aboutsummaryrefslogblamecommitdiffstats
path: root/Game/Code/Classes/TextGL.pas
blob: 0bd61fa74289c446cb0eea9ffa2d1650525f0832 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
















































































































































































































































































































































































































































































































































































                                                                                                               
unit TextGL;

interface

{$IFDEF FPC}
  {$MODE Delphi}
{$ENDIF}

{$I switches.inc}


uses  OpenGL12,
      SDL,
      UTexture,
      Classes,
      dialogs,
      SDL_ttf,
      ULog;

procedure BuildFont;			                // Build Our Bitmap Font
procedure KillFont;     		                // Delete The Font
function  glTextWidth(text: pchar): real;     // Returns Text Width
procedure glPrintDone(text: pchar; Done: real; ColR, ColG, ColB: real);
procedure glPrintLetter(letter: char);
procedure glPrintLetterCut(letter: char; Start, Finish: real);
procedure glPrint(text: pchar);	                  // Custom GL "Print" Routine
procedure glPrintCut(text: pchar);
procedure SetFontPos(X, Y: real);                     // Sets X And Y
procedure SetFontSize(Size: real);
procedure SetFontStyle(Style: integer); // sets active font style (normal, bold, etc)
procedure SetFontItalic(Enable: boolean); // sets italic type letter (works for all fonts)
procedure SetFontAspectW(Aspect: real);

// Start of SDL_ttf
function NextPowerOfTwo(Value: Integer): Integer;
//Checks if the ttf exists, if yes then a SDL_ttf is returned
function LoadFont(FileName: PAnsiChar; PointSize: integer):PTTF_Font;

// Does the renderstuff, color is in $ffeecc style
function RenderText(font: PTTF_Font; Text:PAnsiChar; Color: Cardinal):PSDL_Surface;
procedure printrandomtext();
// End of SDL_ttf

type
  TTextGL = record
    X:        real;
    Y:        real;
    Text:     string;
    Size:     real;
    ColR:     real;
    ColG:     real;
    ColB:     real;
  end;

  TFont = record
    Tex:      TTexture;
    Width:    array[0..255] of byte;
    AspectW:  real;
    Centered: boolean;
    Done:     real;
    Outline:  real;
    Italic:   boolean;
  end;


var
  base:       GLuint;			                // Base Display List For The Font Set
  Fonts:      array of TFont;
  ActFont:    integer;
  PColR:      real;  // temps for glPrintDone
  PColG:      real;
  PColB:      real;

implementation

uses UMain,
     UCommon,
     {$IFDEF win32}
     windows,
     {$ELSE}
     lclintf,
     lcltype,
     {$ENDIF}
     SysUtils,
     {$IFDEF LAZARUS}
     LResources,
     {$ENDIF}
     {$IFDEF DARWIN}
     MacResources,
     {$ENDIF}
     UGraphic;

procedure BuildFont;			                // Build Our Bitmap Font

  procedure loadfont( aID : integer; aType, aResourceName : String);
  {$IFDEF LAZARUS}
  var
    lLazRes  : TLResource;
    lResData : TStringStream;
  begin
      try
        lLazRes := LazFindResource( aResourceName, aType );
        if lLazRes <> nil then
        begin
          lResData := TStringStream.create( lLazRes.value );
          try
            lResData.position := 0;
            lResData.Read(Fonts[ aID ].Width, 256);
          finally
            freeandnil( lResData );
          end;
        end;
      
  {$ELSE}
  var
    Rejestr:  TResourceStream;
  begin
    try
        Rejestr := TResourceStream.Create(HInstance, aResourceName , pchar( aType ) );
        try
          Rejestr.Read(Fonts[ aID ].Width, 256);
        finally
          Rejestr.Free;
        end;
  {$ENDIF}
      
    except
      Log.LogStatus( 'Could not load font : loadfont( '+ inttostr( aID ) +' , '+aType+' )' , 'ERROR');
    end;
  end;

var
  font:     HFONT;              	          // Windows Font ID
  h_dc:     hdc;
  Pet:      integer;
begin
  ActFont := 0;

  Log.LogStatus( '' , '---------------------------');

  Log.LogStatus( 'Font' , '---------------------------');
  SetLength(Fonts, 5);
  Fonts[0].Tex := Texture.LoadTexture(true, 'Font', 'PNG', 'Transparent', 0);
  Fonts[0].Tex.H := 30;
  Fonts[0].AspectW := 0.9;
  Fonts[0].Done := -1;
  Fonts[0].Outline := 0;

  Log.LogStatus( 'FontB' , '---------------------------');

