diff --git a/mecha.py b/mecha.py
index c96e300..c36a48a 100755
--- a/mecha.py
+++ b/mecha.py
@@ -14,7 +14,7 @@ class Mass():
         self.pos = np.array(pos, dtype='float64')
         self.speed = np.array(speed, dtype='float64')
         self.mass = mass
-        self.G = 0.000001
+        self.G = 0.00000000001
 
     def tick(self):
         self.pos += self.speed
@@ -22,9 +22,12 @@ class Mass():
     def ref(self,
             origin=np.array((0, 0), dtype='float64'),
             speed=np.array((0, 0), dtype='float64')):
-        #self.pos -= origin
-        #self.speed -= speed
+        self.pos -= origin
+        self.speed -= speed
         pass
+    def apply_forces(self, elements):
+        self.apply_gravity(elements)
+
     def apply_gravity(self, elements):
         for element in elements:
             d = element.pos - self.pos
@@ -40,15 +43,27 @@ class Player(Mass):
                  orientation=0,
                  pos=(0, 0),
                  speed=(0, 0),
-                 mass=1):
+                 mass=1,
+                 thrust=0.01):
         Mass.__init__(self, pos=pos, speed=speed, mass=mass)
         self.orientation = orientation
         self.actions = {"thrust": False, "fire": False}
-        self.actions.update(keys)
-
-    def action(self, keys):
-        self.actions.update(keys)
+        self.thrust=thrust
 
+    def action(self, **kwargs):
+        print(kwargs)
+        self.actions.update(kwargs)
+    
+    def apply_thrust(self):
+        if self.actions['thrust']:
+            orientation = np.deg2rad(self.orientation + 90)
+            or_tuple=(np.cos(orientation), -np.sin(orientation))
+            norm = self.thrust/self.mass
+            self.speed += norm * np.array(or_tuple, dtype='float64')
+    
+    def apply_forces(self, elements):
+        Mass.apply_forces(self, elements)
+        self.apply_thrust()
 
 if __name__ == "__main__":
     pass
diff --git a/visual.py b/visual.py
index 0232beb..7755630 100755
--- a/visual.py
+++ b/visual.py
@@ -65,13 +65,13 @@ if __name__ == "__main__":
     pygame.init()
     black = (0, 0, 0)
     size = width, height = 1366, 720
-    TICK_RATE = 30
+    TICK_RATE = 60
     keys = set()
     tick = (time.time(), time.time(), 0)
     screen = pygame.display.set_mode(size,
                                      flags=pygame.RESIZABLE)
-    elements = [Player(speed=(5, 0), pos=(10, -200)), Player(speed=(-5, 0), pos=(10, 200), mass = 1), Planet(mass=200)]
-    reference = 1
+    elements = [Player(speed=(5, 0), pos=(10, -200)), Player(speed=(-5, 0), pos=(10, 200), mass = 1), Planet(mass=200), Planet(mass=200, pos=(0,20), speed=(-1,0)), Planet(mass=150, pos = (0, 1000), speed = (15, 0)), Player(mass=5, pos = (0, 1010), speed = (15, 1))]
+    reference = 2
     joy=[1, 1]
     while 1:
         dtick = tick
@@ -91,24 +91,32 @@ if __name__ == "__main__":
                 if event.type == pygame.KEYDOWN:
                     keys.update({event.key})
                     print(event.key)
-                    # if event.key == 102:
-                    #     follow = (follow + 1)%len(elements)
+                    if event.key == 102:
+                        reference = (reference + 1)%len(elements)
+                    if event.key == (32):
+                        elements[1].mecha.action(thrust=True)
                 if event.type == pygame.KEYUP:
                     if event.key in keys:
                         keys.remove(event.key)
+                    if event.key == (32):
+                        elements[1].mecha.action(thrust=False)
             screen.fill(black)
             for key in keys:
                 if key in [275,276,273,274]:
                     exec("joy" + ("[0]+","[0]-","[1]+","[1]-")[[275,276,273,274].index(key)] + "=1")
                     elements[1].mecha.orientation=joy[0]*(-3)
             for element in elements:
-                element.mecha.apply_gravity([element.mecha for element in elements])
+                element.mecha.apply_forces([element.mecha for element in elements])
             for element in elements:
                 element.mecha.tick()
-            ori,speed=origin=elements[0].mecha.pos, elements[0].mecha.speed
+            ori,speed=origin=np.array(elements[0].mecha.pos), np.array(elements[0].mecha.speed)
             for element in elements:
                 element.mecha.ref(origin=ori, speed=speed)
             if i < 2:
+                while 10**(joy[1]*0.05) > max(size)/60:
+                    joy[1] -= 1
+                while 10**(joy[1]*0.05) < 0.08 :
+                    joy[1] += 1
                 for element in elements:
                     element.draw(scale=10**(joy[1]*0.05), reference=elements[reference].mecha.pos, size=screen.get_size())
                 pygame.display.flip()
@@ -116,4 +124,4 @@ if __name__ == "__main__":
             #     element.apply(camera=camera, origin=origin)
             #     screen.blit(element.image, element.position)
         time.sleep(0.001)
-        if tick[2]%60 == 0 : print(elements[2].mecha.pos, elements[2].mecha.speed)
\ No newline at end of file
+        #if tick[2]%60 == 0 : print(elements[2].mecha.pos, elements[2].mecha.speed)
\ No newline at end of file