[Bukkit] FireworkEffectAPI: Easy API to create FireworkEffect.

FireworkEffectAPI.java

import java.lang.reflect.Method;

import org.bukkit.Color;
import org.bukkit.FireworkEffect;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.entity.Firework;
import org.bukkit.inventory.meta.FireworkMeta;

public class FireworkEffectAPI {
	
	/**
	 * If you correctly create, return true.
	 * @param loc createLocation
	 * @param effects
	 * @return boolean
	 */
	public static boolean createFireworkEffect(Location loc, FireworkEffect... effects){
		try{
			if(effects.length == 0) return false;
			World world = loc.getWorld();
			Firework firework = (Firework)world.spawn(loc, Firework.class);
			FireworkMeta fireworkMeta = firework.getFireworkMeta();
			for(FireworkEffect effect : effects){
				fireworkMeta.addEffect(effect);
			}
			fireworkMeta.setPower(0);
			firework.setFireworkMeta(fireworkMeta);
			
			Method worldHandle = getMethod(world, "getHandle");
			Method fireworkHandle = getMethod(firework, "getHandle");
			
			Object WorldServer = worldHandle.invoke(world, (Object[])null);
			Object EntityFireworks = fireworkHandle.invoke(firework, (Object[])null);
			
			Method broadcastEntityEffect = getMethod(WorldServer, "broadcastEntityEffect");
			
			broadcastEntityEffect.invoke(WorldServer, new Object[] { EntityFireworks, Byte.valueOf((byte)17) });
			firework.remove();
			return true;
		}catch(Exception ex){
			return false;
		}
	}
	private static Method getMethod(Object obj, String method) throws Exception{
		for (Method m : obj.getClass().getDeclaredMethods()) {
			if (m.getName().equals(method)) {
				return m;
			}
		}return null;
	}
	
	public static FireworkEffect buildEffect(Color[] color, Color[] fadecolor, FireworkEffect.Type type, boolean flicker, boolean trail){
		FireworkEffect.Builder build = FireworkEffect.builder();
		if(color != null) build.withColor(color);
		else build.withColor(Color.RED);
		if(fadecolor != null) build.withFade(fadecolor);
		if(type != null) build.with(type);
		else build.with(FireworkEffect.Type.BALL);
		build.flicker(flicker);
		build.trail(trail);
		return build.build();
	}
}

Sampule.java

    Location location;
    FireworkEffect[] effects = new FireworkEffect[3];
    effects[0] = FireworkEffectAPI.buildEffect(new Color[]{Color.AQUA}, null, FireworkEffect.Type.BALL, false, false);
	effects[1] = FireworkEffectAPI.buildEffect(new Color[]{Color.ORANGE}, new Color[]{Color.YELLOW}, FireworkEffect.Type.BALL_LARGE, true, false);
	effects[1] = FireworkEffectAPI.buildEffect(new Color[]{Color.GREEN,Color.WHITE,Color.OLIVE}, null, FireworkEffect.Type.CREEPER, false, false);
	FireworkEffectAPI.createFireworkEffect(location, effects);

雑なメモ

概要
花火のエフェクトを発生させるサポートをするクラスです。
FireworkEffectAPI.createFireworkEffect　よりエフェクトを発生させられます。

また、buildEffectを使うことでFireworkEffectの作成もサポートします。

nice ;)