Weapon Reflection Movement Mechanic

Content.Shared/Weapons/Reflect/ReflectComponent.cs

@@ -32,6 +32,25 @@ public sealed partial class ReflectComponent : Component
 
     [DataField("soundOnReflect")]
     public SoundSpecifier? SoundOnReflect = new SoundPathSpecifier("/Audio/Weapons/Guns/Hits/laser_sear_wall.ogg");
+
+    /// <summary>
+    /// Is the deflection an innate power or something actively maintained? If true, this component grants a flat
+    /// deflection chance rather than a chance that degrades when moving/weightless/stunned/etc.
+    /// </summary>
+    [DataField]
+    public bool Innate = false;
+
+    /// <summary>
+    /// The multiplier used when moving.
+    /// </summary>
+    [DataField]
+    public float MovingProbMultiplier = 0.66f;
+
+    /// <summary>
+    /// The multiplier used when sprinting or when otherwise compromised (e.g. weightless)
+    /// </summary>
+    [DataField]
+    public float SprintingProbMultiplier = 0.33f;
 }
 
 [Flags]

Content.Shared/Weapons/Reflect/ReflectSystem.cs

@@ -1,14 +1,21 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Numerics;
+using Content.Shared.ActionBlocker;
 using Content.Shared.Administration.Logs;
 using Content.Shared.Audio;
+using Content.Shared.Damage.Components;
+using Content.Shared.Damage.Systems;
 using Content.Shared.Database;
+using Content.Shared.Gravity;
 using Content.Shared.Hands;
 using Content.Shared.Inventory;
 using Content.Shared.Inventory.Events;
 using Content.Shared.Item.ItemToggle.Components;
+using Content.Shared.Movement.Components;
+using Content.Shared.Movement.Systems;
 using Content.Shared.Popups;
 using Content.Shared.Projectiles;
+using Content.Shared.Standing;
 using Content.Shared.Weapons.Ranged.Components;
 using Content.Shared.Weapons.Ranged.Events;
 using Robust.Shared.Audio;
@@ -35,6 +42,9 @@ public sealed class ReflectSystem : EntitySystem
     [Dependency] private readonly SharedAudioSystem _audio = default!;
     [Dependency] private readonly SharedTransformSystem _transform = default!;
     [Dependency] private readonly InventorySystem _inventorySystem = default!;
+    [Dependency] private readonly SharedGravitySystem _gravity = default!;
+    [Dependency] private readonly StandingStateSystem _standing = default!;
+    [Dependency] private readonly ActionBlockerSystem _actionBlocker = default!;
 
     public override void Initialize()
     {
@@ -91,16 +101,43 @@ private void OnReflectCollide(EntityUid uid, ReflectComponent component, ref Pro
 
     private bool TryReflectProjectile(EntityUid user, EntityUid reflector, EntityUid projectile, ProjectileComponent? projectileComp = null, ReflectComponent? reflect = null)
     {
+        // Do we have the components needed to try a reflect at all?
         if (!Resolve(reflector, ref reflect, false) ||
             !reflect.Enabled ||
             !TryComp<ReflectiveComponent>(projectile, out var reflective) ||
             (reflect.Reflects & reflective.Reflective) == 0x0 ||
-            !_random.Prob(reflect.ReflectProb) ||
             !TryComp<PhysicsComponent>(projectile, out var physics))
-        {
             return false;
+
+        var reflectChance = reflect.ReflectProb;
+
+        /*
+         *  The rules of deflection are as follows:
+         *  If you innately reflect things via magic, biology etc, you always have a full chance.
+         *  If you are standing up and standing still, you're prepared to deflect and have full chance.
+         *  If you are moving at all, your chance is multiplied by the movingProbMultiplier.
+         *  If you are recklessly sprinting, your chance is instead multiplied by the sprintingProbMultiplier.
+         *  If you floating, your chance is instead multiplied by the sprintingProbMultiplier.
+         *  You cannot deflect if you are knocked down or stunned.
+         */
+
+        if (!reflect.Innate)
+        {
+            if (TryComp<StaminaComponent>(reflector, out var staminaComponent) && staminaComponent.Critical)
+                return false;
+
+            if (_standing.IsDown(reflector))
+                return false;
+
+            if (_gravity.IsWeightless(reflector))
+                reflectChance *= reflect.SprintingProbMultiplier;
+            else if (TryComp<InputMoverComponent>(reflector, out var mover) && (mover.HeldMoveButtons & MoveButtons.AnyDirection) == MoveButtons.AnyDirection)
+                reflectChance *= mover.Sprinting ? reflect.SprintingProbMultiplier : reflect.MovingProbMultiplier;
         }
 
