Robot Lumberjack

The Lumberjack Robot is a Robot added by the mod BuildCraft, which has the special ability to use Axes and cut trees down. It can be used, for example, to gather Wood, while the player does other activities. (see Usage). Subsequently, the wood can be collected by the Picker Robot and stored in a chest for use by the player.

Usage


The robot automatically cuts trees down, as the name implies. It can be used to gather wood, so the player can do other activities. Because this is its special ability, it is unable to collect the dropped wood; thus, having a Picker Robot is very useful, and can speed up the process.

The setup to start it up is a little bit complicated, but we will explain it in a step-by-step format, using the example forest in Fig. 1 as a test area.

Needed Items:

 * 4 Land Marks
 * 1 Chest
 * 1 Wooden Transport Pipe
 * 1 Docking Station
 * 1 Emerald AND Gate (or a other type of Emerald Gate if special functions needed)
 * 1 Lever
 * 1 Map Location
 * 1 or more Axes of any type
 * 1 Lumberjack Robot
 * some Dirt and Ladders (amount depends on the tree height)

Step 1: Define Work Zone
In the first step, the player must define the working area of the robot. This is achieved with Land Marks. If the player doesn't define and configure a working area for the robot in Step 3, then the robot will work but will fly around in every active chunk in the world, and clears every tree/forest as well as wood which are included in buildings.

The player must first place three Land Marks in a 90° angle to each, which defines the base of the forest. Now the player can right-click on one of the marks to active the red borders (shown in Fig. 2) which displays the ground area of the work zone.

The two marks on the left and right in the picture may not be more than 64 blocks away from the center mark.

Now, the player must build, for example a dirt tower, over the center until the height where the last wood are present.

On top of the dirt tower, the player must place the fourth Land Mark.

If the player now right-click on any Land Mark, then a red border should be appear which frames a 3-dimensional work zone (shown in Picture 3). If no red border appears, then the Land Marks don't stand in a 90° angel to each other.

To fell the trees, the "Lumberjack" Robot needs a 3-dimensional zone which includes all wood. If the player uses the 2-dimensional zone, which was defined with the three ground marks, the robot mines only the wood on the ground. Each wood block outside the working area is not touched.

Step 2: Control Station
In the second step, the player must build up the control station of the robot. It can be placed anywhere but it is recommend to place it in the near. The following explained control station is a minimum example and can be extended.

The station includes a Chest, with a connected Wooden Transport Pipe, as well as a Docking Station and a Emerald AND Gate which can be placed anywhere on the gate (without disconnecting the chest).

In front of the Emerald Gate, the Lever, and in the chest, the shears, can be placed. Now the station should look like the example in Picture 4.

Step 3: Configuration
The third step is the configuration of the Emerald Gate to control the robot. Also here, this example isn't the only system that works and can be extended.

The player must open the GUI of the Emerald Gate with a right-click, which shows two configurable blocks (one left, one right).

Select all the options as shown in Picture 5. In the first and third row on the right side is a question mark determining whether the options before are selected. That means that something must be put in this slots.

Now only the important configurations to control the robot, which are shown in picture 5, are explained in the following:

A full explanation of all possible functions can be found in the article of the Emerald Gate.

The sequence of rows has no meaning, but only what is in each row. In this example the first or second row may be the blank row.

The option previously required coordinates which must be added by the Map Location.
 * 1) Take the Map Location and right click on one of the Land Marks to receive the coordinates of the working zone (shown in Picture 6). The Map Location should now have a rectangle on the item. Now this map must be placed in GUI of the Emerald Gate in the "question slot" in the first row ("Working area" option). The Map Location should remain stored, and can be reused for the second coordinates.
 * 2) Take the Map Location again and right-click on the Docking Station to receive the coordinates. Note: Here it is important, which side is indicated at the coordinates for the docking station. This is displayed in the player inventory if the cursor is moved on the Map Location. Please check if the specified side is the same where the docking station is, for example UP if the docking station is on the upside of the pipe. Now put the map in the GUI of the Emerald Gate in the question slot in the third row ("Go to station" option).
 * 3) At least put any desired axe in one of the empty slots in the second row on the right side

Now the configuration should appear like in Picture 5 and the control station is configured. The Land Marks and the respective frame are now not longer needed for this example and can be removed. If you want to use the frame for other robots (for example for the "Picker" Robot, make sure you have the coordinates stored in a Map Location.

Step 4: Start and Stop
In the fourth and last step, the "Lumberjack" Robot can be placed on top of the Docking Station (shown in picture 7). At first the robot does nothing because the function in the third row commands the robot to stay on the station.

If the Lever in front of the gate is switched and a redstone signal receives the gate, the first and the second row is active.

After a short time (the update time of the robot), the robot will take a axe out of the chest (second row in the Emerald Gate) and start the work in the defined zone (first row in the Emerald Gate) (shown in picture 8) until there are no wood in the zone more.

Once the axe is broken, which the robot has taken at the start, he return back to the station automatically. Once there, the function on the second row is triggered again, and the robot receives new axe out of the chest (if any are inside) and then continues with the work.

When all trees are felled in the defined working area, the robot automatically returns to the control station. But he still active and will start again to work, when a new tree is grown or wood is placed manually in the working area. The work of the robot can be stopped anytime by switching the lever (in front of the gate) off. When the robot is currently at work, then he returns back to station automatically.

Recharging
If the robot is low on energy, it will begin to seek out a kinesis pipe with a docking station to charge itself. If none are available, it will continue doing its job until its battery dies. The player can also stop the robot with attacks to prematurely drain its battery, causing the to robot drop as item on the ground. Stronger attacks will drain its battery faster. The player can pick up the robot and place in the Charging Table to recharge it. After that, the robot can be placed again on the Docking Station and is again ready to work.