openbor Tools

New script ~ ondoattack: Runs when engine confirms a hit by or on entity (defender's runs first) immediately before hit handling (pain, blocking, etc.) takes place.Returns following:

self: Caller
other: Attacker if running on defender, Defender if running on Attacker.
damage: attack damage.
drop: knockdown power.
attacktype: attack type.
noblock: block break force of attack.
guardcost: Guardcost of attack.
jugglecost: Jugglecost of attack.
pauseadd: Pause value of attack.
which:
::0 = Caller is defender.
::1 = Caller is attacker.

New systemvariant ~ lasthitc: Set to 1 each time engine confirms collision. If 0, engine's remaining hitcode for a given attack is disabled. Use in conjunction with ondoattack to build custom hit handling.

Skip over comments in pp_lexer. Fixes a segfault in Fatal Fury Chronicles.

Fixed some PC joystick bugs:
* Fixed control configuration when the interface is being controlled by a joystick. Reported by magggas.
* Fix the detection of PlayStation, Xbox, and GP2X controllers. OpenBOR was misdetecting my Microsoft SideWinder Freestyle Pro as an Xbox controller just because it had "Microsoft" in its name.

Actually fixed the palette bug that I tried to work around in r2917.

Added fixed-function gamma correction and entirely removed all GLSL code. Now even users with fixed-function GPUs can have completely accelerated brightness/gamma correction, including fading!

OpenGL: implemented gamma correction using the fixed-function pipeline. OpenGL 1.3 (from 2001) is now the minimum version, but older cards with no GLSL support can now use GPU-accelerated brightness and gamma correction."

Several interconnected changes:
* define OPENGL, LOADGL, and TREMOR macros in the makefile
* use the above macros in the code, making it easier to read, maintain, and port
* some general cleanup of makefile
* enable GPU-accelerated brightness/gamma correction in OpenGL
* OpenGL: do brightness correction with the fixed-function pipeline; this is a better way to do it even for GPUs that support GLSL. However, GLSL is still used for both brightness and gamma when gamma correction is requested.
* OpenGL: remove dead/disabled code
* dynamically load OpenGL libraries on OS X

Fixed tracerealloc() on Windows by implementing a pseudo-realloc() function instead of relying on the buggy realloc() implementation in the Windows CRT.

loadgl: load glGetError and glUniform4f

Fixed previews in the SDL mod selection menu for mods using data/bgs/title.png instead of data/bgs/title.gif.