Predicted armor (#20560)

Content.Shared/Armor/SharedArmorSystem.cs

@@ -0,0 +1,78 @@
+using Content.Shared.Damage;
+using Content.Shared.Examine;
+using Content.Shared.Inventory;
+using Content.Shared.Silicons.Borgs;
+using Content.Shared.Verbs;
+using Robust.Shared.Utility;
+
+namespace Content.Shared.Armor;
+
+/// <summary>
+/// This handles logic relating to <see cref="ArmorComponent"/>
+/// </summary>
+public abstract class SharedArmorSystem : EntitySystem
+{
+    [Dependency] private readonly ExamineSystemShared _examine = default!;
+
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ArmorComponent, InventoryRelayedEvent<DamageModifyEvent>>(OnDamageModify);
+        SubscribeLocalEvent<ArmorComponent, BorgModuleRelayedEvent<DamageModifyEvent>>(OnBorgDamageModify);
+        SubscribeLocalEvent<ArmorComponent, GetVerbsEvent<ExamineVerb>>(OnArmorVerbExamine);
+    }
+
+    private void OnDamageModify(EntityUid uid, ArmorComponent component, InventoryRelayedEvent<DamageModifyEvent> args)
+    {
+        args.Args.Damage = DamageSpecifier.ApplyModifierSet(args.Args.Damage, component.Modifiers);
+    }
+
+    private void OnBorgDamageModify(EntityUid uid, ArmorComponent component, ref BorgModuleRelayedEvent<DamageModifyEvent> args)
+    {
+        args.Args.Damage = DamageSpecifier.ApplyModifierSet(args.Args.Damage, component.Modifiers);
+    }
+
+    private void OnArmorVerbExamine(EntityUid uid, ArmorComponent component, GetVerbsEvent<ExamineVerb> args)
+    {
+        if (!args.CanInteract || !args.CanAccess)
+            return;
+
+        var examineMarkup = GetArmorExamine(component.Modifiers);
+
+        var ev = new ArmorExamineEvent(examineMarkup);
+        RaiseLocalEvent(uid, ref ev);
+
+        _examine.AddDetailedExamineVerb(args, component, examineMarkup,
+            Loc.GetString("armor-examinable-verb-text"), "/Textures/Interface/VerbIcons/dot.svg.192dpi.png",
+            Loc.GetString("armor-examinable-verb-message"));
+    }
+
+    private FormattedMessage GetArmorExamine(DamageModifierSet armorModifiers)
+    {
+        var msg = new FormattedMessage();
+
+        msg.AddMarkup(Loc.GetString("armor-examine"));
+
+        foreach (var coefficientArmor in armorModifiers.Coefficients)
+        {
+            msg.PushNewline();
+            msg.AddMarkup(Loc.GetString("armor-coefficient-value",
+                ("type", coefficientArmor.Key),
+                ("value", MathF.Round((1f - coefficientArmor.Value) * 100,1))
+                ));
+        }
+
+        foreach (var flatArmor in armorModifiers.FlatReduction)
+        {
+            msg.PushNewline();
+            msg.AddMarkup(Loc.GetString("armor-reduction-value",
+                ("type", flatArmor.Key),
+                ("value", flatArmor.Value)
+                ));
+        }
+
+        return msg;
+    }
+}