import buildcraft.api.core.BuildCraftAPI; //导入依赖的package包/类
@Override
public void writeToWorld(IBuilderContext context, int x, int y, int z, LinkedList<ItemStack> stacks) {
	if (isConcrete) {
		if (stacks.size() == 0 || !BuildCraftAPI.isSoftBlock(context.world(), x, y, z)) {
			return;
		} else {
			ItemStack stack = stacks.getFirst();

			// force the block to be air block, in case it's just a soft
			// block which replacement is not straightforward
			context.world().setBlock(x, y, z, Blocks.air, 0, 3);

			stack.tryPlaceItemIntoWorld(
					BuildCraftAPI.proxy.getBuildCraftPlayer((WorldServer) context.world()).get(),
					context.world(), x, y, z, 1, 0.0f, 0.0f, 0.0f);
		}
	} else {
		context.world().setBlock(x, y, z, Blocks.air, 0, 3);
	}
}
 

import buildcraft.api.core.BuildCraftAPI; //导入依赖的package包/类
@Override
public void placeInWorld(IBuilderContext context, int x, int y, int z, LinkedList<ItemStack> stacks) {
	if (isConcrete) {
		if (stacks.size() == 0 || !BuildCraftAPI.isSoftBlock(context.world(), x, y, z)) {
			return;
		} else {
			ItemStack stack = stacks.getFirst();

			// force the block to be air block, in case it's just a soft
			// block which replacement is not straightforward
			context.world().setBlock(x, y, z, Blocks.air, 0, 3);

			stack.tryPlaceItemIntoWorld(
					BuildCraftAPI.proxy.getBuildCraftPlayer((WorldServer) context.world()).get(),
					context.world(), x, y, z, 1, 0.0f, 0.0f, 0.0f);
		}
	} else {
		context.world().setBlock(x, y, z, Blocks.air, 0, 3);
	}
}
 

import buildcraft.api.core.BuildCraftAPI; //导入依赖的package包/类
/**
 * By default, block class name, block tile name and block name are used to define block signature. Overriding this subprogram may allow to replace some of
 * these with stars, specify the mod that this block kind is coming from or add custom data to the signature.
 */
public BlockSignature getSignature(Block block) {
	BlockSignature sig = new BlockSignature();

	if (block.blockID > BuildCraftAPI.LAST_ORIGINAL_BLOCK) {
		sig.blockClassName = block.getClass().getSimpleName();

		if (block instanceof BlockContainer) {
			// TODO: Try to see if we can get a world instance to call with instead of null
			TileEntity tile = ((BlockContainer) block).createNewTileEntity(null);

			if (tile != null) {
				sig.tileClassName = tile.getClass().getSimpleName();
			}
		}
	}

	sig.blockName = block.getUnlocalizedName();
	sig.replaceNullWithStar();

	return sig;
}
 

import buildcraft.api.core.BuildCraftAPI; //导入依赖的package包/类
@Override
public boolean isAlreadyBuilt(IBuilderContext context, int x, int y, int z) {
	if (isConcrete) {
		return !BuildCraftAPI.isSoftBlock(context.world(), x, y, z);
	} else {
		return BuildCraftAPI.isSoftBlock(context.world(), x, y, z);
	}
}
 

import buildcraft.api.core.BuildCraftAPI; //导入依赖的package包/类
public static ItemSignature getItemSignature(Item item) {
	ItemSignature sig = new ItemSignature();

	if (item.itemID >= Block.blocksList.length + BuildCraftAPI.LAST_ORIGINAL_ITEM) {
		sig.itemClassName = item.getClass().getSimpleName();
	}

	sig.itemName = item.getUnlocalizedName(new ItemStack(item));

	return sig;
}