stamina damage resist (#2190)

* someone had to be brave enough to kill this

* it's finally real

* god himself couldn't fix this shit

* 

Content.Server/Weapons/Ranged/Systems/GunSystem.cs

@@ -224,7 +224,7 @@ public override void Shoot(EntityUid gunUid, GunComponent gun, List<(EntityUid?
                     {
                         var hitEntity = lastHit.Value;
                         if (hitscan.StaminaDamage > 0f)
-                            _stamina.TakeStaminaDamage(hitEntity, hitscan.StaminaDamage, source: user);
+                            _stamina.TakeProjectileStaminaDamage(hitEntity, hitscan.StaminaDamage, source: user); // DeltaV - Cope with hitscan not being an entity
 
                         var dmg = hitscan.Damage;
 

Content.Shared/Armor/ArmorComponent.cs

@@ -22,6 +22,37 @@ public sealed partial class ArmorComponent : Component
     /// </summary>
     [DataField]
     public float PriceMultiplier = 1;
+
+    /// <summary>
+    /// DeltaV: The incoming stamina projectile damage will get multiplied by this value.
+    /// </summary>
+    [DataField]
+    public float StaminaDamageCoefficient = 1;
+
+    /// <summary>
+    /// DeltaV: The configured stamina melee damage coefficient. The actual value used
+    /// will be this or the blunt damage coefficient, whichever provides better protection.
+    /// </summary>
+    [DataField]
+    private float _staminaMeleeDamageCoefficient = 1;
+
+    /// <summary>
+    /// DeltaV: Gets or sets the effective stamina melee damage coefficient, using either the configured
+    /// value or the blunt damage coefficient, whichever provides better protection (lower value).
+    /// </summary>
+    [Access(typeof(SharedArmorSystem))]
+    public float StaminaMeleeDamageCoefficient
+    {
+        get
+        {
+            // Try to get the blunt damage coefficient from modifiers
+            var bluntCoefficient = Modifiers.Coefficients.GetValueOrDefault("Blunt", 1.0f);
+
+            // Return whichever provides better protection (lower coefficient)
+            return Math.Min(bluntCoefficient, _staminaMeleeDamageCoefficient);
+        }
+        set => _staminaMeleeDamageCoefficient = value;
+    }
 }
 
 /// <summary>

Content.Shared/Armor/SharedArmorSystem.cs

@@ -40,7 +40,7 @@ private void OnArmorVerbExamine(EntityUid uid, ArmorComponent component, GetVerb
         if (!args.CanInteract || !args.CanAccess)
             return;
 
-        var examineMarkup = GetArmorExamine(component.Modifiers);
+        var examineMarkup = GetArmorExamine(component); // DeltaV - Changed argument type to ArmorComponent
 
         var ev = new ArmorExamineEvent(examineMarkup);
         RaiseLocalEvent(uid, ref ev);
@@ -50,12 +50,13 @@ private void OnArmorVerbExamine(EntityUid uid, ArmorComponent component, GetVerb
             Loc.GetString("armor-examinable-verb-message"));
     }
 
-    private FormattedMessage GetArmorExamine(DamageModifierSet armorModifiers)
+    // DeltaV - Changed to take ArmorComponent instead of DamageModifierSet
+    private FormattedMessage GetArmorExamine(ArmorComponent component)
     {
         var msg = new FormattedMessage();
         msg.AddMarkupOrThrow(Loc.GetString("armor-examine"));
 
-        foreach (var coefficientArmor in armorModifiers.Coefficients)
+        foreach (var coefficientArmor in component.Modifiers.Coefficients) // DeltaV
         {
             msg.PushNewline();
 
@@ -66,7 +67,7 @@ private FormattedMessage GetArmorExamine(DamageModifierSet armorModifiers)
             ));
         }
 
-        foreach (var flatArmor in armorModifiers.FlatReduction)
+        foreach (var flatArmor in component.Modifiers.FlatReduction) // DeltaV
         {
             msg.PushNewline();
 
@@ -77,6 +78,26 @@ private FormattedMessage GetArmorExamine(DamageModifierSet armorModifiers)
             ));
         }
 
+        // DeltaV - Add stamina resistance information if it differs from default
+        if (!MathHelper.CloseTo(component.StaminaDamageCoefficient, 1.0f))
+        {
+            msg.PushNewline();
+            var reduction = (1 - component.StaminaDamageCoefficient) * 100;
+            msg.AddMarkupOrThrow(Loc.GetString("armor-stamina-projectile-coefficient-value",
+                ("value", MathF.Round(reduction, 1))
+            ));
+        }
+
+        if (!MathHelper.CloseTo(component.StaminaMeleeDamageCoefficient, 1.0f))
+        {
+            msg.PushNewline();
+            var reduction = (1 - component.StaminaMeleeDamageCoefficient) * 100;
+            msg.AddMarkupOrThrow(Loc.GetString("armor-stamina-melee-coefficient-value",
+                ("value", MathF.Round(reduction, 1))
+            ));
+        }
+        // End DeltaV
+
         return msg;
     }
 }

