diff --git a/src/engine.cpp b/src/engine.cpp
index df7fb06..24f6a2a 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -99,7 +99,7 @@ unsigned int Engine::getDeltaTime()
     return m_timeStamp - m_lastTimeStamp;
 }
 
-void Engine::setScene(std::string sceneName)
+void Engine::setScene(SceneTree *scene)
 {
-    m_scene = RESOURCE_GET(SceneTree, sceneName);
+    m_scene = scene;
 }
diff --git a/src/engine.h b/src/engine.h
index 2b88cdc..ca01b74 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -23,7 +23,7 @@ public:
                     unsigned int w = 800,
                     unsigned int h = 600,
                     bool isWindowed = true);
-    void setScene(std::string sceneName);
+    void setScene(SceneTree *scene);
     void initPhysics();
 
     void start();
diff --git a/src/main.cpp b/src/main.cpp
index a8806c3..34d7816 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -9,11 +9,10 @@
 #include "tools/pathfinder.h"
 
 int main(){
-    SceneTree scene("testScene");
-
     Engine engine;
     engine.createWindow("test");
-    engine.setScene("testScene");
+    SceneTree scene; // the opengl context must exist before the scene is created
+    engine.setScene(&scene);
     engine.start();
 
     GraphNode n1 = GraphNode();
diff --git a/src/scenetree.cpp b/src/scenetree.cpp
index 98e1ab4..809ff0d 100644
--- a/src/scenetree.cpp
+++ b/src/scenetree.cpp
@@ -1,27 +1,36 @@
 #include "scenetree.h"
 #include "resourcemanager.h"
+#include <pipeline.h>
 
 // Scene
 
-SceneTree::SceneTree(std::string name) :
-    m_name(name),
+SceneTree::SceneTree() :
+    Scene(),
     m_skybox(NULL)
 {
-    RESOURCE_ADD(this, SceneTree, m_name);
+    m_simplepipeline = new SimplePipeline();
+    m_simplepipeline->setClearColor(glm::vec3(0.1f, 0.4f, 0.25f));
 }
 
 SceneTree::~SceneTree()
 {
-    RESOURCE_ADD(NULL, SceneTree, m_name);
+
+}
+
+void SceneTree::setMainCamera(CameraNode *camera)
+{
+    m_simplepipeline->setCamera(camera);
 }
 
 SceneIterator<Light*>* SceneTree::getLights()
 {
+    // TODO
     return NULL;
 }
 
 SceneIterator<GeometryNode*>* SceneTree::getGeometry()
 {
+    // TODO
     return NULL;
 }
 
@@ -38,9 +47,8 @@ void ContainerNode::update()
         sn->update();
 }
 
-void ContainerNode::addChild(const std::string &childName)
+void ContainerNode::addChild(SceneNode* node)
 {
-    SceneNode* node = RESOURCE_GET(SceneNode, childName);
     if(node != NULL)
     {
         m_children.push_back(node);
@@ -48,18 +56,15 @@ void ContainerNode::addChild(const std::string &childName)
     }
 }
 
-void ContainerNode::removeChild(const std::string &childName)
+void ContainerNode::removeChild(SceneNode* node)
 {
-    SceneNode* node = RESOURCE_GET(SceneNode, childName);
     if(node != NULL)
     {
-        for(unsigned int i=0; i<m_children.size(); ++i)
+        for(auto it = m_children.begin(); it != m_children.end(); ++it)
         {
-            if(m_children[i] == node)
+            if(*it == node)
             {
-                m_children[i]->m_parent = NULL;
-                m_children[i] == m_children.back();
-                m_children.pop_back();
+                m_children.erase(it);
                 break;
             }
         }
diff --git a/src/scenetree.h b/src/scenetree.h
index 5e7b5ca..60a52bc 100644
--- a/src/scenetree.h
+++ b/src/scenetree.h
@@ -7,6 +7,8 @@
 #include "light.h"
 #include "resourcemanager.h"
 
+class SimplePipeline;
+
 /**
  * @brief The SceneNode class represents a class of the game
  * that will be updated or used for rendering every frame
@@ -25,8 +27,16 @@ class ContainerNode : public SceneNode
 {
 public:
     virtual void update();
-    void addChild(const std::string &childName);
-    void removeChild(const std::string &childName);
+
+    /**
+     * @brief addChild adds node in the ContainerNode's children list
+     */
+    void addChild(SceneNode* node);
+
+    /**
+     * @brief removeChild removes the first iteration of node of the children list
+     */
+    void removeChild(SceneNode* node);
 protected:
     std::vector<SceneNode*> m_children;
 };
@@ -42,7 +52,7 @@ class CameraNode : public Camera, SceneNode
 class SceneTree : public Scene
 {
 public:
-    SceneTree(std::string name);
+    SceneTree();
     ~SceneTree();
 
     virtual SceneIterator<Light*>* getLights();
@@ -53,13 +63,13 @@ public:
     Texture* getSkybox() {return m_skybox;}
     void setSkybox(Texture* skybox) {m_skybox = skybox;}
 
-    void setMainCamera(const std::string &name) {m_camera = RESOURCE_GET(CameraNode, name);}
-    void addRootObject(const std::string &name) {m_root.addChild(name);}
+    void setMainCamera(CameraNode *camera);
+    void addRootObject(SceneNode *node) {m_root.addChild(node);}
 
 private:
-    std::string m_name;
     ContainerNode m_root;
     Texture* m_skybox;
+    SimplePipeline* m_simplepipeline;
 };
 
 // Additionnal Nodes :