Subversion Repositories Games.Prince of Persia

Change log and history.

For recent changes, look at GitHub: https://github.com/NagyD/SDLPoP/commits/master

2012 July 28

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Released disassembly of PoP1 DOS: http://forum.princed.org/viewtopic.php?p=11347#p11347

2013 September 01

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I posted the room-drawing code (rewritten to C+SDL) in the forum.

http://forum.princed.org/viewtopic.php?f=68&t=3368

2013 December

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Started rewriting the further parts of the disassembly to C.

2014 January 03

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Released disassembly: http://forum.princed.org/viewtopic.php?p=14291#p14291

2014 January

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Most rewriting is done.

I started to find and fix the (many!) bugs.

Most of them resulted from the mis-reading of the disassembly.

2014 May 29

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Made the code compatible with GNU/Linux.

2014 July 11

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First public mention of the port.

http://forum.princed.org/viewtopic.php?p=14975#p14975

2014 July 21

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(version 1.00)

The first public release.

http://forum.princed.org/viewtopic.php?f=69&t=3512

2014 July 22

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(version 1.01)

Fixed bugs:

FIXED: Game is too fast for a short time after switching rooms. (Or restarting the level)

FIXED: Cutscenes fade too fast without COMPAT_TIMER

FIXED: Andrew: "New rooms take quite some time to be drawn, with the screen being blank in-between"

FIXED: If the mouse cursor leaves/enters the window, the game does as if the pressed keys were released.

New feature:

DONE: Hide cursor in fullscreen.

2014 July 23

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Fixed bugs:

FIXED: Keys did not repeat themselves.

	Needed for keys like "+" and "-".

FIXED: Starting a new game after winning a previous one makes all texts in the game blue instead of white.

2014 July 24

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Fixed bugs:

FIXED: When the screen is flashing, there may be black rectangles around the moving objects.

FIXED: Can't do level 7 trick.

2014 August 01

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New feature:

DONE: Support LEVELS.DAT

2014 August 04

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Fixed bugs:

FIXED: Can't interrupt fading of title screen.

FIXED: (Micro Palace, level 12) If kid is on the very left (in bottom row), then shadow is in wrong direction (looking left), and is constantly turning around.

2014 August 05

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(version 1.02)

(Contains all fixes listed above)

2014 August 06

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FIXED: (Micro Palace, level 4) After kid enters exit door, chomper bites kid.

FIXED: shadow is partially green when he is looking to the right

FIXED: (Prince of Wateria, level 5 room 3) (palace) Empty potion has red bubbles.

DONE: Support all .DAT files

2014 August 07

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(version 1.03)

(Contains all fixes listed above)

2014 August 08

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(version 1.04)

FIXED: Made compatible with 64-bit.

2014 August 10

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FIXED: If color 0 of a palette was not black, then it was not transparent.

FIXED: PNGs with alpha channel are drawn properly.

2014 August 11

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(version 1.05)

(Contains all fixes listed above)

2014 August 23

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FIXED: When fighting, parry-attack-parry-attack-... sequences stop when the guard attacks.

2014 August 24

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(version 1.06)

DONE: Sound timing (slow-fall and intro needs this)

DONE: Background color of texts in intro and ending

FIXED: prandom(): initialize from current time

2014 August 28

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(version 1.07)

FIXED: Under Linux, the game hanged randomly, because the main timer sometimes didn't generate its event.

FIXED: Removed the "Would play sound", "length =", "set_char_collision" and "Loading chtab" messages.

	Those were annoying and possibly slowed the game down.

FIXED: Level 12: If I enter the last room while the music is still "playing", then the game does not advance to level 13.

	And quits with error: Tried to load cutscene for level 26, not in 0..15

FIXED: Level 12->13 transition should not restore full HP or show level number.

FIXED: Displaying text is visibly slow on some systems.

2014 September 05

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FIXED: Pressing "K" on a skeleton crashes the game.

2014 September 22

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(version 1.08)

DONE: Digi sounds (only from DAT)

2014 September 23

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FIXED: The game quits in the intro, when Jaffar opens the door.

