Level.cs

using System;
using System.Drawing;

namespace func_rocket
{
	public class Level
	{
		public Level(string name, Rocket rocket, Vector target, Gravity gravity, Physics physics)
		{
			Name = name;
			Rocket = rocket;
			InitialRocket = rocket;
			Target = target;
			this.physics = physics;
			Gravity = gravity;
		}

		public readonly string Name;
		public readonly Rocket InitialRocket;
		private readonly Physics physics;
		public Rocket Rocket;
		public Vector Target;

		public Gravity Gravity { get; private set; }

		public bool IsCompleted => (Rocket.Location - Target).Length < 20;

		public void Move(Size spaceSize, Turn turn)
		{
			var force = ForcesTask.Sum(ForcesTask.GetThrustForce(1.0), ForcesTask.ConvertGravityToForce(Gravity, spaceSize));
			Rocket = physics.MoveRocket(Rocket, force, turn, spaceSize, 0.3);
		}

		public void Reset()
		{
			Rocket = InitialRocket;
		}
	}
}