Make energy placeholder work with substations (#3964)

Author: TarLaboratories

src/main/java/com/gregtechceu/gtceu/common/data/GTPlaceholders.java

@@ -3,11 +3,13 @@
 import com.gregtechceu.gtceu.api.GTValues;
 import com.gregtechceu.gtceu.api.capability.GTCapabilityHelper;
 import com.gregtechceu.gtceu.api.capability.IEnergyContainer;
+import com.gregtechceu.gtceu.api.capability.IEnergyInfoProvider;
 import com.gregtechceu.gtceu.api.capability.IWorkable;
 import com.gregtechceu.gtceu.api.cover.filter.ItemFilter;
 import com.gregtechceu.gtceu.api.item.ComponentItem;
 import com.gregtechceu.gtceu.api.item.component.IDataItem;
 import com.gregtechceu.gtceu.api.item.component.IItemComponent;
+import com.gregtechceu.gtceu.api.machine.IMachineBlockEntity;
 import com.gregtechceu.gtceu.api.machine.MetaMachine;
 import com.gregtechceu.gtceu.api.machine.feature.multiblock.IMaintenanceMachine;
 import com.gregtechceu.gtceu.api.misc.virtualregistry.EntryTypes;
@@ -88,6 +90,11 @@ public static void initPlaceholders() {
             public MultiLineComponent apply(PlaceholderContext ctx,
                                             List<MultiLineComponent> args) throws PlaceholderException {
                 PlaceholderUtils.checkArgs(args, 0);
+                if (ctx.level().getBlockEntity(ctx.pos()) instanceof IMachineBlockEntity machineBE) {
+                    if (machineBE.getMetaMachine() instanceof IEnergyInfoProvider energyInfoProvider) {
+                        return MultiLineComponent.literal(energyInfoProvider.getEnergyInfo().stored().longValue());
+                    }
+                }
                 IEnergyContainer energy = GTCapabilityHelper.getEnergyContainer(ctx.level(), ctx.pos(), ctx.side());
                 return MultiLineComponent.literal(energy != null ? energy.getEnergyStored() : 0);
             }
@@ -98,6 +105,11 @@ public MultiLineComponent apply(PlaceholderContext ctx,
             public MultiLineComponent apply(PlaceholderContext ctx,
                                             List<MultiLineComponent> args) throws PlaceholderException {
                 PlaceholderUtils.checkArgs(args, 0);
+                if (ctx.level().getBlockEntity(ctx.pos()) instanceof IMachineBlockEntity machineBE) {
+                    if (machineBE.getMetaMachine() instanceof IEnergyInfoProvider energyInfoProvider) {
+                        return MultiLineComponent.literal(energyInfoProvider.getEnergyInfo().capacity().longValue());
+                    }
+                }
                 IEnergyContainer energy = GTCapabilityHelper.getEnergyContainer(ctx.level(), ctx.pos(), ctx.side());
                 return MultiLineComponent.literal(energy != null ? energy.getEnergyCapacity() : 0);
             }