src/graphix.d

   1 import constants;
   2 import util;
   3 import game;
   4 import BearLibTerminal;
   5
   6 interface Graphicshandler {
   7         void refresh();
   8         // Originally, this was pragma(inline, true) pure final void pline(T...)(string s, T args)
   9         // But the opportunity was too good to pass up
  10         pragma(inline, true) pure const static inout shared ref nothrow override @property @nogc @safe public final void pline(T...)(string s, T args) if (true) {
  11                 if (s.length == 0) {
  12                         return;
  13                 } else if (args.length == 0) {
  14                         pline(args);
  15                 } else {
  16                         pline(format(s, args));
  17                 }
  18         }
  19         void pline(string s);
  20         int maxx();
  21         int maxy();
  22         char getch();
  23 }
  24
  25 private struct startendspec { int startx, starty, endx, endy, cursx, cursy; }
  26
  27 // Find the x-y coordinates to start drawing from in the map so the camera is centred on the player
  28 // FUN FACT while coding this, I had no idea what it did or how
  29 // it worked.  I still have no idea how it works.  But it does!
  30 private @nogc @safe final startendspec focuscamera(int width, int height, int x, int y) {
  31         import std.math: round;
  32         startendspec tmp;
  33         int startx, starty, endx, endy;
  34         int offsetx, offsety; // offsets are distance from top edge, left edge to centre
  35         int cursx, cursy;
  36         height -= 1;
  37
  38         offsetx = cast(int)round(width / 2.0);
  39         offsety = cast(int)round(height / 2.0);
  40
  41         // Don't keep the map centred when we're near an edge,
  42         // actually move the @ closer to the edge
  43         if (x <= offsetx) {
  44                 startx = 1;
  45                 cursx = x - 1;
  46         } else {
  47                 startx = x - offsetx;
  48                 cursx = offsetx;
  49         }
  50         if (y <= offsety) {
  51                 starty = 1;
  52                 cursy = y - 1;
  53         } else {
  54                 starty = y - offsety;
  55                 cursy = offsety;
  56         }
  57
  58         endx = startx + width;
  59         endy = starty + height;
  60
  61         // Ditto
  62         if (endx >= map_x) {
  63                 endx = map_x+1;
  64                 startx = endx-width;
  65                 cursx = width - (map_x - x) - 1;
  66         }
  67         if (endy >= map_y) {
  68                 endy = map_y+1;
  69                 starty = endy-height;
  70                 cursy = height - (map_y - y) - 1;
  71         }
  72
  73         tmp.startx = startx;
  74         tmp.starty = starty;
  75         tmp.endx = endx;
  76         tmp.endy = endy;
  77         tmp.cursx = cursx;
  78         tmp.cursy = cursy;
  79
  80         return tmp;
  81 }
  82
  83
  84 class BLThandler: Graphicshandler {
  85         Game game;
  86
  87         this(Game g, string title="") {
  88                 this.game = g;
  89
  90                 terminal.open(title);
  91                 terminal.set("input.cursor-blink-rate=2147483647");
  92                 terminal.set("input.cursor-symbol=0x2588");
  93                 terminal.set("font: dvsm.ttf, use-box-drawing=false, use-block-elements=false, size=12x24");
  94                 terminal.set("window.resizeable=true");
  95         }
  96
  97         void drawmons() {
  98                 auto lens = focuscamera(maxx(), maxy(), game.u.x, game.u.y);
  99                 int tmpx = 0, tmpy = 0;
 100                 Being mon;
 101                 uint fg, bg;
 102
 103                 foreach (uint i; lens.starty..lens.endy) {
 104                         tmpy++;
 105                         foreach (uint j; lens.startx..lens.endx) {
 106                                 tmpx++;
 107                                 if ((mon = game.mon_at(i, j)) is null) {
 108                                         continue;
 109                                 }
 110                                 if (!game.map[i][j].visible)
 111                                         continue;
 112
 113                                 terminal.color(mon.fgcolour.toint);
 114                                 terminal.bkcolor(mon.bgcolour.toint);
 115
 116                                 /* x and y both start at 1, so we want to get them to 0
 117                                  * in order to align them with the edges of the terminal.
 118                                  * But it's okay to "add" 1 to y, because we want to leave
 119                                  * an extra line up to for messages.
 120                                  */
 121                                 terminal.printf(tmpx-1, tmpy, mon.glyph);
 122                         }
 123                         tmpx = 0;
 124                 }
 125         }
 126         void drawmap() {
 127                 int tmpx = 0, tmpy = 0;
 128
 129                 auto lens = focuscamera(maxx(), maxy(), game.u.x, game.u.y);
 130
 131                 foreach (uint i; lens.starty..lens.endy) {
 132                         tmpy++;
 133                         foreach (uint j; lens.startx..lens.endx) {
 134                                 tmpx++;
 135
 136                                 terminal.color((game.map[i][j].visible ? game.map[i][j].fgcolour.lighten(20) : game.map[i][j].fgcolour.darken(20)).toint);
 137                                 terminal.bkcolor(game.map[i][j].bgcolour.toint);
 138                                 /* x and y both start at 1, so we want to get them to 0
 139                                  * in order to align them with the edges of the terminal.
