Fix arrow texture in emi recipes

src/main/java/com/minelittlepony/unicopia/compat/emi/Main.java

@@ -19,6 +19,7 @@ import com.minelittlepony.unicopia.item.group.MultiItem;
 import dev.emi.emi.api.EmiPlugin;
 import dev.emi.emi.api.EmiRegistry;
 import dev.emi.emi.api.recipe.EmiRecipeCategory;
+import dev.emi.emi.api.render.EmiTexture;
 import dev.emi.emi.api.stack.Comparison;
 import dev.emi.emi.api.stack.EmiStack;
 import net.minecraft.item.ItemStack;
@@ -30,6 +31,9 @@ public class Main implements EmiPlugin {
     static final EmiRecipeCategory SPELL_BOOK_CATEGORY = new EmiRecipeCategory(Unicopia.id("spellbook"), SPELL_BOOK_STATION, SPELL_BOOK_STATION);
     static final Comparison COMPARING_BOTH = Comparison.builder().nbt(true).build();
 
+    static final Identifier WIDGETS = Unicopia.id("textures/gui/widgets.png");
+    static final EmiTexture EMPTY_ARROW = new EmiTexture(WIDGETS, 44, 0, 24, 17);
+
     @Override
     public void register(EmiRegistry registry) {
         registry.addCategory(SPELL_BOOK_CATEGORY);

src/main/java/com/minelittlepony/unicopia/compat/emi/SpellbookEmiRecipe.java

@@ -69,7 +69,7 @@ class SpellbookEmiRecipe implements EmiRecipe, SpellbookRecipe.CraftingTreeBuild
     @Override
     public void addWidgets(WidgetHolder widgets) {
         widgets.addTexture(SpellbookScreen.TEXTURE, 0, 0, getDisplayWidth(), getDisplayHeight(), 50, 50, 128, 128, 512, 256);
-        widgets.addTexture(EmiTexture.EMPTY_ARROW, 160, 65);
+        widgets.addTexture(Main.EMPTY_ARROW, 160, 65);
 
         List<HexagonalCraftingGrid.Slot> grid = new ArrayList<>();
         List<HexagonalCraftingGrid.Slot> gem = new ArrayList<>();