cirnogodot/Scripts/AttackPatterns/SpiralPattern.cs

using Cirno.Scripts.Actors;
using Cirno.Scripts.Components;
using Cirno.Scripts.Resources;
using Godot;

namespace Cirno.Scripts.AttackPatterns;

[GlobalClass]
public partial class SpiralPattern : AttackPattern
{
    [Export] public PackedScene BulletScene;
    [Export] private float bulletSpeed = 5f;
    [Export] private int bulletCount = 16;
    [Export] private float rotationSpeed = 90f;
    [Export] private float duration = 5f;
    [Export] private float burstInterval = 0.5f;
    [Export] private float spread = 360f;
    [Export] private BulletOwner owner = BulletOwner.Enemy;

    private double timer;
    private double burstTimer;
    private BulletSpawner spawner;

    public override void Start(Boss boss)
    {
        Boss = boss;
        timer = 0;
        burstTimer = burstInterval; // start immediately
        spawner = boss.GetNode<BulletSpawner>("BulletSpawner");
    }

    public override void UpdatePattern(double delta)
    {
        timer += delta;
        burstTimer += delta;
        if (timer < duration && burstTimer >= burstInterval)
        {
            spawner.SpawnSpiralPattern(Boss.GlobalPosition, bulletSpeed, owner, bulletCount, rotationSpeed, timer, spread, BulletScene);
            burstTimer = 0;
        }
    }

    public override bool IsComplete()
    {
        return timer >= duration;
    }
}