Turrets and grenades can hit prone people [port] (#2910)

* ranged ai targets crawling people properly

(cherry picked from commit 8f64627c9e35b3c873a7825f25b52319ff8c8e25)

* ranged ai targets crawling people properly

(cherry picked from commit 8f64627c9e35b3c873a7825f25b52319ff8c8e25)

* projectile grenades hit crawling/downed people

(cherry picked from commit 24c3737ae83ab399add28162a65d528d44f73ea9)

* change

* impstation to imp

* remove extra method ops

---------

Co-authored-by: Darkmajia <darkwindleaf@hotmail.co.uk>

Content.Server/Explosion/EntitySystems/ProjectileGrenadeSystem.cs

@@ -1,5 +1,6 @@
 using Content.Server.Explosion.Components;
 using Content.Server.Weapons.Ranged.Systems;
+using Content.Shared.Weapons.Ranged.Components; // Imp
 using Robust.Server.GameObjects;
 using Robust.Shared.Containers;
 using Robust.Shared.Map;
@@ -77,6 +78,7 @@ public sealed class ProjectileGrenadeSystem : EntitySystem
             // slightly uneven, doesn't really change much, but it looks better
             var direction = angle.ToVec().Normalized();
             var velocity = _random.NextVector2(component.MinVelocity, component.MaxVelocity);
+            EnsureComp<TargetedProjectileComponent>(contentUid); // imp - ensure projectile is a TargetedProjectile with no target to hit crawling players
             _gun.ShootProjectile(contentUid, direction, velocity, uid, null);
         }
     }

Content.Server/NPC/Systems/NPCCombatSystem.Ranged.cs

@@ -202,6 +202,7 @@ public sealed partial class NPCCombatSystem
                 return;
             }
 
+            _gun.SetTarget(gun, comp.Target); // Imp
             _gun.AttemptShoot(uid, gunUid, gun, targetCordinates);
         }
     }

Content.Shared/Damage/Systems/RequireProjectileTargetSystem.cs

@@ -26,8 +26,12 @@ public sealed class RequireProjectileTargetSystem : EntitySystem
             return;
 
         var other = args.OtherEntity;
-        if (TryComp(other, out ProjectileComponent? projectile) &&
-            CompOrNull<TargetedProjectileComponent>(other)?.Target != ent)
+
+        if (TryComp(other, out TargetedProjectileComponent? targeted) && // Imp
+            (targeted.Target == null || targeted.Target == ent))
+            return;
+
+        if (TryComp(other, out ProjectileComponent? projectile))
         {
             // Prevents shooting out of while inside of crates
             var shooter = projectile.Shooter;

Content.Shared/Weapons/Ranged/Components/TargetedProjectileComponent.cs

@@ -8,5 +8,5 @@ namespace Content.Shared.Weapons.Ranged.Components;
 public sealed partial class TargetedProjectileComponent : Component
 {
     [DataField, AutoNetworkedField]
-    public EntityUid Target;
+    public EntityUid? Target; // Imp
 }

Content.Shared/Weapons/Ranged/Systems/SharedGunSystem.cs

@@ -207,6 +207,14 @@ public abstract partial class SharedGunSystem : EntitySystem
         EntityManager.DirtyField(uid, gun, nameof(GunComponent.ShotCounter));
     }
 
+    /// <summary>
+    /// Sets the targeted entity of the gun. Should be called before attempting to shoot to avoid shooting over the target.
+    /// </summary>
+    public void SetTarget(GunComponent gun, EntityUid target) // Imp
+    {
+        gun.Target = target;
+    }
+
     /// <summary>
     /// Attempts to shoot at the target coordinates. Resets the shot counter after every shot.
     /// </summary>