major rework

Car simulation/Core/Physics/ResistanceCalculator.cs

@@ -0,0 +1,25 @@
+using Car_simulation.Core.Components;
+
+namespace Car_simulation.Core.Physics
+{
+    public class ResistanceCalculator
+    {
+        public float CalculateDragForce(float speed, float dragCoefficient, float frontalArea)
+        {
+            return 0.5f * PhysicsUtil.AirDensity * dragCoefficient * frontalArea * speed * speed;
+        }
+
+        public float CalculateRollingResistanceForce(float mass, float rollingResistanceCoefficient)
+        {
+            return rollingResistanceCoefficient * mass * PhysicsUtil.G;
+        }
+
+        public float CalculateTotalResistanceForce(float speed, float mass,
+            float dragCoefficient, float frontalArea, float rollingResistanceCoefficient)
+        {
+            float dragForce = CalculateDragForce(speed, dragCoefficient, frontalArea);
+            float rollingForce = CalculateRollingResistanceForce(mass, rollingResistanceCoefficient);
+            return dragForce + rollingForce;
+        }
+    }
+}