Content.Shared/Damage/Systems/StaminaSystem.cs

@@ -168,7 +168,8 @@ private void OnMeleeHit(EntityUid uid, StaminaDamageOnHitComponent component, Me
 
         foreach (var (ent, comp) in toHit)
         {
-            TakeStaminaDamage(ent, damage / toHit.Count, comp, source: args.User, with: args.Weapon, sound: component.Sound);
+            // DeltaV - Stamina damage coefficient
+            TakeMeleeStaminaDamage(ent, damage, comp, source: args.User, with: args.Weapon, sound: component.Sound);
         }
     }
 
@@ -202,7 +203,8 @@ private void OnCollide(EntityUid uid, StaminaDamageOnCollideComponent component,
         if (ev.Cancelled)
             return;
 
-        TakeStaminaDamage(target, component.Damage, source: uid, sound: component.Sound);
+        // DeltaV - Stamina damage coefficient
+        TakeProjectileStaminaDamage(target, component.Damage, source: uid, sound: component.Sound);
     }
 
     private void SetStaminaAlert(EntityUid uid, StaminaComponent? component = null)

Content.Shared/DeltaV/Damage/StaminaSystem.Resist.cs

@@ -0,0 +1,99 @@
+using Content.Shared.Armor;
+using Content.Shared.Damage.Components;
+using Content.Shared.Inventory;
+using Robust.Shared.Audio;
+
+namespace Content.Shared.Damage.Systems;
+
+public sealed partial class StaminaSystem
+{
+    [Dependency] private readonly InventorySystem _inventory = default!;
+
+    /// <summary>
+    /// Gets the combined stamina protection coefficients from all armor worn by an entity
+    /// </summary>
+    private float GetMeleeCoefficient(EntityUid target)
+    {
+        var coefficient = 1.0f;
+
+        if (!_inventory.TryGetSlots(target, out var slots))
+            return coefficient;
+
+        foreach (var slot in slots)
+        {
+            if (!_inventory.TryGetSlotEntity(target, slot.Name, out var equipped))
+                continue;
+
+            if (TryComp<ArmorComponent>(equipped, out var armor))
+            {
+                coefficient *= armor.StaminaMeleeDamageCoefficient;
+            }
+        }
+
+        return coefficient;
+    }
+
+    /// <summary>
+    /// Gets the combined stamina protection coefficients from all armor worn by an entity
+    /// </summary>
+    private float GetProjectileCoefficient(EntityUid target)
+    {
+        var coefficient = 1.0f;
+
+        if (!_inventory.TryGetSlots(target, out var slots))
+            return coefficient;
+
+        foreach (var slot in slots)
+        {
+            if (!_inventory.TryGetSlotEntity(target, slot.Name, out var equipped))
+                continue;
+
+            if (TryComp<ArmorComponent>(equipped, out var armor))
+            {
+                coefficient *= armor.StaminaDamageCoefficient;
+            }
+        }
+
+        return coefficient;
+    }
+
+    /// <summary>
+    /// Applies stamina damage from melee attacks with armor resistance calculations
+    /// </summary>
+    public void TakeMeleeStaminaDamage(EntityUid target,
+        float damage,
+        StaminaComponent? stamina = null,
+        EntityUid? source = null,
+        EntityUid? with = null,
+        bool visual = true,
+        SoundSpecifier? sound = null)
+    {
+        if (!Resolve(target, ref stamina))
+            return;
+
+        var coefficient = GetMeleeCoefficient(target);
+        var finalDamage = damage * coefficient;
+
+        TakeStaminaDamage(target, finalDamage, stamina, source, with, visual, sound);
+    }
+
+    /// <summary>
+    /// Applies stamina damage from projectiles with armor resistance calculations
+    /// </summary>
+    public void TakeProjectileStaminaDamage(EntityUid target,
+        float damage,
+        StaminaComponent? stamina = null,
+        EntityUid? source = null,
+        EntityUid? with = null,
+        bool visual = true,
+        SoundSpecifier? sound = null)
+    {
+        if (!Resolve(target, ref stamina))
+            return;
+
+        var coefficient = GetProjectileCoefficient(target);
+        var finalDamage = damage * coefficient;
+
+        TakeStaminaDamage(target, finalDamage, stamina, source, with, visual, sound);
+    }
+}

Resources/Locale/en-US/deltav/armor/armor-examine.ftl

@@ -0,0 +1,2 @@
+armor-stamina-projectile-coefficient-value = - [color=yellow]Stamina projectile[/color] damage reduced by [color=lightblue]{$value}%[/color].
+armor-stamina-melee-coefficient-value = - [color=yellow]Stamina melee[/color] damage reduced by [color=lightblue]{$value}%[/color].

