namespace BaseGames.Combat.StatusEffects
{
    /// <summary>
    /// 燃烧效果（架构 06_CombatModule §11）。
    /// 规则：不可叠加（MaxStacks = 1）；重复施加刷新持续时间；每 0.5 秒造成 1 点 True 伤害。
    /// </summary>
    public class FireEffect : StatusEffect
    {
        private const float BaseDuration  = 3.0f;  // 持续 3 秒
        private const float DotInterval   = 0.5f;  // 每 0.5 秒一次

        public override StatusEffectType EffectType      => StatusEffectType.Fire;
        public override int              MaxStacks        => 1;
        /// <summary>施加燃烧时移除冻结（火冰互斥）。</summary>
        public override StatusEffectType[] MutualExclusions => new[] { StatusEffectType.Freeze };

        public FireEffect()
        {
            TickInterval = DotInterval;
        }

        public override void OnApply(StatusEffectManager owner)
        {
            base.OnApply(owner);
            owner.SetShaderParam("_FireGlow", 1f);
        }

        /// <summary>每次 DoT Tick 造成 1 点 True 伤害（绕过护盾，无敌帧不免疫）。</summary>
        public override void OnTick()
        {
            var info = new DamageInfo.Builder()
                .SetRaw(1)
                .SetType(DamageType.True)
                .SetFlags(DamageFlags.IgnoreIFrame)
                .Build();
            Owner?.ApplyDirectDamage(info);
        }

        public override void OnExpire()
        {
            Owner?.SetShaderParam("_FireGlow", 0f);
        }

        protected override float GetBaseDuration() => BaseDuration;
        public override  string  GetDisplayName()  => "燃烧";
    }
}