Fix GT 4A Hatches Max Input Voltage Not Being Correct

src/main/java/com/nomiceu/nomilabs/gregtech/mixinhelper/AccessibleEnergyContainerList.java

@@ -0,0 +1,8 @@
+package com.nomiceu.nomilabs.gregtech.mixinhelper;
+
+public interface AccessibleEnergyContainerList {
+    /**
+     * The total amperage of all the containers with the highest input voltage.
+     */
+    long getTotalHighestInputAmperage();
+}

src/main/java/com/nomiceu/nomilabs/mixin/gregtech/EnergyContainerListMixin.java

@@ -0,0 +1,41 @@
+package com.nomiceu.nomilabs.mixin.gregtech;
+
+import com.nomiceu.nomilabs.gregtech.mixinhelper.AccessibleEnergyContainerList;
+import gregtech.api.capability.IEnergyContainer;
+import gregtech.api.capability.impl.EnergyContainerList;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.List;
+
+@Mixin(value = EnergyContainerList.class, remap = false)
+public class EnergyContainerListMixin implements AccessibleEnergyContainerList {
+    @Shadow
+    @Final
+    private long highestInputVoltage;
+
+    /**
+     * The total amperage of all the containers with the highest input voltage.
+     */
+    @Unique
+    private long totalHighestInputAmperage = 0;
+
+    @Inject(method = "<init>", at = @At("TAIL"))
+    public void initTotalHighestInputAmp(List<IEnergyContainer> energyContainerList, CallbackInfo ci) {
+        for (IEnergyContainer container : energyContainerList) {
+            if (container.getInputVoltage() == highestInputVoltage) {
+                totalHighestInputAmperage += container.getInputAmperage();
+            }
+        }
+    }
+
+    @Override
+    public long getTotalHighestInputAmperage() {
+        return totalHighestInputAmperage;
+    }
+}

src/main/java/com/nomiceu/nomilabs/mixin/gregtech/MultiblockRecipeLogicMixin.java

@@ -0,0 +1,52 @@
+package com.nomiceu.nomilabs.mixin.gregtech;
+
+import com.nomiceu.nomilabs.gregtech.mixinhelper.AccessibleEnergyContainerList;
+import gregtech.api.GTValues;
+import gregtech.api.capability.IEnergyContainer;
+import gregtech.api.capability.impl.AbstractRecipeLogic;
+import gregtech.api.capability.impl.EnergyContainerList;
+import gregtech.api.capability.impl.MultiblockRecipeLogic;
+import gregtech.api.metatileentity.MetaTileEntity;
+import gregtech.api.recipes.RecipeMap;
+import gregtech.api.util.GTUtility;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(value = MultiblockRecipeLogic.class, remap = false)
+public abstract class MultiblockRecipeLogicMixin extends AbstractRecipeLogic {
+    @Shadow public abstract IEnergyContainer getEnergyContainer();
+
+    /**
+     * Default Ignored Constructor
+     */
+    public MultiblockRecipeLogicMixin(MetaTileEntity tileEntity, RecipeMap<?> recipeMap) {
+        super(tileEntity, recipeMap);
+    }
+
+    @Inject(method = "getMaxVoltage", at = @At("HEAD"), cancellable = true)
+    public void getCorrectMaxVoltage(CallbackInfoReturnable<Long> cir) {
+        if (!consumesEnergy()) return;
+
+        IEnergyContainer energyContainer = getEnergyContainer();
+        if (energyContainer instanceof EnergyContainerList energyList) {
+            long highestVoltage = energyList.getHighestInputVoltage();
+            if (energyList.getNumHighestInputContainers() > 1) {
+                // allow tier + 1 if there are multiple hatches present at the highest tier
+                int tier = GTUtility.getTierByVoltage(highestVoltage);
+                cir.setReturnValue(GTValues.V[Math.min(tier + 1, GTValues.MAX)]);
+            } else {
+                var amp = ((AccessibleEnergyContainerList) energyList).getTotalHighestInputAmperage();
+                if (amp >= 4) highestVoltage = highestVoltage * 4;
+                cir.setReturnValue(highestVoltage);
+            }
+        } else {
+            var amp = energyContainer.getInputAmperage();
+            var voltage = energyContainer.getInputVoltage();
+            if (amp >= 4) voltage = voltage * 4;
+            cir.setReturnValue(voltage);
+        }
+    }
+}

src/main/resources/mixins.nomilabs.gregtech.json

@@ -7,12 +7,14 @@
   "mixins": [
     "AccessibleDecompositionRecipeHandler",
     "AccessibleMaterialInfo",
+    "EnergyContainerListMixin",
     "FluidStorageKeyMixin",
     "GTRecipeWrapperMixin",
     "MaterialFlagsMixin",
     "MaterialMixin",
     "MaterialStackMixin",
     "MetaItemsMixin",
+    "MultiblockRecipeLogicMixin",
     "RecipeBuilderMixin",
     "RecipeMapMixin",
     "VirtualizedRecipeMapMixin"