Fix crash if Num_walls=0
[btb/d2x.git] / console / CON_console.c
1 /*  CON_console.c
2  *  Written By: Garrett Banuk <mongoose@mongeese.org>
3  *  Code Cleanup and heavily extended by: Clemens Wacha <reflex-2000@gmx.net>
4  *  Ported to use native Descent interfaces by: Bradley Bell <btb@icculus.org>
5  *
6  *  This is free, just be sure to give us credit when using it
7  *  in any of your programs.
8  */
9
10 #ifdef HAVE_CONFIG_H
11 #include <conf.h>
12 #endif
13
14 #include <stdlib.h>
15 #include <stdio.h>
16 #include <string.h>
17 #include <stdarg.h>
18
19 #include "CON_console.h"
20
21 #include "u_mem.h"
22 #include "gr.h"
23 #include "timer.h"
24
25
26 #define FG_COLOR    grd_curcanv->cv_font_fg_color
27 #define get_msecs() approx_fsec_to_msec(timer_get_approx_seconds())
28
29
30 /* This contains a pointer to the "topmost" console. The console that
31  * is currently taking keyboard input. */
32 static ConsoleInformation *Topmost;
33
34 /*  Takes keys from the keyboard and inputs them to the console
35     If the event was not handled (i.e. WM events or unknown ctrl-shift 
36     sequences) the function returns the event for further processing. */
37 int CON_Events(int event)
38 {
39         if(Topmost == NULL)
40                 return event;
41         if(!CON_isVisible(Topmost))
42                 return event;
43
44         if(event & KEY_CTRLED)
45         {
46                 //CTRL pressed
47                 switch(event & ~KEY_CTRLED)
48                 {
49                 case KEY_A:
50                         Cursor_Home(Topmost);
51                         break;
52                 case KEY_E:
53                         Cursor_End(Topmost);
54                         break;
55                 case KEY_C:
56                         Clear_Command(Topmost);
57                         break;
58                 case KEY_L:
59                         Clear_History(Topmost);
60                         CON_UpdateConsole(Topmost);
61                         break;
62                 default:
63                         return event;
64                 }
65         }
66         else if(event & KEY_ALTED)
67         {
68                 //the console does not handle ALT combinations!
69                 return event;
70         }
71         else
72         {
73                 //first of all, check if the console hide key was pressed
74                 if(event == Topmost->HideKey)
75                 {
76                         CON_Hide(Topmost);
77                         return 0;
78                 }
79                 switch (event & 0xff)
80                 {
81                 case KEY_LSHIFT:
82                 case KEY_RSHIFT:
83                         return event;
84                 case KEY_HOME:
85                         if(event & KEY_SHIFTED)
86                         {
87                                 Topmost->ConsoleScrollBack = Topmost->LineBuffer-1;
88                                 CON_UpdateConsole(Topmost);
89                         } else {
90                                 Cursor_Home(Topmost);
91                         }
92                         break;
93                 case KEY_END:
94                         if(event & KEY_SHIFTED)
95                         {
96                                 Topmost->ConsoleScrollBack = 0;
97                                 CON_UpdateConsole(Topmost);
98                         } else {
99                                 Cursor_End(Topmost);
100                         }
101                         break;
102                 case KEY_PAGEUP:
103                         Topmost->ConsoleScrollBack += CON_LINE_SCROLL;
104                         if(Topmost->ConsoleScrollBack > Topmost->LineBuffer-1)
105                                 Topmost->ConsoleScrollBack = Topmost->LineBuffer-1;
106
107                         CON_UpdateConsole(Topmost);
108                         break;
109                 case KEY_PAGEDOWN:
110                         Topmost->ConsoleScrollBack -= CON_LINE_SCROLL;
111                         if(Topmost->ConsoleScrollBack < 0)
112                                 Topmost->ConsoleScrollBack = 0;
113                         CON_UpdateConsole(Topmost);
114                         break;
115                 case KEY_UP:
116                         Command_Up(Topmost);
117                         break;
118                 case KEY_DOWN:
119                         Command_Down(Topmost);
120                         break;
121                 case KEY_LEFT:
122                         Cursor_Left(Topmost);
123                         break;
124                 case KEY_RIGHT:
125                         Cursor_Right(Topmost);
126                         break;
127                 case KEY_BACKSP:
128                         Cursor_BSpace(Topmost);
129                         break;
130                 case KEY_DELETE:
131                         Cursor_Del(Topmost);
132                         break;
133                 case KEY_INSERT:
134                         Topmost->InsMode = 1-Topmost->InsMode;
135                         break;
136                 case KEY_TAB:
137                         CON_TabCompletion(Topmost);
138                         break;
139                 case KEY_ENTER:
140                         if(strlen(Topmost->Command) > 0) {
141                                 CON_NewLineCommand(Topmost);
142
143                                 // copy the input into the past commands strings
144                                 strcpy(Topmost->CommandLines[0], Topmost->Command);
145
146                                 // display the command including the prompt
147                                 CON_Out(Topmost, "%s%s", Topmost->Prompt, Topmost->Command);
148                                 CON_UpdateConsole(Topmost);
149
150                                 CON_Execute(Topmost, Topmost->Command);
151                                 //printf("Command: %s\n", Topmost->Command);
152
153                                 Clear_Command(Topmost);
154                                 Topmost->CommandScrollBack = -1;
155                         }
156                         break;
157                 case KEY_ESC:
158                         //deactivate Console
159                         CON_Hide(Topmost);
160                         return 0;
161                 default:
162                         if(Topmost->InsMode)
163                                 Cursor_Add(Topmost, event);
164                         else {
165                                 Cursor_Add(Topmost, event);
166                                 Cursor_Del(Topmost);
167                         }
168                 }
169         }
170         return 0;
171 }
172
173 #if 0
174 /* CON_AlphaGL() -- sets the alpha channel of an SDL_Surface to the
175  * specified value.  Preconditions: the surface in question is RGBA.
