using UnityEngine;

namespace OnlyScove.Scripts
{
    public class PlayerJumpState : PlayerBaseState
    {
        private readonly int jumpHash = Animator.StringToHash("Jump");
        private float jumpSpeed;

        public PlayerJumpState(PlayerStateMachine stateMachine, float jumpSpeed = -1f) : base(stateMachine) 
        {
            if (jumpSpeed < 0)
            {
                this.jumpSpeed = stateMachine.WalkSpeed;
            }
            else
            {
                this.jumpSpeed = jumpSpeed;
            }
        }

        public override void Enter()
        {
            stateMachine.Anim.SetTrigger(jumpHash);

            // Physic formula: v = sqrt(h * -2 * g)
            stateMachine.VelocityY = Mathf.Sqrt(stateMachine.JumpHeight * -2f * Physics.gravity.y);
        }

        public override void Tick(float deltaTime)
        {
            stateMachine.VelocityY += Physics.gravity.y * deltaTime;

            Vector2 input = stateMachine.Input.MoveInput;
            Vector3 inputDir = new Vector3(input.x, 0, input.y).normalized;
            Vector3 moveDirection = stateMachine.Cam != null ? stateMachine.Cam.PlanarRotation * inputDir : inputDir;

            Vector3 velocity = moveDirection * jumpSpeed;
            velocity.y = stateMachine.VelocityY;

            stateMachine.Controller.Move(velocity * deltaTime);

            if (stateMachine.VelocityY <= 0f)
            {
                stateMachine.SwitchState(new PlayerFallState(stateMachine, jumpSpeed));
            }
        }

        public override void PhysicsTick(float fixedDeltaTime) {}
        public override void Exit() {}
    }
}