particleCreater

Add precise control over where particle effects appear:

• Use absolute or ~ relative coordinates with /pc play, /pc spawn, and /pc preview.
• Save persistent server-wide positions with /pc location, then use at saved <name>.
• Use at player <player> to capture an online player's current position.
• See detailed English errors identifying the failing command, field, formula, layer, or playback run.
• Benefit from improved validation and performance safeguards.

Requires Paper 26.2 and Java 25. This is a server-side preview build. Automated tests pass, but in-game behavior still needs server testing.