176  * 0 <= a <= 255, where 0 is transparent and 255 is opaque. */
177 void CON_AlphaGL(SDL_Surface *s, int alpha) {
178         Uint8 val;
179         int x, y, w, h;
180         Uint32 pixel;
181         Uint8 r, g, b, a;
182         SDL_PixelFormat *format;
183         static char errorPrinted = 0;
184
185
186         /* debugging assertions -- these slow you down, but hey, crashing sucks */
187         if(!s) {
188                 PRINT_ERROR("NULL Surface passed to CON_AlphaGL\n");
189                 return;
190         }
191
192         /* clamp alpha value to 0...255 */
193         if(alpha < SDL_ALPHA_TRANSPARENT)
194                 val = SDL_ALPHA_TRANSPARENT;
195         else if(alpha > SDL_ALPHA_OPAQUE)
196                 val = SDL_ALPHA_OPAQUE;
197         else
198                 val = alpha;
199
200         /* loop over alpha channels of each pixel, setting them appropriately. */
201         w = s->w;
202         h = s->h;
203         format = s->format;
204         switch (format->BytesPerPixel) {
205         case 2:
206                 /* 16-bit surfaces don't seem to support alpha channels. */
207                 if(!errorPrinted) {
208                         errorPrinted = 1;
209                         PRINT_ERROR("16-bit SDL surfaces do not support alpha-blending under OpenGL.\n");
210                 }
211                 break;
212         case 4: {
213                         /* we can do this very quickly in 32-bit mode.  24-bit is more
214                          * difficult.  And since 24-bit mode is reall the same as 32-bit,
215                          * so it usually ends up taking this route too.  Win!  Unroll loop
216                          * and use pointer arithmetic for extra speed. */
217                         int numpixels = h * (w << 2);
218                         Uint8 *pix = (Uint8 *) (s->pixels);
219                         Uint8 *last = pix + numpixels;
220                         Uint8 *pixel;
221                         if((numpixels & 0x7) == 0)
222                                 for(pixel = pix + 3; pixel < last; pixel += 32)
223                                         *pixel = *(pixel + 4) = *(pixel + 8) = *(pixel + 12) = *(pixel + 16) = *(pixel + 20) = *(pixel + 24) = *(pixel + 28) = val;
224                         else
225                                 for(pixel = pix + 3; pixel < last; pixel += 4)
226                                         *pixel = val;
227                         break;
228                 }
229         default:
230                 /* we have no choice but to do this slowly.  <sigh> */
231                 for(y = 0; y < h; ++y)
232                         for(x = 0; x < w; ++x) {
233                                 char print = 0;
234                                 /* Lock the surface for direct access to the pixels */
235                                 if(SDL_MUSTLOCK(s) && SDL_LockSurface(s) < 0) {
236                                         PRINT_ERROR("Can't lock surface: ");
237                                         fprintf(stderr, "%s\n", SDL_GetError());
238                                         return;
239                                 }
240                                 pixel = DT_GetPixel(s, x, y);
241                                 if(x == 0 && y == 0)
242                                         print = 1;
243                                 SDL_GetRGBA(pixel, format, &r, &g, &b, &a);
244                                 pixel = SDL_MapRGBA(format, r, g, b, val);
245                                 SDL_GetRGBA(pixel, format, &r, &g, &b, &a);
246                                 DT_PutPixel(s, x, y, pixel);
247
248                                 /* unlock surface again */
249                                 if(SDL_MUSTLOCK(s))
250                                         SDL_UnlockSurface(s);
251                         }
252                 break;
253         }
254 }
255 #endif
256
257
258 /* Updates the console buffer */
259 void CON_UpdateConsole(ConsoleInformation *console) {
260         int loop;
261         int loop2;
262         int Screenlines;
263         grs_canvas *canv_save;
264         short orig_color;
265
266         if(!console)
267                 return;
268
269         /* Due to the Blits, the update is not very fast: So only update if it's worth it */
270         if(!CON_isVisible(console))
271                 return;
272
273         Screenlines = console->ConsoleSurface->cv_h / (CON_LINE_SPACE + console->ConsoleSurface->cv_font->ft_h);
274
275         canv_save = grd_curcanv;
276         gr_set_current_canvas(console->ConsoleSurface);
277
278 #if 0
279         SDL_FillRect(console->ConsoleSurface, NULL, SDL_MapRGBA(console->ConsoleSurface->format, 0, 0, 0, console->ConsoleAlpha));
280 #else
281         //gr_rect(0,0,
282 #endif
283
284 #if 0
285         if(console->OutputScreen->flags & SDL_OPENGLBLIT)
286                 SDL_SetAlpha(console->ConsoleSurface, 0, SDL_ALPHA_OPAQUE);
287 #endif
288
289         /* draw the background image if there is one */
290         if(console->BackgroundImage)
291                 gr_bitmap(0, 0, console->BackgroundImage);
292
293         /* Draw the text from the back buffers, calculate in the scrollback from the user
294          * this is a normal SDL software-mode blit, so we need to temporarily set the ColorKey
295          * for the font, and then clear it when we're done.
