crawl-ref/source/actor-los.cc

   1 #include "AppHdr.h"
   2
   3 #include "actor.h"
   4 #include "coord.h"
   5 #include "losglobal.h"
   6 #include "player.h"
   7 #include "monster.h"
   8 #include "state.h"
   9 #include "viewgeom.h"
  10
  11 bool actor::observable() const
  12 {
  13     return (crawl_state.game_is_arena() && this != &you
  14             || this == &you || you.can_see(this));
  15 }
  16
  17 bool actor::see_cell(const coord_def &p) const
  18 {
  19     if (!in_bounds(pos()))
  20         return (false); // actor is off the map
  21
  22     return (cell_see_cell(pos(), p, LOS_DEFAULT));
  23 }
  24
  25 bool player::see_cell(const coord_def &p) const
  26 {
  27     if (!map_bounds(p))
  28         return (false);
  29     if (crawl_state.game_is_arena() && this == &you)
  30         return (true);
  31     if (xray_vision)
  32         return ((pos() - p).abs() <= dist_range(you.current_vision));
  33     return (actor::see_cell(p));
  34 }
  35
  36 bool actor::can_see(const actor *target) const
  37 {
  38     return (target->visible_to(this) && see_cell(target->pos()));
  39 }
  40
  41 bool actor::see_cell_no_trans(const coord_def &p) const
  42 {
  43     return (cell_see_cell(pos(), p, LOS_NO_TRANS));
  44 }
  45
  46 bool player::trans_wall_blocking(const coord_def &p) const
  47 {
  48     return (see_cell(p) && !see_cell_no_trans(p));
  49 }
  50
  51 const los_base* actor::get_los()
  52 {
  53     los = los_glob(pos(), LOS_DEFAULT);
  54     return (&los);
  55 }
  56
  57 const los_base* player::get_los()
  58 {
  59     if (crawl_state.game_is_arena() && this == &you)
  60     {
  61         // env.show.init iterates over these bounds for arena
  62         los = los_glob(crawl_view.vgrdc, LOS_ARENA,
  63                        circle_def(LOS_MAX_RANGE, C_SQUARE));
  64         return (&los);
  65     }
  66     else if (xray_vision)
  67     {
  68         los = los_glob(pos(), LOS_ARENA,
  69                        circle_def(you.current_vision, C_ROUND));
  70         return (&los);
  71     }
  72     else
  73         return (actor::get_los());
  74 }
  75
  76 const los_base* actor::get_los_no_trans()
  77 {
  78     los_no_trans = los_glob(pos(), LOS_NO_TRANS);
  79     return (&los_no_trans);
  80 }
  81
  82 bool player::can_see(const actor* a) const
  83 {
  84     if (crawl_state.game_is_arena() || crawl_state.arena_suspended)
  85         return (see_cell(a->pos()));
  86     else if (xray_vision)
  87         return see_cell(a->pos());
  88     else
  89         return (actor::can_see(a));
  90 }