diff --git a/assets-cg/Sprites/Players/player_ship1.png b/assets-cg/Sprites/Players/player_ship1.png
new file mode 100644
index 0000000..b64a9e3
Binary files /dev/null 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
new file mode 100644
index 0000000..8c665d9
Binary files /dev/null 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
new file mode 100644
index 0000000..0e1fa33
Binary files /dev/null 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
new file mode 100644
index 0000000..586f5f0
Binary files /dev/null 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
new file mode 100644
index 0000000..749d5cb
Binary files /dev/null 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
new file mode 100644
index 0000000..27c5e6c
Binary files /dev/null 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
new file mode 100644
index 0000000..0c76452
Binary files /dev/null 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
new file mode 100644
index 0000000..524ee7d
Binary files /dev/null and b/assets-cg/Sprites/Players/player_ship8.png differ
diff --git a/assets-cg/Sprites/Rocks/asteroide1_12frames.ase b/assets-cg/Sprites/Rocks/asteroide1_12frames.ase
new file mode 100644
index 0000000..e68c132
Binary files /dev/null and b/assets-cg/Sprites/Rocks/asteroide1_12frames.ase differ
diff --git a/assets-cg/Sprites/Rocks/asteroide1_12frames.json b/assets-cg/Sprites/Rocks/asteroide1_12frames.json
new file mode 100644
index 0000000..d1ec3ff
--- /dev/null
+++ b/assets-cg/Sprites/Rocks/asteroide1_12frames.json
@@ -0,0 +1,112 @@
+{ "frames": {
+   "asteroide1_12frames 0.ase": {
+    "frame": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 1.ase": {
+    "frame": { "x": 32, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 2.ase": {
+    "frame": { "x": 64, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 3.ase": {
+    "frame": { "x": 96, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 4.ase": {
+    "frame": { "x": 128, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 5.ase": {
+    "frame": { "x": 160, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 6.ase": {
+    "frame": { "x": 192, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 7.ase": {
+    "frame": { "x": 224, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 8.ase": {
+    "frame": { "x": 256, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 9.ase": {
+    "frame": { "x": 288, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 10.ase": {
+    "frame": { "x": 320, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   },
+   "asteroide1_12frames 11.ase": {
+    "frame": { "x": 352, "y": 0, "w": 32, "h": 32 },
+    "rotated": false,
+    "trimmed": false,
+    "spriteSourceSize": { "x": 0, "y": 0, "w": 32, "h": 32 },
+    "sourceSize": { "w": 32, "h": 32 },
+    "duration": 100
+   }
+ },
+ "meta": {
+  "app": "https://github.com/LibreSprite/LibreSprite/",
+  "version": "1.0",
+  "image": "/home/sylvain/Programmes/Casio/shmup/assets-cg/Sprites/Rocks/asteroide1_12frames.png",
+  "format": "RGBA8888",
+  "size": { "w": 384, "h": 32 },
+  "scale": "1",
+  "frameTags": [
+  ],
+  "layers": [
+   { "name": "Layer 1", "opacity": 255, "blendMode": "normal" }
+  ]
+ }
+}
diff --git a/assets-cg/Sprites/Rocks/asteroide1_12frames.png b/assets-cg/Sprites/Rocks/asteroide1_12frames.png
new file mode 100644
index 0000000..8718069
Binary files /dev/null and b/assets-cg/Sprites/Rocks/asteroide1_12frames.png differ
diff --git a/src/collections.cpp b/src/collections.cpp
index ef53570..5da89c2 100644
--- a/src/collections.cpp
+++ b/src/collections.cpp
@@ -18,26 +18,26 @@ void Create_Player_Shoot( uint8_t id )
 
     if (id==0)
     {
-        Bullet *b = new Bullet( MyPlayer->x, MyPlayer->y-21, id );
+        Bullet *b = new Bullet( (int) MyPlayer->x, (int) MyPlayer->y-21, id );
         MyPlayerBullets.push_back( b );
     }
     else if (id==1)
     {
-        Bullet *b1 = new Bullet( MyPlayer->x-17, MyPlayer->y, id );
+        Bullet *b1 = new Bullet( (int) MyPlayer->x-17, (int) MyPlayer->y, id );
         MyPlayerBullets.push_back( b1 );
         
-        Bullet *b2 = new Bullet( MyPlayer->x+17, MyPlayer->y, id );
+        Bullet *b2 = new Bullet( (int) MyPlayer->x+17, (int) MyPlayer->y, id );
         MyPlayerBullets.push_back( b2 );
     }
     else if (id==2)
     {
-        Bullet *b1 = new Bullet( MyPlayer->x, MyPlayer->y-21, id );
+        Bullet *b1 = new Bullet( (int) MyPlayer->x, (int) MyPlayer->y-21, id );
         MyPlayerBullets.push_back( b1 );
         