  Fonts[1].Tex := Texture.LoadTexture(true, 'FontB', 'PNG', 'Transparent', 0);
  Fonts[1].Tex.H := 30;
  Fonts[1].AspectW := 1;
  Fonts[1].Done := -1;
  Fonts[1].Outline := 0;

  Log.LogStatus( 'FontO' , '---------------------------');
  Fonts[2].Tex := Texture.LoadTexture(true, 'FontO', 'PNG', 'Transparent', 0);
  Fonts[2].Tex.H := 30;
  Fonts[2].AspectW := 0.95;
  Fonts[2].Done := -1;
  Fonts[2].Outline := 5;

  Log.LogStatus( 'FontO2' , '---------------------------');
  Fonts[3].Tex := Texture.LoadTexture(true, 'FontO2', 'PNG', 'Transparent', 0);
  Fonts[3].Tex.H := 30;
  Fonts[3].AspectW := 0.95;
  Fonts[3].Done := -1;
  Fonts[3].Outline := 4;

{  Fonts[4].Tex := Texture.LoadTexture('FontO', 'BMP', 'Arrow', 0); // for score screen
  Fonts[4].Tex.H := 30;
  Fonts[4].AspectW := 0.95;
  Fonts[4].Done := -1;
  Fonts[4].Outline := 5;}



  loadfont( 0, 'FNT', 'Font'   );
  loadfont( 1, 'FNT', 'FontB'  );
  loadfont( 2, 'FNT', 'FontO'  );
  loadfont( 3, 'FNT', 'FontO2' );

{  Rejestr := TResourceStream.Create(HInstance, 'FontO', 'FNT');
  Rejestr.Read(Fonts[4].Width, 256);
  Rejestr.Free;}

  for Pet := 0 to 255 do
    Fonts[1].Width[Pet] := Fonts[1].Width[Pet] div 2;

  for Pet := 0 to 255 do
    Fonts[2].Width[Pet] := Fonts[2].Width[Pet] div 2 + 2;

  for Pet := 0 to 255 do
    Fonts[3].Width[Pet] := Fonts[3].Width[Pet] + 1;

{  for Pet := 0 to 255 do
    Fonts[4].Width[Pet] := Fonts[4].Width[Pet] div 2 + 2;}

end;

procedure KillFont;     		                // Delete The Font
begin
//  glDeleteLists(base, 256); 		                // Delete All 96 Characters
end;

function glTextWidth(text: pchar): real;
var
  Letter: char;
  i: integer;
begin
//  Log.LogStatus(Text, 'glTextWidth');
  Result := 0;
  for i := 0 to Length(text) do
  begin
    Letter := Text[i];
    // Bugfix: does not work with FPC, probably because a part of text is assigned to itself
    //text := pchar(Copy(text, 2, Length(text)-1));
    Result := Result + Fonts[ActFont].Width[Ord(Letter)] * Fonts[ActFont].Tex.H / 30 * Fonts[ActFont].AspectW;
  end;
end;

procedure glPrintDone(text: pchar; Done: real; ColR, ColG, ColB: real);
begin
  Fonts[ActFont].Done := Done;
  PColR := ColR;
  PColG := ColG;
  PColB := ColB;
  glPrintCut(text);
  Fonts[ActFont].Done := -1;
end;

procedure glPrintLetter(Letter: char);
var
  TexX, TexY:   real;
  TexR, TexB:   real;
  FWidth:       real;
  PL, PT:       real;
  PR, PB:       real;
  XItal:        real; // X shift for italic type letter
begin
  with Fonts[ActFont].Tex do
  begin
    FWidth := Fonts[ActFont].Width[Ord(Letter)];

    W := FWidth * (H/30) * Fonts[ActFont].AspectW;
  //  H := 30;

    // set texture positions
    TexX := (ord(Letter) mod 16) * 1/16 + 1/32 - FWidth/1024 - Fonts[ActFont].Outline/1024;
    TexY := (ord(Letter) div 16) * 1/16 + 2/1024; // 2/1024
    TexR := (ord(Letter) mod 16) * 1/16 + 1/32 + FWidth/1024 + Fonts[ActFont].Outline/1024;
    TexB := (1 + ord(Letter) div 16) * 1/16 - 2/1024;

