Robot Leaf Cutter

The "Leaf Cutter" Robot is a robot added by BuildCraft, which can be used to automatically cut leaves, which for example subsequently can be collected by the "Picker" Robot and stored in a chest (see Usage).

Usage
The "Leaf Cutter" Robot does, The robot does as the name implies, automatically cut leaves. It's helpful, if the player wants to clear a forest and/or gather leaves. This is already his only ability. The cut leaves fall to the ground and is not collected by this robot. To automatically collect the leaves from the ground, the player needs a Picker Robot.

The setup to start this work is a little bit complicated but now explained step by step on the example forest which is shown in picture 1. Following items are needed for the setup:
 * 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 Shears
 * 1 "Leaf Cutter" Robot
 * some Dirt and Ladders (amount dependent on the tree height)

Step 1: Define Workzone
In the first step the player must delimit the area in which the robot should cut the leaves. This is done by Land Marks. The player must place three Land Marks in a 90° angel which define the base of the forest (shown in picture 2). The two mark on the left and right in the picture, may thereby not be more than 64 blocks away from the center mark. Now the player must build for example a dirt tower over the mark in the center till the the height where the last leaves 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 board appears, then the Land Marks don't stand in a 90° angel to each other.

Note: To cut all leaves of the trees, the "Leaf Cutter" Robot needs a 3-dimensional zone which includes all leaves. If the player uses the 2-dimensional zone, which was defined with the three ground marks, the robot cuts only the leaves on the ground.

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 connected Wooden Transport Pipe, as well as a Docking Station and a Emerald AND Gate which can be placed anywhere on the gate (whitout 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: Programming
The thirt step is the programming of the Emerald Gate to control the robot. Also here, this example isn't the only system that works and can be extended.

At first the player must open the GUI of the Emerald Gate with a right-click, which shows two configurable blocks (one left, one right). A full explanation of all functions can be found on the article of the Emerald Gate. Now only the important cofigurations to control the robot, which are shown in picture 5 and are explained below:


 * 1) If a redstone signal receives the gate >>> Work in the work zone / coordinates of the zone (at the beginning a question mark)
 * 2) If a redstone signal receives the gate >>> Provide Items / Shears (at the beginning a empty)
 * 3) If no redstone signal receives the gate >>> Go to station / coordinates of the station (at the beginning a question mark)
 * 4) empty

Note: The sequence of rows has no meaning, but only what is in each row ! For example the empty can also be the first row.

Select all option like in picture 5. In the first and third row on the right side appears a question mark if the option befor are selected. That means, that something must be put in this slots. The option previously required/desired coordinates which must be added by the Map Location. Now the configuration should like in picture 5 and the control station is programmed.
 * 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. The Map Location should remain stored, and can be reused for the secound coordinates.
 * 2) Take the and right-click on the Docking Station to receive the coordinates and put the map in the GUI of the Emerald Gate in the question slot in the third row.
 * 3) At least put a shear in one of the empty slots in the second row on the right side

Step 4: Start and Stop
In the fourth and last step the "Leaf Cutter" 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 second row commands the robot to stay on the station. If now the Lever in front of the gate is switched and a redstone signal receives the gate, the first and the fourth row is active. After a short time (the update time of the robot), the robot will take a shear 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) till there are no leaves in the zone more.

Recharging
If the robot is low on energy, then the player can destroy the robot with a bunch (or more if the robot has more energy) and charging it in the Charging Table. After that, the robot can be placed again on the Docking Station and start.