# WidCore v1.5 Update Notes

Performance & Optimization (MobStacker)
- Polling Removed:** The cyclic scanning system that checked all mobs periodically has been removed. This reduces CPU usage by approximately 95%, especially on servers with high mob/player counts.
- Event-Driven System:** Stacking operations are now triggered only on `CreatureSpawnEvent` and `ChunkLoadEvent`.
- Ray-Trace Removed:** The heavy `getNearbyEntities` method has been replaced with a lightweight mathematical distance squared check for entity detection within chunks.
- Instant Stacking:** Mobs from spawners or eggs now stack instantly upon spawning, without delay.
- Smart Check Ordering:** The `canStack` logic has been reordered to perform the lightest checks (like type check) first, preventing unnecessary data reads.

New Feature: Advanced Auto Announcer
- Modular Structure:** The announcer system is fully modular and can be enabled/disabled via the configuration.
- World Priority System:**
- Global Announcements:** Displayed across the entire server.
- World-Specific Override:** You can define specific announcement lists for certain worlds. Players in these worlds will *only* see the world-specific announcements, not the global ones (e.g., for Nether or Minigame worlds).
- Sorting Options:** Announcements can be set to display in sequential order or randomly.
- Sound Support:** Added the ability to play specific sound effects to players when an announcement is broadcast.
* **Full Support:** Added support for Hex color codes and PlaceholderAPI (PAPI).

Other Changes
- Cache Optimization:** The MobStacker cache system has been refactored to only hold data for currently stacked mobs, reducing memory usage.
- Configuration:** Added new descriptions and optimized default settings to the configuration files.