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1.1 Blocks and Items

Quantum Ore

Quantum ore
Quantum ore spawns in the world and can be mined. Other quantum blocks (qBlocks) always require quantum dust (or a crafting ingredient that itself requires quantum dust). When a Minecraft world is created with the qCraft Mod installed, quantum ore spawns naturally in a manner similar to redstone ore (in the bottom 16 layers of the Minecraft world), but is rarer, appearing only four times per chunk instead of eight. As of version 1.01 of the mod, it is possible to disable generation of Quantum Ore in the configuration settings. 

Quantum ore can only be mined with an iron pickaxe or better. When mined, it drops Quantum Dust in a manner similar to Redstone.

Quantum Dust

Quantum Dust
Quantum dust drops from quantum ore. In version 1.01 and later, if enabled in the configuration settings, it is also possible to enable the crafting Quantum Dust by combining a single unit of redstone with lime green dye. It is recommend that users enable this setting if the generation of Quantum Ore is disabled during world creation, otherwise there is no path to crafting quantum items. Quantum Dust used in creating the following items:

            • essence of superposition (EoS)
            • essence of entanglement (EoE)
            • essence of observation (EoO)

Essence of Observation

Essence of Observation (EoO) is a crafted item that itself has no function but is used as an ingredient in quantum crafting recipes to imbue other crafted items with Quantum behavior. It is made by combing four units of Quantum Dust as follows:

 Ingredients  Input  »  Output

Quantum dust

Essence of Superposition

Like EoO, essence of obserservation (EoS) is a crafting ingredient used in certain quantum crafting recipes. It is also made from Quantum Dust as follows:

 Ingredients  Input  »  Output

Quantum dust

Essence of Entanglement

Like EoS and EoO, EoE is a crafting ingredient used in certain quantum crafting recipes. It is also made from Quantum Dust and EoS as follows:

 Ingredients  Input  »  Output

Quantum dust

Essence of Superposition

Observer Dependent Block (ODB)

Observer dependent blocks (ODBs)exhibit properties of any non-fluid, non-nether standard Minecraft blocks used in its construction, but only when observed in certain ways.

ODBs are crafted by placing EoO in the center slot of the crafting table and then placing the standard Minecraft blocks around it. The position of the standard blocks in the crafting grid determines how the ODB will resolve when first observed as follows:

Consider the following example:

In this case, once the resulting ODB is placed in the world, it will appear as stone 100% of the time if either its north or south face is the first observed. If its east face is observed, it will always appear as gravel and if its west face is the first observed it will always appear as dirt. If the top or bottom face is the first observed, it will remain invisible and permeable (as if no block was there).

The following video provides an example of crafting ODBs and what they can do:

As indicated by the above examples, the rules for determining how an ODB resolves upon first observation are as follows:

1. Determine the face upon which the block is first being observed (either north, south, east, west top or bottom).

2. Consult the crafting recipe used to make that face of the block and resolve the ODB to the block used in the corresponding slot in the crafting recipe (or to air if no block was used in that slot)

Note that when an ODB resolves based on observation, the entire block resolves to the block type dictated by the above rules, not just the face or axis that was observed. When an ODB resolves based on observation, it resolves to the same definitive state for all players in the world (even those players who did not perform the observation). Once an ODB is observed, it will remain in whatever state the observation yielded, until it is first no longer observed by anyone and then is observed by someone anew, at which time in will resolve again based on the observation rules. In other words, the block remains in the state it resolved to upon observation even when no one is observing it any longer until another observation occurs. In a multiplayer situation, this means that a) the first observer of a block will determine its state and b) the block will stay in that state until it’s not observed by any player and then observed anew by someone.

In the inventory, ODBs will stack with other ODBs made with an identical crafting recipe. In the inventory, they will appear as an animated block with an appearance that indicates their changeable nature. When placed in the world, their appearance will be governed by the observation rules. When held by the player until placed in the world, an ODB will cycle visually among its possible states, interleaved with an animation intended to evoke quantum uncertainty.

ODBs can be made with Redstone blocks. This makes it possible to power constructions in Minecraft based on observational dependency.

Effects that can be achieved with ODBs

Phasing -- by leaving a directional space blank in the crafting recipe, the block will be both invisible and permeable when it resolves to the state represented by the empty slot

Chameleon -- the ODB block will resolve to a standard minecraft block when viewed from the indicated direction. ‘Chameleon’ blocks take on several characteristics of the blocks they resolve to, such as:
  • appearance
  • flammability
  • transparency
  • item drops
  • required mining tools
  • redstone signals (if crafted with a redstone block, will transmit a redstone signal)
  • light source (i.e. glowstone)

Gravity - ODBs will fall when unsupported if they resolve to a block affected by gravity (e.g. sand, gravel).

