cirnogodot/Scripts/Components/BulletSpawner.cs

using System;
using System.Collections.Generic;
using Cirno.Scripts.Resources;
using Cirno.Scripts.Weapons;
using Godot;
using Godot.Collections;

namespace Cirno.Scripts.Components;

public partial class BulletSpawner : Node2D
{
    [Export] public PackedScene BulletScene;
    private GameManager _gameManager;

    public override void _Ready()
    {
        _gameManager = this.GetGameManager();
    }

    public void SpawnBullet(BulletInfo bulletInfo)
    {
        var bulletScene = bulletInfo.BulletScene ?? BulletScene;
        Bullet bullet;

        for (int i = 0; i < bulletInfo.BulletCount; i++)
        {
            if (bulletInfo.IsLaser)
                bullet = this.CreateChildOf<LaserBullet>(_gameManager.BulletsContainer, bulletScene, bulletInfo.Position);
            else
                bullet = this.CreateChildOf<Bullet>(_gameManager.BulletsContainer, bulletScene, bulletInfo.Position);

            // var bullet = this.CreateChildOf<Bullet>(_gameManager.BulletsContainer, bulletInfo.BulletScene ?? BulletScene, bulletInfo.Position);

            bullet.Initialize(bulletInfo, _gameManager);

            float modifiedSpeed = bulletInfo.Modifier?.ModifySpeed(bulletInfo.Speed, i, bulletInfo.BulletCount) ?? bulletInfo.Speed;
            bullet.Speed = modifiedSpeed;

            Vector2 baseDirection = bulletInfo.Direction == Vector2.Zero ? Vector2.Right : bulletInfo.Direction.Normalized();
            float baseAngle = Mathf.Atan2(baseDirection.Y, baseDirection.X);

            float offsetRadians = Mathf.DegToRad(bulletInfo.RotationOffset);
            float spreadStep = Mathf.DegToRad(bulletInfo.Spread) / Mathf.Max(1, bulletInfo.BulletCount - 1); // Ensure proper spread spacing, also add 1 if 0
            float angle = baseAngle + offsetRadians + (spreadStep * i);
            // float angle = baseAngle + Mathf.DegToRad(bulletInfo.RotationOffset + (bulletInfo.Spread / bulletInfo.BulletCount) * i);

            Vector2 bulletDirection = new Vector2(Mathf.Cos(angle), Mathf.Sin(angle));

            bullet.SetDirection(bulletDirection);
        }
    }

    public void SpawnBullet(Vector2 position, Vector2 direction, float speed, BulletOwner owner, int count = 1, float angleOffset = 0, float spread = 0, PackedScene bulletScene = null, IBulletModifier modifier = null)
    {
        for (int i = 0; i < count; i++)
        {
            var bullet = this.CreateChildOf<Bullet>(_gameManager.BulletsContainer, bulletScene ?? BulletScene, position);

            //var bullet = BulletScene.Instantiate<Bullet>();
            bullet.Position = position;
            //bullet.Speed = speed;

            float modifiedSpeed = modifier?.ModifySpeed(speed, i, count) ?? speed;
            bullet.Speed = modifiedSpeed;

            Vector2 baseDirection = direction == Vector2.Zero ? Vector2.Right : direction.Normalized();
            float baseAngle = Mathf.Atan2(baseDirection.Y, baseDirection.X);
            //float angle = angleOffset + (360 / count) * i;
            float angle = baseAngle + Mathf.DegToRad(angleOffset + (spread / count) * i);
            Vector2 bulletDirection = new Vector2(Mathf.Cos(angle), Mathf.Sin(angle));
            //Vector2 bulletDirection = new Vector2(Mathf.Cos(Mathf.DegToRad(angle)), Mathf.Sin(Mathf.DegToRad(angle)));

            bullet.SetDirection(bulletDirection);
            //GetParent().AddChild(bullet);
        }
    }

    public void SpawnTargetedBullet(Vector2 position, Vector2 target, float speed, BulletOwner owner, PackedScene bulletScene = null, int burstCount = 1, float spread = 0, IBulletModifier modifier = null)
    {
        Vector2 direction = (target - position).Normalized();
        SpawnBullet(position, direction, speed, owner, burstCount, spread: spread, bulletScene: bulletScene, modifier: modifier);
    }
}

public class BulletInfo
{
    public Vector2 Position { get; set; }
    public Vector2 Direction { get; set; }
    public float Speed { get; set; }
    public float LifeTime { get; set; }
    public bool DestroyOnCollision { get; set; }
    public BulletOwner Owner { get; set; }
    public DamageType DamageType { get; set; }
    public float Damage { get; set; }
    public int BulletCount { get; set; }
    public float RotationSpeed { get; set; }
    public float RotationOffset { get; set; }
    //public double Time { get; set; }
    public float Spread { get; set; }
    public bool RotateSprite { get; set; } = false;
    public bool Controllabe { get; set; } = false;
    public bool Freezable { get; set; } = true;
    public PackedScene BulletScene { get; set; }
    public PackedScene DestructionParticlesScene { get; set; }
    public IBulletModifier Modifier { get; set; }
    public List<TimeModifier> TimeModifiers { get; set; } = new List<TimeModifier>();
    
    public bool Grazeable { get; set; }
    public float GrazeValue { get; set; }

    #region Laser
    public bool IsLaser { get; set; }
    public float SpawnDelay { get; set; } = 0.3f; // Delay before beam appears
    public float PreFireTime { get; set; } = 0.5f; // Time before laser becomes lethal
    public float LethalTime { get; set; } = 1.5f; // Time laser remains lethal
    public Color PreFireColor { get; set; } = new Color(1, 0, 0, 0.5f); // Thin red beam
    public Color LethalColor { get; set; } = new Color(1, 0, 0, 1.0f); // Thicker beam
    #endregion
}