296          */
297 #if 0
298         if((console->OutputScreen->flags & SDL_OPENGLBLIT) && (console->OutputScreen->format->BytesPerPixel > 2)) {
299                 Uint32 *pix = (Uint32 *) (CurrentFont->FontSurface->pixels);
300                 SDL_SetColorKey(CurrentFont->FontSurface, SDL_SRCCOLORKEY, *pix);
301         }
302 #endif
303
304         //now draw text from last but second line to top
305         for(loop = 0; loop < Screenlines-1 && loop < console->LineBuffer - console->ConsoleScrollBack; loop++) {
306                 if(console->ConsoleScrollBack != 0 && loop == 0)
307                         for(loop2 = 0; loop2 < (console->VChars / 5) + 1; loop2++)
308                         {
309                                 orig_color = FG_COLOR;
310                                 gr_string(CON_CHAR_BORDER + (loop2*5*console->ConsoleSurface->cv_font->ft_w), (Screenlines - loop - 2) * (CON_LINE_SPACE + console->ConsoleSurface->cv_font->ft_h), CON_SCROLL_INDICATOR);
311                                 FG_COLOR = orig_color;
312                         }
313                 else
314                 {
315                         orig_color = FG_COLOR;
316                         gr_string(CON_CHAR_BORDER, (Screenlines - loop - 2) * (CON_LINE_SPACE + console->ConsoleSurface->cv_font->ft_h), console->ConsoleLines[console->ConsoleScrollBack + loop]);
317                         FG_COLOR = orig_color;
318                 }
319         }
320
321         gr_set_current_canvas(canv_save);
322
323 #if 0
324         if(console->OutputScreen->flags & SDL_OPENGLBLIT)
325                 SDL_SetColorKey(CurrentFont->FontSurface, 0, 0);
326 #endif
327 }
328
329 void CON_UpdateOffset(ConsoleInformation* console) {
330         if(!console)
331                 return;
332
333         switch(console->Visible) {
334         case CON_CLOSING:
335                 console->RaiseOffset -= CON_OPENCLOSE_SPEED;
336                 if(console->RaiseOffset <= 0) {
337                         console->RaiseOffset = 0;
338                         console->Visible = CON_CLOSED;
339                 }
340                 break;
341         case CON_OPENING:
342                 console->RaiseOffset += CON_OPENCLOSE_SPEED;
343                 if(console->RaiseOffset >= console->ConsoleSurface->cv_h) {
344                         console->RaiseOffset = console->ConsoleSurface->cv_h;
345                         console->Visible = CON_OPEN;
346                 }
347                 break;
348         case CON_OPEN:
349         case CON_CLOSED:
350                 break;
351         }
352 }
353
354 /* Draws the console buffer to the screen if the console is "visible" */
355 void CON_DrawConsole(ConsoleInformation *console) {
356         grs_canvas *canv_save;
357         grs_bitmap *clip;
358
359         if(!console)
360                 return;
361
362         /* only draw if console is visible: here this means, that the console is not CON_CLOSED */
363         if(console->Visible == CON_CLOSED)
364                 return;
365
366         /* Update the scrolling offset */
367         CON_UpdateOffset(console);
368
369         /* Update the command line since it has a blinking cursor */
370         DrawCommandLine();
371
372 #if 0
373         /* before drawing, make sure the alpha channel of the console surface is set
374          * properly.  (sigh) I wish we didn't have to do this every frame... */
375         if(console->OutputScreen->flags & SDL_OPENGLBLIT)
376                 CON_AlphaGL(console->ConsoleSurface, console->ConsoleAlpha);
377 #endif
378
379         canv_save = grd_curcanv;
380         gr_set_current_canvas(&console->OutputScreen->sc_canvas);
381
382         clip = gr_create_sub_bitmap(&console->ConsoleSurface->cv_bitmap, 0, console->ConsoleSurface->cv_h - console->RaiseOffset, console->ConsoleSurface->cv_w, console->RaiseOffset);
383
384         gr_bitmap(console->DispX, console->DispY, clip);
385         gr_free_sub_bitmap(clip);
386
387 #if 0
388         if(console->OutputScreen->flags & SDL_OPENGLBLIT)
389                 SDL_UpdateRects(console->OutputScreen, 1, &DestRect);
390 #endif
391
392         gr_set_current_canvas(canv_save);
393 }
394
395
396 /* Initializes the console */
397 ConsoleInformation *CON_Init(grs_font *Font, grs_screen *DisplayScreen, int lines, int x, int y, int w, int h)
398 {
399         int loop;
400         ConsoleInformation *newinfo;
401
402
403         /* Create a new console struct and init it. */
404         if((newinfo = (ConsoleInformation *) d_malloc(sizeof(ConsoleInformation))) == NULL) {
405                 //PRINT_ERROR("Could not allocate the space for a new console info struct.\n");
406                 return NULL;
407         }
408         newinfo->Visible = CON_CLOSED;
409         newinfo->RaiseOffset = 0;
410         newinfo->ConsoleLines = NULL;
411         newinfo->CommandLines = NULL;
412         newinfo->TotalConsoleLines = 0;
413         newinfo->ConsoleScrollBack = 0;
414         newinfo->TotalCommands = 0;
415         newinfo->BackgroundImage = NULL;
416 #if 0
417         newinfo->ConsoleAlpha = SDL_ALPHA_OPAQUE;
418 #endif
419         newinfo->Offset = 0;
420         newinfo->InsMode = 1;
421         newinfo->CursorPos = 0;
422         newinfo->CommandScrollBack = 0;
423         newinfo->OutputScreen = DisplayScreen;
