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SetRandomPotionFunction.java
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SetRandomPotionFunction.java
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package org.auioc.mcmod.arnicalib.server.loot.function;
import java.util.ArrayList;
import java.util.List;
import org.auioc.mcmod.arnicalib.base.random.RandomUtils;
import org.auioc.mcmod.arnicalib.base.validate.Validate;
import org.auioc.mcmod.arnicalib.server.loot.AHLootItemFunctions;
import org.auioc.mcmod.arnicalib.utils.game.OrderedForgeRegistries;
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.GsonHelper;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.alchemy.Potion;
import net.minecraft.world.item.alchemy.PotionUtils;
import net.minecraft.world.level.storage.loot.LootContext;
import net.minecraft.world.level.storage.loot.functions.LootItemConditionalFunction;
import net.minecraft.world.level.storage.loot.functions.LootItemFunctionType;
import net.minecraft.world.level.storage.loot.predicates.LootItemCondition;
import net.minecraftforge.registries.ForgeRegistries;
public class SetRandomPotionFunction extends LootItemConditionalFunction {
private final List<Potion> potions;
private final boolean isBlacklist;
protected SetRandomPotionFunction(LootItemCondition[] conditions, List<Potion> potions, boolean isBlacklist) {
super(conditions);
this.potions = potions;
this.isBlacklist = isBlacklist;
}
@Override
public LootItemFunctionType getType() {
return AHLootItemFunctions.SET_RANDOM_POTION.get();
}
@Override
protected ItemStack run(ItemStack stack, LootContext ctx) {
if (this.potions.isEmpty()) {
return PotionUtils.setPotion(stack, getRandomPotion());
} else {
if (this.isBlacklist) {
Potion potion;
while (true) {
potion = getRandomPotion();
if (!this.potions.contains(potion)) {
break;
}
}
return PotionUtils.setPotion(stack, potion);
}
return PotionUtils.setPotion(stack, RandomUtils.pickOneFromList(this.potions));
}
}
private static Potion getRandomPotion() {
return RandomUtils.pickOneFromList(OrderedForgeRegistries.POTIONS.get()).getValue();
}
public static class Serializer extends LootItemConditionalFunction.Serializer<SetRandomPotionFunction> {
public void serialize(JsonObject json, SetRandomPotionFunction instance, JsonSerializationContext ctx) {}
public SetRandomPotionFunction deserialize(JsonObject json, JsonDeserializationContext ctx, LootItemCondition[] conditions) {
List<Potion> potions = new ArrayList<Potion>();
boolean isBlacklist = false;
if (json.has("potions")) {
JsonArray potionsJson = GsonHelper.getAsJsonArray(json, "potions");
if (!potionsJson.isEmpty()) {
for (JsonElement element : potionsJson) {
ResourceLocation id = new ResourceLocation(GsonHelper.convertToString(element, "potionId"));
Validate.isTrue(ForgeRegistries.POTIONS.containsKey(id), "Unknown potion '" + id + "'");
Potion potion = ForgeRegistries.POTIONS.getValue(id);
potions.add(potion);
}
isBlacklist = GsonHelper.getAsBoolean(json, "blacklist", false);
}
}
return new SetRandomPotionFunction(conditions, potions, isBlacklist);
}
}
}