Implement actor::can_see.

This just relies on actor::visible_to and actor::see_cell. An arena
special case was removed.

6 files changed, 6 insertions, 16 deletions

diff --git a/crawl-ref/source/actor.cc b/crawl-ref/source/actor.cc
index 83dcc799aa..b00125f5b7 100644
--- a/crawl-ref/source/actor.cc
+++ b/crawl-ref/source/actor.cc
@@ -17,6 +17,11 @@ bool actor::observable() const
     return (crawl_state.arena || this == &you || you.can_see(this));
 }
 
+bool actor::can_see(const actor *target) const
+{
+    return (target->visible_to(this) && see_cell(target->pos()));
+}
+     
 bool actor::has_equipped(equipment_type eq, int sub_type) const
 {
     const item_def *item = slot_item(eq);
diff --git a/crawl-ref/source/actor.h b/crawl-ref/source/actor.h
index b48945847d..69ae5ebf79 100644
--- a/crawl-ref/source/actor.h
+++ b/crawl-ref/source/actor.h
@@ -109,7 +109,7 @@ public:
     virtual bool see_cell(const coord_def &c) const = 0;
 
     // Can the actor actually see the target?
-    virtual bool can_see(const actor *target) const = 0;
+    virtual bool can_see(const actor *target) const;
 
     // Visibility as required by messaging. In usual play:
     //   Does the player know what's happening to the actor?
diff --git a/crawl-ref/source/monster.cc b/crawl-ref/source/monster.cc
index 28f44c2c7b..affe0e3836 100644
--- a/crawl-ref/source/monster.cc
+++ b/crawl-ref/source/monster.cc
@@ -5159,11 +5159,6 @@ bool monsters::see_cell(const coord_def &c) const
     return (mon_see_cell(c));
 }
 
-bool monsters::can_see(const actor *targ) const
-{
-    return (targ->visible_to(this) && see_cell(targ->pos()));
-}
-
 bool monsters::near_foe() const
 {
     const actor *afoe = get_foe();
diff --git a/crawl-ref/source/monster.h b/crawl-ref/source/monster.h
index d19af87d5f..5138f6b6f7 100644
--- a/crawl-ref/source/monster.h
+++ b/crawl-ref/source/monster.h
@@ -317,7 +317,6 @@ public:
     bool visible_to(const actor *looker) const;
     bool mon_see_cell(const coord_def& pos, bool reach = false) const;
     bool see_cell(const coord_def& c) const;
-    bool can_see(const actor *target) const;
     bool near_foe() const;
 
     bool is_icy() const;
diff --git a/crawl-ref/source/player.cc b/crawl-ref/source/player.cc
index abd9b69748..b4b02a9c02 100644
--- a/crawl-ref/source/player.cc
+++ b/crawl-ref/source/player.cc
@@ -6903,14 +6903,6 @@ bool player::see_cell(const coord_def &c) const
     return (::see_cell(c));
 }
 
-bool player::can_see(const actor *target) const
-{
-    if (crawl_state.arena)
-        return target->visible_to(this);
-
-    return (target->visible_to(this) && see_cell(target->pos()));
-}
-
 bool player::backlit(bool check_haloed) const
 {
     return (get_contamination_level() > 0 || duration[DUR_BACKLIGHT]
diff --git a/crawl-ref/source/player.h b/crawl-ref/source/player.h
index 7e8fa551b8..0d113ff5b2 100644
--- a/crawl-ref/source/player.h
+++ b/crawl-ref/source/player.h
@@ -318,7 +318,6 @@ public:
     bool can_see_invisible(bool unid) const;
     bool visible_to(const actor *looker) const;
     bool see_cell(const coord_def &c) const;
-    bool can_see(const actor *target) const;
     bool is_icy() const;
     bool is_fiery() const;