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

using Cirno.Scripts.Enums;
using Godot;

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

public partial class Idle : EnemyStateBase3D
{
    public override EnemyState StateId => EnemyState.Idle;
    
    [Export] public EnemyStorage3D Storage  { get; private set; }
    [Export] public PlayerDetection3D PlayerDetection { get; private set; }

    [Export] public bool DebugEnabled { get; set; } = false;
    
    private bool _isPlayerInRange = false;
    
    public override void EnterState()
    {
        base.EnterState();
        PlayerDetection.SetRange(Storage.Root.EnemyResource.PlayerDetectionRange);
        
        _isPlayerInRange = PlayerDetection.IsPlayerInRange(Storage.Root.EnemyResource.ViewRange);
        
        PlayerDetection.PlayerInRange += PlayerDetectionOnPlayerInRange;
        
        PlayerDetection.PlayerOutOfRange += PlayerDetectionOnPlayerOutOfRange;
        
        // player detection
        // damage receiver will be a module
        GD.Print("Entered Idle");
    }
    
    public override void ExitState()
    {
        base.ExitState();

        PlayerDetection.PlayerInRange -= PlayerDetectionOnPlayerInRange;
        
        PlayerDetection.PlayerOutOfRange -= PlayerDetectionOnPlayerOutOfRange;
        
        // DamageReceiver.HealthProvider.ResourceDepleted -= HealthProviderOnResourceDepleted;
        //
        // DamageReceiver.HealthProvider.ResourceDecreased -= HealthProviderOnResourceDecreased;
        // DamageReceiver.ChangeState(false);
        
    }
    
    private void HealthProviderOnResourceDepleted()
    {
        ChangeState(EnemyState.Dead);
    }
    
    private void HealthProviderOnResourceDecreased(float oldvalue, float newvalue, float maxvalue)
    {
        Storage.AiState = AiState.Enabled;
        ChangeState(EnemyState.Alert);
    }

    private void PlayerDetectionOnPlayerInRange()
    {
        _isPlayerInRange = true;
        GD.Print("Player In Range");
    }
    
    private void PlayerDetectionOnPlayerOutOfRange()
    {
        _isPlayerInRange = false;
    }
    
    public override void PhysicsProcessState(double delta)
    {
        base.PhysicsProcessState(delta);
        if (Storage.AiState is AiState.Enabled && _isPlayerInRange)
        {
            if (PlayerDetection.IsPlayerInSight())
            {
                GD.Print("Moving to alert");
                StateMachine.SetState(EnemyState.Alert);
            }
        }

        if (DebugEnabled)
        {
            DebugDraw3D.DrawText(MainObject.GlobalPosition - new Vector3(0,16,0), "Idle");
            
        }
    }
    
    public override void ProcessState(double delta)
    {
        base.ProcessState(delta);
    }
}