summaryrefslogtreecommitdiff
path: root/src/game.cpp
blob: 3dbd599f6d5f989a1c5145f4e8e8b8b843010894 (plain) (blame)
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
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
/**

  The Mana World
  Copyright 2004 The Mana World Development Team
    This file is part of The Mana World.

    The Mana World is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    any later version.

    The Mana World is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with The Mana World; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include "main.h"
#include "map.h"
#include "being.h"
#include "log.h"
#include "./gui/chat.h"
#include "./gui/gui.h"
#include "./gui/inventory.h"
#include "./gui/shop.h"
#include "./graphic/super_eagle.h"
#include "./graphic/graphic.h"
#include "./sound/sound.h"

char map_path[480];

extern TmwSound sound;

unsigned short dest_x, dest_y, src_x, src_y;
unsigned int player_x, player_y;
bool refresh_beings = false;
unsigned char keyb_state;
volatile int tick_time;
volatile bool refresh = false, action_time = false;
int current_npc;

#define MAX_TIME 10000

/** Finite states machine to keep track
		of player walking status (2 steps linear
		prediction)
		0 = Standing
		1 = Walking without confirm packet
		2 = Walking with confirm */
char walk_status = 0;

void refresh_time(void) {
	tick_time++;
	if(tick_time==MAX_TIME)tick_time = 0;
}
END_OF_FUNCTION(refresh_frame);

void refresh_screen(void) {
	refresh = true;
}
END_OF_FUNCTION(refresh_screen);

int fps = 0, frame = 0;
/** lets u only trigger an action every other second
			tmp. counts fps*/
void second(void) {
	action_time = true;
	fps = (fps + frame)/2;
	frame = 0;
}
END_OF_FUNCTION(second);

/** Return elapsed time (Warning: very unsafe
    function. It supposes the delay is always < 10s) */
short get_elapsed_time(short start_time) {
	if(start_time<=tick_time)
		return tick_time-start_time;
	else
		return tick_time+(MAX_TIME-start_time);
}

/** Main game loop */
void game() {
  status("INIT");
  do_init();
	init_graphic();
  while(state!=EXIT) {
    status("INPUT");
    do_input();
    if(refresh) {
      status("GRAPHIC");
      do_graphic();
			refresh = false;
    }
    status("PARSE");
    do_parse();
    status("FLUSH");
    flush();
		if(fps>30)
			rest(15);
  }

  exit_graphic();
  close_session();
}

/** Initialize game engine */
void do_init() {

  if(!load_map(map_path))error("Could not find map file");

  sound.StartMOD("./data/sound/Mods/somemp.xm", -1);

	// Initialize timers
  tick_time = 0;
	refresh = false;
  LOCK_VARIABLE(tick_time);
	LOCK_VARIABLE(refresh);
  install_int_ex(refresh_time, MSEC_TO_TIMER(1));
	install_int_ex(refresh_screen, /*MSEC_TO_TIMER(2000)*/BPS_TO_TIMER(75)); // Set max refresh rate to 75 fps
	install_int_ex(second, BPS_TO_TIMER(1));

  // Interrupt drawing while in background
  #ifdef WIN32
    set_display_switch_mode(SWITCH_AMNESIA);
  #else
    set_display_switch_mode(SWITCH_PAUSE);
  #endif

  // Initialize beings
  empty();
  player_node = create_node();
	player_node->id = account_ID;
  player_node->type = ACTION_NODE;
  set_coordinates(player_node->coordinates, x, y, 0);
	player_node->speed = 150;
  add_node(player_node);
  keyb_state = IDLE;

	remove("packet.list");
}

/** Clean the engine */
void do_exit() {
}

/** Check user input */
void do_input() {

  if(walk_status==0) {
		int x = get_x(player_node->coordinates);
		int y = get_y(player_node->coordinates);

