Eject casings some distance from the gun (#18081)

Makes bullet casings launch a bit away from you when shooting a gun. Cycling still drops it at your feet.

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Co-authored-by: Kevin Zheng <kevinz5000@gmail.com>

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

@@ -377,6 +377,7 @@ public abstract partial class SharedGunSystem : EntitySystem
     /// </summary>
     protected void EjectCartridge(
         EntityUid entity,
+        Angle? angle = null,
         bool playSound = true)
     {
         // TODO: Sound limit version.
@@ -389,6 +390,13 @@ public abstract partial class SharedGunSystem : EntitySystem
         TransformSystem.SetLocalRotation(xform, Random.NextAngle());
         TransformSystem.SetCoordinates(entity, xform, coordinates);
 
+        // decides direction the casing ejects and only when not cycling
+        if (angle != null)
+        {
+            Angle ejectAngle = angle.Value;
+            ejectAngle += 3.7f; // 212 degrees; casings should eject slightly to the right and behind of a gun
+            ThrowingSystem.TryThrow(entity, ejectAngle.ToVec().Normalized() / 100, 5f);
+        }
         if (playSound && TryComp<CartridgeAmmoComponent>(entity, out var cartridge))
         {
             Audio.PlayPvs(cartridge.EjectSound, entity, AudioParams.Default.WithVariation(0.05f).WithVolume(-1f));