Quantum Block (qB)

This block is crafted similarly to the standard ODB except EoS is used in crafting recipe rather than EoO, as in:

Consider the following example:

In this case, once the resulting QB is placed in the world, it will appear as stone 100% of the time if either its north or south face is the first observed. If its east or west face is the first observed, it will have a chance of appearing as dirt and a chance of appearing as gravel. If the top or bottom face is the first observed, it will remain invisible and permeable (as if no block was there).

As indicated by that example, the rules for determining how an QB resolves upon first observation are as follows:

1. Determine the axis upon which the the block is first being observed (either north-south, east-west or up-down)
2. Consult the crafting recipe used to make the block for that axis
3. If the same standard block was used in both of that axis’ crafting slots (or if both slots were empty), resolve the ODB to that block (or to nothing if both slots were empty)
4. If different standard blocks were used in both that axis’ crafting slots (or if one of the slots was empty), it will resolve to one or the other.

Other than its quantum nature as described in the rules above, the rules, behaviors and effects that can be achieved with the qB are the same as the standard ODB.

Entangled Block (EB)

Players can create entangled blocks (EBs) from any ODB or QB.  Entangled blocks take on the same characteristics as the ODB/QB they are created from.  Entangled blocks created at the same time will always be in the same state, no matter where they are in the world. This means that if any one of a set of entangled blocks is observed, all the other blocks in that set will resolve to the same state instantaneously, no matter where in the world they are.

New EBs can be crafted as follows as of version 1.01 of the mod

 Ingredients  Input  »  Output

Observer dependent block
Quantum Block (X 2)

Essence of entanglement

In this case, the ODBs or QBs used in both slots must have been made with identical crafting recipes.

To add additional EBs to an existing group of EBs, this recipe should be used:

 Ingredients  Input  »  Output
Existing Entangled Block

Observer dependent block
Quantum Block (X 2)

Essence of entanglement

Quantum Goggles (qG)

The Player can create a special pair of goggles that can be worn in the slot typically reserved for helmets.  With them equipped, the player can see the 'superpositional' state of all ODBs, EBs and QBs in the world. This allows the player to see otherwise hidden or camouflaged blocks.  It also can lead to certain puzzle that require the goggles to complete.

The crafting formula is as follows:

 Ingredients  Input  »  Output

Quantum dust

Glass pane

Anti-Observation Goggles (AOG)

When equipped in the helmet slot, the Anti-Observation Goggles prevent the player from causing quantum observations. In other words, from the perspective of any quantum blocks/phenomenon in the game, it is as if that player isn’t there. Unlike the Quantum Goggles, quantum blocks are not rendered visible by the Anti-Observation Goggles. Note that even if a player has the AOG equipped, other observers in the vicinity of the player can still cause observations, which the player will still see happening even if he has the AOG equipped. AOG can be useful in a multiplayer setting where it is only desirable for some but not all players to trigger observations (for example when trying to solve certain kinds of puzzles).

The crafting formula is as follows:

 Ingredients  Input  »  Output


Glass pane

Automated Observer (AO)

The AO is a redstone device that, when powered, causes a quantum observation to occur. This can be useful for triggering quantum phenomena remotely via a redstone signal without having a player physically present to cause the observation.

Note that AO are directional when placed (similar to, e.g., pistons). When placing an AO, the ‘input’ side (i.e. the side that should be connected to the redstone signal source) will always be placed at the side nearest the player, without the output side (the side that acts as the observer when powered) directly opposite it. By standing on the block where you intend the redstone signal to come from and facing the thing you intend for the AO to observe, you will achieve the proper placement. The output side of the block must be adjacent to and touching the block you intend to observe.

The crafting formula is as follows:

 Ingredients  Input  »  Output



Redstone Dust

Quantum Computer

The Quantum Computer is used as a component of the quantization/teleportation system (see Quantization/Teleportion). As of version 1.1, quantum computers can be energized for teleportation and portal purposes via a redstone signal. Its crafting recipe is:

 Ingredients  Input  »  Output

Quantum dust

Glass pane

Iron ingot

Entangled Quantum Computer 

The Entangled Quantum Computer is used as the main component of the teleportation system (see Quantization/Teleportation). Its crafting recipe is:

 Ingredients  Input  »  Output

Quantum computer

Essence of entanglement


Quantization/teleportation uses the power of quantum computers to ‘digitize’ a region of the Minecraft world. This region can then be copied (quantization) or transported instantly (teleportation) to another place in the world. A single QC is required for quantization, whereas an entangled pair is required for teleportation.