    if(key[KEY_UP]) {
      if(get_walk(x, y-1)!=0) {
        walk(x, y-1, NORTH);
				walk_status = 1;
        src_x = x;
        src_y = y;
        player_node->action = WALK;
        player_node->tick_time = tick_time;
        set_coordinates(player_node->coordinates, x, y-1, NORTH);
      } else set_coordinates(player_node->coordinates, x, y, NORTH);
    } else if(key[KEY_DOWN]) {
      if(get_walk(x, y+1)!=0) {
        walk(x, y+1, SOUTH);
				walk_status = 1;
        src_x = x;
        src_y = y;
        player_node->action = WALK;
        player_node->tick_time = tick_time;
        set_coordinates(player_node->coordinates, x, y+1, SOUTH);
      } else set_coordinates(player_node->coordinates, x, y, SOUTH);
    } else if(key[KEY_LEFT]) {
      if(get_walk(x-1, y)!=0) {
        walk(x-1, y, WEST);
				walk_status = 1;
        src_x = x;
        src_y = y;
        player_node->action = WALK;
				player_node->tick_time = tick_time;
        set_coordinates(player_node->coordinates, x-1, y, WEST);
      } else set_coordinates(player_node->coordinates, x, y, WEST);
    } else if(key[KEY_RIGHT]) {
      if(get_walk(x+1, y)!=0) {
        walk(x+1, y, EAST);
				walk_status = 1;
        src_x = x;
        src_y = y;
        player_node->action = WALK;
				player_node->tick_time = tick_time;
        set_coordinates(player_node->coordinates, x+1, y, EAST);
      } else set_coordinates(player_node->coordinates, x, y, EAST);
    }
	}

  if(player_node->action==STAND)
		if(key[KEY_LCONTROL]) {
			player_node->action = ATTACK;
			attack(get_x(player_node->coordinates), get_y(player_node->coordinates), get_direction(player_node->coordinates));
			player_node->tick_time = tick_time;
		}

  if(key[KEY_F1]) {
    save_bitmap("./Graphic/screenshot.bmp",double_buffer,NULL);
  } else if(key[KEY_F12]){
    sound.SetAdjVol( 1, 1, 1);
  } else if(key[KEY_F11]){
    sound.SetAdjVol(-1,-1,-1);
  }
	if(key[KEY_F5] && action_time==true) {
		if(player_node->action==STAND)
      action(2, 0);
		else if(player_node->action==SIT)
			action(3, 0);
		action_time = false;
	}

  if(key[KEY_ENTER]) {
    if(strcmp(speech, "")!=0) {
       chatlog.chat_send(char_info[0].name, speech);
       strcpy(speech,"");
    }
  }

  // Emotions, Skill dialog
	if(key_shifts & KB_ALT_FLAG && action_time == true) {
		if(player_node->emotion==0) {
      unsigned char emotion = 0;
      if(key[KEY_1])
        emotion = 1;
      else if(key[KEY_2])
        emotion = 2;
			else if(key[KEY_3])
        emotion = 3;
			else if(key[KEY_4])
        emotion = 4;
			else if(key[KEY_5])
        emotion = 5;
			else if(key[KEY_6])
        emotion = 6;
			else if(key[KEY_7])
        emotion = 7;
			else if(key[KEY_8])
        emotion = 8;
			else if(key[KEY_9])
        emotion = 9;
			else if(key[KEY_0])
        emotion = 10;
			if(emotion!=0) {
        WFIFOW(0) = net_w_value(0x00bf);
        WFIFOB(2) = emotion;
        WFIFOSET(3);
        action_time = false;
			}
		}

		if(key[KEY_S]) {
			show_skill_dialog = !show_skill_dialog;
			action_time = false;
		} else if(key[KEY_I]) {
			inventory.toggle();
			action_time = false;
		}
	}

  if(mouse_b&2) {
    if(!show_npc_dialog) {
      int npc_x = mouse_x/32+camera_x;
      int npc_y = mouse_y/32+camera_y;
      int id = find_npc(npc_x, npc_y);
      if(id!=0) {
        WFIFOW(0) = net_w_value(0x0090);
        WFIFOL(2) = net_l_value(id);
        WFIFOB(6) = 0;
        WFIFOSET(7);
      }
    }
  }

  if(key[KEY_ESC])state = EXIT;

