Sensor properties

What sensor asks for, and what setprop can write back. The game does not always answer: a block type, a building, a unit and an item are handled by different code, and the table shows which (v160.4).

Property	Read from	Written to	Description
@totalItems	buildingunit		How many items there are inside in all. For a unit this is its one and only stack.
@firstItem	buildingunit answered differently by 9 blocks Conveyor, Titanium Conveyor, Armored Conveyor, Mechanical Drill, Pneumatic Drill, Laser Drill, Airblast Drill, Impact Drill, Eruption Drill		The first item of the contents — the type, not the amount. For a drill it is what it mines.
@totalLiquids	building answered differently by 37 blocks Graphite Press, Multi-Press, Silicon Smelter, Silicon Crucible, Kiln, Plastanium Compressor, Phase Weaver, Surge Smelter, Cryofluid Mixer, Pyratite Mixer, Blast Mixer, Melter, Spore Press, Pulverizer, Coal Centrifuge, Silicon Arc Furnace, Electrolyzer, Atmospheric Concentrator, Oxidation Chamber, Electric Heater, Slag Heater, Phase Heater, Carbide Crucible, Slag Centrifuge, Surge Crucible, Cyanogen Synthesizer, Phase Synthesizer, Heat Reactor, Mechanical Pump, Rotary Pump, Impulse Pump, Reinforced Pump, Water Extractor, Cultivator, Oil Extractor, Vent Condenser, Heat Source		How much liquid there is inside in all. For a factory only the one it produces, for a pump only the one it pumps.
@totalPower	building	building	The charge of the buffer, and for an ordinary consumer the share of its request that is met.
@itemCapacity	block typebuildingunit typeunit answered differently by 24 blocks Core: Shard, Core: Foundation, Core: Nucleus, Core: Bastion, Core: Citadel, Core: Acropolis, Container, Vault, Reinforced Container, Reinforced Vault, Ground Factory, Air Factory, Naval Factory, Additive Reconstructor, Multiplicative Reconstructor, Exponential Reconstructor, Tetrative Reconstructor, Tank Fabricator, Ship Fabricator, Mech Fabricator, Tank Refabricator, Ship Refabricator, Mech Refabricator, Prime Refabricator		Capacity in items.
@liquidCapacity	block typebuilding		Capacity in liquid.
@powerCapacity	block typebuilding		How much power the block requests or holds.
@powerNetStored	building		Stored in the whole power network.
@powerNetCapacity	building		The capacity of all the network’s batteries.
@powerNetIn	building		The network’s production per second.
@powerNetOut	building		The network’s consumption per second.
@ammo	building · 26 only on 26 blocks Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign		The ammo in a turret.
@ammoCapacity	building · 26 only on 26 blocks Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign		How much ammo a turret holds.
@currentAmmoType	building · 20 only on 20 blocks Duo, Scatter, Scorch, Hail, Wave, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Breach, Diffuse, Sublimate, Titan, Disperse, Scathe, Smite		Which item the turret is loaded with right now.
@memoryCapacity	building · 3 only on 3 blocks Memory Cell, Memory Bank, World Cell		The size of a memory cell.
@health	block typebuildingunit typeunitbullet	buildingunitbullet	Current health.
@maxHealth	block typebuildingunit typeunitbullet		Full health.
@heat	building · 25 only on 25 blocks Atmospheric Concentrator, Oxidation Chamber, Electric Heater, Slag Heater, Phase Heater, Heat Redirector, Small Heat Redirector, Heat Router, Carbide Crucible, Surge Crucible, Cyanogen Synthesizer, Phase Synthesizer, Heat Reactor, Force Projector, Shockwave Tower, Thorium Reactor, Impact Reactor, Flux Reactor, Neoplasia Reactor, Lancer, Arc, Meltdown, Afflict, Malign, Heat Source		Heat: for a reactor and a heater the heat itself, for a shield projector the damage taken.
@shield	unitbuilding · 1 answered differently by 1 block Force Projector	unit Force Projector	Shield: for a unit its own, for a force projector how much of the dome is left.
@armor	block typebuildingunit typeunit	unit	Armor: subtracted from every hit.
@efficiency	building answered differently by 6 blocks Mechanical Pump, Rotary Pump, Impulse Pump, Reinforced Pump, Water Extractor, Oil Extractor		How well the block is supplied with resources and power: 1 is fully.