Constructing the teleporter matrix is (intentionally) a bit technical, so you may find this video tutorial helpful:

How to Build a Quantizer / De-Quantizer Matrix:

1. Collect resources
  • Obsidian 
  • Full Gold blocks
  • Ice (requires pickaxe with the "silk touch" enchantment")
  • Glass blocks

2. Craft the required ODBs
Each one resolves to gold when observed from a different cardinal direction, otherwise it resolves to obsidian. We’ll call these the ‘anchor ODB’s’.

3. Craft the quantum computer (qC) (see Quantum Computer, above)

4. Construct the Matrix
  • Choose an area to quantize
  • In the center, place the qC adjacent to an ice block to provide cooling
  • On the perimeter, build 4 Pylons from Obsidian and ODB along each cartesian axis (N, S, E, W), aligned with the qC. The pylon should be anchored by the anchor ODB’s, which must be on the same level as the QC. The Anchor ODBs must be placed such that the gold block face “resolves” in the direction of the QC.  Obsidian should then be placed above and/or below the anchor ODB to indicate the height (or depth) of the area to be quantized. The total area to be quantized may extend up to 16* blocks on any side of the anchor ODBs on the x, y and z axes.
  • Place a single glass block on the top of each pillar (this is important so the device does not violate Special Relativity)
  • If you wish to teleport, recreate the exact same matrix in the destination location using the paired Entangled QC. If you wish to quantize, recreate the exact same martix at the destination location but do not place a QC there.
*The maximum number blocks that the quantization field can extend can be configured in the qcraft config file. Default is 8.

5. Use the quantum computer
  • Right click the QC to access a control menu GUI
  • Select quantize or teleport

6a. If quantizing, mine and collect the QC. Transport it to the destination location, place it within the matrix and access the QC’s menu to de-quantize.

6b. If teleporting, the contents of the two matrices are instantly swapped.

Reasons Quantized Teleportation could fail

  • The qC / pylon matrix dimensions don’t exactly match at origin and destination
  • Destination is abutting water or lava that could flow in and damage structures
  • Source / destination contains blocks with extra info (Tile Entities) that would be lost in the transfer (e.g. any blocks with an inventory, like chests, furnaces and hoppers and blocks from other mods with unusual data storage methods.)

Quantum Portals

Quantum portals use Quantum Computers to establish a link through which players can instantaneously travel between two points in the same Minecraft world (intra-server portals) or between a specific point in the world on one Minecraft server and a specific point in the world on a different Minecraft server (inter-server or server-to-server portals). Players can travel through a portal, come out the other side at a pre-set destination and, if they like, take their inventory with them.

Important Notes

  • Portals only work between points in the same dimension (e.g. you cannot create a portal between the overworld and the nether).
  • To facilitate portals, all servers involved and the user’s client must have the qCraft mod installed.
  • You cannot use a portal to gain access to a server to which you would not ordinarily have access if you attempted a normal login (e.g. if you lack the password, are banned, etc.).
  • Depending on configuration options set by the server admin, it may only be possible for administrators (not ordinary users) to activate portals and/or to establish the initial portal link between two different servers. Administrators may also configure the mod to allow any user to activate portals and/or establish portal links.
  • Irrespective of who may set up portals (per the above), any user of a server may travel through an existing portal (assuming he also has access to the destination server if travelling inter-server).
  • When travelling intra-server, your inventory always comes with you.
  • When travelling inter-server, you will receive a prompt asking you if you want to take your inventory with you. If you select this option, you will be transported to the destination server with your inventory. Note that this will result in you having an empty inventory on the source server (unless you travel back through a portal to the source server with your inventory). If you take your inventory with you, a failure during the connection process to the destination server may result in a loss of your inventory, though if you log back into the source server within 24 hours of the failed attempt, your inventory should be restored. The inventory is added to your current inventory on the destination server (if any).
  • Un-entangled quantum computers containing quantized data may be transported through a portal in your inventory with the quantized data intact. This can be used to transport, e.g., a structure through a portal by quantizing it, mining the quantum computer and placing it in your inventory, traveling through a portal, constructing a quantizer matrix of the same dimensions and placing the quantum computer in it and de-quantizing.

Constructing a Quantum Portal

Quantum portals are constructed in a manner similar to nether portals. To build one, you will need the following materials:

  • Obsidian
  • Full gold blocks
  • Full glass blocks
  • Ice
  • Essence of Observation
  • Quantum Computer (un-entangled)
  1. As with the teleporters, you will need to construct four anchor ODBs. In this case, all four will have the exact same recipe. The blocks should have obsidian in all slots except the two slots along the axis that represents the direction of travel, which should be gold. In other words, when the portal is complete, these ODBs should resolve to gold when viewed from either of the directions through which you can travel through the portal and should resolve to obsidian when viewed from all other directions.

  2. Place two of the anchor ODBs on the ground (or wherever you want the base of the portal frame to be) with at least two** empty spaces between them.

