FluxAPI_v1/src/main/java/me/lethunderhawk/fluxapi/util/animation/Animation.java

package me.lethunderhawk.fluxapi.util.animation;

import me.lethunderhawk.fluxapi.FluxService;
import me.lethunderhawk.fluxapi.main.FluxAPI;
import org.bukkit.Bukkit;
import org.bukkit.World;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scheduler.BukkitTask;

public abstract class Animation {

    protected final JavaPlugin plugin;
    protected final World world;
    protected int tick = 0;
    protected int duration;

    private BukkitTask task;
    private Runnable onComplete;

    protected Animation(World world, int duration) {
        this.plugin = FluxService.get(FluxAPI.class);
        this.world = world;
        this.duration = duration;
    }

    public final void start() {
        onStart();
        task = Bukkit.getScheduler().runTaskTimer(plugin, () -> {
            if (tick >= duration) {
                stop(true);
                return;
            }
            onTick(tick);
            tick++;
        }, 0L, 1L);
    }

    public final void stop(boolean completed) {
        if (task != null) task.cancel();
        onEnd();
        if (completed && onComplete != null) {
            onComplete.run();
        }
    }

    public void onComplete(Runnable runnable) {
        this.onComplete = runnable;
    }

    protected abstract void onStart();
    protected abstract void onTick(int tick);
    protected abstract void onEnd();
}