diff --git a/behaviors/hello.cpp b/behaviors/hello.cpp
index 5eaf0d1..74ab942 100644
--- a/behaviors/hello.cpp
+++ b/behaviors/hello.cpp
@@ -6,5 +6,5 @@
 extern "C" void think(Action *action, char *memory, const Info *info)
 {
 	action->type = Action::MOVE; // the Dude will move
-	action->dir = Dir( std::rand() % 4 ); // the direction of the movement will be random
+    action->dir = Dir(0);//std::rand() % 4 ); // the direction of the movement will be random
 }
diff --git a/behaviors/hello.dll b/behaviors/hello.dll
deleted file mode 100644
index 7ebaead..0000000
Binary files a/behaviors/hello.dll and /dev/null differ
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 017f017..0f3d69f 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -42,6 +42,7 @@ void MainWindow::updateSimu()
 {
     p_simu->update();
     ui->dateLabel->setText(QString::number(++m_date));
+    ui->populationLabel->setText(QString::number(p_simu->getPopulation()));
     ui->drawWidget->updateDudesBehavior();
     ui->drawWidget->repaint();
 }
diff --git a/src/simulation.cpp b/src/simulation.cpp
index 5140658..1708507 100644
--- a/src/simulation.cpp
+++ b/src/simulation.cpp
@@ -35,22 +35,33 @@ void Simulation::update()
         {
             //TODO: check if target pixel is walkable and has no dude
             Coord spawnPos = p_map->team(i) + Coord(Dir(rand()%4));
-            m_dudes.push_back(new Dude(spawnPos,p_map,i));
+            Dude *dude = new Dude(spawnPos,p_map,i);
+            (*p_map)[spawnPos].data.dudePtr = dude;
+            p_map->updatePixel(spawnPos);
+            m_dudes.push_back(dude);
         }
     }
 }
 
 // TODO finish conversion of handleAction()
 void Simulation::handleAction(Action *action, Dude *dude){
-    Coord targetPos(dude->getPos() + Coord(action->dir));
-    Pixel target = p_map->getPixel(targetPos);
+    Coord currentPos(dude->getPos());
+    Coord targetPos(currentPos + Coord(action->dir));
+    Pixel source = (*p_map)[currentPos];
+    Pixel target = (*p_map)[targetPos];
     Dude* targetDude;
     dude->setSuccess(false);
     if(action == NULL) return;
     switch(action->type){
     case Action::MOVE:
-        if (isWalkable(target.type))
-            NULL; // TODO: move action
+        if (isWalkable(target.type) && target.data.dudePtr == NULL){
+            source.data.dudePtr = NULL;
+            target.data.dudePtr = dude;
+            dude->move(action->dir);
+            p_map->updatePixel(currentPos);
+            p_map->updatePixel(targetPos);
+            std::cout << "Moving to [" << targetPos.x << "," << targetPos.y << "]"<< std::endl;
+        }
         break;
     case Action::ATTACK:
         if (isDestroyable(target.type))
diff --git a/src/simulation.h b/src/simulation.h
index 3566ae8..e7927ff 100644
--- a/src/simulation.h
+++ b/src/simulation.h
@@ -16,6 +16,7 @@ private:
 public:
     Simulation(MapScene *_map, std::vector<BehaviorFunction> &_behaviors);
     MapScene* getMap() { return (MapScene*) p_map; }
+    int getPopulation(){return m_dudes.size();}
 
     /**
      * @brief update runs one step of simulation
diff --git a/src/team.cpp b/src/team.cpp
index b71172b..39813b5 100644
--- a/src/team.cpp
+++ b/src/team.cpp
@@ -32,7 +32,7 @@ void Team::destroySpawn(){
 
 Action* Team::update(Dude *dude)
 {
-    Action* action;
+    Action* action = new Action();
     m_behavior(action, dude->getMemory(),(Info*) dude);
     return action;
 }