ItemFrameMixin.java

package dev.isxander.debugify.mixins.basic.mc123848;

import dev.isxander.debugify.fixes.BugFix;
import dev.isxander.debugify.fixes.FixCategory;
import net.minecraft.core.Direction;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.decoration.HangingEntity;
import net.minecraft.world.entity.decoration.ItemFrame;
import net.minecraft.world.entity.item.ItemEntity;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.Level;
import org.spongepowered.asm.mixin.Mixin;

/**
 * Taken from a Paper patch attributed to BillyGalbreath
 * <a href="https://github.com/PaperMC/Paper/blob/4f79e9eeca8549c72794f53e88c075c1eba46c58/paper-server/patches/sources/net/minecraft/world/entity/decoration/ItemFrame.java.patch#L59">patch</a>
 * <p>
 * Licensed under MIT
 * <a href="https://github.com/PaperMC/Paper/blob/main/LICENSE.md">license</a>
 */
@BugFix(id = "MC-123848", category = FixCategory.BASIC, env = BugFix.Env.SERVER, description = "Item frames (and items within) when removed from a ceiling, drop atop, not under, the block")
@Mixin(ItemFrame.class)
public abstract class ItemFrameMixin extends HangingEntity {
    protected ItemFrameMixin(EntityType<? extends HangingEntity> entityType, Level level) {
        super(entityType, level);
    }

    @Override
    public ItemEntity spawnAtLocation(ServerLevel level, ItemStack stack) {
        return this.spawnAtLocation(level, stack, this.getDirection() == Direction.DOWN ? -0.6F: 0.0F);
    }
}