// EnemyManagerCs — 敌人 SoA 热路径 C# 内核（S0 骨架）
// S0 范围：帧时间监控，完整 Boid 积分在 S1 展开
using Godot;
using System;

public partial class EnemyManagerCs : Node
{
    private GodotObject _gdEnemyManager;
    private double _accumMs;
    private int    _frames;

    public override void _Ready()
    {
        _gdEnemyManager = Engine.GetSingleton("EnemyManager");
        // S0 骨架不接管积分，保持 _cs_node = null，让 GDScript fallback 运行
        GD.Print("[EnemyManagerCs] S0 骨架就绪，GDScript fallback 活跞");
    }

    public override void _PhysicsProcess(double delta)
    {
        if (_gdEnemyManager is null) return;
        var t0 = Time.GetTicksUsec();

        var activeCount = _gdEnemyManager.Get("_active_count").AsInt32();
        _ = activeCount;

        _accumMs += (Time.GetTicksUsec() - t0) / 1000.0;
        _frames++;
        if (_frames >= 60)
        {
            GD.Print($"[EnemyManagerCs] 帧时间均倦: {_accumMs / _frames:F3} ms " +
                     $"(active={activeCount} TODO S1: 启用 Boid 热路径)");
            _accumMs = 0; _frames = 0;
        }
    }
}