-        Bullet *b2 = new Bullet( MyPlayer->x+17, MyPlayer->y, id );
+        Bullet *b2 = new Bullet( (int) MyPlayer->x+17, (int) MyPlayer->y, id );
         MyPlayerBullets.push_back( b2 );
         
-        Bullet *b3 = new Bullet( MyPlayer->x-17, MyPlayer->y, id );
+        Bullet *b3 = new Bullet( (int) MyPlayer->x-17, (int) MyPlayer->y, id );
         MyPlayerBullets.push_back( b3 );
     }
 }
diff --git a/src/main.cpp b/src/main.cpp
index 7dc7a34..04970a7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -217,7 +217,7 @@ static void render( void )
 }
 
 
-static void get_inputs( void  )
+static void get_inputs( float dt  )
 {
     uint8_t speed = 4;
     uint32_t tempshoot = rtc_ticks();
@@ -261,19 +261,19 @@ static void get_inputs( void  )
 
     if(keydown(KEY_LEFT))
     {
-        MyPlayer->Go_Left();
+        MyPlayer->Go_Left( dt );
     }
     if(keydown(KEY_RIGHT))
     {
-        MyPlayer->Go_Right();
+        MyPlayer->Go_Right( dt );
     }
     if(keydown(KEY_UP))
     {
-        MyPlayer->Go_Up();
+        MyPlayer->Go_Up( dt );
     }
     if(keydown(KEY_DOWN))
     {
-        MyPlayer->Go_Down();
+        MyPlayer->Go_Down( dt );
     }
 
 
@@ -384,7 +384,7 @@ int main(void)
 				// all the stuff to be update should be put here
 
 				// read inputs from the player
-				get_inputs( );
+				get_inputs( elapsedTime );
 
 				// update as per the time spend to do the loop
 				update( elapsedTime );
diff --git a/src/player.cpp b/src/player.cpp
index e990b1c..2dccfa2 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -14,14 +14,14 @@ static int16_t cosTable[360], sinTable[360];
 
 Player::Player( int16_t _x, int16_t _y, uint8_t _id )
 {
-    x = _x;
-    y = _y;
+    x = libnum::num(_x);
+    y = libnum::num(_y);
 
     ID = _id;
 
     width = img_mainship1.width/2;
     height = img_mainship1.height/2;
-    speed = 2;
+    speed = 5;
 
     xmin = (int) x - width;
     xmax = (int) x + width;
@@ -83,8 +83,8 @@ void Player::Render( void )
         {
             int angle = (int) satAngle + u*incangle;
             angle = angle % 360;
-            int xsat = x + cosTable[angle];
-            int ysat = y + sinTable[angle];
+            int xsat = (int) x + cosTable[angle];
+            int ysat = (int) y + sinTable[angle];
             azrp_image_p8_effect(xsat-w, ysat-h, &img_Satellite_Lvl1, DIMAGE_NONE);
         }
     }
@@ -150,38 +150,42 @@ bool Player::Shoot_OK( uint32_t tempshoot, uint8_t shootID )
     else return false;
 }
 
-void Player::Go_Left( void )
+void Player::Go_Left( float dt )
 {
     if( x > width/2+speed )
     {
-        x -= speed;
+        libnum::num a = libnum::num( dt / 60000.0f );
+        x -= a * libnum::num( speed );
         this->Update( 0.0f );
     }
 }
 
-void Player::Go_Right( void )
+void Player::Go_Right( float dt )
 {
     if(x < azrp_width-width/2-speed)
     {
-        x += speed;
+        libnum::num a = libnum::num( dt / 60000.0f );
+        x += a * libnum::num( speed );
         this->Update( 0.0f );
     }        
 }
 
-void Player::Go_Up( void )
+void Player::Go_Up( float dt )
 {
     if(y > height/2+speed)
     {
-        y -= speed;
+        libnum::num a = libnum::num( dt / 60000.0f );
+        y -= a * libnum::num( speed );
         this->Update( 0.0f );
     }
 }
 
-void Player::Go_Down( void )
+void Player::Go_Down( float dt )
 {
     if(y < azrp_height -height/2 -speed)
     {
-        y += speed;
+        libnum::num a = libnum::num( dt / 60000.0f );
+        y += a * libnum::num( speed );
         this->Update( 0.0f );
     }
 }
\ No newline at end of file
diff --git a/src/player.h b/src/player.h
index b04b001..4a67e49 100644
--- a/src/player.h
+++ b/src/player.h
@@ -27,12 +27,12 @@ class Player
 
         bool Shoot_OK( uint32_t tempshoot, uint8_t shootID );
 
-        void Go_Left( void );
-        void Go_Right( void );
-        void Go_Up( void );
-        void Go_Down( void );
+        void Go_Left( float dt );
+        void Go_Right( float dt );
+        void Go_Up( float dt );
+        void Go_Down( float dt );
 
-        uint16_t x, y;                   // center position of the player
+        libnum::num x, y;                   // center position of the player
         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)
         uint8_t ID;