}

/** Calculate packet length */
int get_packet_length(short id) {
    int len = get_length(id);
  if(len==-1)len = RFIFOW(2);
  return len;
}

/** Parse data received from map server into input buffer */
void do_parse() {
  unsigned short id;
  char *temp;
  char direction;
  NODE *node = NULL;
	PATH_NODE *pn;
  int len;

  // We need at least 2 bytes to identify a packet
  if(in_size>=2) {
    // Check if the received packet is complete
    while(in_size>=(len = get_packet_length(id = RFIFOW(0)))) {
      // Add infos to log file and dump the latest received packet
      char pkt_nfo[60];
      sprintf(pkt_nfo,"In-buffer size: %i Packet id: %x Packet length: %i",in_size,RFIFOW(0),len);
      /*log_hex("Packet", "Packet_ID", RFIFOW(0));
      log_int("Packet", "Packet_length", get_length(RFIFOW(0)));
      log_int("Packet", "Packet_in_size", RFIFOW(2));
      log_int("Packet", "In_size", in_size);
      FILE *file = fopen("packet.dump", "wb");
      for(int i=0;i<len;i++) {
        fprintf(file, "%x|%i|%c ", RFIFOB(i), RFIFOB(i), RFIFOB(i));
        if((i+1)%10==0)fprintf(file, "\n");
      }
      fclose(file);*/
			FILE *file = fopen("packet.list", "ab");
			fprintf(file, "%x\n", RFIFOW(0));
			fclose(file);

      // Parse packet based on their id
      switch(id) {
        // Received speech
        case 0x008d:
          temp = (char *)malloc(RFIFOW(2)-7);
          memset(temp, '\0', RFIFOW(2)-7);
          memcpy(temp, RFIFOP(8), RFIFOW(2)-8);
          node = find_node(RFIFOL(4));
          if(node!=NULL) {
            if(node->speech!=NULL) {
              free(node->speech);
              node->speech = NULL;
							node->speech_time = 0;
            }
            node->speech = temp;
            node->speech_time = SPEECH_TIME;
						node->speech_color = makecol(255, 255, 255);
            chatlog.chat_log(node->speech, BY_OTHER, gui_font);
          }
          break;
        case 0x008e:
        case 0x009a:
					if(RFIFOW(2)>4) {
						if(player_node->speech!=NULL) {
							free(player_node->speech);
							player_node->speech = NULL;
						}

						player_node->speech = (char *)malloc(RFIFOW(2)-3);
						memset(player_node->speech, '\0', RFIFOW(2)-3);
						memcpy(player_node->speech, RFIFOP(4), RFIFOW(2)-4);  // receive 1 byte less than expected, server might be sending garbage instead of '\0' /-kth5

						player_node->speech_time = SPEECH_TIME;
						player_node->speech_color = makecol(255, 255, 255);

