diff --git a/CMakeLists.txt b/CMakeLists.txt
index 36a46e9..d97d52d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,6 +69,15 @@ set(ASSETS_cg
 
   assets-cg/Sprites/Players/mainship1.png
   assets-cg/Sprites/Players/Satellite_Lvl1.png
+  assets-cg/Sprites/Players/player_ship1.png
+  assets-cg/Sprites/Players/player_ship2.png
+  assets-cg/Sprites/Players/player_ship3.png
+  assets-cg/Sprites/Players/player_ship4.png
+  assets-cg/Sprites/Players/player_ship5.png
+  assets-cg/Sprites/Players/player_ship6.png
+  assets-cg/Sprites/Players/player_ship7.png
+  assets-cg/Sprites/Players/player_ship8.png
+
 
   assets-cg/Sprites/Enemies/Lifebar.png
   assets-cg/Sprites/Enemies/mainship2.png
@@ -79,8 +88,9 @@ set(ASSETS_cg
   assets-cg/Sprites/Boss/BossGun.png
 
 	assets-cg/Levels/tileset.png
+  assets-cg/Levels/Level1.json
   assets-cg/Levels/Level2.json
-#  assets-cg/Levels/Tileset_Space.json
+  #  assets-cg/Levels/Tileset_Space.json
   # ...
 )
 
diff --git a/TODO.txt b/TODO.txt
index 2e8d2d1..1f0dc44 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -12,6 +12,7 @@
 - animer des éléments du décors (clignotements, sprites animés, ...)
 - interaction avec le décors (collisions possibles avec certaines tiles) qui imposent donc de suivre un "chemin" dans le niveau
 - [DONE] multiple layers de tiles pour avoir des niveaux plus beaux
+- implémenter des vitesses de défilement variables pour les décors de fond.
 
 
 ## Partie mouvement :
@@ -29,6 +30,7 @@
 - [DONE] implémenter un système de bonus (points, upgrade tir/satellites/... )
 - implémenter un système d'amélioration de compétence de tirs (bullet -> mega bullet -> laser -> mega laser -> bomb -> etc.)
 - implémenter un système d'animation du vaisseau (réacteurs par exemple)
+- implémenter un système de boost des munitions si on garde le doigt appuyé sur la touche de laser
 
 
 ## Scenario
@@ -58,6 +60,8 @@
     o boss 3 : "Gun Crab"
     o boss 4 : "Demoniac Snake"
     o boss 5 : "Space Octopus"
+    o ...
+    o boss of the boss  "Zgrog Master"
 - création de séquences avec les boss (différentes phases)
 - créations de différentes armes
 - [DONE - CAN BE IMPROVED] créations de différents bonus
@@ -84,10 +88,14 @@
 ## Histoire (à peaufiner)
 