424         newinfo->Prompt = CON_DEFAULT_PROMPT;
425         newinfo->HideKey = CON_DEFAULT_HIDEKEY;
426
427         CON_SetExecuteFunction(newinfo, Default_CmdFunction);
428         CON_SetTabCompletion(newinfo, Default_TabFunction);
429
430         /* make sure that the size of the console is valid */
431         if(w > newinfo->OutputScreen->sc_w || w < Font->ft_w * 32)
432                 w = newinfo->OutputScreen->sc_w;
433         if(h > newinfo->OutputScreen->sc_h || h < Font->ft_h)
434                 h = newinfo->OutputScreen->sc_h;
435         if(x < 0 || x > newinfo->OutputScreen->sc_w - w)
436                 newinfo->DispX = 0;
437         else
438                 newinfo->DispX = x;
439         if(y < 0 || y > newinfo->OutputScreen->sc_h - h)
440                 newinfo->DispY = 0;
441         else
442                 newinfo->DispY = y;
443
444         /* load the console surface */
445         newinfo->ConsoleSurface = gr_create_canvas(w, h);
446
447         /* Load the consoles font */
448         {
449                 grs_canvas *canv_save;
450
451                 canv_save = grd_curcanv;
452                 gr_set_current_canvas(newinfo->ConsoleSurface);
453                 gr_set_curfont(Font);
454                 gr_set_fontcolor(gr_getcolor(63,63,63), -1);
455                 gr_set_current_canvas(canv_save);
456         }
457
458
459         /* Load the dirty rectangle for user input */
460         newinfo->InputBackground = gr_create_bitmap(w, newinfo->ConsoleSurface->cv_font->ft_h);
461 #if 0
462         SDL_FillRect(newinfo->InputBackground, NULL, SDL_MapRGBA(newinfo->ConsoleSurface->format, 0, 0, 0, SDL_ALPHA_OPAQUE));
463 #endif
464
465         /* calculate the number of visible characters in the command line */
466         newinfo->VChars = (w - CON_CHAR_BORDER) / newinfo->ConsoleSurface->cv_font->ft_w;
467         if(newinfo->VChars > CON_CHARS_PER_LINE)
468                 newinfo->VChars = CON_CHARS_PER_LINE;
469
470         /* We would like to have a minumum # of lines to guarentee we don't create a memory error */
471         if(h / (CON_LINE_SPACE + newinfo->ConsoleSurface->cv_font->ft_h) > lines)
472                 newinfo->LineBuffer = h / (CON_LINE_SPACE + newinfo->ConsoleSurface->cv_font->ft_h);
473         else
474                 newinfo->LineBuffer = lines;
475
476
477         newinfo->ConsoleLines = (char **)d_malloc(sizeof(char *) * newinfo->LineBuffer);
478         newinfo->CommandLines = (char **)d_malloc(sizeof(char *) * newinfo->LineBuffer);
479         for(loop = 0; loop <= newinfo->LineBuffer - 1; loop++) {
480                 newinfo->ConsoleLines[loop] = (char *)d_calloc(CON_CHARS_PER_LINE, sizeof(char));
481                 newinfo->CommandLines[loop] = (char *)d_calloc(CON_CHARS_PER_LINE, sizeof(char));
482         }
483         memset(newinfo->Command, 0, CON_CHARS_PER_LINE);
484         memset(newinfo->LCommand, 0, CON_CHARS_PER_LINE);
485         memset(newinfo->RCommand, 0, CON_CHARS_PER_LINE);
486         memset(newinfo->VCommand, 0, CON_CHARS_PER_LINE);
487
488
489         CON_Out(newinfo, "Console initialised.");
490         CON_NewLineConsole(newinfo);
491         //CON_ListCommands(newinfo);
492
493         return newinfo;
494 }
495
496 /* Makes the console visible */
497 void CON_Show(ConsoleInformation *console) {
498         if(console) {
499                 console->Visible = CON_OPENING;
500                 CON_UpdateConsole(console);
501         }
502 }
503
504 /* Hides the console (make it invisible) */
505 void CON_Hide(ConsoleInformation *console) {
506         if(console)
507                 console->Visible = CON_CLOSING;
508 }
509
510 /* tells wether the console is visible or not */
511 int CON_isVisible(ConsoleInformation *console) {
512         if(!console)
513                 return CON_CLOSED;
514         return((console->Visible == CON_OPEN) || (console->Visible == CON_OPENING));
515 }
516
517 /* Frees all the memory loaded by the console */
518 void CON_Destroy(ConsoleInformation *console) {
519         CON_Free(console);
520 }
521
522 /* Frees all the memory loaded by the console */
523 void CON_Free(ConsoleInformation *console) {
524         int i;
525
526         if(!console)
527                 return;
528
529         //CON_DestroyCommands();
530         for(i = 0; i <= console->LineBuffer - 1; i++) {
531                 d_free(console->ConsoleLines[i]);
532                 d_free(console->CommandLines[i]);
533         }
534         d_free(console->ConsoleLines);
535         d_free(console->CommandLines);
536
537         console->ConsoleLines = NULL;
538         console->CommandLines = NULL;
539
540         gr_free_canvas(console->ConsoleSurface);
541         console->ConsoleSurface = NULL;
542
543         if (console->BackgroundImage)
544                 gr_free_bitmap(console->BackgroundImage);
545         console->BackgroundImage = NULL;
546
547         gr_free_bitmap(console->InputBackground);
548         console->InputBackground = NULL;
549
550         d_free(console);
551 }
552
553
554 /* Increments the console lines */
555 void CON_NewLineConsole(ConsoleInformation *console) {
556         int loop;
557         char* temp;
558
559         if(!console)
560                 return;
561
562         temp = console->ConsoleLines[console->LineBuffer - 1];
