Shutdown AME when the fuel is empty (#20458)

Content.Server/Ame/EntitySystems/AmeControllerSystem.cs

@@ -67,18 +67,29 @@ public sealed class AmeControllerSystem : EntitySystem
             return;
 
         if (TryComp<AmeFuelContainerComponent>(controller.JarSlot.ContainedEntity, out var fuelJar))
+        {
+            // if the jar is empty shut down the AME
+            if (fuelJar.FuelAmount <= 0)
+            {
+                SetInjecting(uid, false, null, controller);
+            }
+            else
             {
                 var availableInject = Math.Min(controller.InjectionAmount, fuelJar.FuelAmount);
                 var powerOutput = group.InjectFuel(availableInject, out var overloading);
                 if (TryComp<PowerSupplierComponent>(uid, out var powerOutlet))
                     powerOutlet.MaxSupply = powerOutput;
                 fuelJar.FuelAmount -= availableInject;
+                // only play audio if we actually had an injection
+                if (availableInject > 0)
                     _audioSystem.PlayPvs(controller.InjectSound, uid, AudioParams.Default.WithVolume(overloading ? 10f : 0f));
                 UpdateUi(uid, controller);
             }
+        }
 
         controller.Stability = group.GetTotalStability();
 
+        group.UpdateCoreVisuals();
         UpdateDisplay(uid, controller.Stability, controller);
 
         if (controller.Stability <= 0)
@@ -155,7 +166,7 @@ public sealed class AmeControllerSystem : EntitySystem
             return;
 
         controller.Injecting = value;
-        _appearanceSystem.SetData(uid, AmeControllerVisuals.DisplayState, value ? AmeControllerState.On : AmeControllerState.Off);
+        UpdateDisplay(uid, controller.Stability, controller);
         if (!value && TryComp<PowerSupplierComponent>(uid, out var powerOut))
             powerOut.MaxSupply = 0;
 
@@ -215,15 +226,20 @@ public sealed class AmeControllerSystem : EntitySystem
         if (!Resolve(uid, ref controller, ref appearance))
             return;
 
-        _appearanceSystem.SetData(
+        var ameControllerState = stability switch
-            uid,
-            AmeControllerVisuals.DisplayState,
-            stability switch
         {
             < 10 => AmeControllerState.Fuck,
             < 50 => AmeControllerState.Critical,
             _ => AmeControllerState.On,
-            },
+        };
+
+        if (!controller.Injecting)
+            ameControllerState = AmeControllerState.Off;
+
+        _appearanceSystem.SetData(
+            uid,
+            AmeControllerVisuals.DisplayState,
+            ameControllerState,
             appearance
         );
     }