    // set vector positions
    PL := X - Fonts[ActFont].Outline * (H/30) * Fonts[ActFont].AspectW /2;
    PT := Y;
    PR := PL + W + Fonts[ActFont].Outline * (H/30) * Fonts[ActFont].AspectW;
    PB := PT + H;

    if Fonts[ActFont].Italic = false then
      XItal := 0
    else
      XItal := 12;

    glEnable(GL_TEXTURE_2D);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glBindTexture(GL_TEXTURE_2D, TexNum);

    glBegin(GL_QUADS);
    try
      glTexCoord2f(TexX, TexY); glVertex2f(PL+XItal,  PT);
      glTexCoord2f(TexX, TexB); glVertex2f(PL,        PB);
      glTexCoord2f(TexR, TexB); glVertex2f(PR,        PB);
      glTexCoord2f(TexR, TexY); glVertex2f(PR+XItal,  PT);
    finally
      glEnd;
    end;

    X := X + W;
    glDisable(GL_BLEND);
    glDisable(GL_TEXTURE_2D);
  end; // with
end;

procedure glPrintLetterCut(letter: char; Start, Finish: real);
var
  TexX, TexY:   real;
  TexR, TexB:   real;
  TexTemp:      real;
  FWidth:       real;
  PL, PT:       real;
  PR, PB:       real;
  OutTemp:      real;
  XItal:        real;
begin
  with Fonts[ActFont].Tex do begin
  FWidth := Fonts[ActFont].Width[Ord(Letter)];

  W := FWidth * (H/30) * Fonts[ActFont].AspectW;
//  H := 30;
  OutTemp := Fonts[ActFont].Outline * (H/30) * Fonts[ActFont].AspectW;

  // set texture positions
  TexX := (ord(Letter) mod 16) * 1/16 + 1/32 - FWidth/1024 - Fonts[ActFont].Outline/1024;
  TexY := (ord(Letter) div 16) * 1/16 + 2/1024; // 2/1024
  TexR := (ord(Letter) mod 16) * 1/16 + 1/32 + FWidth/1024 + Fonts[ActFont].Outline/1024;
  TexB := (1 + ord(Letter) div 16) * 1/16 - 2/1024;

  TexTemp := TexX + Start * (TexR - TexX);
  TexR := TexX + Finish * (TexR - TexX);
  TexX := TexTemp;

  // set vector positions
  PL := X - OutTemp / 2 + OutTemp * Start;
  PT := Y;
  PR := PL + (W + OutTemp) * (Finish - Start);
  PB := PT + H;
  if Fonts[ActFont].Italic = false then
    XItal := 0
  else
    XItal := 12;

  glEnable(GL_TEXTURE_2D);
  glEnable(GL_BLEND);
  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
  glBindTexture(GL_TEXTURE_2D, TexNum);
  glBegin(GL_QUADS);
    glTexCoord2f(TexX, TexY); glVertex2f(PL+XItal,  PT);
    glTexCoord2f(TexX, TexB); glVertex2f(PL,        PB);
    glTexCoord2f(TexR, TexB); glVertex2f(PR,        PB);
    glTexCoord2f(TexR, TexY); glVertex2f(PR+XItal,  PT); // not tested with XItal
  glEnd;
  X := X + W * (Finish - Start);
  glDisable(GL_BLEND);
  glDisable(GL_TEXTURE_2D);
  end; // with

end;

procedure glPrint(text: pchar);	                // Custom GL "Print" Routine
var
//  Letter :       char;
  iPos   : Integer;

begin
  if (Text = '') then     // If There's No Text
    Exit;					        // Do Nothing

(*
  while (length(text) > 0) do
  begin
    // cut
    Letter := Text[0];
    Text   := pchar(Copy(Text, 2, Length(Text)-1));

    // print
    glPrintLetter(Letter);
  end; // while
*)

  // This code is better, because doing a Copy of for every
  // letter in a string is a waste of CPU & Memory resources.
  // Copy operations are quite memory intensive, and this simple
  // code achieves the same result.
  for iPos := 0 to length( text ) - 1 do
  begin
    glPrintLetter( Text[iPos] );
  end;

end;

function NextPowerOfTwo(Value: Integer): Integer;
// tyty to Asphyre
begin
 Result:= 1;
 asm
  xor ecx, ecx
  bsr ecx, Value
  inc ecx
  shl Result, cl
 end;
end;

function LoadFont(FileName: PAnsiChar; PointSize: integer):PTTF_Font;
begin
 if (FileExists(FileName)) then
   begin
     Result := TTF_OpenFont( FileName, PointSize );
   end
 else
   begin
     Log.LogStatus('ERROR Could not find font in ' + FileName , '');
     ShowMessage(  'ERROR Could not find font in ' + FileName );
   end;
end;