 En tant de Space Marshall, votre rôle est de faire respecter
-la loi intergalactique et de punir les contrevenants.
-Votre périmètre se situe dans le Grand Amas de RUZA-25f/s
+la loi intergalactique et de punir les contrevenants afin d'assurer
+la paix et le bon vivre ensemble des différentes civilisations aliens
+vivant dans votre zone de l'espace à surveiller.
+Votre périmètre englobe le Grand Amas de RUZA-25f/s dans ons entièreté
 et armé de votre vaisseau, vous devez aider les civilisations
 locales en pourchassant et anéantissant les hordes de Zgrog.
-Cette race alien robotique a pour but de coloniser les planètes
-et les stations orbitales géantes pour faire disparaître tout
-vie organique.
\ No newline at end of file
+Cette race alien robotique s'est donné pour but de coloniser les planètes
+et les stations orbitales géantes afin d'y faire disparaître toute
+vie organique.
+C'est donc un combat sans relâche que de traquer et de détruire cet
+envahisseur dénué d'âme.
\ No newline at end of file
diff --git a/assets-cg/Sprites/Boss/Boss2.png b/assets-cg/Sprites/Boss/Boss2.png
new file mode 100644
index 0000000..acf5832
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss2.png differ
diff --git a/assets-cg/Sprites/Boss/Boss3.png b/assets-cg/Sprites/Boss/Boss3.png
new file mode 100644
index 0000000..f3cfaac
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss3.png differ
diff --git a/assets-cg/Sprites/Boss/Boss4.png b/assets-cg/Sprites/Boss/Boss4.png
new file mode 100644
index 0000000..988ec8c
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss4.png differ
diff --git a/assets-cg/Sprites/Boss/Boss5.png b/assets-cg/Sprites/Boss/Boss5.png
new file mode 100644
index 0000000..9213537
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss5.png differ
diff --git a/assets-cg/Sprites/Boss/Boss6.png b/assets-cg/Sprites/Boss/Boss6.png
new file mode 100644
index 0000000..5484e61
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss6.png differ
diff --git a/assets-cg/Sprites/Boss/Boss7.png b/assets-cg/Sprites/Boss/Boss7.png
new file mode 100644
index 0000000..fe19064
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss7.png differ
diff --git a/assets-cg/Sprites/Boss/Boss8.png b/assets-cg/Sprites/Boss/Boss8.png
new file mode 100644
index 0000000..ea70307
Binary files /dev/null and b/assets-cg/Sprites/Boss/Boss8.png differ
diff --git a/assets-cg/Sprites/Enemies/Enemy_Blue_Lvl1.png b/assets-cg/Sprites/Enemies/Enemy_Blue_Lvl1.png
index ef03f9f..cf3110e 100644
Binary files a/assets-cg/Sprites/Enemies/Enemy_Blue_Lvl1.png and b/assets-cg/Sprites/Enemies/Enemy_Blue_Lvl1.png differ
diff --git a/assets-cg/Sprites/Enemies/Enemy_Red_Lvl1.png b/assets-cg/Sprites/Enemies/Enemy_Red_Lvl1.png
index 290f94d..1ae9a41 100644
Binary files a/assets-cg/Sprites/Enemies/Enemy_Red_Lvl1.png and b/assets-cg/Sprites/Enemies/Enemy_Red_Lvl1.png differ
diff --git a/assets-cg/Sprites/Players/player_ship1.png b/assets-cg/Sprites/Players/player_ship1.png
index b64a9e3..73b0d92 100644
Binary files a/assets-cg/Sprites/Players/player_ship1.png and b/assets-cg/Sprites/Players/player_ship1.png differ
diff --git a/assets-cg/Sprites/Players/player_ship2.png b/assets-cg/Sprites/Players/player_ship2.png
index 8c665d9..f4e4520 100644
Binary files a/assets-cg/Sprites/Players/player_ship2.png and b/assets-cg/Sprites/Players/player_ship2.png differ
diff --git a/assets-cg/Sprites/Players/player_ship3.png b/assets-cg/Sprites/Players/player_ship3.png
index 0e1fa33..803e000 100644
Binary files a/assets-cg/Sprites/Players/player_ship3.png and b/assets-cg/Sprites/Players/player_ship3.png differ
diff --git a/assets-cg/Sprites/Players/player_ship4.png b/assets-cg/Sprites/Players/player_ship4.png
index 586f5f0..7768721 100644
Binary files a/assets-cg/Sprites/Players/player_ship4.png and b/assets-cg/Sprites/Players/player_ship4.png differ
diff --git a/assets-cg/Sprites/Players/player_ship5.png b/assets-cg/Sprites/Players/player_ship5.png
index 749d5cb..4426e75 100644
Binary files a/assets-cg/Sprites/Players/player_ship5.png and b/assets-cg/Sprites/Players/player_ship5.png differ
diff --git a/assets-cg/Sprites/Players/player_ship6.png b/assets-cg/Sprites/Players/player_ship6.png
index 27c5e6c..ee824d6 100644
Binary files a/assets-cg/Sprites/Players/player_ship6.png and b/assets-cg/Sprites/Players/player_ship6.png differ
diff --git a/assets-cg/Sprites/Players/player_ship7.png b/assets-cg/Sprites/Players/player_ship7.png
index 0c76452..41e6096 100644
Binary files a/assets-cg/Sprites/Players/player_ship7.png and b/assets-cg/Sprites/Players/player_ship7.png differ
diff --git a/assets-cg/Sprites/Players/player_ship8.png b/assets-cg/Sprites/Players/player_ship8.png
index 524ee7d..69610ad 100644
Binary files a/assets-cg/Sprites/Players/player_ship8.png and b/assets-cg/Sprites/Players/player_ship8.png differ
diff --git a/src/background.cpp b/src/background.cpp
index b40091f..28b390a 100644
--- a/src/background.cpp
+++ b/src/background.cpp
@@ -8,13 +8,14 @@
 #include <stdlib.h> 
 