Resources/Prototypes/DeltaV/Entities/Clothing/OuterClothing/armor.yml

@@ -16,6 +16,7 @@
         Slash: 0.80
         Piercing: 0.50
         Heat: 0.80
+    staminaDamageCoefficient: 0.6 # Decent at stopping disablers
   - type: ClothingSpeedModifier
     walkModifier: 0.90
     sprintModifier: 0.90
@@ -44,6 +45,7 @@
         Slash: 0.60
         Piercing: 0.90
         Heat: 0.90
+    staminaDamageCoefficient: 0.9
   - type: ExplosionResistance # Better than nothing against a blast or shockwave.
     damageCoefficient: 0.90
   - type: AllowSuitStorage
@@ -68,6 +70,7 @@
         Slash: 0.40
         Piercing: 0.70
         Heat: 0.70
+    staminaDamageCoefficient: 0.5
   - type: ClothingSpeedModifier
     walkModifier: 0.75
     sprintModifier: 0.75

Resources/Prototypes/DeltaV/Entities/Clothing/OuterClothing/hardsuits.yml

@@ -23,6 +23,7 @@
         Radiation: 0.75
         Caustic: 0.75
         Heat: 0.75
+    staminaDamageCoefficient: 0.3 # It's a hardsuit, duh
   - type: ClothingSpeedModifier
     walkModifier: 0.75
     sprintModifier: 0.75
@@ -68,6 +69,7 @@
         Radiation: 0.80
         Caustic: 0.80
         Heat: 0.80
+    staminaDamageCoefficient: 0.3 # still a hardsuit
   - type: ClothingSpeedModifier
     walkModifier: 0.85
     sprintModifier: 0.85
@@ -113,6 +115,7 @@
         Radiation: 0.70
         Caustic: 0.70
         Heat: 0.70
+    staminaDamageCoefficient: 0.2
   - type: ClothingSpeedModifier
     walkModifier: 0.65
     sprintModifier: 0.65
@@ -158,6 +161,7 @@
         Radiation: 0.75
         Caustic: 0.75
         Heat: 0.75
+    staminaDamageCoefficient: 0.2
   - type: ClothingSpeedModifier
     walkModifier: 0.80
     sprintModifier: 0.80

Resources/Prototypes/DeltaV/Entities/Clothing/OuterClothing/vests.yml

@@ -67,6 +67,7 @@
         Piercing: 0.5
         Shock: 0.8
         Heat: 0.7
+    staminaDamageCoefficient: 0.6
   - type: ClothingSpeedModifier
     walkModifier: 1.0
     sprintModifier: 0.85

Resources/Prototypes/Entities/Clothing/OuterClothing/armor.yml

@@ -19,6 +19,7 @@
         Slash: 0.70
         Piercing: 0.70 #Can save you, but bullets will still hurt. Will take about 10 shots from a Viper before critting, as opposed to 7 while unarmored and 16~ with a bulletproof vest.
         Heat: 0.80
+    staminaDamageCoefficient: 0.75 # DeltaV - Decent at stopping disablers
   - type: ExplosionResistance
     damageCoefficient: 0.90
 
@@ -122,6 +123,7 @@
         Piercing: 0.35
         Heat: 0.35
         Caustic: 0.5
+    staminaDamageCoefficient: 0.35 # DeltaV
   - type: ExplosionResistance
     damageCoefficient: 0.35
   - type: ClothingSpeedModifier
@@ -209,6 +211,7 @@
         Heat: 0.5
         Radiation: 0
         Caustic: 0.75
+    staminaDamageCoefficient: 0.1 # DeltaV
   - type: GroupExamine
   - type: ProtectedFromStepTriggers
     slots: WITHOUT_POCKET
@@ -275,6 +278,7 @@
         Piercing: 0.6
         Heat: 0.5
         Caustic: 0.9
+    staminaDamageCoefficient: 0.7 # DeltaV - Some protection against disablers, but you're better off with a vest
   - type: ClothingSpeedModifier
     walkModifier: 1.0
     sprintModifier: 1.0