libdeng2|scriptsys: Added built-in function "floor"

Rounding a number down to an integer.
skyjake · May 12, 2013 · 9659f9d · 9659f9d
1 parent db75647
commit 9659f9d
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/doomsday/libdeng2/include/de/scriptsys/builtinexpression.h b/doomsday/libdeng2/include/de/scriptsys/builtinexpression.h
@@ -53,7 +53,8 @@ class BuiltInExpression : public Expression
         DESERIALIZE = 10,
         AS_TIME = 11,
         TIME_DELTA = 12,
-        AS_RECORD = 13
+        AS_RECORD = 13,
+        FLOOR = 14
     };
 
 public:

diff --git a/doomsday/libdeng2/src/scriptsys/builtinexpression.cpp b/doomsday/libdeng2/src/scriptsys/builtinexpression.cpp
@@ -29,6 +29,7 @@
 #include "de/TimeValue"
 #include "de/Writer"
 #include "de/Reader"
+#include "de/math.h"
 
 using namespace de;
 
@@ -262,6 +263,14 @@ Value *BuiltInExpression::evaluate(Evaluator &evaluator) const
             "deserialize() can operate only on block values");
     }
 
+    case FLOOR:
+        if(args->size() != 2)
+        {
+            throw WrongArgumentsError("BuiltInExpression::evaluate",
+                                      "Expected exactly one argument for FLOOR");
+        }
+        return new NumberValue(std::floor(args->at(1).asNumber()));
+
     default:
         DENG2_ASSERT(false);
     }
@@ -317,6 +326,7 @@ BuiltInExpression::Type BuiltInExpression::findType(String const &identifier)
         { "Time",        AS_TIME },
         { "timedelta",   TIME_DELTA },
         { "Record",      AS_RECORD },
+        { "floor",       FLOOR },
         { NULL,          NONE }
     };