Minor For both CraftWorld and CraftPlayer it's not passing in the data argument.
@Override public <T> void spawnParticle(Particle particle, double x, double y, double z, int count, T data) { spawnParticle(particle, x, y, z, count, 0, 0, 0); }
Should be:
@Override public <T> void spawnParticle(Particle particle, double x, double y, double z, int count, T data) { spawnParticle(particle, x, y, z, count, 0, 0, 0, data); }
