common/diptreaty.h

   1 /**********************************************************************
   2  Freeciv - Copyright (C) 1996 - A Kjeldberg, L Gregersen, P Unold
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; either version 2, or (at your option)
   6    any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12 ***********************************************************************/
  13 #ifndef FC__DIPTREATY_H
  14 #define FC__DIPTREATY_H
  15
  16 #ifdef __cplusplus
  17 extern "C" {
  18 #endif /* __cplusplus */
  19
  20 #include "support.h"            /* bool type */
  21
  22 /* Used in the network protocol. */
  23 enum clause_type { CLAUSE_ADVANCE, CLAUSE_GOLD, CLAUSE_MAP,
  24                    CLAUSE_SEAMAP, CLAUSE_CITY,
  25                    CLAUSE_CEASEFIRE, CLAUSE_PEACE, CLAUSE_ALLIANCE,
  26                    CLAUSE_VISION, CLAUSE_EMBASSY, CLAUSE_LAST };
  27
  28 #define is_pact_clause(x)                                                   \
  29   ((x == CLAUSE_CEASEFIRE) || (x == CLAUSE_PEACE) || (x == CLAUSE_ALLIANCE))
  30
  31 /* For when we need to iterate over treaties */
  32 struct Clause;
  33 #define SPECLIST_TAG clause
  34 #define SPECLIST_TYPE struct Clause
  35 #include "speclist.h"
  36
  37 #define clause_list_iterate(clauselist, pclause) \
  38     TYPED_LIST_ITERATE(struct Clause, clauselist, pclause)
  39 #define clause_list_iterate_end  LIST_ITERATE_END
  40
  41 struct Clause {
  42   enum clause_type type;
  43   struct player *from;
  44   int value;
  45 };
  46
  47 struct Treaty {
  48   struct player *plr0, *plr1;
  49   bool accept0, accept1;
  50   struct clause_list *clauses;
  51 };
  52
  53 bool diplomacy_possible(const struct player *pplayer,
  54                         const struct player *aplayer);
  55 bool could_meet_with_player(const struct player *pplayer,
  56                             const struct player *aplayer);
  57 bool could_intel_with_player(const struct player *pplayer,
  58                              const struct player *aplayer);
  59
  60 void init_treaty(struct Treaty *ptreaty,
  61                  struct player *plr0, struct player *plr1);
  62 bool add_clause(struct Treaty *ptreaty, struct player *pfrom,
  63                enum clause_type type, int val);
  64 bool remove_clause(struct Treaty *ptreaty, struct player *pfrom,
  65                   enum clause_type type, int val);
  66 void clear_treaty(struct Treaty *ptreaty);
  67
  68 #ifdef __cplusplus
  69 }
  70 #endif /* __cplusplus */
  71
  72 #endif /* FC__DIPTREATY_H */