						if(id==0x008e)
							chatlog.chat_log(player_node->speech, BY_PLAYER, gui_font);
						else
							chatlog.chat_log(player_node->speech, BY_GM, gui_font);
          }
				break;
        // Success to walk request
        case 0x0087:
					if(walk_status==1)
              walk_status = 2;
          break;
        // Add new being
        case 0x0078:
					if(find_node(RFIFOL(2))==NULL) {
            node = create_node();
            node->id = RFIFOL(2);
						node->speed = RFIFOW(6);
						if(node->speed==0)node->speed = 150; // Else division by 0 when calculating frame
            node->job = RFIFOW(14);
            memcpy(node->coordinates, RFIFOP(46), 3);
            add_node(node);
					}
          break;
        // Remove a being
        case 0x0080:
					node = find_node(RFIFOL(2));
					if(node!=NULL) {
						if(RFIFOB(6)==1) { // Death
              if(node->job>110) {
                node->action = MONSTER_DEAD;
                node->frame = 0;
                node->tick_time = tick_time;
              } else remove_node(RFIFOL(2));
						} else remove_node(RFIFOL(2));
					}
          break;
        // Player moving
        case 0x01d8:
        case 0x01d9:
          node = find_node(RFIFOL(2));
          if(node==NULL) {
            node = create_node();
            node->id = RFIFOL(2);
            node->job = RFIFOW(16);
            memcpy(node->coordinates, RFIFOP(46), 3);
            add_node(node);
						node->tick_time = tick_time;
						node->speed = RFIFOW(6);
          }
          break;
        // Monster moving
        case 0x007b:
				//case 0x01da:
          node = find_node(RFIFOL(2));
					if(node==NULL) {
						node = create_node();
						node->action = STAND;
						set_coordinates(node->coordinates, get_src_x(RFIFOP(50)), get_src_y(RFIFOP(50)), 0);
						node->id = RFIFOL(2);
						node->speed = RFIFOW(6);
						node->job = RFIFOW(14);
						add_node(node);
					}
          node->path = calculate_path(get_src_x(RFIFOP(50)),get_src_y(RFIFOP(50)),get_dest_x(RFIFOP(50)),get_dest_y(RFIFOP(50)));
					if(node->path!=NULL) {
						direction = 0;
						if(node->path->next) {
								if(node->path->next->x>node->path->x && node->path->next->y>node->path->y)direction = SE;
								else if(node->path->next->x<node->path->x && node->path->next->y>node->path->y)direction = SW;
								else if(node->path->next->x>node->path->x && node->path->next->y<node->path->y)direction = NE;
								else if(node->path->next->x<node->path->x && node->path->next->y<node->path->y)direction = NW;
								else if(node->path->next->x>node->path->x)direction = EAST;
								else if(node->path->next->x<node->path->x)direction = WEST;
								else if(node->path->next->y>node->path->y)direction = SOUTH;
								else if(node->path->next->y<node->path->y)direction = NORTH;
						}
						pn = node->path;
						node->path = node->path->next;
						free(pn);
            set_coordinates(node->coordinates, node->path->x, node->path->y, direction);
            node->action = WALK;
            node->tick_time = tick_time;
          }
          break;
        // Being moving
        case 0x01da:
          node = find_node(RFIFOL(2));
          if(node==NULL) {
            node = create_node();
            node->id = RFIFOL(2);
            node->job = RFIFOW(14);
            set_coordinates(node->coordinates, get_src_x(RFIFOP(50)), get_src_y(RFIFOP(50)), 0);
            add_node(node);
          }
          if(node->action!=WALK) {
          direction = get_direction(node->coordinates);
          node->action = WALK;
          if(get_dest_x(RFIFOP(50))>get_x(node->coordinates))direction = EAST;
          else if(get_dest_x(RFIFOP(50))<get_x(node->coordinates))direction = WEST;
          else if(get_dest_y(RFIFOP(50))>get_y(node->coordinates))direction = SOUTH;
          else if(get_dest_y(RFIFOP(50))<get_y(node->coordinates))direction = NORTH;
          else node->action = STAND;
					if(node->action==WALK)node->tick_time = tick_time;
          set_coordinates(node->coordinates, get_dest_x(RFIFOP(50)), get_dest_y(RFIFOP(50)), direction);
          }
          break;
        // NPC dialog
        case 0x00b4:
          if(!strstr(npc_text, RFIFOP(8))) {
            strcat(npc_text, RFIFOP(8));
            strcat(npc_text, "\n");
            show_npc_dialog = 1;
          }
          break;
        //Get the items
        case 0x01ee:
					for(int loop=0;loop<(RFIFOW(2)-4)/18;loop++)
            inventory.add_item(RFIFOW(4+loop*18), RFIFOW(4+loop*18+2), RFIFOW(4+loop*18+6));
          break;
        case 0x00a8: // could I use the item?
          // index RFIFOW(2)
          // succes or not RFIFOB(6);
          //if(RFIFOB(6))
          //  inventory.add_item(RFIFOW(2),RFIFOW(4));
          break;
        // Warp
        case 0x0091:
          memset(map_path, '\0', 480);
          append_filename(map_path, "./data/map/", RFIFOP(2), 480);
          if(load_map(map_path)) {
            empty();
            player_node = create_node();
						player_node->job = 0;
						player_node->action = STAND;
						player_node->frame = 0;
            player_node->type = ACTION_NODE;
						player_node->speed = 150;
						player_node->id = account_ID;
						set_coordinates(player_node->coordinates, RFIFOW(18), RFIFOW(20), 0);
            add_node(player_node);
						walk_status = 0;
            // Send "map loaded"
            WFIFOW(0) = net_w_value(0x007d);
            WFIFOSET(2);
            while(out_size>0)flush();
          } else error("Could not find map file");
          break;
				// Skill ...
				case 0x011a:
					break;
				case 0x01a4:
					break;
				// Action failed (ex. sit because you have not reached the right level)
				case 0x0110:
					CHATSKILL action;

