CircleEffect.java

package de.slikey.effectlib.effect;

import de.slikey.effectlib.Effect;
import de.slikey.effectlib.EffectManager;
import de.slikey.effectlib.EffectType;
import de.slikey.effectlib.util.ParticleEffect;
import de.slikey.effectlib.util.VectorUtils;
import org.bukkit.Location;
import org.bukkit.util.Vector;

public class CircleEffect extends Effect {


    /*
     * ParticleType of spawned particle
     */
    public ParticleEffect particle = ParticleEffect.VILLAGER_HAPPY;

    /*
     * Rotation of the torus.
     */
    public double xRotation, yRotation, zRotation = 0;

    /*
     * Turns the cube by this angle each iteration around the x-axis
     */
    public double angularVelocityX = Math.PI / 200;

    /*
     * Turns the cube by this angle each iteration around the y-axis
     */
    public double angularVelocityY = Math.PI / 170;

    /*
     * Turns the cube by this angle each iteration around the z-axis
     */
    public double angularVelocityZ = Math.PI / 155;

    /*
     * Radius of circle above head
     */
    public float radius = .4f;

    /*
     * Current step. Works as a counter
     */
    protected float step = 0;

    /*
     * Subtracts from location if needed
     */
    public double xSubtract, ySubtract, zSubtract;

    /*
     * Should it rotate?
     */
    public boolean enableRotation = true;

    /*
     * Amount of particles per circle
     */
    public int particles = 20;

    public CircleEffect(EffectManager effectManager) {
        super(effectManager);
        type = EffectType.REPEATING;
        period = 2;
        iterations = 50;
    }

    @Override
    public void reset() {
        this.step = 0;
    }

    @Override
    public void onRun() {
        Location location = getLocation();
        location.subtract(xSubtract, ySubtract, zSubtract);
        double inc = (2 * Math.PI) / particles;
        double angle = step * inc;
        Vector v = new Vector();
        v.setX(Math.cos(angle) * radius);
        v.setZ(Math.sin(angle) * radius);
        VectorUtils.rotateVector(v, xRotation, yRotation, zRotation);
        if (enableRotation) {
            VectorUtils.rotateVector(v, angularVelocityX * step, angularVelocityY * step, angularVelocityZ * step);
        }
        display(particle, location.add(v), 0, 30);
        step++;
    }

}