2014 September 25

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FIXED: When doing the level 5 trick (backing through the gate), the kid appears in the room to the *right* instead of left.

FIXED: Level 5: If you back out from the room where the guard is originally (but the screen is not switched), the kid might fall through the floor at the level door.

2014 September 28

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(version 1.09)

(Contains all fixes listed above)

Renamed the project to SDLPoP.

DONE: Added version number to the window title.

2014 October 11

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(version 1.10)

FIXED: Made the game compatible with Mac OS X, based on the suggestions by StaticReturn (from the Princed forum).

CHANGE: Now cheats are disabled by default unless the game is compiled in debug mode.

2014 October 27

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CHANGE: Added a font inside the exe. So the game can start without the data/font/ folder.

CHANGE: Changed project type to GUI. This means that the (empty) console window won't appear under Windows.

CHANGE: Changed "SDL" to "SDLPoP" in the window title.

2014 October 28

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(version 1.11)

(Contains all changes listed above)

2014 December 3

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FIXED: When doing Trick 95, the kid might bounce back from the wall a bit.

2014 December 20

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(version 1.12)

FIXED: Don't quit if there is no sound device available.

	Instead, just disable digi sound.

	This can happen, for example, on a Raspberry PI emulator (QEMU).

2015 February 13

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(version 1.13)

Added support for music.

Fixed some memory leaks.

2015 February 16

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(version 1.14)

FIXED: Changed project type to GUI in the "release" project, too.

FIXED: Ctrl-S did not turn off mixer sounds.

FIXED: Ctrl-S did not stop currently playing sounds.

DONE: Toggle fullscreen with alt-enter.

FIXED: If the game is in full screen, and I switch away (alt-tab) and back, most of the screen will be black, until it is redrawn.

2015 August 3

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(version 1.15)

General changes:

DONE: Migration from SDL1 to SDL2.

DONE: Game is now displayed at full resolution in fullscreen mode.

DONE: Window can now be resized.

DONE: Basic joystick support added.

DONE: Music files (*.ogg) are now bundled with the release.

CHANGE: Window is now displayed at 640 by 400 pixels by default.

CHANGE: Cleaned up harmless sound load errors.

CHANGE: Sound names are now read from file only once when sounds are loaded.

CHANGE: During loading of DAT files, read failures are now checked and reported.

CHANGE: More cleanly handle failures to read/write HOF file.

CHANGE: Improved reporting for known-failing loads.

CHANGE: Pass size of resource area instead of letting it get overridden.

CHANGE: The screen is now updated less frequently.

CHANGE: Tweaked timer behaviour. The game now attempts to correct for timer-related overhead somewhat, preventing screen updates lagging behind the monitor's refresh rate.

FIXED: Flashes are now displayed with a more consistent duration.

FIXED: Shift+L skipping cutscenes immediately is now prevented by a short delay timer.

FIXED: Fixed bug with flashes not repainting the screen upside down in flipped mode.

FIXED: Hardcoded font (hc_font) appeared as white rectangles.

New game additions and bug fixes:

DONE: Added quicksaving and quickloading (F6 to quicksave anywhere in a level, F9 to quickload).

- Also quicksave/quickload when shift is pressed

- Do not even attempt to quicksave after the kid has died

- Deny quicksave during the feather fall effect

- Allow quickloading from the title screen

FIXED: Prevented index to redraw_frames_above[] going out of bounds in set_redraw2(), triggered by loose tiles dropping out of the room from the rightmost column. This caused unpredictable behaviour, depending on the compiler.

FIXED: Fixed a bug where level doors would continue to open infinitely far when the global variable leveldoor_open has been modified due to special events or due to another level door being already open.

FIXED: Fixed the kid being able to enter closed level doors when there is another one open.

FIXED: Fixed a graphical bug occurring when the level start door is raised from the same room.

