references instead of copies

[popboot.git] / node.cpp

diff --git a/node.cpp b/node.cpp
index ed72a7f60c5a5e289c33fe36592a715d4ec29cc1..1fb2b2e3ee9448eeb50a7f0657e23f1082f72895 100644 (file)
--- a/node.cpp
+++ b/node.cpp
@@ -1,11 +1,13 @@
 #include "node.h"
+#include <algorithm>
 using namespace std;
 
 Node::Node(Action action){
        _action = action;
+       _preconditions = _action.preconditions();
 }
 
-Action Node::action(){
+const Action& Node::action() const{
        return _action;
 }
 
@@ -15,10 +17,15 @@ void Node::addChild(Node* node){
 }
 
 
-void Node::execute(){
+void Node::execute(const literals& effects){
+       for (literals::const_iterator effect = effects.begin(); effect != effects.end(); ++effect){
+               _preconditions.erase(find(_preconditions.begin(),_preconditions.end(), *effect));
+       }
+       if (_preconditions.size() != 0)
+               return;
        _action.execute();
        
        for(vector<Node*>::iterator child = _children.begin(); child != _children.end(); ++child){
-               (*child)->execute();
+               (*child)->execute(_action.effects());
        }
 }