Guitar Smashing (#17724)

Content.Server/Damage/Components/DamageOnHitComponent.cs

@@ -0,0 +1,18 @@
+using Content.Shared.Damage;
+
+
+// Damages the held item by a set amount when it hits someone. Can be used to make melee items limited-use.
+namespace Content.Server.Damage.Components;
+
+[RegisterComponent]
+public sealed class DamageOnHitComponent : Component
+{
+    [DataField("ignoreResistances")]
+    [ViewVariables(VVAccess.ReadWrite)]
+    public bool IgnoreResistances = true;
+
+    [DataField("damage", required: true)]
+    [ViewVariables(VVAccess.ReadWrite)]
+    public DamageSpecifier Damage = default!;
+}
+

Content.Server/Damage/Systems/DamageOnHitSystem.cs

@@ -0,0 +1,22 @@
+using Content.Server.Damage.Components;
+using Content.Shared.Damage;
+using Robust.Shared.Player;
+using Content.Shared.Weapons.Melee.Events;
+
+namespace Content.Server.Damage.Systems;
+
+public sealed class DamageOnHitSystem : EntitySystem
+{
+    [Dependency] private readonly DamageableSystem _damageableSystem = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<DamageOnHitComponent, MeleeHitEvent>(DamageItem);
+    }
+    // Looks for a hit, then damages the held item an appropriate amount.
+    private void DamageItem(EntityUid uid, DamageOnHitComponent component, MeleeHitEvent args)
+    {
+        _damageableSystem.TryChangeDamage(uid, component.Damage, component.IgnoreResistances);
+    }
+}