					action.skill   = RFIFOW(2);
					action.bskill  = RFIFOW(4);
					action.unused  = RFIFOW(6);
					action.success = RFIFOB(8);
					action.reason  = RFIFOB(9);

					if(action.success != SKILL_FAILED &&
						action.bskill == BSKILL_EMOTE ) {
						printf("Action: %d/%d", action.bskill, action.success);
					}
					chatlog.chat_log(action, gui_font);
					break;
				// Update stat values
				case 0x00b0:
					switch(RFIFOW(2)) {
            case 5:
              char_info->hp = RFIFOW(4);
							break;
						case 6:
							char_info->max_hp = RFIFOW(4);
							break;
						case 7:
							char_info->sp = RFIFOW(4);
							break;
						case 8:
							char_info->max_sp = RFIFOW(4);
							break;
						case 11:
							char_info->lv = RFIFOW(4);
							break;
						}
					update_stats_dialog();
					if(char_info->hp==0) {
						ok("Message", "You're now dead, press ok to restart");
						WFIFOW(0) = net_w_value(0x00b2);
						WFIFOB(2) = 0;
						WFIFOSET(3);
					}
					break;
				// Stop walking
				/*case 0x0088:  // Disabled because giving some problems
					if(node = find_node(RFIFOL(2))) {
						if(node->id!=player_node->id) {
              node->action = STAND;
              node->frame = 0;
              set_coordinates(node->coordinates, RFIFOW(6), RFIFOW(8), get_direction(node->coordinates));
						}
					}
          break;*/
				// Damage, sit, stand up
				case 0x008a:
					switch(RFIFOB(26)) {
            case 0: // Damage
							node = find_node(RFIFOL(6));
							if(node!=NULL) {
                if(node->speech!=NULL) {
                  free(node->speech);
                  node->speech = NULL;
                  node->speech_time = SPEECH_TIME;
                }
                node->speech = (char *)malloc(5);
                memset(node->speech, '\0', 5);
								if(RFIFOW(22)==0) {
									sprintf(node->speech, "miss");
									node->speech_color = makecol(255, 255, 0);
								} else {
                  sprintf(node->speech, "%i", RFIFOW(22));
									if(node->id!=player_node->id)node->speech_color = makecol(0, 0, 255);
									else node->speech_color = makecol(255, 0, 0);
								}
                node->speech_time = SPEECH_TIME;
								if(RFIFOL(2)!=player_node->id) {
                  node = find_node(RFIFOL(2));
									if(node!=NULL) {
										if(node->job<10)
                      node->action = ATTACK;
										else node->action = MONSTER_ATTACK;
										node->frame = 0;
									}
								}
							}
              break;
            case 2: // Sit
            case 3: // Stand up
              node = find_node(RFIFOL(2));
							if(node!=NULL) {
                if(RFIFOB(26)==2)
                  node->action = SIT;
                else if(RFIFOB(26)==3)
                  node->action = STAND;
							}
              break;
					}
					break;
				// Status change
				case 0x00b1:
					switch(RFIFOW(2)) {
