DarkPotions.java

package fox.spiteful.forbidden.potions;

import fox.spiteful.forbidden.Config;
import fox.spiteful.forbidden.compat.Compat;
import net.minecraft.potion.Potion;
import net.minecraft.util.ResourceLocation;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

public class DarkPotions {
    public static final ResourceLocation icons = new ResourceLocation("forbidden", "textures/misc/potions.png");
    public static Potion bloodSeal;
    public static Potion dragonwrack;

    public static void alchemize(){
        if(Potion.potionTypes.length < 256) {
            Potion[] potionTypes = null;
            for (Field f : Potion.class.getDeclaredFields()) {
                f.setAccessible(true);
                try {
                    if (f.getName().equals("potionTypes") || f.getName().equals("field_76425_a")) {
                        Field modfield = Field.class.getDeclaredField("modifiers");
                        modfield.setAccessible(true);
                        modfield.setInt(f, f.getModifiers() & ~Modifier.FINAL);
                        potionTypes = (Potion[]) f.get(null);
                        final Potion[] newPotionTypes = new Potion[256];
                        System.arraycopy(potionTypes, 0, newPotionTypes, 0, potionTypes.length);
                        f.set(null, newPotionTypes);
                    }
                } catch (Exception e) {
                    System.err.println("Severe error, please report this to the mod author:");
                    System.err.println(e);
                }
            }
        }

        if(Compat.bm)
            bloodSeal = new PotionBloodSeal(Config.bloodSealPotionID);
    }
}