+        if (!_random.Prob(reflectChance))
+            return false;
+
         var rotation = _random.NextAngle(-reflect.Spread / 2, reflect.Spread / 2).Opposite();
         var existingVelocity = _physics.GetMapLinearVelocity(projectile, component: physics);
         var relativeVelocity = existingVelocity - _physics.GetMapLinearVelocity(user);

Resources/Prototypes/Anomaly/behaviours.yml

@@ -84,6 +84,7 @@
   description: anomaly-behavior-reflect
   components:
   - type: Reflect
+    innate: true
     reflectProb: 0.5
     reflects:
       - Energy

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

@@ -96,6 +96,7 @@
         Heat: 0.4 # this technically means it protects against fires pretty well? -heat is just for lasers and stuff, not atmos temperature
   - type: Reflect
     reflectProb: 1
+    innate: true # armor grants a passive shield that does not require concentration to maintain
     reflects:
       - Energy
 

Resources/Prototypes/Entities/Mobs/NPCs/hellspawn.yml

@@ -53,6 +53,7 @@
   - type: Perishable
   - type: Reflect
     reflectProb: 0.7
+    innate: true
     reflects:
       - Energy
   - type: Fixtures

Resources/Prototypes/Entities/Objects/Shields/shields.yml

@@ -313,14 +313,14 @@
   name: mirror shield
   parent: BaseShield
   id: MirrorShield
-  description: Eerily glows red... you hear the geometer whispering
+  description: Eerily glows red. You hear the geometer whispering...
   components:
     - type: Sprite
       state: mirror-icon
     - type: Item
       heldPrefix: mirror
     - type: Reflect
-      reflectProb: 0.95
+      reflectProb: 0.95 # 0.63 when moving, 0.31 when sprinting
       reflects:
         - Energy
     - type: Blocking #Mirror shield reflects heat/laser, but is relatively weak to everything else.
@@ -407,7 +407,7 @@
       color: blue
     - type: Reflect
       enabled: false
-      reflectProb: 0.95
+      reflectProb: 0.95 # 0.63 when moving, 0.31 when sprinting
       reflects:
         - Energy
     - type: Blocking

Resources/Prototypes/Entities/Objects/Weapons/Melee/e_sword.yml

@@ -78,6 +78,7 @@
     malus: 0
   - type: Reflect
     enabled: false
+    reflectProb: 0.3 # 0.2 when moving, 0.1 when sprinting
   - type: IgnitionSource
     temperature: 700
 
@@ -218,7 +219,7 @@
   name: double-bladed energy sword
   parent: EnergySword
   id: EnergySwordDouble
-  description: Syndicate Command Interns thought that having one blade on the energy sword was not enough. This can be stored in pockets.
+  description: Syndicate Command's intern thought that having only one blade on energy swords was not cool enough. This can be stored in pockets.
   components:
   - type: EnergySword
   - type: ItemToggle
@@ -269,7 +270,7 @@
     size: Small
     sprite: Objects/Weapons/Melee/e_sword_double-inhands.rsi
   - type: Reflect
-    reflectProb: .75
+    reflectProb: .75 # 0.5 when moving, 0.25 when sprinting.
     spread: 75
   - type: UseDelay
     delay: 1

Resources/Prototypes/Entities/Objects/Weapons/Melee/sword.yml

@@ -13,12 +13,12 @@
     attackRate: 1.5
     damage:
       types:
-        Slash: 17 #cmon, it has to be at least BETTER than the rest.
+        Slash: 15
     soundHit:
         path: /Audio/Weapons/bladeslice.ogg
   - type: Reflect
     enabled: true
-    reflectProb: .1
+    reflectProb: .3 # 0.2 when moving, 0.1 when sprinting.
     spread: 90
   - type: Item
     size: Normal
@@ -83,6 +83,9 @@
     - Back
     - Belt
   - type: Reflect
+    reflectProb: 0.3
+    movingProbMultiplier: 1.0 # don't punish ninjas for being ninjas
+    sprintingProbMultiplier: 1.0 # it's a ninja weapon. you run around and slice bullets in half
 
 - type: entity
   name: machete
@@ -152,7 +155,7 @@
     wideAnimationRotation: -135
     damage:
       types:
-        Slash: 16
+        Slash: 15
     soundHit:
         path: /Audio/Weapons/bladeslice.ogg
   - type: Item
@@ -164,7 +167,7 @@
   name: The Throngler
   parent: BaseItem
   id: Throngler
-  description: Why would you make this?
+  description: Why would someone make this?
   components:
     - type: Sharp
     - type: Sprite
@@ -185,7 +188,7 @@
         path: /Audio/Effects/explosion_small1.ogg
     - type: Reflect
       enabled: true
-      reflectProb: .25
+      reflectProb: .3 # 0.2 when moving, 0.1 when sprinting
       spread: 90
     - type: Item
       size: Ginormous