            case 1:
							char_info->xp = RFIFOL(4);
							break;
						case 2:
							char_info->job_xp = RFIFOL(4);
							break;
						case 20:
							char_info->zeny = RFIFOL(4);
							break;
						// case 16 and 17 missing
					}
					break;
				// Level up
				case 0x019b:
					if(RFIFOW(2)==0) {
						ok("Info", "Level up!");
					} else if(RFIFOW(2)==1) {
						ok("Info", "Job level up!");
					}
					break;
				// Emotion
				case 0x00c0:
					node = find_node(RFIFOL(2));
					if(node) {
						node->emotion = RFIFOB(6);
						node->emotion_time = EMOTION_TIME;
					}
					break;
				// Update skill values
				case 0x0141:
					switch(RFIFOL(2)) {
            case 0x000d:
							char_info->STR = RFIFOL(6) + RFIFOL(10); // Base + Bonus
							break;
            case 0x000e:
							char_info->AGI = RFIFOL(6) + RFIFOL(10);
							break;
            case 0x000f:
							char_info->VIT = RFIFOL(6) + RFIFOL(10);
							break;
            case 0x0010:
							char_info->INT = RFIFOL(6) + RFIFOL(10);
							break;
            case 0x0011:
							char_info->DEX = RFIFOL(6) + RFIFOL(10);
							break;
            case 0x0012:
							char_info->LUK = RFIFOL(6) + RFIFOL(10);
							break;
					}
					break;
				// Buy/Sell dialog
				case 0x00c4:
					if(show_npc_dialog==0) {
            show_npc_dialog = 2;
            current_npc = RFIFOL(2);
					}
					break;
				// Buy dialog
				case 0x00c6:
					n_items = (len-4)/11;
					show_npc_dialog = 3;
					for(int k=0;k<n_items;k++)
						add_buy_item(RFIFOW(4+11*k+9), RFIFOL(4+11*k));
					break;
				// Sell dialog
				case 0x00c7:
					n_items = (len-4)/10;
					show_npc_dialog = 4;
					for(int k=0;k<n_items;k++)
						add_sell_item(RFIFOW(4+10*k), RFIFOL(4+10*k+2));
					break;
				// Answer to buy
				case 0x00ca:
					if(RFIFOB(2)==0)
            chatlog.chat_log("Thanks for buying", BY_SERVER, gui_font);
					else
						chatlog.chat_log("Unable to buy", BY_SERVER, gui_font);
					break;
				// Answer to sell
				case 0x00cb:
					if(RFIFOB(2)==0)
            chatlog.chat_log("Thanks for selling", BY_SERVER, gui_font);
					else
						chatlog.chat_log("Unable to sell", BY_SERVER, gui_font);
					break;
				// Add item to inventory after you bought it
				case 0x00a0:
					inventory.add_item(RFIFOW(2), RFIFOW(6), RFIFOW(4));
					break;
					// Remove item to inventory after you sold it
				case 0x00af:
				printf("sell %i\n",-RFIFOW(4));
					inventory.change_quantity(RFIFOW(2),-RFIFOW(4));
					break;
				case 0x0119:
					sprintf(pkt_nfo, "%i %i %i %i", RFIFOL(2), RFIFOW(6), RFIFOW(8), RFIFOW(10));
					//alert(pkt_nfo,"","","","",0,0);
					break;
        // Manage non implemented packets
        default:
			// use when debug packets :) printf("%x\n",id);
          //alert(pkt_nfo,"","","","",0,0);
          break;
      }
      //alert(pkt_nfo,"","","","",0,0);

      RFIFOSKIP(len);
    }
  }
}