ai/aitraits.c

   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
  14 #ifdef HAVE_CONFIG_H
  15 #include <fc_config.h>
  16 #endif
  17
  18 /* utility */
  19 #include "mem.h"
  20 #include "rand.h"
  21
  22 /* common */
  23 #include "game.h"
  24 #include "player.h"
  25 #include "traits.h"
  26
  27 #include "aitraits.h"
  28
  29 /**************************************************************************
  30   Initialize ai traits for player
  31 **************************************************************************/
  32 void ai_traits_init(struct player *pplayer)
  33 {
  34   enum trait tr;
  35
  36   pplayer->ai_common.traits = fc_realloc(pplayer->ai_common.traits,
  37                                          sizeof(struct ai_trait) * TRAIT_COUNT);
  38
  39   for (tr = trait_begin(); tr != trait_end(); tr = trait_next(tr)) {
  40     int min = pplayer->nation->server.traits[tr].min;
  41     int max = pplayer->nation->server.traits[tr].max;
  42
  43     switch (game.server.trait_dist) {
  44     case TDM_FIXED:
  45       pplayer->ai_common.traits[tr].val = pplayer->nation->server.traits[tr].fixed;
  46       break;
  47     case TDM_EVEN:
  48       pplayer->ai_common.traits[tr].val = fc_rand(max + 1 - min) + min;
  49       break;
  50     }
  51     pplayer->ai_common.traits[tr].mod = 0;
  52   }
  53 }
  54
  55 /**************************************************************************
  56   Free resources associated with player ai traits.
  57 **************************************************************************/
  58 void ai_traits_close(struct player *pplayer)
  59 {
  60   FC_FREE(pplayer->ai_common.traits);
  61
  62   pplayer->ai_common.traits = NULL;
  63 }
  64
  65 /**************************************************************************
  66   Get current value of player trait
  67 **************************************************************************/
  68 int ai_trait_get_value(enum trait tr, struct player *pplayer)
  69 {
  70   int val = pplayer->ai_common.traits[tr].val + pplayer->ai_common.traits[tr].mod;
  71
  72   /* Clip so that value is at least 1, and maximum is
  73    * TRAIT_DEFAULT_VALUE as many times as TRAIT_DEFAULT value is
  74    * minimum value of 1 ->
  75    * minimum is default / TRAIT_DEFAULT_VALUE,
  76    * maximum is default * TRAIT_DEFAULT_VALUE */
  77   val = CLIP(1, val, TRAIT_MAX_VALUE);
  78
  79   return val;
  80 }