Fixed particle rendering crash on MC 1.21+ The ChestEffectsTask was calling world.spawnParticle() with offset/extra parameters that MC 1.21+ no longer accepts for certain particle types without explicit ParticleData. This caused the beacon beam effect to throw IllegalArgumentException: missing required data class java.lang.Float every tick.

What changed: Simplified END_ROD particle spawning to use single-parameter method

Removed problematic offset/extra float parameters that require ParticleData in 1.21+ Beacon beam effect now renders correctly without console spam Technical details:

// Before (broken in 1.21+): world.spawnParticle(Particle.END_ROD, x, y, z, 1, 0.1, 0.0, 0.1, 0.0f);

// After (works everywhere): world.spawnParticle(Particle.END_ROD, x, y, z, 1);

Affected versions: MC 1.21 - 1.21.4 Recommended for all Paper/Purpur 1.21+ users experiencing console warnings

SpawnChestPlugin 4.4
What's new
Multi-chest spawning
Spawn multiple chests per interval simultaneously. Each chest finds its own random location with a configurable delay between spawns to keep the server load even.

settings:
chest-count-per-interval: 3 # spawn 3 chests at once
chest-spawn-delay-seconds: 5 # 5 seconds between each

Four summoner apples
The old generic Summoner Apple is now four distinct items — each forces a specific chest tier or picks one at random. All four can be given via command, configured to drop inside chests independently, and obtained through /getlegendaryitems.

Command Result
/giveapple random <player> Spawns a random-tier chest
/giveapple common <player> Always spawns a Common chest
/giveapple rare <player> Always spawns a Rare chest
/giveapple legendary <player> Always spawns a Legendary chest
World apple drop
When enabled, a Summoner Apple spawns as a physical item in the world each time a chest appears. Players see the coordinates in chat and race to pick it up. The item never despawns until collected.

world-apple-drop:
enabled: false
spawn-method: near-chest # near-chest | near-player | with-chest
radius: 15

Pre-open timer
Chests start locked. The first player to right-click starts a countdown visible to everyone nearby. Only after the countdown ends can anyone open the chest — giving distant players a chance to run. The chest-disappear timer begins only after the chest unlocks.

pre-open-timer:
enabled: true
duration-seconds: 30
notify-radius: 20.0 # countdown messages visible within this range

Chest protection zone
Blocks around an active chest are protected from breaking and placing. Removed automatically when the chest disappears or is opened. Uses real WorldGuard regions when WorldGuard is installed; falls back to built-in event blocking otherwise.

chest-protection-zone:
enabled: true
radius: 5 # 11×11 area

Protection plugin integration
Chests no longer spawn inside claimed territories. Detected automatically — no extra setup needed beyond having the plugin installed.

Supported: WorldGuard · GriefPrevention · GriefDefender · Lands

Permission-based broadcasts
All announcements now respect individual permission nodes. On servers where all permissions are denied by default, grant the spawnchest.notify.* nodes to the default group.

Permission Controls
spawnchest.notify.spawn Spawn announcement + title
spawnchest.notify.coordinates Coordinates in announcement
spawnchest.notify.disappear Disappear announcement
spawnchest.notify.countdown Countdown warnings
spawnchest.notify.bossbar BossBar visibility
Chest lifetime overhaul

• Unopened chest — disappears after chest-disappear-minutes from spawn time
• Opened chest — disappears after another full chest-disappear-minutes from the moment it was opened

The two timers are independent. Opening a chest gives players the full window to loot it.

BossBar improvements

• Pre-open countdown shown in BossBar with configurable color
• After chest is opened: bar switches to a dimmed "opened · disappears in Xs" state
• show-countdown and show-active-chest flags now correctly hide the bar when both are off
• BossBar re-initialises on /reloadchestconfig without a server restart

Minecraft 26.1 / 26.1.1 support
Mojang introduced a new versioning scheme in 2026 (year.drop instead of 1.X). The version adapter now handles both formats transparently. No plugin changes needed on the server side — drop in the new jar and go.

Bug fixes

• Batch spawning — second and third chests in a batch were blocked by the spawnInProgress flag from the previous chest. Replaced fixed delays with a queue that waits for each spawn to finish before starting the next.
• Particle errors — END_ROD and BLOCK_CRACK particles require explicit Float data in 1.21.10+. Fixed with correct types and a try-catch fallback for unsupported versions.
• Paper 26.1 detection — the old PaperConfig class was removed in the Paper hard-fork. Added ServerBuildInfo and server-name fallback checks.
• BossBar visible when disabled — the bar stayed visible after setting show-countdown: false. Bar now hides explicitly when there is nothing to show.

Config changes
New sections added — existing configs are fully backward-compatible. Add the new sections manually or delete config.yml to regenerate it.

# New in 4.4
settings:
chest-count-per-interval: 1
chest-spawn-delay-seconds: 5
spawn-zone:
exclude-surfaces:
water: true
lava: true
leaves: true
ice: true
magma: true
cactus: true
sand: false
gravel: false
netherrack: false

pre-open-timer:
enabled: true
duration-seconds: 30
announce-at-seconds: [30, 20, 10, 5, 3, 2, 1]
show-in-bossbar: true
bossbar-color: PINK
notify-radius: 20.0

chest-protection-zone:
enabled: true
radius: 5
use-worldguard: true
worldguard-region-prefix: "spawnchest"
notify-players: true

protection:
enabled: true
check-worldguard: true
check-grief-prevention: true
check-grief-defender: true
check-lands: true
max-protection-retries: 20

world-apple-drop:
enabled: false
apple-type: random
spawn-method: near-chest
radius: 15
announce-coordinates: true
persist-until-pickup: true

summoner-apple:
random:
enabled: true
drop-in-legendary: true
drop-chance: 0.05
common:
enabled: true
drop-in-legendary: false
rare:
enabled: true
drop-in-legendary: false
legendary:
enabled: true
drop-in-legendary: false

Compatibility
Minecraft 1.18 – 1.21.x · 26.1 · 26.1.1
Server software Spigot · Paper · Purpur · Pufferfish
Protection plugins WorldGuard · GriefPrevention · GriefDefender · Lands
Java 17+