Moved custom item classes and added ModArmorItem Class

src/main/java/net/krituximon/stalinium/item/ModItems.java

@@ -1,6 +1,7 @@
 package net.krituximon.stalinium.item;
 
 import net.krituximon.stalinium.Stalinium;
+import net.krituximon.stalinium.item.custom.*;
 import net.krituximon.stalinium.sound.ModSounds;
 import net.minecraft.world.item.*;
 import net.neoforged.bus.api.IEventBus;

src/main/java/net/krituximon/stalinium/item/custom/ModArmorItem.java

@@ -0,0 +1,83 @@
+package net.krituximon.stalinium.item.custom;
+
+import com.google.common.collect.ImmutableMap;
+import net.krituximon.stalinium.item.ModArmorMaterials;
+import net.minecraft.core.Holder;
+import net.minecraft.world.effect.MobEffectInstance;
+import net.minecraft.world.effect.MobEffects;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.ArmorItem;
+import net.minecraft.world.item.ArmorMaterial;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.Level;
+
+import java.util.List;
+import java.util.Map;
+
+public class ModArmorItem extends ArmorItem {
+    private static final Map<Holder<ArmorMaterial>, List<MobEffectInstance>> MATERIAL_TO_EFFECT_MAP =
+            (new ImmutableMap.Builder<Holder<ArmorMaterial>, List<MobEffectInstance>>())
+                    .put(ModArmorMaterials.STALINIUM_ARMOR_MATERIAL,
+                            List.of(new MobEffectInstance(MobEffects.JUMP, 200, 1, false, false),
+                            new MobEffectInstance(MobEffects.GLOWING, 200, 1, false, false)))
+                    .build();
+
+    public ModArmorItem(Holder<ArmorMaterial> material, Type type, Properties properties) {
+        super(material, type, properties);
+    }
+
+    @Override
+    public void inventoryTick(ItemStack stack, Level level, Entity entity, int slotId, boolean isSelected) {
+        if(entity instanceof Player player && !level.isClientSide() && hasFullSuitOfArmorOn(player)) {
+            evaluateArmorEffects(player);
+        }
+    }
+
+    private void evaluateArmorEffects(Player player) {
+        for(Map.Entry<Holder<ArmorMaterial>, List<MobEffectInstance>> entry : MATERIAL_TO_EFFECT_MAP.entrySet()) {
+            Holder<ArmorMaterial> mapArmorMaterial = entry.getKey();
+            List<MobEffectInstance> mapEffect = entry.getValue();
+
+            if(hasPlayerCorrectArmorOn(mapArmorMaterial, player)) {
+                addEffectToPlayer(player, mapEffect);
+            }
+        }
+    }
+
+    private void addEffectToPlayer(Player player, List<MobEffectInstance> mapEffect) {
+        boolean hasPlayerEffect = mapEffect.stream().allMatch(effect -> player.hasEffect(effect.getEffect()));
+
+        if(!hasPlayerEffect) {
+            for (MobEffectInstance effect : mapEffect) {
+                player.addEffect(new MobEffectInstance(effect.getEffect(),
+                        effect.getDuration(), effect.getAmplifier(), effect.isAmbient(), effect.isVisible()));
+            }
+        }
+    }
+
+    private boolean hasPlayerCorrectArmorOn(Holder<ArmorMaterial> mapArmorMaterial, Player player) {
+        for(ItemStack armorStack : player.getArmorSlots()) {
+            if(!(armorStack.getItem() instanceof ArmorItem)) {
+                return false;
+            }
+        }
+
+        ArmorItem boots = ((ArmorItem) player.getInventory().getArmor(0).getItem());
+        ArmorItem leggings = ((ArmorItem) player.getInventory().getArmor(1).getItem());
+        ArmorItem chestplate = ((ArmorItem) player.getInventory().getArmor(2).getItem());
+        ArmorItem helmet = ((ArmorItem) player.getInventory().getArmor(3).getItem());
+
+        return boots.getMaterial() == mapArmorMaterial && leggings.getMaterial() == mapArmorMaterial
+                && chestplate.getMaterial() == mapArmorMaterial && helmet.getMaterial() == mapArmorMaterial;
+    }
+
+    private boolean hasFullSuitOfArmorOn(Player player) {
+        ItemStack boots = player.getInventory().getArmor(0);
+        ItemStack leggings = player.getInventory().getArmor(1);
+        ItemStack chestplate = player.getInventory().getArmor(2);
+        ItemStack helmet = player.getInventory().getArmor(3);
+
+        return !boots.isEmpty() && !leggings.isEmpty() && !chestplate.isEmpty() && !helmet.isEmpty();
+    }
+}

src/main/java/net/krituximon/stalinium/item/custom/StaliniumAxeItem.java

@@ -1,4 +1,4 @@
-package net.krituximon.stalinium.item;
+package net.krituximon.stalinium.item.custom;
 
 import net.krituximon.stalinium.util.PlacedLogStorage;
 import net.minecraft.core.BlockPos;

src/main/java/net/krituximon/stalinium/item/custom/StaliniumHoeItem.java

@@ -1,11 +1,10 @@
-package net.krituximon.stalinium.item;
+package net.krituximon.stalinium.item.custom;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.util.RandomSource;
 import net.minecraft.world.InteractionResult;
-import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.HoeItem;
 import net.minecraft.world.item.Item;

src/main/java/net/krituximon/stalinium/item/custom/StaliniumPickaxeItem.java

@@ -1,4 +1,4 @@
-package net.krituximon.stalinium.item;
+package net.krituximon.stalinium.item.custom;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;

src/main/java/net/krituximon/stalinium/item/custom/StaliniumShovelItem.java

@@ -1,4 +1,4 @@
-package net.krituximon.stalinium.item;
+package net.krituximon.stalinium.item.custom;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.server.level.ServerPlayer;

src/main/java/net/krituximon/stalinium/item/custom/StaliniumSwordItem.java

@@ -1,4 +1,4 @@
-package net.krituximon.stalinium.item;
+package net.krituximon.stalinium.item.custom;
 
 import net.krituximon.stalinium.Stalinium;
 import net.minecraft.core.Holder;