1 files changed, 116 insertions, 0 deletions
diff --git a/src/main/java/me/shedaniel/rei/plugin/autocrafting/AutoCraftingHandler.java b/src/main/java/me/shedaniel/rei/plugin/autocrafting/AutoCraftingHandler.java
new file mode 100644
index 000000000..f99a8734b
--- /dev/null
+++ b/src/main/java/me/shedaniel/rei/plugin/autocrafting/AutoCraftingHandler.java
@@ -0,0 +1,116 @@
+/*
+ * Roughly Enough Items by Danielshe.
+ * Licensed under the MIT License.
+ */
+
+package me.shedaniel.rei.plugin.autocrafting;
+
+import com.google.common.collect.Lists;
+import io.netty.buffer.Unpooled;
+import me.shedaniel.rei.RoughlyEnoughItemsNetwork;
+import me.shedaniel.rei.api.AutoTransferHandler;
+import me.shedaniel.rei.listeners.RecipeBookGuiHooks;
+import me.shedaniel.rei.plugin.crafting.DefaultCraftingCategory;
+import me.shedaniel.rei.plugin.crafting.DefaultCraftingDisplay;
+import me.shedaniel.rei.plugin.crafting.DefaultShapedDisplay;
+import net.fabricmc.fabric.api.network.ClientSidePacketRegistry;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.screen.ingame.CraftingTableScreen;
+import net.minecraft.client.gui.screen.ingame.InventoryScreen;
+import net.minecraft.client.gui.screen.recipebook.RecipeBookProvider;
+import net.minecraft.container.CraftingContainer;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.DefaultedList;
+import net.minecraft.util.PacketByteBuf;
+
+import java.util.List;
+
+public class AutoCraftingHandler implements AutoTransferHandler {
+    @Override
+    public Result handle(Context context) {
+        if (!(context.getRecipe() instanceof DefaultCraftingDisplay))
+            return Result.createNotApplicable();
+        if (!(context.getContainerScreen() instanceof CraftingTableScreen) && !(context.getContainerScreen() instanceof InventoryScreen))
+            return Result.createNotApplicable();
+        if (context.getContainerScreen() instanceof InventoryScreen && (((DefaultCraftingDisplay) context.getRecipe()).getWidth() > 2 || ((DefaultCraftingDisplay) context.getRecipe()).getHeight() > 2))
+            return Result.createFailed("error.rei.transfer.too_small");
+        if (!canUseMovePackets())
+            return Result.createFailed("error.rei.not.on.server");
+        if (!hasItems(context.getRecipe().getInput()))
+            return Result.createFailed("error.rei.not.enough.materials");
+        if (!context.isActuallyCrafting())
+            return Result.createSuccessful();
+        
+        context.getMinecraft().openScreen(context.getContainerScreen());
+        ((RecipeBookGuiHooks) ((RecipeBookProvider) context.getContainerScreen()).getRecipeBookGui()).rei_getGhostSlots().reset();
+        DefaultCraftingDisplay display = (DefaultCraftingDisplay) context.getRecipe();
+        PacketByteBuf buf = new PacketByteBuf(Unpooled.buffer());
+        buf.writeUuid(RoughlyEnoughItemsNetwork.CRAFTING_TABLE_MOVE);
+        buf.writeBoolean(Screen.hasShiftDown());
+        CraftingContainer craftingContainer = (CraftingContainer) context.getContainer();
+        
+        List<List<ItemStack>> ogInput = display.getInput();
+        List<List<ItemStack>> input = Lists.newArrayListWithCapacity(craftingContainer.getCraftingWidth() * craftingContainer.getCraftingHeight());
+        for (int i = 0; i < craftingContainer.getCraftingWidth() * craftingContainer.getCraftingHeight(); i++) {
+            input.add(Lists.newArrayList());
+        }
+        for (int i = 0; i < ogInput.size(); i++) {
+            List<ItemStack> ogStacks = ogInput.get(i);
+            if (display instanceof DefaultShapedDisplay) {
+                if (!ogInput.get(i).isEmpty())
+                    input.set(DefaultCraftingCategory.getSlotWithSize(display, i), ogInput.get(i));
+            } else if (!ogInput.get(i).isEmpty())
+                input.set(i, ogInput.get(i));
+        }
+        
+        buf.writeInt(input.size());
+        for (List<ItemStack> stacks : input) {
+            buf.writeInt(stacks.size());
+            for (ItemStack stack : stacks) {
+                buf.writeItemStack(stack);
+            }
+        }
+        ClientSidePacketRegistry.INSTANCE.sendToServer(RoughlyEnoughItemsNetwork.MOVE_ITEMS_PACKET, buf);
+        return Result.createSuccessful();
+    }
+    
+    @Override
+    public double getPriority() {
+        return -10;
+    }
+    
+    public boolean canUseMovePackets() {
+        return ClientSidePacketRegistry.INSTANCE.canServerReceive(RoughlyEnoughItemsNetwork.MOVE_ITEMS_PACKET);
+    }
+    
+    public boolean hasItems(List<List<ItemStack>> inputs) {
+        // Create a clone of player's inventory, and count
+        DefaultedList<ItemStack> copyMain = DefaultedList.create();
+        for (ItemStack stack : MinecraftClient.getInstance().player.inventory.main) {
+            copyMain.add(stack.copy());
+        }
+        for (List<ItemStack> possibleStacks : inputs) {
+            boolean done = possibleStacks.isEmpty();
+            for (ItemStack possibleStack : possibleStacks) {
+                if (!done) {
+                    int invRequiredCount = possibleStack.getCount();
+                    for (ItemStack stack : copyMain) {
+                        if (ItemStack.areItemsEqualIgnoreDamage(possibleStack, stack)) {
+                            while (invRequiredCount > 0 && !stack.isEmpty()) {
+                                invRequiredCount--;
+                                stack.decrement(1);
+                            }
+                        }
+                    }
+                    if (invRequiredCount <= 0) {
+                        done = true;
+                    }
+                }
+            }
+            if (!done)
+                return false;
+        }
+        return true;
+    }
+}