1 files changed, 41 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/recipe/maps/OilCrackerBackend.java b/src/main/java/gregtech/api/recipe/maps/OilCrackerBackend.java
new file mode 100644
index 0000000000..c2c312a48a
--- /dev/null
+++ b/src/main/java/gregtech/api/recipe/maps/OilCrackerBackend.java
@@ -0,0 +1,41 @@
+package gregtech.api.recipe.maps;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.annotation.ParametersAreNonnullByDefault;
+
+import net.minecraftforge.fluids.FluidStack;
+
+import gregtech.api.recipe.RecipeMapBackend;
+import gregtech.api.recipe.RecipeMapBackendPropertiesBuilder;
+import gregtech.api.util.GT_Recipe;
+import gregtech.api.util.MethodsReturnNonnullByDefault;
+
+@ParametersAreNonnullByDefault
+@MethodsReturnNonnullByDefault
+public class OilCrackerBackend extends RecipeMapBackend {
+
+    private final Set<String> validCatalystFluidNames = new HashSet<>();
+
+    public OilCrackerBackend(RecipeMapBackendPropertiesBuilder propertiesBuilder) {
+        super(propertiesBuilder);
+    }
+
+    @Override
+    public GT_Recipe compileRecipe(GT_Recipe recipe) {
+        super.compileRecipe(recipe);
+        if (recipe.mFluidInputs != null && recipe.mFluidInputs.length > 1 && recipe.mFluidInputs[1] != null) {
+            validCatalystFluidNames.add(
+                recipe.mFluidInputs[1].getFluid()
+                    .getName());
+        }
+        return recipe;
+    }
+
+    public boolean isValidCatalystFluid(FluidStack fluid) {
+        return validCatalystFluidNames.contains(
+            fluid.getFluid()
+                .getName());
+    }
+}