FIXED: Added optional fixes for a few gameplay quirks:

- Fix kid falling off the ledge when jumping after climbing two floors

- Fix "teleporting" four pixels further than necessary when climbing from firm ground while not in front of a wall

- Fix being able to survive lethal falls by jumping on top of a guard

- Fix triggering loose floors below by bumping into the wall above

- Enable the earlier fixes FIX_GATE_SOUNDS, FIX_TWO_COLL_BUG and FIX_INFINITE_DOWN_BUG.

- Fix temporarily standing on thin air when standing up on a falling loose tile

- Fix being able to press buttons through closed gates (Trick 1)

- Fix being able to grab ledges two stories down by bumping into a wall first

- Fix blood appearing on chompers when a skeleton is chomped

- Fix controls not being released during the drinking animation, causing unintended movement

- Add a way to crouch after climbing up (instead of climbing down again) by pressing down + forward

DONE: Increase the number of supported potion types to 32

- Quickloading is cancelled when a version string saved in QUICKSAVE.SAV does not match.

- Added rem_min and rem_tick to the quicksaved variables. The proposed penalty for quickloading is one minute subtracted from the saved remaining time.

FIXED: A drawing bug occurs when a loose tile is placed to the left of a potion (or sword).

- Fix guards following through closed gates

- Freeze time during the end level music

- Add option for debug cheats

Build changes:

DONE: Source code of the project has been added to GitHub.

CHANGE: Cleaned up and updated Makefile.

CHANGE: Added CMakeLists.txt for building using a CMake-based project model.

CHANGE: Added main.cpp and "extern C" declarations to allow compilation with a C++ compiler.

FIXED: Resolved warnings about multi-string literals by using an enum instead.

Refactorings:

CHANGE: Lots of things have changed with the switch to SDL2. To read about game migration from SDL1 to SDL2 in general, the SDL wiki provides a good overview at https://wiki.libsdl.org/MigrationGuide

CHANGE: The key_states[] array now has a size of SDL_NUM_SCANCODES and is indexed by SDL scancodes.

CHANGE: Modifier keys are now handled cleanly.

CHANGE: Removed unnecessary stuff (leftovers from the disassembly, or debug statements)

CHANGE: Many identifiers have been changed to better ones.

CHANGE: Added named enums for sound IDs, char_type.sword, timer IDs, colors, character frames and sequences.

CHANGE: Replaced a number of magic numbers in the code with their enum equivalents.

CHANGE: Sequence table deobfuscation.

- Fix seqtbl not compiling correctly in release mode

License:

Added GPLv3 license (2015 June 27).

2016 January 1

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(version 1.16)

DONE: Added ability to view or record replays. (See Readme.txt for information on how to use)

DONE: Added changing options without recompiling: use SDLPoP.ini to configure various options.

DONE: The game now prompts whether to enable game fixes and enhancements. (See Readme.txt or the forum topic for further details)

DONE: Gameplay fix added for safe landing on spikes (Trick 65).

DONE: Demo mode can now be used (use the command-line parameter "demo"): in this mode, only the first two levels will be playable, and quotes from magazine reviews will be displayed.

DONE: Added ability to draw fake and invisible walls/floors. (See forum topic for details)

DONE: Added support for 1.3-format wave sounds.

DONE: Added support for alternate level colors. (1.3)

DONE: Added the dialog box in the copy protection level.

CHANGE: Changed joystick cutoff point to 30000.

CHANGE: Added index and NULL checks to chtab reads.

CHANGE: Improved the gameplay fix for guards following through closed gates by checking for can_guard_see_kid == 2. Also added a test level.

CHANGE: Added collision data, Char and Opp to the list of quicksaved variables.

CHANGE: Removed Makefile.win from the Git repository.

CHANGE: Added !=NULL to check_param() calls.

CHANGE: Build fixes.

FIXED: Fixed crash upon drawing characters that have no glyphs, such as newline/carriage return.

FIXED: The open potion now gets placed correctly in the copy protection level.

FIXED: Fixed interrupting of fades and the speed of fading in cutscenes.

FIXED: Changed vertical centering of text to match the original.

FIXED: Fixed the order of numbers in the Shift+C cheat.

FIXED: Fixed the demo quotes disappearing too soon.

