FightSystem_Main/src/de/steamwar/fightsystem/FightSystem.java

@@ -57,6 +57,7 @@ public class FightSystem extends JavaPlugin {
         new PlayerStateListener();
         new ProjectileLaunchListener();
         new InFightDamageListener();
+        new InFightInventoryListener();
         new FreezeWorldStateListener();
         new EventJoinListener();
         new CheckListener();

FightSystem_Main/src/de/steamwar/fightsystem/listener/InFightInventoryListener.java

@@ -3,6 +3,7 @@ package de.steamwar.fightsystem.listener;
 import de.steamwar.fightsystem.states.FightState;
 import org.bukkit.Material;
 import org.bukkit.event.EventHandler;
+import org.bukkit.event.block.BlockBreakEvent;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.bukkit.event.inventory.InventoryDragEvent;
 import org.bukkit.event.inventory.InventoryPickupItemEvent;
@@ -62,4 +63,35 @@ public class InFightInventoryListener extends BasicListener {
     public void onDropping(PlayerDropItemEvent e){
         e.setCancelled(true);
     }
+
+    @EventHandler
+    public void onBlockBreak(BlockBreakEvent event) {
+        Inventory inventory = event.getPlayer().getInventory();
+        int inventorySize = inventory.getSize();
+
+        Material type = event.getBlock().getType();
+        ItemStack itemStack;
+
+        for (int i = 0; i < inventorySize; i++) {
+            itemStack = inventory.getItem(i);
+            if (itemStack != null && itemStack.getType().equals(type) && itemStack.getAmount() != itemStack.getMaxStackSize()) {
+                itemStack.setType(type);
+                itemStack.setAmount(itemStack.getAmount() + 1);
+                inventory.setItem(i, itemStack);
+                event.getPlayer().updateInventory();
+                return;
+            }
+        }
+
+        for (int i = 0; i < inventorySize; i++) {
+            itemStack = inventory.getItem(i);
+            if (itemStack == null || itemStack.getType().equals(Material.AIR)) {
+                itemStack = new ItemStack(type, 1);
+                inventory.setItem(i, itemStack);
+                event.getPlayer().updateInventory();
+                return;
+            }
+        }
+    }
+
 }