empserver/include/unit.h
Markus Armbruster 7e2008e7f4 License upgrade to GPL version 3 or later
Why upgrade?  I'm not a lawyer, but here's my take on the differences
to version 2:

* Software patents: better protection against abuse of patents to
  prevent users from exercising the rights under the GPL.  I doubt
  we'll get hit with a patent suit, but it's a good move just on
  general principles.

* License compatibility: compatible with more free licenses, i.e. can
  "steal" more free software for use in Empire.  I don't expect to steal
  much, but it's nice to have the option.

* Definition of "source code": modernization of some details for today's
  networked world, to make it easier to distribute the software.  Not
  really relevant to us now, as we normally distribute full source code.

* Tivoization: this is about putting GPL-licensed software in hardware,
  then make the hardware refuse to run modified software.  "Neat" trick
  to effectively deny its users their rights under the GPL.  Abuse was
  "pioneered" by TiVo (popular digital video recorders).  GPLv3 forbids
  it.  Unlikely to become a problem for us.

* Internationalization: more careful wording, to harden the license
  outside the US.  The lawyers tell us it better be done that way.

* License violations: friendlier way to deal with license violations.
  This has come out of past experience enforcing the GPL.

* Additional permissions: Probably not relevant to us.

Also include myself in the list of principal authors.
2011-04-12 21:20:58 +02:00

66 lines
2.3 KiB
C

/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure, Markus Armbruster
*
* Empire 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
* See files README, COPYING and CREDITS in the root of the source
* tree for related information and legal notices. It is expected
* that future projects/authors will amend these files as needed.
*
* ---
*
* unit.h: Generalize unit data structures and functions.
*
* Known contributors to this file:
* Ron Koenderink, 2006-2007
* Markus Armbruster, 2006
*/
#ifndef UNIT_H
#define UNIT_H
#include "empobj.h"
struct ulist {
struct emp_qelem queue; /* list of units */
double mobil; /* how much mobility the unit has left */
struct empobj_chr *chrp; /* pointer to characteristics unit */
union empobj_storage unit; /* unit */
coord x, y; /* x,y it came from LAND only */
int eff; /* LAND only */
int supplied; /* LAND only */
};
extern void unit_cargo_init(void);
extern void unit_carrier_change(struct empobj *, int, int, int);
extern int unit_cargo_first(int, int, int);
extern int unit_cargo_next(int, int);
extern int unit_cargo_count(int, int, int);
extern int unit_nplane(int, int, int *, int *, int *);
extern int unit_onresize(int);
extern void unit_list(struct emp_qelem *);
extern void unit_put(struct emp_qelem *list, natid actor);
extern char *unit_path(int, struct empobj *, char *);
extern void unit_view(struct emp_qelem *);
extern void unit_update_cargo(struct empobj *);
extern void unit_drop_cargo(struct empobj *, natid);
extern void unit_give_away(struct empobj *, natid, natid);
extern void unit_wipe_orders(struct empobj *);
#endif