DONE: Added option to start fullscreen, change window dimensions in the INI file.

DONE: Better INI processing & new custom gameplay options.

FIXED: Fixed wall connections not working for fake tiles.

DONE: New options: max hitpoints, first & last level where saving is allowed.

DONE: Added per-level settings to INI and INI processing.

DONE: Added support for named values in the INI file.

DONE: Improved gamepad support.

DONE: Added support for displaying the game with the original 4:3 aspect ratio.

2017 February 5

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(version 1.17)

General changes:

CHANGE: Moved source to src/. (That is, merged the with-folders branch into master.)

DONE: Moved OSX documentation to Readme.txt. Upgraded information there. Removed TODO text for the SDL2 port.

DONE: Added sources and fake tiles to Readme.

DONE: Added Markus installation method with brew install for OSX to the readme.

CHANGE: Updated OSX make command in Readme.

DONE: Updated forum link in Readme.

DONE: Added some contributors and thanks to the Readme.

DONE: Removed some old unneeded files.

DONE: Added comments to explain the available options in SDLPoP.ini

DONE: Add info on the "mod" command line option to doc/Readme.txt

DONE: Allow opening DAT files from the data/ directory as well; Moved DAT files to data/ to clean up the main folder.

CHANGE: Folders in the data/ directory no longer have the .DAT extension, so they can coexist with .DAT files.

FIXED: Removed Dev-C++ note from Linux Makefile.

FIXED: Use Mix_Music instead of Mix_Chunk to play music files. This reduces loading time. (contributed by @usineur)

FIXED: Fixed Dávid's name in the header comments.

DONE: Added an icon.

Miscellaneous game additions, changes, bug fixes:

CHANGE: Let time just run when quickloading immediately after quicksave

FIXED: Changed the RGB/BGR hack: check whether SDL2 bug occurs before applying RGB24 workaround.

FIXED: Fixed fake tiles randomly appeared in place of the disappearing sword.

FIXED: Fixed crashing on certain custom DAT files.

FIXED: Don't crash if some (or all) data files are missing.

CHANGE: Increased sound buffer size to remove noise.

CHANGE: Increased sound output settings to CD quality. (That is: 44100 Hz, 16-bit, Stereo.)

FIXED: Audio: Changed 16-bit to signed. (@vanfanel wrote this is needed on the Raspberry PI.)

FIXED: Fixed bug (and compiler warning) in redraw_at_cur_mob(). (Reported by @petervas.)

CHANGE: Change default of use_fixes_and_enhancements to false

FIXED: Don't repeat Alt+Enter.

FIXED: Alt+Enter should not un-pause the game.

CHANGE: Debug timer: display in top left corner, toggle with T

FIXED: Added a way to enable debug cheats: use command-line parameter "debug"

FIXED: Do not accept filenames as valid command-line parameters in check_param()

FIXED: Reduced flickering when text is drawn.

DONE: Added info screen shown at startup, with some explanation about SDLPoP.

FIXED: Fixed quickload penalty being applied even after time has stopped (after Jaffar has been killed)

FIXED: Fixed guards sometimes turning around immediately after quickloading (because is_guard_notice is not set to zero)

FIXED: Silenced warnings being printed about image 255, after entering an exit door.

FIXED: Fixed graphics bug with SDL 2.0.5 (contributed by @zaps166)

DONE: Added command-line parameter --version, -v: Display SDLPoP version and quit.

DONE: Added command-line parameter --help, -h: Display help and quit (points to the Readme).

DONE: Added command-line parameter seed=number: Set initial random seed, for testing.

Improved controller support:

DONE: Improved controller support; migrated to SDL_GameController API (reported by @EndeavourAccuracy).

DONE: Implemented two settings for joystick control: horizontal-only (default; idea and original implementation by @EndeavourAccuracy) and all-directional.

CHANGE: Controller: Remapped Quit to Start (was B).

DONE: Added haptic feedback (when the kid is hurt) for controllers with a rumble motor.

