using Godot;
using GdUnit4;
using static GdUnit4.Assertions;
using Movementtests.interfaces;

namespace Movementtests.tests;

[TestSuite, RequireGodotRuntime]
public class KnockbackComponentUnitTest
{
    [TestCase]
    public void RegisterAndComputeKnockback_Works_And_Resets()
    {
        var cKnock = new CKnockback();
        cKnock.RKnockback = new RKnockback(2.0f);
        cKnock.GlobalPosition = Vector3.Zero;

        var damage = new DamageRecord(new Vector3(10, 0, 0), new RDamage(0, Movementtests.systems.damage.EDamageTypes.Normal));
        var record = new KnockbackRecord(damage, 1.5f);

        cKnock.RegisterKnockback(record);
        var force = cKnock.ComputeKnockback();

        // Direction from source(10,0,0) to target(0,0,0) is (-1,0,0), scaled by modifier(2) and multiplier(1.5) => (-3,0,0)
        AssertVector(force).IsEqual(new Vector3(-3, 0, 0));

        // Second call returns zero since internal state resets
        var second = cKnock.ComputeKnockback();
        AssertVector(second).IsEqual(Vector3.Zero);
    }
}