Fix Welder component interaction (#4634)

Content.Server/Tools/Components/WelderComponent.cs

@@ -308,7 +308,7 @@ namespace Content.Server.Tools.Components
                     .TryGetDrainableSolution(eventArgs.Target.Uid, out var targetSolution)
                 && WelderSolution != null)
             {
-                if (WelderLit)
+                if (WelderLit && targetSolution.DrainAvailable > 0)
                 {
                     // Oh no no
                     eventArgs.Target.SpawnExplosion();
@@ -324,6 +324,11 @@ namespace Content.Server.Tools.Components
                     eventArgs.Target.PopupMessage(eventArgs.User,
                         Loc.GetString("welder-component-after-interact-refueled-message"));
                 }
+                else
+                {
+                    eventArgs.Target.PopupMessage(eventArgs.User,
+                        Loc.GetString("welder-component-no-fuel-in-tank", ("owner", eventArgs.Target)));
+                }
             }
 
             return true;

Resources/Locale/en-US/tools/components/welder-component.ftl

@@ -1,6 +1,7 @@
 welder-component-welder-not-lit-message = The welder is turned off!
 welder-component-cannot-weld-message = The welder does not have enough fuel for that!
 welder-component-no-fuel-message = The welder has no fuel left!
+welder-component-no-fuel-in-tank = {$owner} is empty
 welder-component-on-examine-welder-lit-message = [color=orange]Lit[/color]
 welder-component-on-examine-welder-not-lit-message = Not lit
 welder-component-on-examine-detailed-message = Fuel: [color={$colorName}]{$fuelLeft}/{$fuelCapacity}[/color].

Resources/Prototypes/Entities/Structures/Storage/Tanks/tanks.yml

@@ -17,6 +17,7 @@
   id: WeldingFuelTankFull
   parent: WeldingFuelTank
   name: fuel tank
+  suffix: Full
   description: A storage tank containing welding fuel.
   components:
   - type: Explosive