Added error message when trying to change an amount of items with a max of 1

Author: Devlrxxh

Plugin/src/main/java/dev/lrxh/neptune/configs/impl/MessagesLocale.java

@@ -274,6 +274,7 @@ public enum MessagesLocale implements IDataAccessor {
     CUSTOM_KIT_HEALTH_SET("CUSTOM_KIT.HEALTH_SET", DataType.STRING_LIST, "&aSet health to <health>."),
     CUSTOM_KIT_CANCELLED("CUSTOM_KIT.CANCELLED", DataType.STRING_LIST, "&cCancelled."),
     CUSTOM_KIT_CANT_ENCHANT("CUSTOM_KIT.CANT_ENCHANT", DataType.STRING_LIST, "&cThis item can't be enchanted."),
+    CUSTOM_KIT_CANT_STACK("CUSTOM_KIT.CANT_STACK", DataType.STRING_LIST, "&cThis item can't be stacked."),
     CUSTOM_KIT_ENCHANT_APPLIED("CUSTOM_KIT.ENCHANT_APPLIED", DataType.STRING_LIST, "&aApplied <enchant> <level>."),
     CUSTOM_KIT_NOT_LOBBY("CUSTOM_KIT.NOT_LOBBY", DataType.STRING_LIST, "&cYou can only use this in the lobby."),
     CUSTOM_KIT_CANT_HOST("CUSTOM_KIT.CANT_HOST", DataType.STRING_LIST, "&cYou can't host a kit right now."),

Plugin/src/main/java/dev/lrxh/neptune/feature/customkit/menu/CustomKitEditorMenu.java

@@ -78,10 +78,15 @@ public void onClick(ClickType type, Player p) {
                 ItemStack item = kit.itemAt(contentsIndex);
                 if (item != null && !item.getType().isAir()) {
                     if (type == ClickType.SHIFT_RIGHT) {
+                        if (item.getMaxStackSize() <= 1) {
+                            MessagesLocale.CUSTOM_KIT_CANT_STACK.send(p.getUniqueId());
+                            return;
+                        }
+                        int max = item.getMaxStackSize();
                         p.closeInventory();
                         SignInputMenu.open(p, "", SignsLocale.CUSTOM_KIT_AMOUNT.getStringList(), input -> {
                             try {
-                                item.setAmount(Math.max(1, Math.min(64, Integer.parseInt(input.trim()))));
+                                item.setAmount(Math.max(1, Math.min(max, Integer.parseInt(input.trim()))));
                                 kit.setItemAt(contentsIndex, item);
                                 save(p);
                             } catch (NumberFormatException ignored) {