improve fluid to drop performance

Author: GlodBlock

src/main/java/com/glodblock/github/common/item/fake/DropLookup.java

@@ -0,0 +1,23 @@
+package com.glodblock.github.common.item.fake;
+
+import appeng.api.storage.data.IAEItemStack;
+import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
+import net.minecraftforge.fluids.FluidStack;
+
+import java.util.Map;
+import java.util.function.Function;
+
+public final class DropLookup {
+
+    private final static Map<FluidStack, IAEItemStack> FLUID_CACHE_A = new Object2ObjectLinkedOpenHashMap<>();
+
+    public static IAEItemStack lookup(FluidStack fluid, Function<FluidStack, IAEItemStack> fallback) {
+        IAEItemStack cache = FLUID_CACHE_A.get(fluid);
+        if (cache == null) {
+            cache = fallback.apply(fluid);
+            FLUID_CACHE_A.put(fluid, cache);
+        }
+        return cache == null ? null : cache.copy();
+    }
+
+}

src/main/java/com/glodblock/github/common/item/fake/FakeFluids.java

@@ -51,7 +51,15 @@ public FluidStack getStack(@Nullable IAEItemStack stack) {
 
                     @Override
                     public IAEFluidStack getAEStack(ItemStack stack) {
-                        return getAEStack(AEItemStack.fromItemStack(stack));
+                        if (stack.isEmpty()) {
+                            return null;
+                        }
+                        IAEFluidStack fluidStack = AEFluidStack.fromFluidStack(getStack(stack));
+                        if (fluidStack == null) {
+                            return null;
+                        }
+                        fluidStack.setStackSize(stack.getCount());
+                        return fluidStack;
                     }
 
                     @Override
@@ -92,7 +100,7 @@ public IAEItemStack packAEStack(FluidStack fluid) {
                         if (fluid == null || fluid.amount <= 0) {
                             return null;
                         }
-                        IAEItemStack stack = AEItemStack.fromItemStack(packStack(fluid));
+                        IAEItemStack stack = DropLookup.lookup(fluid, f -> AEItemStack.fromItemStack(packStack(f)));
                         if (stack == null) {
                             return null;
                         }
@@ -105,7 +113,7 @@ public IAEItemStack packAEStackLong(IAEFluidStack fluid) {
                         if (fluid == null || fluid.getStackSize() <= 0) {
                             return null;
                         }
-                        IAEItemStack stack = AEItemStack.fromItemStack(packStack(fluid.getFluidStack()));
+                        IAEItemStack stack = DropLookup.lookup(fluid.getFluidStack(), f -> AEItemStack.fromItemStack(packStack(f)));
                         if (stack == null) {
                             return null;
                         }