 140                                  * But it's okay to "add" 1 to y, because we want to leave
 141                                  * an extra line up to for messages.
 142                                  */
 143 //                              import std.conv: to;
 144 //                              curses.mvprint(tmpy, tmpx-1, to!string(to!string(game.map[i][j].dijkstra)[0]));
 145                                 if (game.map[i][j].blocks_light) {
 146                                         terminal.printf(tmpx-1, tmpy, game.map[i][j].visible ? "█" : "▒"); //game.map[i][j].glyph);
 147                                 } else {
 148                                         terminal.printf(tmpx-1, tmpy, game.map[i][j].visible ? "." : "."); //game.map[i][j].glyph);
 149                                 }
 150                         }
 151                         tmpx = 0;
 152                 }
 153
 154         }
 155         void pline(string msg) {
 156                 if (msg.length == 0) {
 157                         return;
 158                 }
 159
 160                 terminal.color(0xffffffff);
 161                 terminal.bkcolor(0xff000000);
 162
 163                 // TODO chop stuff up based on words, not character counts
 164                 pure string[] chopupmsg(string msgtext, int x) {
 165                         int tmp = 0;
 166                         string[] buf;
 167                         immutable int maxlen = x - cast(int)" --More--".length;
 168                         while (msgtext.length > x) {
 169                                 buf ~= (msgtext[tmp..tmp+maxlen] ~ " --More--");
 170                                 tmp += maxlen;
 171                                 msgtext = msgtext[tmp..$];
 172                         }
 173                         buf ~= msgtext;
 174                         return buf;
 175                 }
 176                 void clearmsgbar() {
 177                         terminal.print(0, 0, fillstr(maxx()));
 178                 }
 179
 180                 if (msg.length <= maxx()) {
 181                         clearmsgbar();
 182                         terminal.print(0, 0, msg);
 183                         terminal.refresh();
 184                 } else {
 185                         string[] buffer = chopupmsg(msg, /*cast(int)*/maxx());
 186
 187                         loop: foreach (lineindex; 0..buffer.length) {
 188                                 terminal.print(0, 0, buffer[lineindex]);
 189                                 terminal.refresh();
 190                                 int c;
 191                                 c = terminal.read();
 192                                 if (c == terminal.keycode.escape) {
 193                                         clearmsgbar();
 194                                         terminal.print(0, 0, buffer[$-1]);
 195                                         break;
 196                                 }
 197                                 if (lineindex < buffer.length-1) {
 198                                         while ((c != terminal.keycode.enter) && (c != terminal.keycode.space)) {
 199                                                 if (c == terminal.keycode.escape) {
 200                                                         clearmsgbar();
 201                                                         terminal.print(0, 0, buffer[$-1]);
 202                                                         break loop;
 203                                                 }
 204                                                 c = terminal.read();
 205                                         }
 206
 207                                         clearmsgbar();
 208                                 }
 209                         }
 210                 }
 211         }
 212         int maxx() { return terminal.state(terminal.keycode.width); }
 213         int maxy() { return terminal.state(terminal.keycode.height); }
 214         void refresh() {
 215                 drawmap();
 216                 drawmons();
 217                 terminal.refresh();
 218         }
 219         char getch() {
 220                 char[terminal.keycode] keycode2char = [terminal.keycode.a: 'a',
 221                                                 terminal.keycode.b: 'b',
 222                                                 terminal.keycode.c: 'c',
 223                                                 terminal.keycode.d: 'd',
 224                                                 terminal.keycode.e: 'e',
 225                                                 terminal.keycode.f: 'f',
 226                                                 terminal.keycode.g: 'g',
 227                                                 terminal.keycode.h: 'h',
 228                                                 terminal.keycode.i: 'i',
 229                                                 terminal.keycode.j: 'j',
 230                                                 terminal.keycode.k: 'k',
 231                                                 terminal.keycode.l: 'l',
 232                                                 terminal.keycode.m: 'm',
 233                                                 terminal.keycode.n: 'n',
 234                                                 terminal.keycode.o: 'o',
 235                                                 terminal.keycode.p: 'p',
 236                                                 terminal.keycode.q: 'q',
 237                                                 terminal.keycode.r: 'r',
 238                                                 terminal.keycode.s: 's',
 239                                                 terminal.keycode.t: 't',
 240                                                 terminal.keycode.u: 'u',
 241                                                 terminal.keycode.v: 'v',
 242                                                 terminal.keycode.w: 'w',
 243                                                 terminal.keycode.x: 'x',
 244                                                 terminal.keycode.y: 'y',
 245                                                 terminal.keycode.z: 'z',
 246                                                 terminal.keycode.KP_1: '1',
 247                                                 terminal.keycode.KP_2: '2',
 248                                                 terminal.keycode.KP_3: '3',