563
564         for(loop = console->LineBuffer - 1; loop > 0; loop--)
565                 console->ConsoleLines[loop] = console->ConsoleLines[loop - 1];
566
567         console->ConsoleLines[0] = temp;
568
569         memset(console->ConsoleLines[0], 0, CON_CHARS_PER_LINE);
570         if(console->TotalConsoleLines < console->LineBuffer - 1)
571                 console->TotalConsoleLines++;
572
573         //Now adjust the ConsoleScrollBack
574         //dont scroll if not at bottom
575         if(console->ConsoleScrollBack != 0)
576                 console->ConsoleScrollBack++;
577         //boundaries
578         if(console->ConsoleScrollBack > console->LineBuffer-1)
579                 console->ConsoleScrollBack = console->LineBuffer-1;
580
581 }
582
583
584 /* Increments the command lines */
585 void CON_NewLineCommand(ConsoleInformation *console) {
586         int loop;
587         char *temp;
588
589         if(!console)
590                 return;
591
592         temp  = console->CommandLines[console->LineBuffer - 1];
593
594
595         for(loop = console->LineBuffer - 1; loop > 0; loop--)
596                 console->CommandLines[loop] = console->CommandLines[loop - 1];
597
598         console->CommandLines[0] = temp;
599
600         memset(console->CommandLines[0], 0, CON_CHARS_PER_LINE);
601         if(console->TotalCommands < console->LineBuffer - 1)
602                 console->TotalCommands++;
603 }
604
605 /* Draws the command line the user is typing in to the screen */
606 /* completely rewritten by C.Wacha */
607 void DrawCommandLine() {
608         int x;
609         int commandbuffer;
610 #if 0
611         grs_font* CurrentFont;
612 #endif
613         static unsigned int LastBlinkTime = 0;  /* Last time the consoles cursor blinked */
614         static int LastCursorPos = 0;           // Last Cursor Position
615         static int Blink = 0;                   /* Is the cursor currently blinking */
616         grs_canvas *canv_save;
617         short orig_color;
618
619         if(!Topmost)
620                 return;
621
622         commandbuffer = Topmost->VChars - strlen(Topmost->Prompt)-1; // -1 to make cursor visible
623
624 #if 0
625         CurrentFont = Topmost->ConsoleSurface->cv_font;
626 #endif
627
628         //Concatenate the left and right side to command
629         strcpy(Topmost->Command, Topmost->LCommand);
630         strncat(Topmost->Command, Topmost->RCommand, strlen(Topmost->RCommand));
631
632         //calculate display offset from current cursor position
633         if(Topmost->Offset < Topmost->CursorPos - commandbuffer)
634                 Topmost->Offset = Topmost->CursorPos - commandbuffer;
635         if(Topmost->Offset > Topmost->CursorPos)
636                 Topmost->Offset = Topmost->CursorPos;
637
638         //first add prompt to visible part
639         strcpy(Topmost->VCommand, Topmost->Prompt);
640
641         //then add the visible part of the command
642         strncat(Topmost->VCommand, &Topmost->Command[Topmost->Offset], strlen(&Topmost->Command[Topmost->Offset]));
643
644         //now display the result
645
646 #if 0
647         //once again we're drawing text, so in OpenGL context we need to temporarily set up
648         //software-mode transparency.
649         if(Topmost->OutputScreen->flags & SDL_OPENGLBLIT) {
650                 Uint32 *pix = (Uint32 *) (CurrentFont->FontSurface->pixels);
651                 SDL_SetColorKey(CurrentFont->FontSurface, SDL_SRCCOLORKEY, *pix);
652         }
653 #endif
654
655         canv_save = grd_curcanv;
656         gr_set_current_canvas(Topmost->ConsoleSurface);
657
658         //first of all restore InputBackground
659         gr_bitmap(0, Topmost->ConsoleSurface->cv_h - Topmost->ConsoleSurface->cv_font->ft_h, Topmost->InputBackground);
660
661         //now add the text
662         orig_color = FG_COLOR;
663         gr_string(CON_CHAR_BORDER, Topmost->ConsoleSurface->cv_h - Topmost->ConsoleSurface->cv_font->ft_h, Topmost->VCommand);
664         FG_COLOR = orig_color;
665
666         //at last add the cursor
667         //check if the blink period is over
668         if(get_msecs() > LastBlinkTime) {
669                 LastBlinkTime = get_msecs() + CON_BLINK_RATE;
670                 if(Blink)
671                         Blink = 0;
672                 else
673                         Blink = 1;
674         }
675
676         //check if cursor has moved - if yes display cursor anyway
677         if(Topmost->CursorPos != LastCursorPos) {
678                 LastCursorPos = Topmost->CursorPos;
679                 LastBlinkTime = get_msecs() + CON_BLINK_RATE;
680                 Blink = 1;
681         }
682
683         if(Blink) {
684                 x = CON_CHAR_BORDER + Topmost->ConsoleSurface->cv_font->ft_w * (Topmost->CursorPos - Topmost->Offset + strlen(Topmost->Prompt));
685                 orig_color = FG_COLOR;
686                 if(Topmost->InsMode)
687                         gr_string(x, Topmost->ConsoleSurface->cv_h - Topmost->ConsoleSurface->cv_font->ft_h, CON_INS_CURSOR);
688                 else
689                         gr_string(x, Topmost->ConsoleSurface->cv_h - Topmost->ConsoleSurface->cv_font->ft_h, CON_OVR_CURSOR);
690                 FG_COLOR = orig_color;
691         }
692
693         gr_set_current_canvas(canv_save);
