Keep energy in items when crafting

src/main/java/techreborn/TechReborn.java

@@ -43,6 +43,7 @@ import techreborn.events.ModRegistry;
 import techreborn.init.*;
 import techreborn.packets.ClientboundPackets;
 import techreborn.packets.ServerboundPackets;
+import techreborn.utils.PoweredCraftingHandler;
 import techreborn.world.WorldGenerator;
 
 public class TechReborn implements ModInitializer {
@@ -77,6 +78,7 @@ public class TechReborn implements ModInitializer {
 		//Force loads the block entities at the right time
 		TRBlockEntities.THERMAL_GEN.toString();
 		TRDispenserBehavior.init();
+		PoweredCraftingHandler.setup();
 
 		Torus.genSizeMap(TechRebornConfig.fusionControlComputerMaxCoilSize);
 

src/main/java/techreborn/utils/PoweredCraftingHandler.java

@@ -0,0 +1,57 @@
+/*
+ * This file is part of TechReborn, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) 2020 TechReborn
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package techreborn.utils;
+
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.inventory.CraftingInventory;
+import net.minecraft.item.ItemStack;
+import reborncore.api.events.ItemCraftCallback;
+import team.reborn.energy.Energy;
+
+import java.util.stream.IntStream;
+
+public final class PoweredCraftingHandler implements ItemCraftCallback {
+
+	private PoweredCraftingHandler() {
+	}
+
+	public static void setup() {
+		ItemCraftCallback.EVENT.register(new PoweredCraftingHandler());
+	}
+
+	@Override
+	public void onCraft(ItemStack stack, CraftingInventory craftingInventory, PlayerEntity playerEntity) {
+		if (Energy.valid(stack)) {
+			double totalEnergy = IntStream.range(0, craftingInventory.getInvSize())
+					.mapToObj(craftingInventory::getInvStack)
+					.filter(s -> !s.isEmpty())
+					.filter(Energy::valid)
+					.mapToDouble(s -> Energy.of(s).getEnergy())
+					.sum();
+
+			Energy.of(stack).set(totalEnergy);
+		}
+	}
+}