cirnogodot/Scripts/Components/Actors/PlayerWeaponProvider.cs

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

namespace Cirno.Scripts.Components.Actors;

public partial class PlayerWeaponProvider : Node2D
{
    [Export] public PackedScene WeaponTemplate { get; private set; }
    public Array<Weapon> EquippedWeapons { get; set; } = new Array<Weapon>();
    public int CurrentWeaponIndex { get; set; } = 0;

    private InventoryManager _inventoryManager;

    public Weapon EquippedWeapon { get; set; }

    private CharacterBody2D _parent;

    //public Vector2 FacingDirection 

    public override void _Ready()
    {

    }

    public void Init(CharacterBody2D parent)
    {
        _parent = parent;

        _inventoryManager = this.GetInventoryManager();

        _inventoryManager.WeaponEquip += this.EquipWeapon;

        _inventoryManager.ItemAdded += (LootItem item, int amount) =>
            {
                if (item.Item == ItemTypes.Weapon)
                {
                    SpawnPlayerWeapon(item);
                }
            };
    }

    public void AddWeapon(Weapon weapon)
    {
        EquippedWeapons.Add(weapon);
    }

    public void EquipWeapon(string itemKey)
    {
        if (string.IsNullOrWhiteSpace(itemKey)) return;
        var weapon = EquippedWeapons.FirstOrDefault(x => x.WeaponData.ItemKey == itemKey);

        if (weapon is null) return;

        EquipWeapon(weapon);
    }

    // Triggered by event in inventorymanager
    public void EquipWeapon(Weapon weapon)
    {
        EquippedWeapon = weapon;
        CurrentWeaponIndex = EquippedWeapons.IndexOf(weapon);
    }

    public void NextWeapon()
    {
        CurrentWeaponIndex += 1;
        if (CurrentWeaponIndex > EquippedWeapons.Count - 1)
        {
            CurrentWeaponIndex = EquippedWeapons.Count - 1;
        }

        EquipWeapon(EquippedWeapons[CurrentWeaponIndex]);
    }

    public void PreviousWeapon()
    {
        CurrentWeaponIndex -= 1;
        if (CurrentWeaponIndex < 0)
        {
            CurrentWeaponIndex = 0;
        }

        EquipWeapon(EquippedWeapons[CurrentWeaponIndex]);
    }

    public void Shoot(Vector2 direction)
    {
        if (EquippedWeapon == null) return;


        EquippedWeapon.ShootDirection = direction;
        EquippedWeapon.Shoot();
    }

    private void SpawnPlayerWeapon(LootItem startingItem)
    {
        if (WeaponTemplate == null)
        {
            GD.Print("Could not spawn weapon because template is null");
            return;
        }

        var weapon = this.CreateSibling<Weapon>(WeaponTemplate);
        weapon.WeaponData = startingItem.WeaponData;

        this.AddWeapon(weapon);

        if (this.EquippedWeapon == null)
        {
            this.EquipWeapon(weapon);
        }
    }

}