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# SmartSpawner - Version 1.5.5 ## ✨ New Features ### Version Support - **Added Minecraft 1.21.10 Support** - Full compatibility with latest Minecraft version ### New Spawner Config - **Copper Golem Spawner** - Added support for Copper Golem spawner in 1.21.10 ## 🐛 Bug Fixes ### Spawner Mechanics - **Fixed Cycle Skipping** - Resolved issue where spawners would skip a cycle after stack size updates (stacking or destacking) - **Fixed Hopper Integration** - Hoppers now continue working correctly after spawner stacking operations - **Fixed Low TPS Issues** - Spawners no longer stop spawning loot when server TPS drops - **Spectator Mode Fix** - Spectator players can no longer activate spawners ## 🛡️ Security & Stability ### Critical Fixes - **Fixed Item Duplication Exploit** - Implemented comprehensive item duplication exploit patch with transaction locking and atomic operations for "Drop All" and "Take All" buttons in spawner storage GUI - **Enhanced Exception Handling** - Added exception catching to prevent plugin shutdown when other plugins crash, ensuring SmartSpawner continues to load even if other plugins fail ## 🎨 Configuration Changes ### Placeholder System Update - **New Placeholder Format** - Changed from `%placeholder%` to `{placeholder}` syntax - **Added Percentage Placeholders** - New percentage-based placeholders available in holograms and spawner info buttons > ⚠️ **Important**: You must update your language folder. Backup your current language files and either: > - Delete the language folder to let the plugin regenerate it with new format, or > - Manually update placeholders if using custom language files ### Configuration Migration - **Migrated from `mob_drops.yml` to `spawners_settings.yml`** - Consolidated configuration structure - **Customizable Mob Head Textures** - Users can now edit mob head texture displays directly in spawner GUI settings ## ⚡ Performance Optimizations ### Spawner System - **Optimized Range Checking** - Significantly improved performance of spawner range detection - **Enhanced GUI Updates** - Streamlined spawner GUI view updates with reduced meta calls and improved placeholder handling - **Loot Spawn Optimization** - Enhanced loot spawning efficiency with scheduled spawn time tracking and early loot addition ### User Experience Improvements - **Accurate Countdown Timer** - Spawner delay now counts down correctly from configured time to 00:00 (e.g., 25s → 00:25 to 00:00) - **Smoother GUI Experience** - Pre-spawner loot processing for faster, smoother GUI timer performance - **Prewarm Head Texture Cache** - Reduced GUI latency by preloading mob head textures