Thrusters (shuttle go nyoom) (#5352)

Content.Server/Shuttles/Components/ThrusterComponent.cs

@@ -0,0 +1,86 @@
+using System.Collections.Generic;
+using Content.Server.Shuttles.EntitySystems;
+using Content.Shared.Damage;
+using Robust.Shared.Analyzers;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Maths;
+using Robust.Shared.Physics.Collision.Shapes;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.Shuttles.Components
+{
+    [RegisterComponent]
+    [Friend(typeof(ThrusterSystem))]
+    public sealed class ThrusterComponent : Component
+    {
+        public override string Name => "Thruster";
+
+        /// <summary>
+        /// Whether the thruster has been force to be enabled / disable (e.g. VV, interaction, etc.)
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        [DataField("enabled")]
+        public bool Enabled
+        {
+            get => _enabled;
+            set
+            {
+                if (_enabled == value) return;
+                _enabled = value;
+
+                var system = EntitySystem.Get<ThrusterSystem>();
+
+                if (!_enabled)
+                {
+                    system.DisableThruster(OwnerUid, this);
+                }
+                else if (system.CanEnable(OwnerUid, this))
+                {
+                    system.EnableThruster(OwnerUid, this);
+                }
+            }
+        }
+
+        private bool _enabled = true;
+
+        /// <summary>
+        /// This determines whether the thruster is actually enabled for the purposes of thrust
+        /// </summary>
+        public bool IsOn;
+
+        [ViewVariables]
+        [DataField("impulse")]
+        public float Impulse = 5f;
+
+        [ViewVariables]
+        [DataField("thrusterType")]
+        public ThrusterType Type = ThrusterType.Linear;
+
+        [DataField("burnShape")] public List<Vector2> BurnPoly = new()
+        {
+            new Vector2(-0.4f, 0.5f),
+            new Vector2(-0.1f, 1.2f),
+            new Vector2(0.1f, 1.2f),
+            new Vector2(0.4f, 0.5f)
+        };
+
+        /// <summary>
+        /// How much damage is done per second to anything colliding with our thrust.
+        /// </summary>
+        [ViewVariables] [DataField("damage")] public DamageSpecifier? Damage = new();
+
+        // Used for burns
+
+        public List<EntityUid> Colliding = new();
+
+        public bool Firing = false;
+    }
+
+    public enum ThrusterType
+    {
+        Linear,
+        // Angular meaning rotational.
+        Angular,
+    }
+}