Optimization + added Recipe#shouldShow check

src/main/java/fr/themode/demo/Main.java

@@ -6,6 +6,7 @@ import fr.themode.demo.commands.HealthCommand;
 import fr.themode.demo.commands.SimpleCommand;
 import net.minestom.server.MinecraftServer;
 import net.minestom.server.command.CommandManager;
+import net.minestom.server.entity.Player;
 import net.minestom.server.instance.block.BlockManager;
 import net.minestom.server.instance.block.rule.vanilla.RedstonePlacementRule;
 import net.minestom.server.item.ItemStack;
@@ -33,7 +34,12 @@ public class Main {
         commandManager.register(new SimpleCommand());
 
         RecipeManager recipeManager = MinecraftServer.getRecipeManager();
-        ShapelessRecipe shapelessRecipe = new ShapelessRecipe("test", "groupname");
+        ShapelessRecipe shapelessRecipe = new ShapelessRecipe("test", "groupname") {
+            @Override
+            public boolean shouldShow(Player player) {
+                return true;
+            }
+        };
         shapelessRecipe.setResult(new ItemStack(Material.STONE, (byte) 1));
         DeclareRecipesPacket.Ingredient ingredient = new DeclareRecipesPacket.Ingredient();
         ingredient.items = new ItemStack[]{new ItemStack(Material.STONE, (byte) 3)};

src/main/java/net/minestom/server/entity/pathfinding/AStarPathfinder.java

@@ -30,16 +30,12 @@ public class AStarPathfinder {
         int checkCount = 0;
 
         while (!open.isEmpty()) {
-            checkCount++;
-            if (checkCount >= maxCheck)
-                break;
-
             Node current = getCurrentNode(open);
             open.remove(current);
             closed.add(current);
 
             if (isTargetNode(end, current)) {
-                System.out.println("FOUND, RETURN: " + (System.nanoTime() - time));
+                //System.out.println("FOUND, RETURN: " + (System.nanoTime() - time));
                 return buildPath(current);
             }
 
@@ -59,6 +55,10 @@ public class AStarPathfinder {
                 }
             }
 
+            // To do not check the whole world
+            checkCount++;
+            if (checkCount >= maxCheck)
+                break;
         }
 
         return null;

src/main/java/net/minestom/server/network/packet/client/login/LoginStartPacket.java

@@ -113,7 +113,9 @@ public class LoginStartPacket implements ClientPreplayPacket {
 
             List<String> recipesIdentifier = new ArrayList<>();
             for (Recipe recipe : recipeManager.getRecipes()) {
-                // TODO check condition
+                if (!recipe.shouldShow(player))
+                    continue;
+
                 recipesIdentifier.add(recipe.getRecipeId());
             }
             String[] identifiers = recipesIdentifier.toArray(new String[recipesIdentifier.size()]);

src/main/java/net/minestom/server/recipe/Recipe.java

@@ -1,6 +1,8 @@
 package net.minestom.server.recipe;
 
-public class Recipe {
+import net.minestom.server.entity.Player;
+
+public abstract class Recipe {
 
     protected RecipeType recipeType;
     protected String recipeId;
@@ -11,6 +13,8 @@ public class Recipe {
         this.recipeId = recipeId;
     }
 
+    public abstract boolean shouldShow(Player player);
+
     public String getGroup() {
         return group;
     }

src/main/java/net/minestom/server/recipe/ShapedRecipe.java

@@ -6,7 +6,7 @@ import net.minestom.server.network.packet.server.play.DeclareRecipesPacket;
 import java.util.ArrayList;
 import java.util.List;
 
-public class ShapedRecipe extends Recipe {
+public abstract class ShapedRecipe extends Recipe {
 
     private int width, height;
 

src/main/java/net/minestom/server/recipe/ShapelessRecipe.java

@@ -6,7 +6,7 @@ import net.minestom.server.network.packet.server.play.DeclareRecipesPacket;
 import java.util.ArrayList;
 import java.util.List;
 
-public class ShapelessRecipe extends Recipe {
+public abstract class ShapelessRecipe extends Recipe {
 
     private List<DeclareRecipesPacket.Ingredient> ingredients = new ArrayList<>();
 

src/main/java/net/minestom/server/recipe/SmeltingRecipe.java

@@ -3,7 +3,7 @@ package net.minestom.server.recipe;
 import net.minestom.server.item.ItemStack;
 import net.minestom.server.network.packet.server.play.DeclareRecipesPacket;
 
-public class SmeltingRecipe extends Recipe {
+public abstract class SmeltingRecipe extends Recipe {
 
     private DeclareRecipesPacket.Ingredient ingredient;