 
-
+extern struct Map map_Level1;
 extern struct Map map_Level2;
-
+Map *map_Level;
 
 Background::Background( )
 {
-
+    map_Level = &map_Level1;
+    speed = libnum::num(1.0);
 }
 
 Background::~Background( )
@@ -29,18 +30,18 @@ void Background::Render( void )
     int y0 = (int) ylevel;
     int yshifttile = (int) (16*ylevel.frac());
 
-    for(int u=0; u<map_Level2.nblayers;u++)
+    for(int u=0; u<map_Level->nblayers;u++)
         for(int i=0; i<=25; i++)
         {
             for(int j=0; j<=14; j++)
             {
-                uint16_t index = (j+y0) * map_Level2.w + (x0+i) % map_Level2.w;
-                uint16_t currentTile = map_Level2.layers[u][ index ];
+                uint16_t index = (j+y0) * map_Level->w + (x0+i) % map_Level->w;
+                uint16_t currentTile = map_Level->layers[u][ index ];
                 if (currentTile!=0)
                 {
-                    uint16_t xtile = ((currentTile % map_Level2.tileset_size)-1) * 16;
-                    uint16_t ytile = (currentTile / map_Level2.tileset_size) * 16;
-                    azrp_subimage_p8( i*16-xshifttile, j*16-yshifttile, map_Level2.tileset, xtile, ytile, 16, 16, DIMAGE_NONE );
+                    uint16_t xtile = ((currentTile % map_Level->tileset_size)-1) * 16;
+                    uint16_t ytile = (currentTile / map_Level->tileset_size) * 16;
+                    azrp_subimage_p8( i*16-xshifttile, j*16-yshifttile, map_Level->tileset, xtile, ytile, 16, 16, DIMAGE_NONE );
                 } 
             }
         }
@@ -51,17 +52,17 @@ void Background::Render( void )
 
     uint16_t tilemap[25*14]={0};
 
-    for(int u=0; u<map_Level2.nblayers;u++)
+    for(int u=0; u<map_Level->nblayers;u++)
     {
         for(int j=0; j<14; j++)
         {
             for(int i=0; i<=25; i++)
             {
-                uint16_t index = j * map_Level2.w + (x0+i) % map_Level2.w;
-                tilemap[25*j+i]= cmap_Level2.layers[u][ index ];
+                uint16_t index = j * map_Level->w + (x0+i) % map_Level->w;
+                tilemap[25*j+i]= cmap_Level->layers[u][ index ];
             }
         }
-        azrp_tilesmap( shifttile, tilemap, map_Level2.tileset, map_Level2.tileset_size);
+        azrp_tilesmap( shifttile, tilemap, map_Level->tileset, map_Level->tileset_size);
     }
 */
 }
@@ -69,7 +70,13 @@ void Background::Render( void )
 void Background::Update( float dt )
 {
     libnum::num a = libnum::num( dt / 90000.0f); //18000.0f );
-    xlevel += a;
+    xlevel += speed*a;
+}
+
+
+void Background::SetSpeed(libnum::num s)
+{
+    speed = s;
 }
 
 
@@ -82,7 +89,7 @@ void Background::IncYCoordinate( libnum::num y )
 {
     ylevel += y ;
     if (ylevel<0) ylevel=libnum::num(0);
-    if (ylevel>map_Level2.h-14) ylevel=libnum::num(map_Level2.h-14);
+    if (ylevel>map_Level->h-14) ylevel=libnum::num(map_Level->h-14);
 }
 
 
diff --git a/src/background.h b/src/background.h
index 4ec151e..3621b72 100644
--- a/src/background.h
+++ b/src/background.h
@@ -38,8 +38,11 @@ class Background
 		int GetXCoordinate( void );
 		int GetYCoordinate( void );
 
+		void SetSpeed( libnum::num s );
+
 	private:
 		libnum::num xlevel, ylevel;
+		libnum::num speed;
 
 };
 
diff --git a/src/bonus.cpp b/src/bonus.cpp
index 82c9f3a..84a94c2 100644
--- a/src/bonus.cpp
+++ b/src/bonus.cpp
@@ -37,6 +37,7 @@ Bonus::Bonus( int16_t _x, int16_t _y, uint8_t _id )
 
     currentframe = libnum::num(0);
 
