-Fix #4 crash with mishaped command.

And prevent this error to happen with other nodes.

1 files changed, 6 insertions, 1 deletions

diff --git a/node/rerolldicenode.cpp b/node/rerolldicenode.cpp
index c156dac..2ead761 100644
--- a/node/rerolldicenode.cpp
+++ b/node/rerolldicenode.cpp
@@ -19,7 +19,7 @@ void RerollDiceNode::run(ExecutionNode* previous)
     m_previousNode = previous;
     if((nullptr!=previous)&&(nullptr!=previous->getResult()))
     {
-        DiceResult* previous_result = static_cast<DiceResult*>(previous->getResult());
+        DiceResult* previous_result = dynamic_cast<DiceResult*>(previous->getResult());
         m_result->setPrevious(previous_result);
         if(nullptr!=previous_result)
         {
@@ -47,6 +47,11 @@ void RerollDiceNode::run(ExecutionNode* previous)
                 m_nextNode->run(this);
             }
         }
+        else
+        {
+            m_errors.insert(ExecutionNode::DIE_RESULT_EXPECTED,
+                            QObject::tr(" The a operator expects dice result. Please check the documentation and fix your command."));
+        }
     }
 }
 void RerollDiceNode::setValidator(Validator* val)