Support for playing mods/custom levelsets:

DONE: Added ability to organise mods into their own directories

DONE: Use a custom configuration file (mod.ini) for each mod

DONE: Allow choosing a levelset from the command line; usage: prince mod "Mod Name"

CHANGE: Use a separate Hall of Fame file when playing a custom levelset

CHANGE: Use a separate QUICKSAVE.SAV / PRINCE.SAV when playing a custom levelset

New customization/modding features:

DONE: CusPop option: start upside down

DONE: CusPop option: start in blind mode (slightly buggy)

DONE: CusPop option: set level before which the copy protection level appears

DONE: CusPop option: set up edges of the level

DONE: CusPop option: enable dungeon WDA in palace environment

DONE: Allow disabling the time limit completely (by setting 'start_minutes_left' to -1 in SDLPoP.ini)

DONE: When time is unlimited, show how much time has passed instead of how much time is remaining

DONE: CusPop option: change the hard-coded color palette

DONE: CusPop option: change the first level (starting level)

DONE: CusPop option: skip title sequence

DONE: CusPop option: set up effect of Shift+L in non-cheat mode

DONE: CusPop option: set up cutscenes

Replay improvements:

CHANGE: Replays get saved to the replays/ directory, have more recognizable names, and are played back in reverse creation order.

DONE: Allow changing the folder where replays are kept.

CHANGE: The replay format was changed -- older replays will no longer work!

CHANGE: Replay format: added magic number 0x50 0x31 0x52 ("P1R")

CHANGE: Replay format: replaced version strings with class, version and deprecation numbers that can be used to determine whether a replay is compatible.

CHANGE: Replay format: added the time of the recording (Unix time) to the replay format.

CHANGE: Replay format: added the name of the program that created the replay to the replay format.

CHANGE: Replay format: stored replay options are now split up into several sections.

CHANGE: Replay format: use 32-bit sizes independent of platform (32 or 64 bits).

CHANGE: Gameplay options are now stored differently in replays.

FIXED: Incompatible replays will be skipped in the cycle order.

FIXED: Added more informative error messages if a replay is incompatible.

FIXED: Fixed being unable to unpause while replaying.

FIXED: Fixed replays running out of sync when the end of a temporary effect is triggered by the music stopping (level 1 start, feather fall).

FIXED: Fixed several bugs that could cause crashes when a replay file is loaded.

DONE: Replay: show error message in a dialog box if replay loading failed.

DONE: Replay: stop the replay upon reaching the Princess room.

CHANGE: Don't play end level music while recording or replaying. (Reduces waiting time and improves reproducibility.)

DONE: Added a save dialog for replays. This replaces the automatically generated filenames for replays. Pressing Escape discards a replay.

DONE: Replay: start recording immediately if Ctrl+Tab pressed on the title screen.

DONE: When trying to quickload while recording, show the 'save replay' dialog.

FIXED: Fixed replay reproducibility across multiple levels. (Preserve the random seed to prevent going out-of-sync.)

DONE: Press F or Shift+F to skip forward through replays (F: skip to next room, Shift+F: skip to next level).

DONE: Added command-line option for validating replays, usage: prince validate "replays/replay.p1r"

Fixes for gameplay and drawing bugs, that are also present in the original Prince of Persia for DOS:

DONE: Added remembering guard hitpoints. (optional fix/enhancement)

FIXED: Fixed the kid being able to glide sideways through the top sections of walls/tapestries while in freefall.

FIXED: Fixed the kid dropping through tiles when dropping down from a tapestry.

FIXED: Fixed the landing animation aborting when landing against a gate or tapestry+floor instead of a wall.

FIXED: Fixed crashing from guards on level 14.

FIXED: Improved fix for "standing on thin air" bug.

FIXED: Fixed new falling bug caused by "glide through wall" fix, as well as a second wall glitch.

FIXED: Fixed unintended sword strike immediately after drawing sword.

FIXED: Fixed retreating out of a room without the room actually changing.

FIXED: Fixed running jump through tapestry.

DONE: Added test level for jumping through tapestry.

FIXED: Fixed guards being pushed into walls.

FIXED: Fixed jumping through a wall above a closed gate.