+    accumulatedTime = 0.0f;
 }
 
 Bonus::~Bonus()
@@ -61,7 +62,7 @@ void Bonus::Update( float dt )
     }
     else
     {
-        pathToFollow->CalculatePosition( dt, speed, true, &x, &y );
+        pathToFollow->CalculatePosition( &accumulatedTime, dt, speed, true, &x, &y );
     }
 
     xmin = (int) x - width;
diff --git a/src/bonus.h b/src/bonus.h
index 0d805d8..36b4683 100644
--- a/src/bonus.h
+++ b/src/bonus.h
@@ -32,7 +32,9 @@ class Bonus
 
     private:
         int8_t dirx, diry;  
-        libnum::num currentframe;                
+        libnum::num currentframe;   
+
+        float accumulatedTime;             
 };
 
 
diff --git a/src/boss.cpp b/src/boss.cpp
index c98187e..2e25ff7 100644
--- a/src/boss.cpp
+++ b/src/boss.cpp
@@ -154,6 +154,7 @@ Boss::Boss( int16_t _x, int16_t _y, uint8_t _id )
         Guns[i].toberemoved = false;
     }
 
+    accumulatedTime = 0.0f;
     /* FOR DEBUGGING */
     // gint_world_switch( GINT_CALL( savedata ) );
 
@@ -171,7 +172,7 @@ void Boss::Update( float dt )
 
     if (hasTrajectory)
     {
-        pathToFollow->CalculatePosition( dt, speed, true, &x, &y );
+        pathToFollow->CalculatePosition( &accumulatedTime, dt, speed, true, &x, &y );
     }
 
     xmin = (int) x - width;
diff --git a/src/boss.h b/src/boss.h
index be773f2..b4ab5e6 100644
--- a/src/boss.h
+++ b/src/boss.h
@@ -60,6 +60,8 @@ class Boss
         uint32_t lastshoot0 = 0;
         uint32_t lastshoot1 = 0;
 
+        float accumulatedTime;
+
         bool Shoot_OK( uint32_t tempshoot, uint8_t shootID );
 };
 
diff --git a/src/collections.cpp b/src/collections.cpp
index ed23578..7b23a1e 100644
--- a/src/collections.cpp
+++ b/src/collections.cpp
@@ -87,10 +87,26 @@ void Create_Enemies( void )
     MyTrajectory->AddPoint( F );
     MyTrajectory->AddPoint( G );
 
+
     Enemy* e5 = new Enemy( 348, 112, 2);
     e5->hasTrajectory = true;
     e5->pathToFollow = MyTrajectory;
+    e5->Set_Accumulated_Time(0.0f);
+
+    Enemy* e6 = new Enemy( 348, 112, 2);
+    e6->hasTrajectory = true;
+    e6->pathToFollow = MyTrajectory;
+    e6->Set_Accumulated_Time(-1.0f);
+
+    Enemy* e7 = new Enemy( 348, 112, 2);
+    e7->hasTrajectory = true;
+    e7->pathToFollow = MyTrajectory;
+    e7->Set_Accumulated_Time(-2.0f);
+
+
     MyEnemies.push_back( e5 );
+    MyEnemies.push_back( e6 );
+    MyEnemies.push_back( e7 );
 }
 
 
diff --git a/src/enemy.cpp b/src/enemy.cpp
index 9a0914c..cd399e5 100644
--- a/src/enemy.cpp
+++ b/src/enemy.cpp
@@ -55,6 +55,8 @@ Enemy::Enemy( int16_t _x, int16_t _y, uint8_t _id )
     toberemoved = false;
 
     lastshottime = 0;
+
+    accumulatedTime = 0.0f;
 }
 
 Enemy::~Enemy()
@@ -76,7 +78,7 @@ void Enemy::Update( float dt )
     }
     else
     {
-        pathToFollow->CalculatePosition( dt, speed, true, &x, &y );
+        pathToFollow->CalculatePosition( &accumulatedTime, dt, speed, true, &x, &y );
     }
 
     xmin = (int) x - width;
@@ -87,7 +89,7 @@ void Enemy::Update( float dt )
 
     uint32_t tempshoot = rtc_ticks();
     
