The real movement refactor (#9645)

* The real movement refactor

* ref events

* Jetpack cleanup

* a

* Vehicles partially working

* Balance tweaks

* Restore some shitcode

* AAAAAAAA

* Even more prediction

* ECS compstate trying to fix this

* yml

* vehicles kill me

* Don't lock keys

* a

* Fix problem

* Fix sounds

* shuttle inputs

* Shuttle controls

* space brakes

* Keybinds

* Fix merge

* Handle shutdown

* Fix keys

* Bump friction

* fix buckle offset

* Fix relay and friction

* Fix jetpack turning

* contexts amirite

Content.Shared/Movement/Components/MovementSpeedModifierComponent.cs

@@ -3,12 +3,27 @@ using Robust.Shared.GameStates;
 
 namespace Content.Shared.Movement.Components
 {
+    /// <summary>
+    /// Applies basic movement speed and movement modifiers for an entity.
+    /// If this is not present on the entity then they will use defaults for movement.
+    /// </summary>
     [RegisterComponent]
     [NetworkedComponent, Access(typeof(MovementSpeedModifierSystem))]
     public sealed class MovementSpeedModifierComponent : Component
     {
-        public const float DefaultBaseWalkSpeed = 3.0f;
-        public const float DefaultBaseSprintSpeed = 5.0f;
+        // Weightless
+        public const float DefaultMinimumFrictionSpeed = 0.005f;
+        public const float DefaultWeightlessFriction = 1f;
+        public const float DefaultWeightlessFrictionNoInput = 0.2f;
+        public const float DefaultWeightlessModifier = 0.7f;
+        public const float DefaultWeightlessAcceleration = 1f;
+
+        public const float DefaultAcceleration = 20f;
+        public const float DefaultFriction = 20f;
+        public const float DefaultFrictionNoInput = 20f;
+
+        public const float DefaultBaseWalkSpeed = 2.5f;
+        public const float DefaultBaseSprintSpeed = 4.5f;
 
         [ViewVariables]
         public float WalkSpeedModifier = 1.0f;
@@ -38,6 +53,54 @@ namespace Content.Shared.Movement.Components
             }
         }
 
+        /// <summary>
+        /// Minimum speed a mob has to be moving before applying movement friction.
+        /// </summary>
+        [DataField("minimumFrictionSpeed")]
+        public float MinimumFrictionSpeed = DefaultMinimumFrictionSpeed;
+
+        /// <summary>
+        /// The negative velocity applied for friction when weightless and providing inputs.
+        /// </summary>
+        [DataField("weightlessFriction")]
+        public float WeightlessFriction = DefaultWeightlessFriction;
+
+        /// <summary>
+        /// The negative velocity applied for friction when weightless and not providing inputs.
+        /// This is essentially how much their speed decreases per second.
+        /// </summary>
+        [DataField("weightlessFrictionNoInput")]
+        public float WeightlessFrictionNoInput = DefaultWeightlessFrictionNoInput;
+
+        /// <summary>
+        /// The movement speed modifier applied to a mob's total input velocity when weightless.
+        /// </summary>
+        [DataField("weightlessModifier")]
+        public float WeightlessModifier = DefaultWeightlessModifier;
+
+        /// <summary>
+        /// The acceleration applied to mobs when moving and weightless.
+        /// </summary>
+        [DataField("weightlessAcceleration")]
+        public float WeightlessAcceleration = DefaultWeightlessAcceleration;
+
+        /// <summary>
+        /// The acceleration applied to mobs when moving.
+        /// </summary>
+        [DataField("acceleration")]
+        public float Acceleration = DefaultAcceleration;
+
+        /// <summary>
+        /// The negative velocity applied for friction.
+        /// </summary>
+        [DataField("friction")]
+        public float Friction = DefaultFriction;
+
+        /// <summary>
+        /// The negative velocity applied for friction.
+        /// </summary>
+        [DataField("frictionNoInput")] public float? FrictionNoInput = null;
+
         [DataField("baseWalkSpeed")]
         public float BaseWalkSpeed { get; set; } = DefaultBaseWalkSpeed;