694
695
696 #if 0
697         if(Topmost->OutputScreen->flags & SDL_OPENGLBLIT) {
698                 SDL_SetColorKey(CurrentFont->FontSurface, 0, 0);
699         }
700 #endif
701 }
702
703 #ifdef _MSC_VER
704 # define vsnprintf _vsnprintf
705 #endif
706
707 /* Outputs text to the console (in game), up to CON_CHARS_PER_LINE chars can be entered */
708 void CON_Out(ConsoleInformation *console, const char *str, ...) {
709         va_list marker;
710         //keep some space free for stuff like CON_Out(console, "blablabla %s", console->Command);
711         char temp[CON_CHARS_PER_LINE + 128];
712         char* ptemp;
713
714         if(!console)
715                 return;
716
717         va_start(marker, str);
718         vsnprintf(temp, CON_CHARS_PER_LINE + 127, str, marker);
719         va_end(marker);
720
721         ptemp = temp;
722
723         //temp now contains the complete string we want to output
724         // the only problem is that temp is maybe longer than the console
725         // width so we have to cut it into several pieces
726
727         if(console->ConsoleLines) {
728                 while(strlen(ptemp) > console->VChars) {
729                         CON_NewLineConsole(console);
730                         strncpy(console->ConsoleLines[0], ptemp, console->VChars);
731                         console->ConsoleLines[0][console->VChars] = '\0';
732                         ptemp = &ptemp[console->VChars];
733                 }
734                 CON_NewLineConsole(console);
735                 strncpy(console->ConsoleLines[0], ptemp, console->VChars);
736                 console->ConsoleLines[0][console->VChars] = '\0';
737                 CON_UpdateConsole(console);
738         }
739
740         /* And print to stdout */
741         //printf("%s\n", temp);
742 }
743
744
745 #if 0
746 /* Sets the alpha level of the console, 0 turns off alpha blending */
747 void CON_Alpha(ConsoleInformation *console, unsigned char alpha) {
748         if(!console)
749                 return;
750
751         /* store alpha as state! */
752         console->ConsoleAlpha = alpha;
753
754         if((console->OutputScreen->flags & SDL_OPENGLBLIT) == 0) {
755                 if(alpha == 0)
756                         SDL_SetAlpha(console->ConsoleSurface, 0, alpha);
757                 else
758                         SDL_SetAlpha(console->ConsoleSurface, SDL_SRCALPHA, alpha);
759         }
760
761         //      CON_UpdateConsole(console);
762 }
763 #endif
764
765
766 /* Adds  background image to the console, scaled to size of console*/
767 int CON_Background(ConsoleInformation *console, grs_bitmap *image)
768 {
769         if(!console)
770                 return 1;
771
772         /* Free the background from the console */
773         if (image == NULL) {
774                 if (console->BackgroundImage)
775                         gr_free_bitmap(console->BackgroundImage);
776                 console->BackgroundImage = NULL;
777 #if 0
778                 SDL_FillRect(console->InputBackground, NULL, SDL_MapRGBA(console->ConsoleSurface->format, 0, 0, 0, SDL_ALPHA_OPAQUE));
779 #endif
780                 return 0;
781         }
782
783         /* Load a new background */
784         if (console->BackgroundImage)
785                 gr_free_bitmap(console->BackgroundImage);
786         console->BackgroundImage = gr_create_bitmap(console->ConsoleSurface->cv_w, console->ConsoleSurface->cv_h);
787         gr_bitmap_scale_to(image, console->BackgroundImage);
788
789 #if 0
790         SDL_FillRect(console->InputBackground, NULL, SDL_MapRGBA(console->ConsoleSurface->format, 0, 0, 0, SDL_ALPHA_OPAQUE));
791 #endif
792         gr_bm_bitblt(console->BackgroundImage->bm_w, console->InputBackground->bm_h, 0, 0, 0, console->ConsoleSurface->cv_h - console->ConsoleSurface->cv_font->ft_h, console->BackgroundImage, console->InputBackground);
793
794         return 0;
795 }
796
797 /* Sets font info for the console */
798 void CON_Font(ConsoleInformation *console, grs_font *font, int fg, int bg)
799 {
800         grs_canvas *canv_save;
801
802         canv_save = grd_curcanv;
803         gr_set_current_canvas(console->ConsoleSurface);
804         gr_set_curfont(font);
805         gr_set_fontcolor(fg, bg);
806         gr_set_current_canvas(canv_save);
807 }
808
809 /* takes a new x and y of the top left of the console window */
810 void CON_Position(ConsoleInformation *console, int x, int y) {
811         if(!console)
812                 return;
813
814         if(x < 0 || x > console->OutputScreen->sc_w - console->ConsoleSurface->cv_w)
815                 console->DispX = 0;
816         else
817                 console->DispX = x;
818
819         if(y < 0 || y > console->OutputScreen->sc_h - console->ConsoleSurface->cv_h)
820                 console->DispY = 0;
821         else
822                 console->DispY = y;
823 }
824
825 void gr_init_bitmap_alloc( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline);
826 /* resizes the console, has to reset alot of stuff
827  * returns 1 on error */
828 int CON_Resize(ConsoleInformation *console, int x, int y, int w, int h)
829 {
830         if(!console)
831                 return 1;
832
833         /* make sure that the size of the console is valid */
834         if(w > console->OutputScreen->sc_w || w < console->ConsoleSurface->cv_font->ft_w * 32)