-    if (Shoot_OK( tempshoot ))
+    if (Shoot_OK( tempshoot, 0 ))
     {
         if ( ID==0 ) 
         {
@@ -153,14 +155,19 @@ bool Enemy::Test_Impact( Bullet *projectile )
     else return false;
 }
 
-void Enemy::Set_Speed_Vector( uint8_t _sp, uint8_t _xd, uint8_t _yd)
+void Enemy::Set_Speed_Vector( uint8_t _sp, uint8_t _xd, uint8_t _yd )
 {
     speed = _sp;
     dirx = _xd;
     diry = _yd;
 }
 
-bool Enemy::Shoot_OK( uint32_t tempshoot )
+void Enemy::Set_Accumulated_Time( float value )
+{
+    accumulatedTime = value;
+}
+
+bool Enemy::Shoot_OK( uint32_t tempshoot, uint8_t shootID )
 {
     if(tempshoot-lastshottime>15)
     {
diff --git a/src/enemy.h b/src/enemy.h
index ced5fb9..79a9300 100644
--- a/src/enemy.h
+++ b/src/enemy.h
@@ -24,6 +24,8 @@ class Enemy
         bool Test_Impact( Bullet *projectile );        
         void Set_Speed_Vector( uint8_t _sp, uint8_t _xd, uint8_t _yd);
 
+        void Set_Accumulated_Time( float value );
+
         libnum::num x, y;                   // center position of the ennemy
         uint8_t width, height;              // width and height -for the hitbox
         int16_t xmin, xmax, ymin, ymax;     // square hitbox (to speed up the bullet impact calculations)
@@ -39,8 +41,9 @@ class Enemy
         int8_t dirx, diry;                  // vector of the current direction of the ennemy (TODO : to implement more complex displacement pattern)
 
         uint32_t lastshottime;
+        float accumulatedTime;
 
-        bool Shoot_OK( uint32_t tempshoot );
+        bool Shoot_OK( uint32_t tempshoot, uint8_t shootID );
 };
 
 
diff --git a/src/main.cpp b/src/main.cpp
index 1f0a2b5..ae9ec6e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -350,6 +350,11 @@ static void get_inputs( float dt  )
     if(MyKeyboard.IsKeyPressed(MYKEY_SHIFT) && MyKeyboard.IsKeyPressedEvent(MYKEY_F2))   {texttodraw=1;}
     if(MyKeyboard.IsKeyPressed(MYKEY_SHIFT) && MyKeyboard.IsKeyPressedEvent(MYKEY_F3))   {texttodraw=2;}
     if(MyKeyboard.IsKeyPressed(MYKEY_SHIFT) && MyKeyboard.IsKeyPressedEvent(MYKEY_F4))   {texttodraw=3;}
+    if(MyKeyboard.IsKeyPressed(MYKEY_SHIFT) && MyKeyboard.IsKeyPressedEvent(MYKEY_F5))
+    {
+        drawback = !drawback;
+        drawstars = ! drawstars;
+    }
     if(MyKeyboard.IsKeyPressed(MYKEY_SHIFT) && MyKeyboard.IsKeyPressedEvent(MYKEY_F6))
     {
         azrp_starfield_close( );
@@ -474,20 +479,18 @@ int main(void)
     __printf_enable_fixed();
 
     azrp_config_scale(SCALE_PIXEL);
-    //azrp_shader_clear_configure();
-    //azrp_shader_image_rgb16_configure();
-    //azrp_shader_image_p8_configure();
-    //azrp_shader_image_p4_configure();
+
     #if(USB)
         azrp_hook_set_prefrag(hook_prefrag);
     #endif
 
     azrp_starfield_init( 250 );
 
-    //Create_Enemies( );
+    Create_Enemies( );
 
     MyPlayer = new Player( azrp_width/4, azrp_height/2, 0);
 
+/*
     MyBoss = new Boss( 3*azrp_width/4, azrp_height/2, 0);
     
         
@@ -510,7 +513,7 @@ int main(void)
 
     MyBoss->hasTrajectory = true;
     MyBoss->pathToFollow = MyTrajectory;
-
+*/
 
 /*
     #if(DBGCRSH)
diff --git a/src/player.cpp b/src/player.cpp
index 36b19dc..621037a 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -10,19 +10,31 @@
 
 
 extern bopti_image_t img_Lifebar;
-extern bopti_image_t img_mainship1;
+extern bopti_image_t *img_mainship1;
+
+extern bopti_image_t img_player_ship1;
+extern bopti_image_t img_player_ship2;
+extern bopti_image_t img_player_ship3;
+extern bopti_image_t img_player_ship4;
+extern bopti_image_t img_player_ship5;
+extern bopti_image_t img_player_ship6;
+extern bopti_image_t img_player_ship7;
+extern bopti_image_t img_player_ship8;
+
 extern bopti_image_t img_Satellite_Lvl1;
 extern Background MyBackground;
 