function RenderText(font: PTTF_Font; Text:PAnsiChar; Color: Cardinal): PSDL_Surface;
var
  clr : TSDL_color;
begin
  clr.r  := ((Color and $ff0000) shr 16  ) div 255;
  clr.g  := ((Color and $ff00  ) shr 8   ) div 255;
  clr.b  := ( Color and $ff    ) div 255 ;

  result := TTF_RenderText_Blended( font, text, cLr);
end;

procedure printrandomtext();
var
  stext,intermediary : PSDL_surface;
  clrFg, clrBG       : TSDL_color;
  texture            : Gluint;
  font               : PTTF_Font;
  w,h                : integer;
begin

font := LoadFont('fonts\comicbd.ttf', 42);

clrFg.r := 255;
clrFg.g := 255;
clrFg.b := 255;
clrFg.unused := 255;

clrBg.r := 255;
clrbg.g := 0;
clrbg.b := 255;
clrbg.unused := 0;

  sText := RenderText(font, 'katzeeeeeee', $fe198e);
//sText :=  TTF_RenderText_Blended( font, 'huuuuuuuuuund', clrFG);

  // Convert the rendered text to a known format
  w :=  nextpoweroftwo(sText.w);
  h :=  nextpoweroftwo(sText.h);

intermediary := SDL_CreateRGBSurface(0, w, h, 32,
			$000000ff, $0000ff00, $00ff0000, $ff000000);

 SDL_SetAlpha(intermediary, 0, 255);
 SDL_SetAlpha(sText, 0, 255);
 SDL_BlitSurface(sText, 0, intermediary, 0);

 glGenTextures(1, @texture);

  glBindTexture(GL_TEXTURE_2D, texture);

  glTexImage2D(GL_TEXTURE_2D, 0, 4, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, intermediary.pixels);

  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);




      glEnable(GL_TEXTURE_2D);
      glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
      glEnable(GL_BLEND);
        glBindTexture(GL_TEXTURE_2D, texture);
        glColor4f(1, 0, 1, 1);

      glbegin(gl_quads);
        glTexCoord2f(0,0); glVertex2f(200,     300);
        glTexCoord2f(0,sText.h/h); glVertex2f(200    , 300 + sText.h);
        glTexCoord2f(sText.w/w,sText.h/h); glVertex2f(200 + sText.w, 300 + sText.h);
        glTexCoord2f(sText.w/w,0); glVertex2f(200 + sText.w, 300);
      glEnd;
      glfinish();
      glDisable(GL_BLEND);
      gldisable(gl_texture_2d);




SDL_FreeSurface( sText );
SDL_FreeSurface( intermediary );
glDeleteTextures(1, @texture);
TTF_CloseFont( font );

end;

procedure glPrintCut(text: pchar);
var
  Letter:       char;
  PToDo:        real;
  PTotWidth:    real;
  PDoingNow:    real;
  S:            string;
begin
  if (Text = '') then   			        // If There's No Text
                Exit;					        // Do Nothing

  PTotWidth := glTextWidth(Text);
  PToDo := Fonts[ActFont].Done;

  while (length(text) > 0) do begin
    // cut
    Letter := Text[0];
    Text := pchar(Copy(Text, 2, Length(Text)-1));

    // analyze
    S := Letter;
    PDoingNow := glTextWidth(pchar(S)) / PTotWidth;

    // drawing
    if (PToDo > 0) and (PDoingNow <= PToDo) then
      glPrintLetter(Letter);

    if (PToDo > 0) and (PDoingNow > PToDo) then begin
      glPrintLetterCut(Letter, 0, PToDo / PDoingNow);
      glColor3f(PColR, PColG,  PColB);
      glPrintLetterCut(Letter, PToDo / PDoingNow, 1);
    end;

    if (PToDo <= 0) then
      glPrintLetter(Letter);

    PToDo := PToDo - PDoingNow;

  end; // while
end;


procedure SetFontPos(X, Y: real);
begin
  Fonts[ActFont].Tex.X := X;
  Fonts[ActFont].Tex.Y := Y;
end;

procedure SetFontSize(Size: real);
begin
  Fonts[ActFont].Tex.H := 30 * (Size/10);
end;

procedure SetFontStyle(Style: integer);
begin
  ActFont := Style;
end;

procedure SetFontItalic(Enable: boolean);
begin
  Fonts[ActFont].Italic := Enable;
end;

procedure SetFontAspectW(Aspect: real);
begin
  Fonts[ActFont].AspectW := Aspect;
end;


{$IFDEF LAZARUS}
{$IFDEF win32}
initialization
  {$I UltraStar.lrs}
{$ENDIF}
{$ENDIF}


end.