835                 w = console->OutputScreen->sc_w;
836         if(h > console->OutputScreen->sc_h || h < console->ConsoleSurface->cv_font->ft_h)
837                 h = console->OutputScreen->sc_h;
838         if(x < 0 || x > console->OutputScreen->sc_w - w)
839                 console->DispX = 0;
840         else
841                 console->DispX = x;
842         if(y < 0 || y > console->OutputScreen->sc_h - h)
843                 console->DispY = 0;
844         else
845                 console->DispY = y;
846
847         /* resize console surface */
848         gr_free_bitmap_data(&console->ConsoleSurface->cv_bitmap);
849         gr_init_bitmap_alloc(&console->ConsoleSurface->cv_bitmap, BM_LINEAR, 0, 0, w, h, w);
850
851         /* Load the dirty rectangle for user input */
852         gr_free_bitmap(console->InputBackground);
853         console->InputBackground = gr_create_bitmap(w, console->ConsoleSurface->cv_font->ft_h);
854
855         /* Now reset some stuff dependent on the previous size */
856         console->ConsoleScrollBack = 0;
857
858         /* Reload the background image (for the input text area) in the console */
859         if(console->BackgroundImage) {
860 #if 0
861                 SDL_FillRect(console->InputBackground, NULL, SDL_MapRGBA(console->ConsoleSurface->format, 0, 0, 0, SDL_ALPHA_OPAQUE));
862 #endif
863                 gr_bm_bitblt(console->BackgroundImage->bm_w, console->InputBackground->bm_h, 0, 0, 0, console->ConsoleSurface->cv_h - console->ConsoleSurface->cv_font->ft_h, console->BackgroundImage, console->InputBackground);
864         }
865
866 #if 0
867         /* restore the alpha level */
868         CON_Alpha(console, console->ConsoleAlpha);
869 #endif
870         return 0;
871 }
872
873 /* Transfers the console to another screen surface, and adjusts size */
874 int CON_Transfer(ConsoleInformation *console, grs_screen *new_outputscreen, int x, int y, int w, int h)
875 {
876         if(!console)
877                 return 1;
878
879         console->OutputScreen = new_outputscreen;
880
881         return(CON_Resize(console, x, y, w, h));
882 }
883
884 /* Sets the topmost console for input */
885 void CON_Topmost(ConsoleInformation *console) {
886         grs_canvas *canv_save;
887         short orig_color;
888
889         if(!console)
890                 return;
891
892         // Make sure the blinking cursor is gone
893         if(Topmost) {
894                 canv_save = grd_curcanv;
895                 gr_set_current_canvas(Topmost->ConsoleSurface);
896
897                 gr_bitmap(0, Topmost->ConsoleSurface->cv_h - Topmost->ConsoleSurface->cv_font->ft_h, Topmost->InputBackground);
898                 orig_color = FG_COLOR;
899                 gr_string(CON_CHAR_BORDER, Topmost->ConsoleSurface->cv_h - Topmost->ConsoleSurface->cv_font->ft_h, Topmost->VCommand);
900                 FG_COLOR = orig_color;
901
902                 gr_set_current_canvas(canv_save);
903         }
904         Topmost = console;
905 }
906
907 /* Sets the Prompt for console */
908 void CON_SetPrompt(ConsoleInformation *console, char* newprompt) {
909         if(!console)
910                 return;
911
912         //check length so we can still see at least 1 char :-)
913         if(strlen(newprompt) < console->VChars)
914                 console->Prompt = d_strdup(newprompt);
915         else
916                 CON_Out(console, "prompt too long. (max. %i chars)", console->VChars - 1);
917 }
918
919 /* Sets the key that deactivates (hides) the console. */
920 void CON_SetHideKey(ConsoleInformation *console, int key) {
921         if(console)
922                 console->HideKey = key;
923 }
924
925 /* Executes the command entered */
926 void CON_Execute(ConsoleInformation *console, char* command) {
927         if(console)
928                 console->CmdFunction(console, command);
929 }
930
931 void CON_SetExecuteFunction(ConsoleInformation *console, void(*CmdFunction)(ConsoleInformation *console2, char* command)) {
932         if(console)
933                 console->CmdFunction = CmdFunction;
934 }
935
936 void Default_CmdFunction(ConsoleInformation *console, char* command) {
937         CON_Out(console, "     No CommandFunction registered");
938         CON_Out(console, "     use 'CON_SetExecuteFunction' to register one");
939         CON_Out(console, " ");
940         CON_Out(console, "Unknown Command \"%s\"", command);
941 }
942
943 void CON_SetTabCompletion(ConsoleInformation *console, char*(*TabFunction)(char* command)) {
944         if(console)
945                 console->TabFunction = TabFunction;
946 }
947
948 void CON_TabCompletion(ConsoleInformation *console) {
949         int i,j;
950         char* command;
951
952         if(!console)
953                 return;
954
955         command = d_strdup(console->LCommand);
956         command = console->TabFunction(command);
957
958         if(!command)
959                 return; //no tab completion took place so return silently
960
961         j = strlen(command);
962         if(j > CON_CHARS_PER_LINE - 2)
963                 j = CON_CHARS_PER_LINE-1;
964
965         memset(console->LCommand, 0, CON_CHARS_PER_LINE);
966         console->CursorPos = 0;
967
968         for(i = 0; i < j; i++) {
969                 console->CursorPos++;
