refactor UnitAI::SelectTarget to allow having a predicate function (1st step).

--HG-- branch : trunk
2010-02-27 16:29:58 +01:00
parent e010310c6d
commit d9056adc8a
7 changed files with 113 additions and 96 deletions
@@ -2085,4 +2085,19 @@ namespace Trinity
    }
 }

+// binary function to sort unit based on the distance to a reference unit
+struct TargetDistanceOrder : public std::binary_function<const Unit *, const Unit *, bool>
+{
+    const Unit *me;
+
+    // pUnit: the reference unit from which the distance is computed.
+    TargetDistanceOrder(const Unit* pUnit) : me(pUnit) {};
+
+    // functor for operator "<"
+    bool operator()(const Unit* left, const Unit* right) const
+    {
+        return (me->GetExactDistSq(left) < me->GetExactDistSq(right));
+    }
+};
+
 #endif