Creating a Custom Booster (Java)

Below is an example of an Experience booster. When a player receives exp, the amount received will be multiplied based on the boosters that are active. We locate active personal and global boosters of the required Type and Namespace. If located, we apply the associated multipliers.

package com.insurgencedev.exampleaddon.listeners;

import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerExpChangeEvent;
import org.insurgencedev.insurgenceboosters.api.IBoosterAPI;
import org.insurgencedev.insurgenceboosters.models.booster.GlobalBoosterManager;
import org.insurgencedev.insurgenceboosters.settings.IBoostersPlayerCache;

public final class ExperienceChangeListener implements Listener {

    @EventHandler
    private void onChange(PlayerExpChangeEvent event) {
        final String TYPE = "Experience";
        final String NAMESPACE = "CUSTOM";
        double totalMulti = 1;

        IBoostersPlayerCache.BoosterFindResult pResult = IBoosterAPI.getCache(event.getPlayer()).findActiveBooster(TYPE, NAMESPACE);
        if (pResult instanceof IBoostersPlayerCache.BoosterFindResult.Success boosterResult) {
            totalMulti += boosterResult.getBooster().getMultiplier();
        }

        GlobalBoosterManager.BoosterFindResult gResult = IBoosterAPI.getGlobalBoosterManager().findBooster(TYPE, NAMESPACE);
        if (gResult instanceof GlobalBoosterManager.BoosterFindResult.Success boosterResult) {
            totalMulti += boosterResult.getBooster().getMultiplier();
        }

        event.setAmount((int) (event.getAmount() * totalMulti));
    }
}

Register your listener

For your listener class to take effect, it must be registered.

package com.insurgencedev.exampleaddon;

import com.insurgencedev.exampleaddon.listeners.ExperienceChangeListener;
import org.insurgencedev.insurgenceboosters.api.addon.IBoostersAddon;
import org.insurgencedev.insurgenceboosters.api.addon.InsurgenceBoostersAddon;

@IBoostersAddon(name = "ExampleAddon", version = "1.0.0", author = "Insurgence Dev Team", description = "Example Addon")
public class ExampleAddon extends InsurgenceBoostersAddon {

    @Override
    public void onAddonReloadablesStart() {
        registerEvent(new ExperienceChangeListener());
    }

}