970                 console->LCommand[i] = command[i];
971         }
972         //add a trailing space
973         console->CursorPos++;
974         console->LCommand[j] = ' ';
975         console->LCommand[j+1] = '\0';
976 }
977
978 char* Default_TabFunction(char* command) {
979         CON_Out(Topmost, "     No TabFunction registered");
980         CON_Out(Topmost, "     use 'CON_SetTabCompletion' to register one");
981         CON_Out(Topmost, " ");
982         return NULL;
983 }
984
985 void Cursor_Left(ConsoleInformation *console) {
986         char temp[CON_CHARS_PER_LINE];
987
988         if(Topmost->CursorPos > 0) {
989                 Topmost->CursorPos--;
990                 strcpy(temp, Topmost->RCommand);
991                 strcpy(Topmost->RCommand, &Topmost->LCommand[strlen(Topmost->LCommand)-1]);
992                 strcat(Topmost->RCommand, temp);
993                 Topmost->LCommand[strlen(Topmost->LCommand)-1] = '\0';
994                 //CON_Out(Topmost, "L:%s, R:%s", Topmost->LCommand, Topmost->RCommand);
995         }
996 }
997
998 void Cursor_Right(ConsoleInformation *console) {
999         char temp[CON_CHARS_PER_LINE];
1000
1001         if(Topmost->CursorPos < strlen(Topmost->Command)) {
1002                 Topmost->CursorPos++;
1003                 strncat(Topmost->LCommand, Topmost->RCommand, 1);
1004                 strcpy(temp, Topmost->RCommand);
1005                 strcpy(Topmost->RCommand, &temp[1]);
1006                 //CON_Out(Topmost, "L:%s, R:%s", Topmost->LCommand, Topmost->RCommand);
1007         }
1008 }
1009
1010 void Cursor_Home(ConsoleInformation *console) {
1011         char temp[CON_CHARS_PER_LINE];
1012
1013         Topmost->CursorPos = 0;
1014         strcpy(temp, Topmost->RCommand);
1015         strcpy(Topmost->RCommand, Topmost->LCommand);
1016         strncat(Topmost->RCommand, temp, strlen(temp));
1017         memset(Topmost->LCommand, 0, CON_CHARS_PER_LINE);
1018 }
1019
1020 void Cursor_End(ConsoleInformation *console) {
1021         Topmost->CursorPos = strlen(Topmost->Command);
1022         strncat(Topmost->LCommand, Topmost->RCommand, strlen(Topmost->RCommand));
1023         memset(Topmost->RCommand, 0, CON_CHARS_PER_LINE);
1024 }
1025
1026 void Cursor_Del(ConsoleInformation *console) {
1027         char temp[CON_CHARS_PER_LINE];
1028
1029         if(strlen(Topmost->RCommand) > 0) {
1030                 strcpy(temp, Topmost->RCommand);
1031                 strcpy(Topmost->RCommand, &temp[1]);
1032         }
1033 }
1034
1035 void Cursor_BSpace(ConsoleInformation *console) {
1036         if(Topmost->CursorPos > 0) {
1037                 Topmost->CursorPos--;
1038                 Topmost->Offset--;
1039                 if(Topmost->Offset < 0)
1040                         Topmost->Offset = 0;
1041                 Topmost->LCommand[strlen(Topmost->LCommand)-1] = '\0';
1042         }
1043 }
1044
1045 void Cursor_Add(ConsoleInformation *console, int event)
1046 {
1047         if(strlen(Topmost->Command) < CON_CHARS_PER_LINE - 1)
1048         {
1049                 Topmost->CursorPos++;
1050                 Topmost->LCommand[strlen(Topmost->LCommand)] = key_to_ascii(event);
1051                 Topmost->LCommand[strlen(Topmost->LCommand)] = '\0';
1052         }
1053 }
1054
1055 void Clear_Command(ConsoleInformation *console) {
1056         Topmost->CursorPos = 0;
1057         memset(Topmost->VCommand, 0, CON_CHARS_PER_LINE);
1058         memset(Topmost->Command, 0, CON_CHARS_PER_LINE);
1059         memset(Topmost->LCommand, 0, CON_CHARS_PER_LINE);
1060         memset(Topmost->RCommand, 0, CON_CHARS_PER_LINE);
1061 }
1062
1063 void Clear_History(ConsoleInformation *console) {
1064         int loop;
1065
1066         for(loop = 0; loop <= console->LineBuffer - 1; loop++)
1067                 memset(console->ConsoleLines[loop], 0, CON_CHARS_PER_LINE);
1068 }
1069
1070 void Command_Up(ConsoleInformation *console) {
1071         if(console->CommandScrollBack < console->TotalCommands - 1) {
1072                 /* move back a line in the command strings and copy the command to the current input string */
1073                 console->CommandScrollBack++;
1074                 memset(console->RCommand, 0, CON_CHARS_PER_LINE);
1075                 console->Offset = 0;
1076                 strcpy(console->LCommand, console->CommandLines[console->CommandScrollBack]);
1077                 console->CursorPos = strlen(console->CommandLines[console->CommandScrollBack]);
1078                 CON_UpdateConsole(console);
1079         }
1080 }
1081
1082 void Command_Down(ConsoleInformation *console) {
1083         if(console->CommandScrollBack > -1) {
1084                 /* move forward a line in the command strings and copy the command to the current input string */
1085                 console->CommandScrollBack--;
1086                 memset(console->RCommand, 0, CON_CHARS_PER_LINE);
1087                 memset(console->LCommand, 0, CON_CHARS_PER_LINE);
1088                 console->Offset = 0;
1089                 if(console->CommandScrollBack > -1)
1090                         strcpy(console->LCommand, console->CommandLines[console->CommandScrollBack]);
1091                 console->CursorPos = strlen(console->LCommand);
1092                 CON_UpdateConsole(console);
1093         }
1094 }
1095