@SubscribeEvent
public void playerTick(PlayerTickEvent event) {
event.player.width = 0.5F;
event.player.height = 0.5F;
event.player.eyeHeight = (float) 0.5F;
event.player.boundingBox.setBB(AxisAlignedBB.getBoundingBox((double)event.player.boundingBox.minX, (double)event.player.boundingBox.minY, (double)event.player.boundingBox.minZ, (double)event.player.boundingBox.minX + 0.5D,(double) event.player.boundingBox.minY + 0.5D,(double) event.player.boundingBox.minZ + 0.5D));
}