cirnogodot/Scripts/Actors/Boss.cs

using Cirno.Scripts.Resources;
using Godot;
using Godot.Collections;

namespace Cirno.Scripts.Actors;

public partial class Boss : Enemy, IActivable
{
    [Export] private Array<BossPhase> Phases;
    private int currentPhaseIndex = 0;

    private bool _started = false;

    private GameManager _gameManager;

    private Vector2 _homePosition;
    public Vector2 HomePosition => _homePosition;
    
    public GameManager GameManager => _gameManager;
    
    private BossPhase CurrentPhase => Phases[currentPhaseIndex];
    
    public override void _Ready()
    {
        base._Ready();
        _gameManager = GetNode<GameManager>("/root/GameScene");

        _homePosition = this.GlobalPosition;
        
        
    }

    public override void _Process(double delta)
    {
        base._Process(delta);

        if (!_started) return;
        
        CurrentPhase.UpdatePhase(delta);
        if (_currentHealth <= CurrentPhase.Threshold && currentPhaseIndex + 1 < Phases.Count)
        {
            currentPhaseIndex++;
            StartPhase(CurrentPhase);
        }
        
    }
    
    private void StartPhase(BossPhase phase)
    {
        phase.Start(this);
    }

    public void TakeDamage(int amount)
    {
        if (!_started) return;
        
        _currentHealth -= amount;
    }

    public void Activate(ActivationType activationType = ActivationType.Toggle)
    {
        _started = true;
        StartPhase(CurrentPhase);
    }
}