 Player::Player( int16_t _x, int16_t _y, uint8_t _id )
 {
+    img_mainship1 = &img_player_ship7;
+    
     x = libnum::num(_x);
     y = libnum::num(_y);
 
     ID = _id;
 
-    width = img_mainship1.width/2;
-    height = img_mainship1.height/2;
+    width = img_mainship1->width/2;
+    height = img_mainship1->height/2;
     speed = 10;
 
     xmin = (int) x - width;
@@ -68,7 +80,7 @@ void Player::Render( void )
 {
     azrp_subimage_p8_effect( (int) x - img_Lifebar.width/2, ymin - 10, &img_Lifebar, 0, 0, img_Lifebar.width, 7, DIMAGE_NONE );
     
-    if (ID==0) azrp_image_p8_effect(xmin, ymin, &img_mainship1, DIMAGE_NONE);
+    if (ID==0) azrp_image_p8_effect(xmin, ymin, img_mainship1, DIMAGE_NONE);
 
     int w = img_Satellite_Lvl1.width/2;
     int h = img_Satellite_Lvl1.height/2;
diff --git a/src/trajectory.cpp b/src/trajectory.cpp
index 5dab5a4..f68a9d9 100644
--- a/src/trajectory.cpp
+++ b/src/trajectory.cpp
@@ -4,7 +4,7 @@
 
 Trajectory::Trajectory( )
 {
-    accumulatedTime = 0.0f;
+    //accumulatedTime = 0.0f;
 }
 
 
@@ -23,25 +23,26 @@ void Trajectory::AddPoint( Point2D *p )
 }
 
 
-void Trajectory::CalculatePosition( float time, uint16_t speed, bool looped, libnum::num *xreturn, libnum::num *yreturn )
+void Trajectory::CalculatePosition( float *accumulatedTime, float time, uint16_t speed, bool looped, libnum::num *xreturn, libnum::num *yreturn )
 {
-    accumulatedTime += speed * time / 2000000.0f;
-	if (accumulatedTime>ControlPoints.size()) accumulatedTime-=ControlPoints.size();
+    *accumulatedTime += speed * time / 2000000.0f;
+	if (*accumulatedTime>ControlPoints.size()) *accumulatedTime-=ControlPoints.size();
+	if (*accumulatedTime<0) *accumulatedTime+=ControlPoints.size();
 
-    libnum::num t = libnum::num( accumulatedTime - (int) accumulatedTime );    
+    libnum::num t = libnum::num( *accumulatedTime - (int) *accumulatedTime );    
 
 	int p0, p1, p2, p3;
 
 	if (!looped)
 	{
-		p1 = (int) accumulatedTime + 1;
+		p1 = (int) *accumulatedTime + 1;
 		p2 = p1 + 1;
 		p3 = p2 + 1;
 		p0 = p1 - 1;
 	}
 	else
 	{
-		p1 = (int) accumulatedTime;
+		p1 = (int) *accumulatedTime;
 		p2 = (p1 + 1) % ControlPoints.size();
 		p3 = (p2 + 1) % ControlPoints.size();
 		p0 = p1 >= 1 ? p1 - 1 : ControlPoints.size() - 1;
diff --git a/src/trajectory.h b/src/trajectory.h
index e367a6d..d8b141d 100644
--- a/src/trajectory.h
+++ b/src/trajectory.h
@@ -16,11 +16,11 @@ class Trajectory
         ~Trajectory( );
 
         void AddPoint( Point2D *p );
-        void CalculatePosition( float time, uint16_t speed, bool looped, libnum::num *xreturn, libnum::num *yreturn );
+        void CalculatePosition( float *accumulatedTime, float time, uint16_t speed, bool looped, libnum::num *xreturn, libnum::num *yreturn );
 
         std::vector<Point2D*> ControlPoints;
         bool isLoop;
-        float accumulatedTime;
+        //float accumulatedTime;
 };