lokno
LittleBigPlanet 4-way XOR gate
This is a 4-way XOR gate I came up with for a quiz level in LBP. It takes four input switches (shown along the bottom of the diagram) and activates a magnetic key (marked with a dotted arrow) when only one of these switches is pressed. If more than one switch is depressed, it deactivates. This is necessary if you have posed a question and you only want the player to be able to select one answer. The gate uses 21 blocks, 4 triangles, 20 pistons, 16 keys, 5 sensors, 20 wires, and 4 buttons.
The green rectangles are magnetic keys and the green rectangles with a circle above them are magnetic sensors. The arrows represent pistons that extend in the indicated direction. The squares and triangles are blocks of material. The blocks with magnetic sensors on them should be made of dark matter, or otherwise fixed in space. The four input switches along the bottom are colored-coded to match the pistons they operate directly. Each of the four, inner, black arrows on the left are pistons controlled by a corresponding 3-way OR gate on the right (The connection between the magnetic sensor and piston is indicated by roman numerical. Notice that the input switch that operates the outer piston on an arm on the left does not operate a piston on the 3-way OR gate on the right that controls the inner piston on that arm. Also notice the green circles, which represent the range of the magnetic sensors at their centers
Let’s illustrate this with an example of how it works. If the button labeled A is depressed, then the red pistons will retract. This will activate the sensor on the left (which is the output of the gate) and II, III, and IV on the right. This will extend the pistons marked II, III, and IV so that the block between the pistons is outside the sensor range. Now, if any other button is pressed, OR Gate I on the right will activate, extending the last inner piston on left, deactivating the output sensor. Additionally, the retraction of any of the outer pistons will not move the magnetic keys on the outer blocks of the arms into the range of the sensor. Thus, only one switch must be pressed to activate the output switch.
LittleBigPlanet 4-way XOR gate
This is a 4-way XOR gate I came up with for a quiz level in LBP. It takes four input switches (shown along the bottom of the diagram) and activates a magnetic key (marked with a dotted arrow) when only one of these switches is pressed. If more than one switch is depressed, it deactivates. This is necessary if you have posed a question and you only want the player to be able to select one answer. The gate uses 21 blocks, 4 triangles, 20 pistons, 16 keys, 5 sensors, 20 wires, and 4 buttons.
The green rectangles are magnetic keys and the green rectangles with a circle above them are magnetic sensors. The arrows represent pistons that extend in the indicated direction. The squares and triangles are blocks of material. The blocks with magnetic sensors on them should be made of dark matter, or otherwise fixed in space. The four input switches along the bottom are colored-coded to match the pistons they operate directly. Each of the four, inner, black arrows on the left are pistons controlled by a corresponding 3-way OR gate on the right (The connection between the magnetic sensor and piston is indicated by roman numerical. Notice that the input switch that operates the outer piston on an arm on the left does not operate a piston on the 3-way OR gate on the right that controls the inner piston on that arm. Also notice the green circles, which represent the range of the magnetic sensors at their centers
Let’s illustrate this with an example of how it works. If the button labeled A is depressed, then the red pistons will retract. This will activate the sensor on the left (which is the output of the gate) and II, III, and IV on the right. This will extend the pistons marked II, III, and IV so that the block between the pistons is outside the sensor range. Now, if any other button is pressed, OR Gate I on the right will activate, extending the last inner piston on left, deactivating the output sensor. Additionally, the retraction of any of the outer pistons will not move the magnetic keys on the outer blocks of the arms into the range of the sensor. Thus, only one switch must be pressed to activate the output switch.