crystall-punk-14/Content.Shared/_CP14/MagicSpell/CP14SharedMagicSystem.Checks.cs

using Content.Shared._CP14.MagicSpell.Components;
using Content.Shared._CP14.MagicSpell.Events;
using Content.Shared.Damage.Components;
using Content.Shared.Hands.Components;
using Content.Shared.Popups;
using Content.Shared.Speech.Muting;

namespace Content.Shared._CP14.MagicSpell;

public abstract partial class CP14SharedMagicSystem
{
    private void InitializeChecks()
    {
        SubscribeLocalEvent<CP14MagicEffectSomaticAspectComponent, CP14CastMagicEffectAttemptEvent>(OnSomaticCheck);
        SubscribeLocalEvent<CP14MagicEffectVerbalAspectComponent, CP14CastMagicEffectAttemptEvent>(OnVerbalCheck);
        SubscribeLocalEvent<CP14MagicEffectManaCostComponent, CP14CastMagicEffectAttemptEvent>(OnManaCheck);
        SubscribeLocalEvent<CP14MagicEffectStaminaCostComponent, CP14CastMagicEffectAttemptEvent>(OnStaminaCheck);

        //Verbal speaking
        SubscribeLocalEvent<CP14MagicEffectVerbalAspectComponent, CP14StartCastMagicEffectEvent>(OnVerbalAspectStartCast);
        SubscribeLocalEvent<CP14MagicEffectVerbalAspectComponent, CP14MagicEffectConsumeResourceEvent>(OnVerbalAspectAfterCast);
    }

    /// <summary>
    /// Before using a spell, a mana check is made for the amount of mana to show warnings.
    /// </summary>
    private void OnManaCheck(Entity<CP14MagicEffectManaCostComponent> ent, ref CP14CastMagicEffectAttemptEvent args)
    {
        var requiredMana = CalculateManacost(ent, args.Performer);

        if (!_magicEffectQuery.TryComp(ent, out var magicEffect))
            return;

        if (magicEffect.SpellStorage is not null)
        {
            if (_magicContainerQuery.TryComp(magicEffect.SpellStorage, out var magicContainer)) // We have item that provides this spell
                requiredMana = MathF.Max(0, (float)(requiredMana - magicContainer.Energy));
        }

        if (requiredMana > 0 && _magicContainerQuery.TryComp(args.Performer, out var playerMana))
        {
            if (!_magicEnergy.HasEnergy(args.Performer, requiredMana, playerMana, true) && _net.IsServer)
            {
                _popup.PopupEntity(Loc.GetString("cp14-magic-spell-not-enough-mana-cast-warning-"+_random.Next(5)), args.Performer, args.Performer, PopupType.SmallCaution);
            }
        }
    }

    private void OnStaminaCheck(Entity<CP14MagicEffectStaminaCostComponent> ent, ref CP14CastMagicEffectAttemptEvent args)
    {
        if (!TryComp<StaminaComponent>(args.Performer, out var staminaComp))
            return;

        if (staminaComp.Critical)
        {
            args.PushReason(Loc.GetString("cp14-magic-spell-stamina-not-enough"));
            args.Cancel();
            return;
        }
    }

    private void OnSomaticCheck(Entity<CP14MagicEffectSomaticAspectComponent> ent, ref CP14CastMagicEffectAttemptEvent args)
    {
        if (TryComp<HandsComponent>(args.Performer, out var hands) || hands is not null)
        {
            var freeHand = 0;
            foreach (var hand in hands.Hands)
            {
                if (hand.Value.IsEmpty)
                    freeHand++;
            }
            if (freeHand >= ent.Comp.FreeHandRequired)
                return;
        }
        args.PushReason(Loc.GetString("cp14-magic-spell-need-somatic-component"));
        args.Cancel();
    }

    private void OnVerbalCheck(Entity<CP14MagicEffectVerbalAspectComponent> ent, ref CP14CastMagicEffectAttemptEvent args)
    {
        if (HasComp<MutedComponent>(args.Performer))
        {
            args.PushReason(Loc.GetString("cp14-magic-spell-need-verbal-component"));
            args.Cancel();
        }
    }

    private void OnVerbalAspectStartCast(Entity<CP14MagicEffectVerbalAspectComponent> ent, ref CP14StartCastMagicEffectEvent args)
    {
        var ev = new CP14VerbalAspectSpeechEvent
        {
            Performer = args.Performer,
            Speech = ent.Comp.StartSpeech,
        };
        RaiseLocalEvent(ent, ref ev);
    }

    private void OnVerbalAspectAfterCast(Entity<CP14MagicEffectVerbalAspectComponent> ent, ref CP14MagicEffectConsumeResourceEvent args)
    {
        if (_net.IsClient)
            return;

        var ev = new CP14VerbalAspectSpeechEvent
        {
            Performer = args.Performer,
            Speech = ent.Comp.EndSpeech,
        };
        RaiseLocalEvent(ent, ref ev);
    }

}