  3. Place glass blocks in each of the two empty spaces you left in step 2.

  4. Place at least three** glass blocks on top of each of the anchor ODBs you placed in Step 2.

  5. Place an anchor ODB on top of each of the topmost glass blocks you placed in Step 4.

  6. Place two more glass blocks in between the ODBs you placed in Step 5. You should now have a completed frame made of glass with ODBs in each corner.

  7. Place a quantum computer (un-entangled) adjacent to the portal frame.

  8. Place a block of ice adjacent to the quantum computer (to provide cooling).
**The maximum number of glass blocks, determining the maximum portal size, can be configured in the qcraft config file. Default is 5. 

For the minimum portal size, your completed construction should look like this:

Establishing Portal Links and Activating Portals

Note, per the above, that not all users may be permitted to establish portal links on a given server.

  1. In the ‘This Portal’ field, enter a unique name for this particular portal (e.g. ‘Mushroom Beach’ or ‘Mountain Temple’). If you do not wish to set a destination, you can hit Escape at this point (the name you entered will be saved).

  2. If you wish to set up a destination, enter the name of destination portal in the appropriate field.

  3. If your destination is on the same server, leave the ‘On This Server’ option active.

  4. If your destination is on a different server, click the ‘On This Server’ button to cycle through a list of servers to which connections are allowed. Depending on your admin’s configuration, you may also be able to specify a server address by clicking the ‘+’ button and entering the server address and clicking ‘OK’.

  5. Once setup is complete, click ‘Energize’ to activate the portal. The portal will now glow green to indicate its active state:

Portal Mechanics

Though portals may have only one destination at a given time, the portal system allows for a variety of different setups:

  • If you configure a portal per the above, it represents a one-way quantum tunnel between that portal and its destination portal. Stepping into, e.g. Portal 1 will take you to Portal 2, but not vice versa.
  • If you repeat the procedure on the destination portal and set up the reciprocal relationship (e.g. Portal 1 → Portal 2 and Portal 2 → Portal 1), you will effectively pair the two portals. In this scenario, entering, e.g., Portal 1 will always send you out at Portal 2 and vice versa.
  • It is possible to have any number of portals connect to the same destination portal. For example, Portals 1, 2 and 3 could all have a single portal (call it Portal 4) as their destination. This could be used, e.g., to allow players to access a central location from a variety of entry points.
  • Similarly, you can also daisy chain portals. For example, stepping into Portal 1 could take you to Portal 2. Stepping into Portal 2 could take you to Portal 3, etc.

The above apply to both intra- and inter-server tunnels.

Once a particular portal’s destination is set, it can be viewed by right clicking on the quantum computer. Users with appropriate permissions (depending on server setup) can deactivate a portal, change its destination and reactivate it.

Removing any of the blocks making up the portal frame, the QC or the ice will cause the portal to deactivate. The settings will be saved and the portal can be reactivated by repairing it and re-activating it through the qc GUI.

Once a user who is authorized to create and verify portals on a given server actually travels through an inter-server portal link, he will receive a prompt asking him to verify the connection (accomplished by typing '/qcraft verify' in chat). Once verified, that server will be available to other authorized users of the source server as a destination for them to create their own portals.

Missing Item Container (Item)

When playing Minecraft on a server with other mods, besides qCraft, you may want to take some items from an other mod with you to other servers. Since qCraft uses the item's unlocalized name, for instance: "minecraft:stone", to determine a match since qCraft 1.2.2, such an item will not change into an other item on the other server anymore if both server's numeral ID maps mismatch.
However, it is still possible that the destination server completely lacks the item or block you are taking with you. This can either be because of a mod's different configs, or because the destination server is lacking a whole mod. Before qCraft 1.2.2, this would typically cause an error and you would lose most or all other items you were taking to that server as well, without means of retrieval. In most inter-server travels, this item won't be relevant, but for the special cases in which it is, there is the Missing Item Container item.

The Missing Item Container is an item that gets created automatically when a player caries an item to a server that has a "unique name" that does not match the name of any of the items that are loaded on that server at that time. The MIC contains all the information about the original item and if the Missing Item Container is taken to another server through a portal, it will convert back into the original item's information before travel. If the original item does not exist at that new destination server as well, the item will, naturally, be wrapped in a new MIC again.

Reasons Using an Inter-Server Portal Might Fail

  • The user's client can not connect to the destination server (this will likely result in a ‘Connection Refused’ error and the user winding up at the main menu)
    • The destination server is not running or is unreachable
    • The destination server is running (other versions of) mods that you don't have installed on your client
    • The user is not authorized to access the destination server
  • Destination server is running a different version of the qCraft mod
  • The destination portal does not exist or is currently not in an active state (this will result in the user being transported to the destination server but to his default location rather than to the foot of the destination portal)
  • The inter server connection is not verified (yet)