Sonic Robo Blast 2

Sonic Robo Blast 2 is a 3D Sonic the Hedgehog fangame based on a modified version of Doom Legacy.

Dependencies

• SDL2 (Linux/OS X only)
• SDL2-Mixer (Linux/OS X only)
• libupnp (Linux/OS X only)
• libgme (Linux/OS X only)
• libopenmpt (Linux/OS X only)

Compiling

See SRB2 Wiki/Source code compiling

Disclaimer

Sonic Team Junior is in no way affiliated with SEGA or Sonic Team. We do not claim ownership of any of SEGA's intellectual property used in SRB2.

I (Sparkette) take no responsibility for any damage to your save data or computer. In addition, while this version does allow you to use arbitrary mods in multiplayer games, I don't condone doing so in a manner that gives you an unfair advantage or otherwise violates the rules of the server you're playing on. If you choose to do so anyway, you take sole responsibility for the consequences of your actions.

About this fork

This is my (Sparkette) personal version, containing some changes I made for my own purposes, mainly related to console commands. I'm putting this out here in case anyone else wants to use it, but be aware, a lot of these changes are done in a quick-and-dirty way, and there are some bugs which I may or may not fix when and if I get tired of dealing with them. That said, here are the changes I've made:

• The loadstring function has been added to Lua.

• I've included a script, repl.lua, which uses loadstring to provide a REPL-like interface via a lua console command.

  • You can access your player_t using the shorthand p. Output of previous commands can be accessed using out[#], where # is the number shown in the output.

  • You can set something to happen repeatedly by calling interval(#, action), where # is the interval in tics, and action is either a function or a string. This returns an object on which you can call .off() to disable it, .on() to re-enable it, and .append(action) to add an additional action to be executed immediately after.

  • You can set a watch on an expression by calling watch(expression, label), where expression is either a function or a string, and label is a string to use to label the value on the screen. The label argument is optional, but highly recommended if you are using a function. Watches are evaluated every tic and displayed on the HUD. You can also disable a watch (removing it from the screen and preventing its evaluation) and re-enable it, in the same way as with interval.

  • Typing lua_reset in the console will reset the REPL environment, clearing all defined variables, saved outputs, intervals, and watches.

• A sudo console command, which does what you'd imagine it does if you're familiar with its namesake. More specifically, it temporarily sets devparm to true, and multiplayer and netgame to false, before executing a command, then restores their previous values afterwards. It also sets a flag which I can reference in other parts of the code to add additional command-specific overrides.

• Typing these_arent_the_mods_youre_looking_for in the console will clear the "game modified" command if it is set.

• Specifying the -bypass option for addfile will load any mod as "unimportant", similar to WADs that only contain audio. This way, the game won't be flagged as modified, you can add it locally in multiplayer, and when hosting, the file won't be sent to players that join.

  • Adding files that affect gameplay is not recommended in multiplayer, as it will likely result in sync issues. The exception is when you're running this in the server console, and the file only makes a one-off change that can be applied to everyone with a single resync.

• Changing skin color is now possible even when you're moving, though it might cause glitches with some characters, including my own. Your skin can be changed while moving as well. As of v2.2.9, this all works even in multiplayer, but doing so in a competitive game mode will generally be considered cheating, so don't do that unless you know everyone on the server is okay with it.

• You can specify -downloadonly on the command line if you just want to download a server's files for later. In this mode, whenever SRB2 would normally join a server (after all files are downloaded), it will instead quit to desktop. It will also bypass some checks that are only relevant to joining a server—for example, in -downloadonly mode, it will start downloading files from a server even if the server is currently full. This can be useful if you can't join the server at the moment but want to preload its files for when you can.

• The -nofiles command line parameter, commented out in vanilla SRB2, is re-enabled. This option will tell the game not to load addons when joining a server. This means you can join the server even if you don't have a file it's not willing to send, but depending on what the files are, it's likely you will crash. It can still be useful if a server has maxsend set too low, as you can set your name prior to joining the server, and even if you crash, they should still get the message.

• When searching for a local copy of a server addon, the game will first search in a directory called "OVERRIDE", if one exists. This folder should be in the main SRB2 folder, where DOWNLOAD, config.cfg, gamedata.dat, et cetera are located. If it finds a file in that location with the requested name, it will load it without verifying the MD5 hash. This can be useful if a server has an addon that does something obnoxious (e.g. dofor from admintools) and you want to disable that part of the addon.

• Whenever a mod is loaded (unless -bypass is used) it will look for a file with the same name with a prepended _ in a directory called "APPEND". If it finds it, it will automatically load it afterwards in -bypass mode.

  • For example, if you want to replace some of the sprites for my character Ellie (CL_Ellie_v2.1.0.pk3) and have them take effect (on your end) whenever you join a server with the mod, you can create a file called _CL_Ellie_v2.1.0.pk3, containing a P_SKIN lump and the replacement sprites, then put it in the APPEND directory, and every time Ellie is loaded, the new sprites will be loaded immediately after.

  • This can be used similarly to "OVERRIDE", for replacing sounds, sprites, etc. in a mod universally, without having to copy all the stuff that isn't changing. This way, the changes can more easily be applied to new versions of the mod, simply by renaming or linking the file.

• Before downloading a new file with the same name as an existing file in DOWNLOAD, the game will now rename the existing file (adding an "_old*#*" suffix) as a backup so it doesn't get overwritten.

• The game is now aware of symbolic links when searching for mod files, and will put the name of the actual file in the WAD list rather than the name of the link. This is intended for easy updating of mod versions in config files, without having to change the version number in each one.

• When joining a server, its IP will be displayed in the console. This is because sometimes I've had a hard time finding the server I was just in when I want to rejoin, like if I forgot the name or the name changed.

• The band-aid fix I made for leavebug is integrated in this build.