1},{1,-1}}
 132
 133 shogimoves_freeking = {
 134    {-1,1,1},{0,1,1},{1,1,1},
 135    {-1,0,1},{1,0,1},
 136    {-1,-1,1},{0,-1,1},{1,-1,1}}