NPC refactor (#10122)

Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Server/NPC/Components/NPCRangedCombatComponent.cs

@@ -0,0 +1,57 @@
+using Content.Server.NPC.Systems;
+using Robust.Shared.Audio;
+
+namespace Content.Server.NPC.Components;
+
+/// <summary>
+/// Added to an NPC doing ranged combat.
+/// </summary>
+[RegisterComponent]
+public sealed class NPCRangedCombatComponent : Component
+{
+    [ViewVariables]
+    public EntityUid Target;
+
+    [ViewVariables]
+    public CombatStatus Status = CombatStatus.Normal;
+
+    // Most of the below is to deal with turrets.
+
+    /// <summary>
+    /// If null it will instantly turn.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)] public Angle? RotationSpeed;
+
+    /// <summary>
+    /// Maximum distance, between our rotation and the target's, to consider shooting it.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    public Angle AccuracyThreshold = Angle.FromDegrees(30);
+
+    /// <summary>
+    /// How long until the last line of sight check.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    public float LOSAccumulator = 0f;
+
+    /// <summary>
+    ///  Is the target still considered in LOS since the last check.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    public bool TargetInLOS = false;
+
+    /// <summary>
+    /// Delay after target is in LOS before we start shooting.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    public float ShootDelay = 0.2f;
+
+    [ViewVariables(VVAccess.ReadWrite)]
+    public float ShootAccumulator;
+
+    /// <summary>
+    /// Sound to play if the target enters line of sight.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    public SoundSpecifier? SoundTargetInLOS;
+}