diff --git a/Cargo.lock b/Cargo.lock
index 1553d5f..9ceb214 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,12 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "autocfg"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
-
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -29,16 +23,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "chrono"
-version = "0.2.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9213f7cd7c27e95c2b57c49f0e69b1ea65b27138da84a170133fd21b07659c00"
-dependencies = [
- "num",
- "time",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -51,54 +35,12 @@ version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
 
-[[package]]
-name = "num"
-version = "0.1.42"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4703ad64153382334aa8db57c637364c322d3372e097840c72000dabdcf6156e"
-dependencies = [
- "num-integer",
- "num-iter",
- "num-traits",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.45"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
-[[package]]
-name = "num-iter"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d03e6c028c5dc5cac6e2dec0efda81fc887605bb3d884578bb6d6bf7514e252"
-dependencies = [
- "autocfg",
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "practice_game"
 version = "0.1.0"
 dependencies = [
  "cat-box",
  "sdl2",
- "timer",
 ]
 
 [[package]]
@@ -124,56 +66,8 @@ dependencies = [
  "version-compare",
 ]
 
-[[package]]
-name = "time"
-version = "0.1.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
-dependencies = [
- "libc",
- "wasi",
- "winapi",
-]
-
-[[package]]
-name = "timer"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9522a9ec40055e2f9e514e38d2415a496e81dbfc1ece15d98d2fe55c44946b3"
-dependencies = [
- "chrono",
-]
-
 [[package]]
 name = "version-compare"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe88247b92c1df6b6de80ddc290f3976dbdf2f5f5d3fd049a9fb598c6dd5ca73"
-
-[[package]]
-name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
-
-[[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index 280927d..228c412 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,4 +8,3 @@ edition = "2021"
 [dependencies]
 cat-box = "0.1.7"
 sdl2 = "0.35.2"
-timer = "0.1.3"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 2298e80..3d4f336 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,9 @@
-use cat_box::{Game, Sprite, SpriteCollection, get_keyboard_state, draw_text};
+use cat_box::{Game, Sprite, SpriteCollection, get_keyboard_state, draw_text,physics};
 use std::{time::{Instant}};
 use sdl2::keyboard::Scancode;
 
+//use gravitas::{Simulation,Gravity};
+
 /* 
 keep track of accel, vel and pos
 every tick:
@@ -17,14 +19,15 @@ fn main() {
     //gravity setup
     //let meter = 13;
     let now = Instant::now();
-
-
-    //let (mut pos, mut vel, mut accel) = (20.0,0.0,-9.8);
-
+    
     let mut background = SpriteCollection::new();
     let mut run1 = Sprite::new("runner_0.png", 200, 320).unwrap();
     let sun = Sprite::new("sun.png", 50, 50).unwrap();
     let grass = Sprite::new("grass.png", 250, 450).unwrap();
+    /*
+    let mut grav = Gravity::new(2.0);
+    grav.set(0.0, 3.0);
+    */
     
     background.push(sun);
     
@@ -53,19 +56,20 @@ fn main() {
 
         
         let (x,y) = run1.position();
-        
+        run1.translate((0,-3));
 
         if x < 0 {
             run1.translate((x*-1+5,0));
         } else if x > 500 {
             run1.translate((500-x-5,0));
         }
-        
+        //- run1.rect.height() as i32
         if y < 0{
             run1.translate((0,y - run1.rect.height() as i32))
         }else if y > 320 {
             run1.translate((0,5));
         }
+
         
         draw_text(
             ctx, 
@@ -84,14 +88,18 @@ fn main() {
                 Scancode::Escape | Scancode::Q => {
                     game.terminate();
                     (0, 0)
-                }
-                //Scancode::W | Scancode::Up => (0, 5),
+                 } //Simulation::x(&grav,1.0) as i32
+                Scancode::W | Scancode::Up => (0, 3),
                 Scancode::S | Scancode::Down => (0, -5),
                 Scancode::A | Scancode::Left => (-5, 0),
                 Scancode::D | Scancode::Right => (5, 0),
                 _ => (0, 0),
             }; 
-            run1.translate((offset.0,offset.1 ));
+            
+            //if physics::check_for_collision(&run1, background.get_mut(1).unwrap()){
+                run1.translate((offset.0,offset.1));
+            
+            //}