diff --git a/src/tools/loader.cpp b/src/tools/loader.cpp
index c38b425..39b7cc2 100644
--- a/src/tools/loader.cpp
+++ b/src/tools/loader.cpp
@@ -185,19 +185,20 @@ std::vector<Mesh*> Loader::loadMesh(const std::string &filename){
             currentMesh->addTriangle(nb_vertices, nb_vertices+1, nb_vertices+2);
             for(int i=0; i<3; ++i)
             {
+                int offset = i*3;
                 if(norm.size() == 0)
                 {
                     if(tex.size() == 0)
-                        currentMesh->addVertex(pos[tab[i]-1]);
+                        currentMesh->addVertex(pos[tab[offset]-1]);
                     else
-                        currentMesh->addVertex(pos[tab[i]-1], tex[tab[i+1]-1]);
+                        currentMesh->addVertex(pos[tab[offset]-1], tex[tab[offset+1]-1]);
                 }
                 else
                 {
                     if(tex.size() == 0)
-                        currentMesh->addVertex(pos[tab[i]-1], norm[tab[i+2]-1]);
+                        currentMesh->addVertex(pos[tab[offset]-1], norm[tab[offset+2]-1]);
                     else
-                        currentMesh->addVertex(pos[tab[i]-1], norm[tab[i+2]-1], tex[tab[i+1]-1]);
+                        currentMesh->addVertex(pos[tab[offset]-1], norm[tab[offset+2]-1], tex[tab[offset+1]-1]);
                 }
             }
         }
@@ -246,6 +247,11 @@ std::vector<Mesh*> Loader::loadMesh(const std::string &filename){
             meshes.pop_back();
             --i;
         }
+        else
+        {
+            Mesh* m = meshes[i];
+            m->mergeVertices();
+        }
     }
     return meshes;
 }
diff --git a/src/tools/noise.cpp b/src/tools/noise.cpp
index eb33832..985bfea 100644
--- a/src/tools/noise.cpp
+++ b/src/tools/noise.cpp
@@ -1,6 +1,51 @@
 #include "noise.h"
 #include <iostream>
 #include <glm/ext.hpp>
+#include <ctime>
+
+void Random::init()
+{
+    std::srand(std::time(nullptr));
+}
+
+void Random::init(unsigned int seed)
+{
+    std::srand(seed);
+}
+
+
+int Random::rand(int min, int max)
+{
+    return std::rand();
+}
+
+long Random::rand(long min, long max)
+{
+    long val;
+    int * ptr = ((int*)&val);
+    ptr[0] = std::rand();
+    ptr[1] = std::rand();
+    long range = max-min;
+    val = (val % range);
+    return (val > 0 ? val : val + range) + min;
+}
+
+float Random::rand(float min, float max)
+{
+    float val = float(std::rand()) / RAND_MAX;
+    return val*(max-min) + min;
+}
+
+double Random::rand(double min, double max)
+{
+    double val;
+    int * ptr = ((int*)&val);
+    ptr[0] = std::rand();
+    ptr[1] = std::rand();
+
+    return val*(max-min) + min;
+}
+
 
 Noise::Noise()
 {
diff --git a/src/tools/noise.h b/src/tools/noise.h
index e80f2a6..3579ea0 100644
--- a/src/tools/noise.h
+++ b/src/tools/noise.h
@@ -6,6 +6,18 @@
 
 #define ARBITRARY_VALUE 12 // TODO : find an appropriate name
 
+class Random
+{
+public:
+    static void init();
+    static void init(unsigned int seed);
+
+    static int rand(int min, int max);
+    static long rand(long min, long max);
+    static float rand(float min, float max);
+    static double rand(double min, double max);
+};
+
 class Noise
 {
 private: