cirnogodot/Scripts/Resources/BossPhase.cs

using Cirno.Scripts.Actors;
using Godot;
using Godot.Collections;

namespace Cirno.Scripts.Resources;

[GlobalClass]
public partial class BossPhase : Resource
{
    [Export] public int Threshold;
    [Export] public bool PlayAnimation;
    [Export] public Array<AttackPattern> Patterns;

    private int currentPatternIndex = 0;
    private double patternTimer;

    public void Start(Boss boss)
    {
        currentPatternIndex = 0;
        Patterns[currentPatternIndex].Start(boss);
    }

    public void UpdatePhase(double delta)
    {
        patternTimer += delta;
        var currentPattern = Patterns[currentPatternIndex];

        currentPattern.UpdatePattern(delta);

        if (!currentPattern.WaitForCompletion || currentPattern.IsComplete())
        {
            currentPatternIndex = (currentPatternIndex + 1) % Patterns.Count;
            Patterns[currentPatternIndex].Start(currentPattern.Boss);
        }
    }
}