diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index b346c3d0eb88413c7e4c154cb1af1e65f2ad388e..2dae3d778f0dfc6c42133f3e42344c7e915e5d46 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -10,10 +10,8 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="43aff179-c306-46b9-b69f-eca5306fbf96" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/Box.c" beforeDir="false" afterPath="$PROJECT_DIR$/Box.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Star.c" beforeDir="false" afterPath="$PROJECT_DIR$/Star.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Star.h" beforeDir="false" afterPath="$PROJECT_DIR$/Star.h" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/galaxy.c" beforeDir="false" afterPath="$PROJECT_DIR$/galaxy.c" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/quad_tree.c" beforeDir="false" afterPath="$PROJECT_DIR$/quad_tree.c" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -59,11 +57,11 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
+      <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/galaxy.c">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="442">
-              <caret line="95" column="74" selection-start-line="95" selection-start-column="74" selection-end-line="95" selection-end-column="74" />
+            <state relative-caret-position="340">
+              <caret line="95" column="73" selection-start-line="95" selection-start-column="73" selection-end-line="95" selection-end-column="73" />
             </state>
           </provider>
         </entry>
@@ -77,11 +75,11 @@
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/quad_tree.c">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="155">
-              <caret line="10" column="4" selection-start-line="10" selection-start-column="4" selection-end-line="10" selection-end-column="4" />
+            <state relative-caret-position="257">
+              <caret line="17" column="81" selection-start-line="17" selection-start-column="81" selection-end-line="17" selection-end-column="81" />
             </state>
           </provider>
         </entry>
@@ -130,11 +128,11 @@
         <option value="$PROJECT_DIR$/makefile" />
         <option value="$PROJECT_DIR$/quad_tree.h" />
         <option value="$PROJECT_DIR$/Box.h" />
-        <option value="$PROJECT_DIR$/quad_tree.c" />
         <option value="$PROJECT_DIR$/Box.c" />
         <option value="$PROJECT_DIR$/Star.h" />
         <option value="$PROJECT_DIR$/Star.c" />
         <option value="$PROJECT_DIR$/galaxy.c" />
+        <option value="$PROJECT_DIR$/quad_tree.c" />
       </list>
     </option>
   </component>
@@ -192,12 +190,12 @@
       <option name="presentableId" value="Default" />
       <updated>1559227081243</updated>
       <workItem from="1559227084365" duration="53793000" />
-      <workItem from="1560336527698" duration="38917000" />
+      <workItem from="1560336527698" duration="39245000" />
     </task>
     <servers />
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="92710000" />
+    <option name="totallyTimeSpent" value="93038000" />
   </component>
   <component name="ToolWindowManager">
     <frame x="-7" y="-7" width="1550" height="838" extended-state="6" />
@@ -275,13 +273,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/Box.h">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="187">
-          <caret line="11" column="37" selection-start-line="11" selection-start-column="37" selection-end-line="11" selection-end-column="37" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/galaxy.h">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="340">
@@ -289,24 +280,24 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/quad_tree.c">
+    <entry file="file://$PROJECT_DIR$/Star.h">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="155">
-          <caret line="10" column="4" selection-start-line="10" selection-start-column="4" selection-end-line="10" selection-end-column="4" />
+        <state relative-caret-position="153">
+          <caret line="9" selection-start-line="9" selection-end-line="9" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/quad_tree.h">
+    <entry file="file://$PROJECT_DIR$/Star.c">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="238">
-          <caret line="14" column="35" selection-start-line="14" selection-start-column="35" selection-end-line="14" selection-end-column="35" />
+        <state relative-caret-position="323">
+          <caret line="40" column="44" selection-start-line="40" selection-start-column="44" selection-end-line="40" selection-end-column="44" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/Star.h">
+    <entry file="file://$PROJECT_DIR$/galaxy.c">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="153">
-          <caret line="9" selection-start-line="9" selection-end-line="9" />
+        <state relative-caret-position="340">
+          <caret line="95" column="73" selection-start-line="95" selection-start-column="73" selection-end-line="95" selection-end-column="73" />
         </state>
       </provider>
     </entry>
@@ -317,17 +308,24 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/Star.c">
+    <entry file="file://$PROJECT_DIR$/Box.h">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="323">
-          <caret line="40" column="44" selection-start-line="40" selection-start-column="44" selection-end-line="40" selection-end-column="44" />
+        <state relative-caret-position="187">
+          <caret line="11" column="37" selection-start-line="11" selection-start-column="37" selection-end-line="11" selection-end-column="37" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/galaxy.c">
+    <entry file="file://$PROJECT_DIR$/quad_tree.h">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="238">
+          <caret line="14" column="35" selection-start-line="14" selection-start-column="35" selection-end-line="14" selection-end-column="35" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/quad_tree.c">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="442">
-          <caret line="95" column="74" selection-start-line="95" selection-start-column="74" selection-end-line="95" selection-end-column="74" />
+        <state relative-caret-position="257">
+          <caret line="17" column="81" selection-start-line="17" selection-start-column="81" selection-end-line="17" selection-end-column="81" />
         </state>
       </provider>
     </entry>
diff --git a/galaxy.c b/galaxy.c
index 86074177b322350f00fcd10f8aeccd792110b138..186e7464c5dd150000b60c3a8f1c0932df58b131 100644
--- a/galaxy.c
+++ b/galaxy.c
@@ -93,7 +93,7 @@ void resize_galaxy(galaxy *g){
     }
     //On remplace le tableau
     g->stars = tab;
-    //Et on change la variable du nombre d'étoile pour qu'elle soit juste 
+    //Et on change la variable du nombre d'étoile pour qu'elle soit juste
     g->num_bodies = new_size;
 
 }
diff --git a/quad_tree.c b/quad_tree.c
index fcbe613f215caa2860f2b9732390e0744fd0ac58..1acf6967976f2851502fbbb567f63531ba4899d0 100644
--- a/quad_tree.c
+++ b/quad_tree.c
@@ -7,16 +7,20 @@
 
 quad_tree *create_quad_tree_from_galaxy(const galaxy *const g){
 
+    //Allocation du quad_tree et du noeud racine
     quad_tree* galaxy = malloc(sizeof(quad_tree*));
     node *root = malloc(sizeof(node*));
+    //Attribution des valeurs nécéssaire
     galaxy->root->b = g->b;
     galaxy->root->is_empty = true;
     galaxy->root->s = NULL;
     galaxy->root->children = NULL;
+    //Création de la super étoile avec un masse null et placé au centre de la box
     galaxy->root->super_s = new_star_vel((vec){mid_point(g->b.x0,g->b.x1),mid_point(g->b.y0,g->b.y1)},(vec){0.0,0.0},(vec){0.0,0.0},0.0,0.0);
 
 }
 
+//Suit à la lettre la fonction décrite dans l'énoncé
 void insert_star(node *n, star *s){
 
     if(is_inside(n->b,s) && n!=NULL){