Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
branch: master
Fetching contributors…

Cannot retrieve contributors at this time

file 717 lines (573 sloc) 15.281 kb
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

#include <time.h>
#include "nx.h"
#include "replay.h"
#include "profile.h"
#include "replay.fdh"
using namespace Replay;

#define REPLAY_MAGICK 0xC322
static ReplayRecording rec;
static ReplayPlaying play;

static int next_ffwdto = 0;
static int next_stopat = 0;
static bool next_accel = false;
extern int flipacceltime;

// begin recording a replay into the given file,
// creating the save-profile section from the current game state.
bool Replay::begin_record(const char *fname)
{
FILE *fp;
Profile profile;

end_record();
memset(&rec, 0, sizeof(rec));

stat("begin_record('%s')", fname);

// grab a savefile record of the game state and write it at the start of the file
// just like a regular profile.dat.
if (game_save(&profile)) return 1;
if (profile_save(fname, &profile)) return 1;

fp = fileopen(fname, "r+");
if (!fp)
{
staterr("begin_record: failed to open file %s", fname);
return 1;
}

fseek(fp, PROFILE_LENGTH, SEEK_SET); // seek to end of profile data

rec.hdr.magick = REPLAY_MAGICK;
rec.hdr.randseed = getrand();
rec.hdr.locked = false;
rec.hdr.total_frames = 0;
rec.hdr.createstamp = (uint64_t)time(NULL);
rec.hdr.stageno = game.curmap;
memcpy(&rec.hdr.settings, &normal_settings, sizeof(Settings));

fwrite(&rec.hdr, sizeof(ReplayHeader), 1, fp);

rec.fp = fp;
seedrand(rec.hdr.randseed);

fputl('MARK', fp);
rec.fb.SetFile(fp);
rec.fb.SetBufferSize(256);
rec.fb.Dump();
return 0;
}

bool Replay::end_record()
{
if (!IsRecording())
return 1;

// flush final RLE run
write_record(rec.lastkeys, rec.runlength, &rec.fb);
rec.runlength = 0;
rec.fb.Flush();
rec.fb.SetFile(NULL);

fputc('!', rec.fp);
fputl('STOP', rec.fp);

// go back and save the header again so we have total_frames correct.
fseek(rec.fp, PROFILE_LENGTH, SEEK_SET);
fwrite(&rec.hdr, sizeof(ReplayHeader), 1, rec.fp);
fclose(rec.fp);

stat("end_record(): wrote %d frames", rec.hdr.total_frames);
memset(&rec, 0, sizeof(rec));
return 0;
}

/*
void c------------------------------() {}
*/

// load the save-game contained with the given replay and begin playback.
bool Replay::begin_playback(const char *fname)
{
FILE *fp;
Profile profile;

end_playback();
memset(&play, 0, sizeof(play));

stat("begin_playback('%s')", fname);

if (profile_load(fname, &profile))
return 1;

fp = fileopen(fname, "rb");
if (!fp)
{
staterr("begin_playback: failed to open file %s", fname);
return 1;
}

fseek(fp, PROFILE_LENGTH, SEEK_SET); // seek to end of profile data
fread(&play.hdr, sizeof(ReplayHeader), 1, fp);

if (play.hdr.magick != REPLAY_MAGICK)
{
staterr("begin_playback: magick mismatch on file '%s' (%x shouldbe %x)", fname, play.hdr.magick, REPLAY_MAGICK);
return 1;
}

// undo settings we don't want to apply during the replay
memcpy(&replay_settings, &play.hdr.settings, sizeof(Settings));
replay_settings.resolution = normal_settings.resolution;
replay_settings.sound_enabled = normal_settings.sound_enabled;
replay_settings.music_enabled = normal_settings.music_enabled;

game_load(&profile);
seedrand(play.hdr.randseed);

if (fgetl(fp) != 'MARK')
{
console.Print("Replay fail MARK");
return 1;
}

// debug stuff for replaying at startup from main.cpp
play.ffwdto = next_ffwdto;
next_ffwdto = 0;

play.stopat = next_stopat;
next_stopat = 0;

play.ffwd_accel = next_accel;
next_accel = 0;

play.fp = fp;
// dump_replay();
return 0;
}

bool Replay::end_playback()
{
if (!IsPlaying()) return 1;

fclose(play.fp);
play.fp = NULL;

memset(inputs, 0, sizeof(inputs));
play.termtimer = 110;

return 0;
}

/*
void c------------------------------() {}
*/

// run record and playback.
// * inputs states can be recorded to the file.
// * inputs can be injected into the array from the file.
void Replay::run()
{
//debug("%d %d", IsPlaying(), IsRecording());

if (IsPlaying())
{
settings = &replay_settings;
run_playback();
}
else
{
settings = &normal_settings;
}

if (IsRecording())
run_record();
}


// record incoming inputs states to the record_fp.
void Replay::run_record()
{
rec.hdr.total_frames++;
uint32_t keys = EncodeBits(inputs, INPUT_COUNT);

if (keys != rec.lastkeys)
{
if (rec.runlength != 0)
{
write_record(rec.lastkeys, rec.runlength, &rec.fb);
rec.runlength = 0;
}

rec.lastkeys = keys;
}

rec.runlength++;
}

static void Replay::run_playback()
{
play.elapsed_frames++;

if (play.stopat && play.elapsed_frames >= play.stopat)
{
end_playback();
return;
}

if (play.ffwdto && play.elapsed_frames < play.ffwdto)
{
game.ffwdtime = 2;
if (play.ffwd_accel)
flipacceltime = 2; // global variable from main; disables screen->Flip()
}

// RLE decoding
if (play.runlength == 0)
{
if (read_record(&play.keys, &play.runlength, play.fp))
{
end_playback();
play.keys = 0;
return;
}

play.elapsed_records++;
}

play.runlength--;

debug("keys: %08x", play.keys);
debug("runlength: %d", play.runlength);
debug("frame: %d", play.elapsed_frames);
debug("record: %d", play.elapsed_records);
//debug("frames left: %d", (play.hdr.total_frames - play.elapsed_frames));

bool keys[INPUT_COUNT];
DecodeBits(play.keys, keys, INPUT_COUNT);

// which recorded inputs should be applied
static const int list[] =
{
LEFTKEY, RIGHTKEY, UPKEY, DOWNKEY,
JUMPKEY, FIREKEY, PREVWPNKEY, NEXTWPNKEY,
INVENTORYKEY, MAPSYSTEMKEY,
DEBUG_MOVE_KEY, DEBUG_GOD_KEY, DEBUG_FLY_KEY,
-1
};

for(int i=0;list[i] != -1;i++)
{
int key = list[i];
inputs[key] = keys[key];
}

return;
}

/*
void c------------------------------() {}
*/

static void write_record(uint32_t keys, uint32_t runlength, FileBuffer *fb)
{
fb->Write8('[');
fb->Write32(keys);
fb->Write8(':');
fb->Write32(runlength);
fb->Write8(']');
}

static bool read_record(uint32_t *keys, uint32_t *runlength, FILE *fp)
{
char ch = fgetc(fp);
if (ch == '!') return REC_END;

if (feof(fp))
{
console.Print("unexpected end of file");
return REC_ERR;
}

if (ch != '[')
{
console.Print("replay field fail [");
return REC_ERR;
}

*keys = fgetl(fp);

if (fgetc(fp) != ':')
{
console.Print("replay field fail :");
return REC_ERR;
}

*runlength = fgetl(fp);

if (fgetc(fp) != ']')
{
console.Print("replay field fail ]");
return REC_ERR;
}

return REC_OK;
}

/*
void c------------------------------() {}
*/

// draw the playback status "tape"
void Replay::DrawStatus()
{
static const int TAPE_CHARS = 10;
static const int x = 4;
char buf[40];
int tapepos;

if (!IsPlaying() || game.paused)
{
if (play.termtimer > 0)
{
play.termtimer--;
const char *str = ((play.termtimer % 40) >= 20) ? "> PLAYBACK TERMINATED <":"> <";

int y = (SCREEN_HEIGHT - 3) - (GetFontHeight() * 2);
font_draw_shaded(x, y, str, 0, &greenfont);
}

return;
}

// ask for one more char in length than we actually have, this makes it
// so the tape gets all-the-way filled up near the end (otherwise, the only time
// it'd be fully filled is on the very last frame, so we wouldn't ever see it).
tapepos = GetPlaybackPosition(TAPE_CHARS + 1);
if (tapepos > TAPE_CHARS) tapepos = TAPE_CHARS;

