Minecraft – Test for item in output slot of furnace

minecraft-commandsminecraft-java-edition

When i put this command in a command block:

/testforblock ~ ~1 ~-3 minecraft:furnace 0 {Items:[{id:"minecraft:iron",Slot:1b}]}

It gave this error:

The block at 137,85,401 is Furnace (expected: Furnace).

And when i put this in the command block:

/testforblock ~ ~1 ~-3 minecraft:furnace {Items:[{id:"minecraft:iron",Slot:1b}]}

It gave this error:

'{Items:[{id:"minecraft:iron",Slot:1b}]}' is not a valid number

I'm trying to test for an iron ingot in the output slot. Anyone know how to do this?

Best Answer

There are two types of furnaces:

furnace (furnace turned off)
lit_furnace (Furnace when burning something)

The data Value has to be -1 or the actual rotation of the furnace (-1 means it does not matter).

So change your command to:

/testforblock x y z minecraft:lit_furnace -1

The output slot is 2b and iron is called iron_ingot:

/testforblock x y z minecraft:furnace -1 {Items:[{Slot:2b,id:"minecraft:iron_ingot"}]}
/testforblock x y z minecraft:lit_furnace -1 {Items:[{Slot:2b,id:"minecraft:iron_ingot"}]}

You would have to test if one of these testfors was successful (basically do your redstone 2 times, one for each command).

Source.

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Minecraft – Test for approximate rotation

Here's a video by MNSweet demonstrating rotational direction detection:

Rather than checking the NBT data (i.e. using {}), rotation can be tested for using the target selector arguments ry, rym, rx, and rxm, denoting the maximum and minimum view angle in the horizontal (east, south, etc.) and vertical (up, down) direction, respectively.

For example, to test for someone looking South (=0±22), use

testfor @a[ry=22,rym=-22]

To test for someone looking 45° upwards (±10) and to the northeast (=135±22)

testfor @a[ry=-113,rym=-157,rx=55,rxm=35]

See Commands wiki page for more information.

Minecraft – How to set Command Block(s) to test for a particular time and output a message

An easier option might be to use a daylight sensor. Set it up with a string of Redstone and see how far the signal is when you set the time (/time set 18000).

Then, you can do something tricky like this to invert the signal:

enter image description here

What this will do, is when the signal from the daylight sensor dies, the Redstone torch will be turned on, firing up the command block.

enter image description here

Best Answer

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Minecraft – Test for approximate rotation

Minecraft – How to set Command Block(s) to test for a particular time and output a message

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