src/main/java/io/github/moulberry/notenoughupdates/mixins/MixinEntityAgeable.java


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/*
 * Copyright (C) 2022 NotEnoughUpdates contributors
 *
 * This file is part of NotEnoughUpdates.
 *
 * NotEnoughUpdates is free software: you can redistribute it
 * and/or modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * NotEnoughUpdates is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
 */

package io.github.moulberry.notenoughupdates.mixins;

import net.minecraft.entity.EntityAgeable;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;

@Mixin(EntityAgeable.class)
public class MixinEntityAgeable {
	@Shadow
	protected int growingAge;

	// Fix NPE in vanilla code, that we need to work for VillagerTradeRecipe
	@Inject(method = "getGrowingAge", cancellable = true, at = @At("HEAD"))
	public void onGetGrowingAge(CallbackInfoReturnable<Integer> cir) {
		if (((EntityAgeable) (Object) this).worldObj == null)
			cir.setReturnValue(growingAge);
	}
}