// > PLAY : 00000
// [>>>>>>>>>>]
buf[0] = '['; buf[TAPE_CHARS+1] = ']'; buf[TAPE_CHARS+2] = 0;
memset(&buf[1], ' ', TAPE_CHARS);
memset(&buf[1], '>', tapepos);

int y = (SCREEN_HEIGHT - 3) - GetFontHeight();
font_draw_shaded(x, y, buf, 0, &greenfont);

const char *mode = ((play.elapsed_frames % 40) < 20) ? "PLAY" : " ";
if (game.ffwdtime) mode = "FFWD";
sprintf(buf, "> %s : %05d", mode, play.elapsed_frames);

y -= GetFontHeight();
font_draw_shaded(x, y, buf, 0, &greenfont);
}

/*
void c------------------------------() {}
*/

// called from main after a game is loaded or a new game is begun.
void Replay::OnGameStarting()
{
stat("Replay::OnGameStarting()");

if (!IsPlaying())
begin_record_next();
}


bool Replay::begin_record_next()
{
int slot = GetAvailableSlot();
if (slot == -1)
{
stat("begin_record_next: all slots locked; not recording a replay");
return 1;
}

stat("begin_record_next: starting record to slot %d", slot);
return begin_record(GetReplayName(slot));
}


static int Replay::GetAvailableSlot(void)
{
ReplaySlotInfo slotinfo[MAX_REPLAYS];
ReplaySlotInfo *unlocked[MAX_REPLAYS];
int i, numUnlocked;

// get info for all slots.
// try to find a slot that isn't used yet, if we can, take the first one.
for(i=MAX_REPLAYS-1;i>=0;i--)
{
GetSlotInfo(i, &slotinfo[i]);
//stat("Read status of slot %d: [ %d ]", i, slotinfo[i].status);

if (slotinfo[i].status == RS_UNUSED)
return i;
}

// nope, the easy way out didn't work because all the replay slots
// have at least something in them. so, get a list of all unlocked files.
numUnlocked = 0;
for(i=0;i<MAX_REPLAYS;i++)
{
if (slotinfo[i].status == RS_UNLOCKED)
unlocked[numUnlocked++] = &slotinfo[i];
}

// if the unlocked list has 0 entries then all slots are both in use and locked.
// we fail. return.
if (numUnlocked == 0)
return -1;

// delete the file in the highest-numbered slot.
remove(unlocked[--numUnlocked]->filename);
unlocked[numUnlocked]->status = RS_UNUSED;

// assign new filenames to all the files in the list, working downward
// from the highest-numbered slot. The going backwards also ensures there
// can't be any conflicts while we're in the middle of this.
int nextslot = (MAX_REPLAYS - 1);
for(i=numUnlocked-1;i>=0;i--)
{
// skip over locked slots
while(slotinfo[nextslot].status == RS_LOCKED)
nextslot--;

const char *newfilename = GetReplayName(nextslot);
rename(unlocked[i]->filename, newfilename);
strcpy(unlocked[i]->filename, newfilename);

nextslot--;
}

// now take the first unused slot. we're sure that there is one this time.
for(i=0;i<MAX_REPLAYS;i++)
{
if (!file_exists(GetReplayName(i)))
return i;
}

staterr("GetAvailableSlot: deleted one but still none available???");
return -1;
}


/*
void c------------------------------() {}
*/

// returns locked/unlocked/available status and filename info for the given replay slot.
void Replay::GetSlotInfo(int slotno, ReplaySlotInfo *slot)
{
GetReplayName(slotno, slot->filename);

if (LoadHeader(slot->filename, &slot->hdr) || \
slot->hdr.magick != REPLAY_MAGICK)
{
slot->status = RS_UNUSED;
slot->filename[0] = 0;
}
else
{
slot->status = (slot->hdr.locked) ? RS_LOCKED : RS_UNLOCKED;
}
}


const char *GetReplayName(int slotno, char *buffer)
{
if (!buffer) buffer = GetStaticStr();
sprintf(buffer, "replay/rep%d.dat", slotno);
return buffer;
}

bool Replay::LoadHeader(const char *fname, ReplayHeader *hdr)
{
FILE *fp;

fp = fileopen(fname, "rb");
if (!fp)
{
staterr("LoadHeader: can't open file '%s'", fname);
return 1;
}

fseek(fp, PROFILE_LENGTH, SEEK_SET); // seek to end of profile data
fread(hdr, sizeof(ReplayHeader), 1, fp);

fclose(fp);
return 0;
}

bool Replay::SaveHeader(const char *fname, ReplayHeader *hdr)
{
FILE *fp;

fp = fileopen(fname, "r+");
if (!fp)
{
staterr("SaveHeader: can't open file '%s'", fname);
return 1;
}

fseek(fp, PROFILE_LENGTH, SEEK_SET); // seek to end of profile data
fwrite(hdr, sizeof(ReplayHeader), 1, fp);

fclose(fp);
return 0;
}

/*
void c------------------------------() {}
*/

// converts a framecount value into a textual total time.
void Replay::FramesToTime(int framecount, char *buffer)
{
int mins, secs;

secs = (framecount / GAME_FPS);
mins = (secs / 60);
secs = (secs % 60);
if (mins > 99) mins = 99;

sprintf(buffer, "[%02d:%02d]", mins, secs);
}

// returns a value between 0 and max which is like a percentage
// of where we are on the "tape" (only works during playback).
int Replay::GetPlaybackPosition(int max)
{
if (play.elapsed_frames >= play.hdr.total_frames)
return max;

double ratio = ((double)max / (double)play.hdr.total_frames);
return (int)((double)play.elapsed_frames * ratio);
}

