Resolve issues with ProRecipes.

- Ignore null recipe results.
- Ignore recipes with all null results.
- Ignore air ingredients.

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>co.kepler.fastcraftplus</groupId>
     <artifactId>fastcraftplus</artifactId>
-    <version>0.26.1</version>
+    <version>0.26.2</version>
 
     <build>
         <plugins>

src/main/java/co/kepler/fastcraftplus/compat/Compat_ProRecipes.java

@@ -4,6 +4,7 @@
 import co.kepler.fastcraftplus.recipes.Ingredient;
 import mc.mcgrizzz.prorecipes.ProRecipes;
 import mc.mcgrizzz.prorecipes.RecipeAPI;
+import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.Recipe;
@@ -56,6 +57,7 @@ public Set<FastRecipe> getRecipes(Player player) {
             for (int id = 0; id < count; id++) {
                 // Get the recipe of this type and id
                 RecipeAPI.RecipeContainer recipe = api.getRecipe(type, id);
+                if (allNullOrAir(recipe.getResult())) continue;
                 if (player == null || !recipe.hasPermission() || player.hasPermission(recipe.getPermission())) {
                     // If player has permission to craft
                     FastRecipe fastRecipe = getRecipe(recipe);
@@ -66,6 +68,13 @@ public Set<FastRecipe> getRecipes(Player player) {
         return recipes;
     }
 
+    public boolean allNullOrAir(ItemStack... items) {
+        for (ItemStack is : items)
+            if (is != null && is.getType() != Material.AIR)
+                return false;
+        return true;
+    }
+
     public FastRecipe getRecipe(RecipeAPI.RecipeContainer recipe) {
         int hash = hash(recipe);
         if (!loadRecipe(recipe, hash)) return null;
@@ -92,10 +101,15 @@ public int hash(RecipeAPI.RecipeContainer recipe) {
     }
 
     public static class FastRecipeCompat extends FastRecipe {
-        private final List<ItemStack> results = new ArrayList<>();
+        private final List<ItemStack> results;
 
         public FastRecipeCompat(RecipeAPI.RecipeContainer recipe) {
-            Collections.addAll(results, recipe.getResult());
+            results = new ArrayList<>(4);
+            for (ItemStack result : recipe.getResult()) {
+                if (result != null && result.getType() != Material.ACACIA_DOOR)
+                    results.add(result);
+            }
+
             for (ItemStack is : recipe.getIngredients()) {
                 if (is == null) continue;
                 addIngredient(new Ingredient(is));

src/main/java/co/kepler/fastcraftplus/recipes/FastRecipe.java

@@ -21,7 +21,7 @@ public abstract class FastRecipe implements Comparable<FastRecipe> {
      * @param ingredient The ingredient to add.
      */
     protected void addIngredient(Ingredient ingredient) {
-        if (ingredient == null) return;
+        if (ingredient == null || ingredient.getType() == Material.AIR) return;
         Ingredient key = ingredient.clone(0);
         Integer amount = ingredients.get(key);
         amount = (amount == null ? 0 : amount) + ingredient.getAmount();