Use FixedBitArray instead of large arrays of bools.

The only cost is having assignments be a function, as you can't overload
operator[] to have separate bits be lvalues.

1 files changed, 7 insertions, 0 deletions

diff --git a/crawl-ref/source/bitary.h b/crawl-ref/source/bitary.h
index 065afbba1c..5920e798f1 100644
--- a/crawl-ref/source/bitary.h
+++ b/crawl-ref/source/bitary.h
@@ -94,6 +94,13 @@ public:
             data[i] &= x.data[i];
         return *this;
     }
+
+    void init(bool value)
+    {
+        long fill = value ? ~(long)0 : 0;
+        for (unsigned int i = 0; i < ARRAYSZ(data); i++)
+            data[i] = fill;
+    }
 };
 
 template <unsigned int SIZEX, unsigned int SIZEY> class FixedBitArray