using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Saltosion.OneWeapon.Effects;
using Saltosion.OneWeapon.Enemies;
using Saltosion.OneWeapon.Environment;

namespace Saltosion.OneWeapon.Guns {
    public class Bullet : MonoBehaviour {

        public Vector2 Direction;
        public float InitialRotation;
        public bool HasExploded = false;

        public void DoDamage(float Damage, float Intensity, Collider2D Collider, Vector2 Direction) {
            Explodable Explodable = Collider.GetComponent<Explodable>();
            Health Health = Collider.GetComponent<Health>();
            GunDropper VendingMachine = Collider.GetComponent<GunDropper>();
            if (Health != null) {
                Health.Damage(Damage, -Direction, true);
            } else if (VendingMachine != null) {
                VendingMachine.ExpelGun();
            } else if (Explodable != null) {
                Explodable.Explode(true, true);
            } else if (Collider.tag == "Environment") {
                DebrisLauncher.Splatter(DebrisType.Structural, transform.position, Direction, (int)(5 * Intensity), 30 * Intensity, 360);
            }
            if (Collider.attachedRigidbody != null && Collider.attachedRigidbody.bodyType == RigidbodyType2D.Dynamic) {
                Collider.attachedRigidbody.AddForce(Direction * 4 * Intensity, ForceMode2D.Impulse);
            }
        }

        public void DoDamageAOE(float Damage, float Radius, float Intensity) {
            Collider2D[] NearbyColliders = Physics2D.OverlapCircleAll(transform.position, Radius);

            foreach (Collider2D curr in NearbyColliders) {
                Vector2 Delta = (curr.transform.position - transform.position);
                Vector2 Dir = Delta.normalized;
                float ScaledDistance = 1 - Mathf.Clamp((Delta.magnitude - (Radius / 3)) / (Radius - (Radius / 3)), 0, 1);
                this.DoDamage(ScaledDistance * Damage, ScaledDistance * Intensity, curr, Dir);
                if (curr.attachedRigidbody != null && curr.attachedRigidbody.bodyType == RigidbodyType2D.Dynamic) {
                    // FIXME: AcceleratedMovement currently overrides Rigidbody.velocity so this doesn't do anything
                    curr.attachedRigidbody.AddForce(Dir * 10f, ForceMode2D.Impulse);
                }
            }
        }
    }
}