uniform disc dropper respawns

src/engine/server/world/WorldServer.java

@@ -203,6 +203,7 @@ public class WorldServer {
 		LocalDateTime nextFlashTrashCheckTime = LocalDateTime.now();
 		LocalDateTime nextHourlyJobTime = LocalDateTime.now().withMinute(0).withSecond(0).plusHours(1);
 		LocalDateTime nextWareHousePushTime = LocalDateTime.now();
+		LocalDateTime nextDiscSpawn = LocalDateTime.now().withMinute(0).withSecond(0).plusHours(1);
 
 		// Begin execution of main game loop
 
@@ -245,6 +246,14 @@ public class WorldServer {
 				nextWareHousePushTime = LocalDateTime.now().plusMinutes(15);
 			}
 
+			if (LocalDateTime.now().isAfter(nextDiscSpawn)) {
+				for(Mob dropper : Mob.disciplineDroppers){
+					if(dropper.isAlive() == false){
+						dropper.respawn();
+					}
+				}
+				nextDiscSpawn = LocalDateTime.now().plusHours(3).withMinute(0).withSecond(0);
+			}
 			ThreadUtils.sleep(50);
 		}
 	}