PhysicsManagerFactory.cs

namespace TrueSync {

    public class PhysicsManager {

        public enum PhysicsType {W_2D, W_3D};

        public static IPhysicsManager instance;

        public static IPhysicsManager New(TrueSyncConfig trueSyncConfig) {
            if (trueSyncConfig.physics3DEnabled) {
                instance = new PhysicsWorldManager();
                instance.Gravity = trueSyncConfig.gravity3D;
                instance.SpeculativeContacts = trueSyncConfig.speculativeContacts3D;
            } else if (trueSyncConfig.physics2DEnabled) {
                instance = new Physics2DWorldManager();
                instance.Gravity = new TSVector(trueSyncConfig.gravity2D.x, trueSyncConfig.gravity2D.y, 0);
                instance.SpeculativeContacts = trueSyncConfig.speculativeContacts2D;
            }

            return instance;
        }

        internal static void InitTest3D() {
            instance = new PhysicsWorldManager();
            instance.Gravity = new TSVector(0, -10, 0);
            instance.LockedTimeStep = 0.02f;
            instance.Init();
        }

        internal static void InitTest2D() {
            instance = new Physics2DWorldManager();
            instance.Gravity = new TSVector(0, -10, 0);
            instance.LockedTimeStep = 0.02f;
            instance.Init();
        }

    }

}