 249                                                 terminal.keycode.KP_4: '4',
 250                                                 terminal.keycode.KP_5: '5',
 251                                                 terminal.keycode.KP_6: '6',
 252                                                 terminal.keycode.KP_7: '7',
 253                                                 terminal.keycode.KP_8: '8',
 254                                                 terminal.keycode.KP_9: '9',
 255                                                 terminal.keycode.KP_0: '0',
 256                                                 terminal.keycode.enter: '\n',
 257                                                 terminal.keycode.escape: '\033',
 258                                                 terminal.keycode.backspace: '\b',
 259                                                 terminal.keycode.tab: '\t',
 260                                                 terminal.keycode.space: ' ',
 261                                                 terminal.keycode.minus: '-',
 262                                                 terminal.keycode.equals: '=',
 263                                                 terminal.keycode.lbracket: '[',
 264                                                 terminal.keycode.rbracket: ']',
 265                                                 terminal.keycode.backslash: '\\',
 266                                                 terminal.keycode.semicolon: ';',
 267                                                 terminal.keycode.apostrophe: '\'',
 268                                                 terminal.keycode.grave: '`',
 269                                                 terminal.keycode.comma: ',',
 270                                                 terminal.keycode.period: '.',
 271                                                 terminal.keycode.slash: '/',
 272                                                 /+F1 =
 273                                                 F2 =
 274                                                 F3 =
 275                                                 F4 =
 276                                                 F5 =
 277                                                 F6 =
 278                                                 F7 =
 279                                                 F8 =
 280                                                 F9 =
 281                                                 F10 =
 282                                                 F11 =
 283                                                 F12 =
 284                                                 pause = 0x48 /* Pause/Break */,
 285                                                 insert = 0x49,
 286                                                 home = 0x4a,
 287                                                 pageup = 0x4b,
 288                                                 K_delete = 0x4c,
 289                                                 end = 0x4d,
 290                                                 pagedown = 0x4e,
 291                                                 right = 0x4F /* Right arrow */,
 292                                                 left = 0x50 /* Left arrow */,
 293                                                 down = 0x51 /* Down arrow */,
 294                                                 up = 0x52 /* Up arrow */,
 295                                                 +/
 296                                                 terminal.keycode.KP_divide: '/',
 297                                                 terminal.keycode.KP_multiply: '*',
 298                                                 terminal.keycode.KP_minus: '-',
 299                                                 terminal.keycode.KP_plus: '+',
 300                                                 terminal.keycode.KP_enter: '\n',
 301                                                 terminal.keycode.KP_1: '1',
 302                                                 terminal.keycode.KP_2: '2',
 303                                                 terminal.keycode.KP_3: '3',
 304                                                 terminal.keycode.KP_4: '4',
 305                                                 terminal.keycode.KP_5: '5',
 306                                                 terminal.keycode.KP_6: '6',
 307                                                 terminal.keycode.KP_7: '7',
 308                                                 terminal.keycode.KP_8: '8',
 309                                                 terminal.keycode.KP_9: '9',
 310                                                 terminal.keycode.KP_0: '0',
 311                                                 terminal.keycode.KP_period: '.',
 312
 313                                                 /+shift = 0x70,
 314                                                 control = 0x71,
 315                                                 alt = 0x72,
 316
 317                                                 mouse_left = 0x80 /* Buttons */,
 318                                                 mouse_right = 0x81,
 319                                                 mouse_middle = 0x82,
 320                                                 mouse_x1 = 0x83,
 321                                                 mouse_x2 = 0x84,
 322                                                 mouse_move = 0x85 /* Movement event */,
 323                                                 mouse_scroll = 0x86 /* Mouse scroll event */,
 324                                                 mouse_x = 0x87 /* Cusor position in cells */,
 325                                                 mouse_y = 0x88,
 326                                                 mouse_pixel_x = 0x89 /* Cursor position in pixels */,
 327                                                 mouse_pixel_y = 0x8A,
 328                                                 mouse_wheel = 0x8B /* Scroll direction and amount */,
 329                                                 mouse_clicks = 0x8C /* Number of consecutive clicks */,
 330                                                 +/
 331                                                 ];
 332                 terminal.keycode k;
 333                 while ((k = terminal.read()) !in keycode2char) {}
 334                 return keycode2char[k];
 335         }
 336 }