cirnogodot/Scripts/Components/FSM/Enemy/3D/EnemyDamageModule3D.cs

using Cirno.Scripts.Components.Actors;
using Cirno.Scripts.Components.Actors._3D;
using Cirno.Scripts.Enums;
using Godot;

namespace Cirno.Scripts.Components.FSM.Enemy._3D;

public partial class EnemyDamageModule3D : ModuleBase<EnemyState, CharacterBody3D>
{
    [Export] public DamageReceiver3D  DamageReceiver { get; private set; }
    [Export] public EnemyStorage3D StorageModule { get; private set; }
    
    [Export] public PlayerAnimationProvider3D AnimationProvider { get; private set; }

    private IStateMachine<EnemyState, CharacterBody3D> _machine;
    public override void EnterState(EnemyState state)
    {
        DamageReceiver.ChangeState(true);
        DamageReceiver.HealthProvider.ResourceDepleted += HealthProviderOnResourceDepleted;
        
        DamageReceiver.HealthProvider.ResourceDecreased += HealthProviderOnResourceDecreased;
    }

    public override void ExitState(EnemyState state)
    {
        DamageReceiver.HealthProvider.ResourceDepleted -= HealthProviderOnResourceDepleted;
        
        DamageReceiver.HealthProvider.ResourceDecreased -= HealthProviderOnResourceDecreased;
        DamageReceiver.ChangeState(false);
    }

    public override void Init(IStateMachine<EnemyState, CharacterBody3D> machine)
    {
        _machine = machine;
    }

    public override void Process(double delta)
    {
        
    }

    public override void PhysicsProcess(double delta)
    {
        
    }
    
    private void HealthProviderOnResourceDecreased(float oldvalue, float newvalue, float maxvalue)
    {
        if (_machine.GetState() is EnemyState.Idle)
        {
            StorageModule.AiState = AiState.Enabled;
            _machine.SetState(EnemyState.Alert);
        }
        
        AnimationProvider.Blink();
    }
    
    private void HealthProviderOnResourceDepleted()
    {
        _machine.SetState(EnemyState.Dead);
    }

}