cirnogodot/Scripts/Resources/PatternGroup.cs

using Godot;
using System.Collections.Generic;
using Cirno.Scripts.Actors;
using Cirno.Scripts.AttackPatterns;
using Godot.Collections;

namespace Cirno.Scripts.Resources;

[GlobalClass]
public partial class PatternGroup : AttackPattern
{
    [Export] private Array<AttackPattern> patterns;
    
    public override IPatternMachine MakeMachine(Node2D parent)
    {
        return new PatternGroupMachine(this, parent);
    }

    public class PatternGroupMachine(PatternGroup pattern, Node2D parent) : IPatternMachine
    {
        public Node2D Parent => parent;
        private int currentPatternIndex = 0;
        
        IPatternMachine _patternMachine;
        
        public void Start()
        {
            currentPatternIndex = 0;
            _patternMachine = pattern.patterns[currentPatternIndex].MakeMachine(parent);
            _patternMachine.Start();
        }

        public void UpdatePattern(double delta)
        {
            if (currentPatternIndex < pattern.patterns.Count)
            {
                _patternMachine.UpdatePattern(delta);
                
                if (!pattern.patterns[currentPatternIndex].WaitForCompletion || _patternMachine.IsComplete())
                {
                    currentPatternIndex++;
                    if (currentPatternIndex < pattern.patterns.Count)
                    {
                        _patternMachine.Start();
                    }
                }
            }
        }

        public bool IsComplete()
        {
            return currentPatternIndex >= pattern.patterns.Count;
        }
        
    }
}