cirnogodot/Scripts/Components/Actors/3D/EnemyDropModule3D.cs

using Cirno.Scripts.Components.FSM;
using Cirno.Scripts.Components.FSM.Enemy._3D;
using Cirno.Scripts.Enums;
using Cirno.Scripts.Resources;
using Cirno.Scripts.Resources.Loot;
using Godot;

namespace Cirno.Scripts.Components.Actors._3D;

public partial class EnemyDropModule3D : ModuleBase<EnemyState, CharacterBody3D>
{
    [Export] public EnemyStorage3D StorageModule { get; private set; }

    /// <summary>Radius of the circle in which dropped items are scattered uniformly.</summary>
    [Export] public float LootScatterRadius { get; set; } = 1.0f;
    /// <summary>Initial upward speed applied to each dropped item so it pops up before falling.</summary>
    [Export] public float LootLaunchUpSpeed { get; set; } = 3.0f;

    private bool _initialized = false;
    private bool _enabled = false;

    private RandomNumberGenerator _rng = new();

    public override void EnterState(EnemyState state)
    {
        _enabled = true;

        LootDropHelper.SpawnDrops(
            StorageModule.LootDrops,
            _machine.MainObject,
            _machine.MainObject.GlobalPosition,
            LootScatterRadius,
            LootLaunchUpSpeed,
            _rng);
    }

    public override void ExitState(EnemyState state)
    {
        _enabled = false;
    }

    private IStateMachine<EnemyState, CharacterBody3D> _machine;

    public override void Init(IStateMachine<EnemyState, CharacterBody3D> machine)
    {
        if (_initialized) return;

        _machine = machine;
    }

    public override void Process(double delta)
    {
    }

    public override void PhysicsProcess(double delta)
    {
    }
}