MultipleProjectileWeapon

using Assets.Scripts.Enemies;
using Assets.Scripts.Helpers;
using System.Linq;
using UnityEngine;

namespace Assets.Scripts.Weapons
{
    internal class MultipleProjectileWeapon : SingleProjectileWeapon
    {
        [SerializeField] protected float _fanAngle = 10f;

        public override void Attack(EnemyCharacter target)
        {
            if (target == null) return;

            float projectileAngle = 0f;
            for (int i = 0; i < Properties.Amount; i++)
            {
                var projectile = RequestProjectile();
                Vector3 projectileDirection = MyMathHelper.CalculateOffsetDirection(transform.position, target.transform.position, projectileAngle);
                projectile.MoveTowards(projectileDirection);

                // Alternate projectile placement (above, below, above, below, ...) the first projectile
                if (i % 2 == 0) projectileAngle -= _fanAngle;
                projectileAngle *= -1;
            }

            _weaponCooldownTimer.StartTimer();
        }

        public override void AttackMany(EnemyCharacter[] targets)
        {
            if (targets.Length == 0) return;

            // how many targets *can* I aquire? (rounded down for safety)
            var selection = targets.Take(Mathf.FloorToInt(Properties.Amount)).ToArray();
            foreach (var target in selection)
            {
                // send a projectile to each individual target:
                var projectile = RequestProjectile();
                Vector3 direction = target.transform.position - transform.position;
                projectile.MoveTowards(direction);
            }

            _weaponCooldownTimer.StartTimer();
        }
    }
}