FIXED: Alternate fix for drawing bug when gates are stacked on top of each other.

FIXED: Alternate fix for drawing bug when climbing up to a floot with a big pillar top behind.

FIXED: Fixed chompers not starting when grabbing a ledge.

FIXED: Fixed offscreen guards not reappearing in adjacent rooms.

FIXED: Fixed feather fall effect being interrupted by a level door opening.

FIXED: Removed audible 'click' after the swinging sword sound. (contributed by @zaps166)

FIXED: Fixed unintended movement after putting the sword away (because controls do not get released properly).

Build changes, source code, refactoring:

DONE: OSX port upgraded from SDL to SDL2. Mixer library added in makefile and documentation. Tested.

DONE: Merged both makefiles. Now make is fully portable.

CHANGE: Updated CMakeLists.txt

FIXED: Removed duplicate const to avoid warnings in default gcc settings on OSX. Commented an always-true if.

DONE: Removed unneeded libraries from Dev-C++ projects.

DONE: Add OSX build configuration for CMake

FIXED: config: compile with USE_MIXER undefined

FIXED: Added extern to all variables in data.h.

FIXED: Removed duplicate definition of timer_stopped.

DONE: Also changed 0 to timer_0 where appropriate.

DONE: Visual C++ (NMake) support

CHANGE: Changed COUNT to sizeof in memset.

DONE: Added missing color ids, using the color names of the default EGA palette

CHANGE: Set minimum CMake version required to 2.8

DONE: Added some comments in land().

FIXED: Added range checks in load_frame().

FIXED: Added newline at the end of error messages that didn't already have one.

FIXED: Make NMakefile and unistd_win.h non-executable

DONE: Add optimization level (O2) to Makefile, silence uninitialized warning

DONE: Remove CMakeLists.txt in root directory

DONE: Added optimization (-O2) to Dev-C++ release project as well.

DONE: Add .editorconfig

DONE: Added maximum path length macro POP_MAX_PATH set to 256

CHANGE: Refactor so that HOF path is obtained from get_hof_path()

CHANGE: Refactor: removed options_type (replacement: options are stored using SDL_RWops streams).

DONE: Added new exceptions to .gitignore.

FIXED: Ignore replay options in SDLPoP.ini if USE_REPLAY is not defined

DONE: Added -std=gnu99 to the Dev-C++ project files.

(no release date yet)

=================

(upcoming version)

FIXED: Fixed allow_triggering_any_tile hack to work with stuck-closed chompers.

DONE: Linux: Added .desktop file and make install/uninstall.

DONE: Added option to enable lighting.

ADDED: You can make screenshots, both manually with a key or automatically from the command line.

ADDED: You can also make screenshots of the whole level.

ADDED: Whole-level screenshots can optionally show extra info, like door events.

ADDED: You can also start level 0 (demo) and level 15 (potions) from the command line.

ADDED: Automatically switch to keyboard or joystick/gamepad mode if there is input from that device.

FIXED: Fixed indentation (use tabs) and alignment (use spaces).

FIXED: Fixed compiling with MSVC and improve build scripts.

FIXED: On Windows, use Unicode/UTF-8 (instead of the current codepage) for replay filenames and directory names.

FIXED: Fixed the quicksave note in the splash: save = F6, load = F9.

FIXED: Ctrl+S now also mutes music.

FIXED: Fixed implicit-function-declaration warnings. (implemented by @Rondom)

DONE: Use 8-bit audio samples as a workaround if using older (buggy) SDL2 versions (older than 2.0.4).

FIXED: Removed redefinition of SDL_COMPILE_TIME_ASSERT.

FIXED: Add (back) SDL_Joystick interface because not all joysticks are SDL_Controller compatible. (implemented by @vanfanel)

DONE: Convert waves to mixer sounds when they are loaded, not when they are first played. (suggested by @vanfanel)

FIXED: Updated Readme.txt - fix macOS instructions.

DONE: Added option to force pixel perfect scaling (integer scale factors).

FIXED: Show level number when cycling between replays with Tab.