Merge halo.cc into areas.cc.

1 files changed, 49 insertions, 0 deletions

diff --git a/crawl-ref/source/areas.cc b/crawl-ref/source/areas.cc
index 43dc1e4b97..7477f83180 100644
--- a/crawl-ref/source/areas.cc
+++ b/crawl-ref/source/areas.cc
@@ -23,6 +23,7 @@
 #include "player.h"
 #include "religion.h"
 #include "stuff.h"
+#include "terrain.h"
 #include "traps.h"
 #include "travel.h"
 #include "viewgeom.h"
@@ -255,3 +256,51 @@ bool silenced(const coord_def& p)
     return (you.duration[DUR_SILENCE] && distance(p, you.pos()) <= 6*6 + 1);
 }
 
+/////////////
+// Halos
+
+bool actor::haloed() const
+{
+    return (you.halo_contains(pos()));
+}
+
+bool actor::halo_contains(const coord_def &c) const
+{
+    int r = halo_radius();
+    return (r > 0 && (c - pos()).abs() <= r * r && see_cell(c));
+}
+
+int player::halo_radius() const
+{
+    if (you.religion == GOD_SHINING_ONE && you.piety >= piety_breakpoint(0)
+        && !you.penance[GOD_SHINING_ONE])
+    {
+        return (std::min(LOS_RADIUS, you.piety / 20));
+    }
+
+    return (0);
+}
+
+int monsters::halo_radius() const
+{
+    // Angels and Daevas are haloed.
+    if (holiness() == MH_HOLY)
+        return (2);
+    else
+        return (0);
+}
+
+// XXX: This might become too expensive; possibly, keep
+//      a mapping of cell -> list of monsters in view of cell
+//      and just iterate through that.
+std::list<actor*> haloers(const coord_def &c)
+{
+    std::list<actor*> ret;
+    for (radius_iterator ri(c, LOS_RADIUS, false); ri; ++ri)
+    {
+        actor* a = actor_at(*ri);
+        if (a && a->halo_contains(c))
+            ret.push_back(a);
+    }
+    return (ret);
+}