diff --git a/src/game_object.rs b/src/game_object.rs
index c100b9c..2b78e22 100644
--- a/src/game_object.rs
+++ b/src/game_object.rs
@@ -8,9 +8,9 @@ pub struct GameObject<'a> {
     pub y: f32,
     pub w: u32,
     pub h: u32,
-    pub dx: f32,
-    pub dy: f32,
-    pub gravity: f32,
+    pub dx: f32, // TODO moved to PlayerPhysicsComponent
+    pub dy: f32, // TODO moved to PlayerPhysicsComponent
+    pub gravity: f32, // TODO moved to PlayerPhysicsComponent
     pub on_ground: bool,
     physics: Box<Updatable + 'a>,
     graphics: Box<Renderable + 'a>
diff --git a/src/keyboard.rs b/src/keyboard.rs
index ffc33a8..25dd8b7 100644
--- a/src/keyboard.rs
+++ b/src/keyboard.rs
@@ -6,7 +6,7 @@ use sdl2::keyboard::Keycode;
 pub struct KeyboardHandler {
     pressed_keys: HashMap<Keycode, bool>,
     released_keys: HashMap<Keycode, bool>,
-    held_keys: HashMap<Keycode, bool>
+    held_keys: HashMap<Keycode, bool>,
 }
 
 impl KeyboardHandler {
@@ -14,7 +14,7 @@ impl KeyboardHandler {
         KeyboardHandler {
             pressed_keys: HashMap::new(),
             released_keys: HashMap::new(),
-            held_keys: HashMap::new()
+            held_keys: HashMap::new(),
         }
     }
 
diff --git a/src/main.rs b/src/main.rs
index 766f678..9867892 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -67,7 +67,7 @@ fn main() {
 
     let timer = Timer::new();
 
-    let mut player = GameObject::new(390.0, 390.0, Box::new(PlayerPhysicsComponent), Box::new(PlayerGraphicsComponent::new(&player_sprites)));
+    let mut player = GameObject::new(390.0, 390.0, Box::new(PlayerPhysicsComponent::new()), Box::new(PlayerGraphicsComponent::new(&player_sprites)));
 
     let mut keyboard = KeyboardHandler::new();
 
diff --git a/src/player_components.rs b/src/player_components.rs
index aa23422..aeb28f3 100644
--- a/src/player_components.rs
+++ b/src/player_components.rs
@@ -7,7 +7,21 @@ use sprite::{Sprite, StaticSprite, AnimatedSprite};
 use game_object::GameObject;
 use component::{Updatable, Renderable};
 
-pub struct PlayerPhysicsComponent;
+pub struct PlayerPhysicsComponent {
+    pub dx: f32,
+    pub dy: f32,
+    pub gravity: f32,
+}
+
+impl PlayerPhysicsComponent {
+    pub fn new() -> PlayerPhysicsComponent {
+        PlayerPhysicsComponent {
+            dx: 0.0,
+            dy: 0.0,
+            gravity: 0.3,
+        }
+    }
+}
 
 impl Updatable for PlayerPhysicsComponent {
     fn update(&self, _: &GameObject) {