/*
void c------------------------------() {}
*/

bool Replay::IsRecording()
{
return (rec.fp != NULL);
}

bool Replay::IsPlaying()
{
return (play.fp != NULL);
}

void Replay::close()
{
end_record();
end_playback();
}

/*
void c------------------------------() {}
*/

void Replay::set_ffwd(int frame, bool accel)
{
if (IsPlaying())
{
play.ffwdto = frame;
play.ffwd_accel = accel;
}
else
{
next_ffwdto = frame;
next_accel = accel;
}
}

void Replay::set_stopat(int frame)
{
if (IsPlaying())
play.stopat = frame;
else
next_stopat = frame;
}

/*
void c------------------------------() {}
*/

// shoves an array of bool values up to 32 entries long into a uint32.
static uint32_t Replay::EncodeBits(bool *values, int nvalues)
{
uint32_t result = 0;
uint32_t mask = 1;

for(int i=0;i<nvalues;i++)
{
if (values[i]) result |= mask;
mask <<= 1;
}

return result;
}

// pulls apart a uint32 created by EncodeBits back into a bool array.
void Replay::DecodeBits(uint32_t value, bool *array, int len)
{
uint32_t mask = 1;
int i;

for(i=0;i<len;i++)
{
array[i] = (value & mask) ? 1 : 0;
mask <<= 1;
}
}

/*
void c------------------------------() {}
*/

static void dump_replay()
{
stat("=== Header ===");
stat("magick: %04x (%s)", play.hdr.magick, (play.hdr.magick == REPLAY_MAGICK) ? "correct" : "not correct");
stat("randseed: %08x", play.hdr.randseed);
stat("locked: %d", play.hdr.locked);
stat("total_frames: %d (%d secs)", play.hdr.total_frames, play.hdr.total_frames / 50);
stat("stageno: %d (%s)", play.hdr.stageno, map_get_stage_name(play.hdr.stageno));
stat("createstamp: %010llx", play.hdr.createstamp);
stat("=== End Header ===");
stat("");

stat("resolution: %d", play.hdr.settings.resolution);
stat("last_save_slot: %d", play.hdr.settings.last_save_slot);
stat("multisave: %d", play.hdr.settings.multisave);
/*int resolution;
int last_save_slot;
bool multisave;
bool files_extracted;
bool show_fps;
bool displayformat;
bool enable_debug_keys;
bool sound_enabled;
int music_enabled;
bool instant_quit;
bool emulate_bugs;
bool no_quake_in_hell;
bool inhibit_fullscreen;
bool skip_intro;*/

//exit(1);

/*stat("Inputs:");
for(int i=0;i<INPUT_COUNT;i++)
{
stat(" %08x %08x", play.hdr.settings.input_mappings[i], input_get_mapping(i));
}*/

fseek(play.fp, ftell(play.fp) - 0x2b, SEEK_SET); // 0x6a9
stat("First Read %08x", fgetl(play.fp));
stat("Starting read at offset %04x", ftell(play.fp));
//exit(1);

//exit(1);
//int offset = 1;
//fseek(play.fp, ftell(play.fp)+offset, SEEK_SET);

int total_frames = 0;
int record = 0;
uint32_t lastkeys = 0xffffffff;
while(!feof(play.fp))
{
uint32_t keys = fgetl(play.fp);
uint32_t runlength = fgetl(play.fp);
if (runlength == 0xffffffff || feof(play.fp)) break;
total_frames += runlength;

stat("%04d len %08x: keys %08x offset %08x", record++, runlength, keys, ftell(play.fp)-8);

if (keys == lastkeys)
{
staterr(" -- impossible key repeat");
if (runlength < 0x200000) break;
}

if (runlength >= 0x200000)
{
staterr(" -- bogus runlength %08x", runlength);
break;
}

lastkeys = keys;
}

//total_frames--;
stat("total frames count: %d", total_frames);
stat("frames reported: %d", play.hdr.total_frames);
exit(1);
}
Something went wrong with that request. Please try again.