diff --git a/src/main.zig b/src/main.zig
index cba5f09..fd8ed84 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -18,7 +18,7 @@ pub fn main() anyerror!void {
     try SetupECS(&reg); // run Entity Registry setup
 
     rl.setTargetFPS(60); // set max fps
-    var delta: f32 = 0;
+    var delta: f32 = 1;
     while (!rl.windowShouldClose()) {
         rl.beginDrawing();
         defer rl.endDrawing();
@@ -31,6 +31,9 @@ pub fn main() anyerror!void {
         const text = try std.fmt.allocPrintZ(Aloc.allocator(), "{d}", .{delta});
         rl.drawText(text, 500, 10, 11, rl.Color.white);
         delta = 1.0 / @as(f32, @floatFromInt(rl.getFPS()));
+        if(delta > 10000 or delta < -10000){
+            delta = 0;
+        }
     }
 }
 pub fn SetupECS(reg: *ecs.Registry) !void {
@@ -49,18 +52,18 @@ pub fn DrawSystem(reg: *ecs.Registry) !void {
         rl.drawTextureEx(Sprite.image, Transform.pos, Transform.rot, 1, rl.Color.white);
     }
 }
-pub fn PhysicsSystem(reg: *ecs.Registry, deltaTime: f32) !void {
+pub fn PhysicsSystem(reg: *ecs.Registry, delta: f32) !void {
     var view = reg.view(.{EnSysTypes.Transform, EnSysTypes.Rigidbody, EnSysTypes.Gravity}, .{});
     var iter = view.entityIterator();
     while(iter.next())|entity|{
-        var Rigidbody = view.get(EnSysTypes.Rigidbody, entity);
-        var Transform = view.get(EnSysTypes.Transform, entity);
+        const Rigidbody = view.get(EnSysTypes.Rigidbody, entity);
+        const Transform = view.get(EnSysTypes.Transform, entity);
         const Gravity = view.getConst(EnSysTypes.Gravity, entity);
 
-        Rigidbody.vel.x += Gravity.vel.x;
-        Rigidbody.vel.y += Gravity.vel.y;
-        Transform.pos.x += Rigidbody.vel.x / deltaTime;
-        Transform.pos.y += Rigidbody.vel.y / deltaTime;
+        Rigidbody.*.vel.x += Gravity.vel.x;
+        Rigidbody.*.vel.y += Gravity.vel.y;
+        Transform.pos.x += Rigidbody.vel.x * delta;
+        Transform.pos.y += Rigidbody.vel.y * delta;
     }
 }