Movement/SpecialAction/Actions/PlatformerJump.cs

using Syntriax.Modules.Movement.ColliderCheck;
using UnityEngine;

namespace Syntriax.Modules.Movement.SpecialAction
{
    [RequireComponent(typeof(Rigidbody2D))]
    public class PlatformerJump : MonoBehaviour, ISpecialActionActivate, ISpecialActionDeactivate, IState
    {
        public float JumpSpeed { get; set; } = 0f;
        public bool StateEnabled { get; set; } = true;

        private bool airSuspension = false;
        private float fallMultiplier = 0f;
        private float suspensionMultiplier = 0f;

        private IGroundCheck groundCheck = null;
        private Rigidbody2D rigid = null;


        private void Awake()
        {
            JumpSpeed = 10f;
            fallMultiplier = 1.5f * Time.fixedDeltaTime;
            suspensionMultiplier = 1f * Time.fixedDeltaTime;
        }

        private void Start()
        {
            rigid = GetComponent<Rigidbody2D>();
            groundCheck = GetComponentInChildren<IGroundCheck>();
        }

        private void FixedUpdate()
        {
            if (!StateEnabled)
                return;

            if (rigid.velocity.y < 0f)
                ApplySuspension(suspensionMultiplier);
            else if (!airSuspension)
                ApplySuspension(fallMultiplier);
        }

        private void ApplySuspension(float multiplier)
        {
            rigid.velocity += Physics2D.gravity * multiplier;
        }

        private void Jump()
        {
            Vector2 velocity = rigid.velocity;
            velocity.y = JumpSpeed;
            rigid.velocity = velocity;
        }

        public void OnActivation()
        {
            if (groundCheck.IsCollided())
                Jump();

            airSuspension = true;
        }

        public void OnDeactivation()
        {
            airSuspension = false;
        }
    }
}