@progress	building · 114 only on 114 blocks build1, build2, build3, build4, build5, build6, build7, build8, build9, build10, build11, build12, build13, build14, build15, build16, Graphite Press, Multi-Press, Silicon Smelter, Silicon Crucible, Kiln, Plastanium Compressor, Phase Weaver, Surge Smelter, Cryofluid Mixer, Pyratite Mixer, Blast Mixer, Melter, Separator, Disassembler, Spore Press, Pulverizer, Coal Centrifuge, Silicon Arc Furnace, Electrolyzer, Atmospheric Concentrator, Oxidation Chamber, Electric Heater, Slag Heater, Phase Heater, Carbide Crucible, Slag Centrifuge, Surge Crucible, Cyanogen Synthesizer, Phase Synthesizer, Heat Reactor, Mender, Mend Projector, Shockwave Tower, Conveyor, Titanium Conveyor, Armored Conveyor, Mass Driver, Duct, Armored Duct, Mechanical Drill, Pneumatic Drill, Laser Drill, Airblast Drill, Cultivator, Vent Condenser, Impact Drill, Eruption Drill, Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign, Ground Factory, Air Factory, Naval Factory, Additive Reconstructor, Multiplicative Reconstructor, Exponential Reconstructor, Tetrative Reconstructor, Tank Fabricator, Ship Fabricator, Mech Fabricator, Tank Refabricator, Ship Refabricator, Mech Refabricator, Prime Refabricator, Tank Assembler, Ship Assembler, Mech Assembler, Payload Mass Driver, Large Payload Mass Driver, Deconstructor, Large Deconstructor, Large Constructor, Heat Source, Launch Pad [lightgray](Legacy), Launch Pad		The progress of the current job, from 0 to 1.
@timescale	building		The block’s speed-up from an overdrive, normally 1.
@rotation	buildingunitbullet answered differently by 26 blocks Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign	unitbullet	Rotation in degrees. For a turret, where the barrel is pointing.
@x	buildingunitbullet	unitbullet	The horizontal coordinate, in tiles.
@y	buildingunitbullet	unitbullet	The vertical coordinate, in tiles.
@velocityX	unitbullet	unitbullet	Horizontal speed, tiles per second.
@velocityY	unitbullet	unitbullet	Vertical speed, tiles per second.
@shootX	unitbulletbuilding · 26 answered differently by 26 blocks Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign		Where it is aiming: the horizontal coordinate.
@shootY	unitbulletbuilding · 26 answered differently by 26 blocks Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign		Where it is aiming: the vertical coordinate.
@cameraX	buildingunit		Where the player’s camera is, horizontally. Only for a player, otherwise 0.
@cameraY	buildingunit		Where the player’s camera is, vertically. Only for a player, otherwise 0.
@cameraWidth	buildingunit		The width of the area the player sees, in tiles.
@cameraHeight	buildingunit		The height of the area the player sees, in tiles.
@displayWidth	building · 5 only on 5 blocks Logic Display, Large Logic Display, Tiled Logic Display, Canvas, Large Canvas		The width of a display in points.
@displayHeight	building · 5 only on 5 blocks Logic Display, Large Logic Display, Tiled Logic Display, Canvas, Large Canvas		The height of a display in points.
@bufferSize	building · 6 only on 6 blocks Message, Logic Display, Large Logic Display, Tiled Logic Display, Reinforced Message, World Message		How many draw commands the display buffer has accumulated already.
@operations	building · 3 only on 3 blocks Logic Display, Large Logic Display, Tiled Logic Display		How many instructions the processor runs per tick.
@size	block typebuildingunit typeunitbullet		Size: for a block the side in tiles, for a unit the size of its hitbox.
@solid	block typebuilding		Whether the block can be walked through: 1 means no.
@dead	buildingunitbullet		1 if the object is gone.
@range	buildingunit typeunitbullet		Range in tiles: for a turret its fire, for a unit its weapon.
@shooting	unitbuilding · 26 answered differently by 26 blocks Duo, Scatter, Scorch, Hail, Wave, Lancer, Arc, Swarmer, Salvo, Tsunami, Fuse, Ripple, Cyclone, Foreshadow, Spectre, Meltdown, Breach, Diffuse, Sublimate, Titan, Disperse, Afflict, Lustre, Scathe, Smite, Malign		1 while it is firing.
@boosting	unit		1 if the mech is flying right now.
@mineX	unit		The tile the unit is mining, horizontally. Not mining — −1.
@mineY	unit		The tile the unit is mining, vertically. Not mining — −1.
@mining	unit		1 while the unit is mining.
@buildX	unitbuilding · 1 answered differently by 1 block Build Tower		The tile the unit is building, horizontally. Not building — −1.
@buildY	unitbuilding · 1 answered differently by 1 block Build Tower		The tile the unit is building, vertically. Not building — −1.
@pingX	unit		Where the player put a ping, horizontally. No ping — null.
@pingY	unit		Where the player put a ping, vertically. No ping — null.
@pingText	unit		The label of the player’s ping.
@building	unitbuilding · 17 answered differently by 17 blocks build1, build2, build3, build4, build5, build6, build7, build8, build9, build10, build11, build12, build13, build14, build15, build16, Build Tower		The building the unit is putting up right now.
@breaking	unitbuilding · 17 answered differently by 17 blocks build1, build2, build3, build4, build5, build6, build7, build8, build9, build10, build11, build12, build13, build14, build15, build16, Build Tower		1 if the unit is not building but tearing down.
@speed	unit typeunitbullet	unitbullet	Speed, tiles per second, including boosts.
@team	buildingunitbullet	buildingunitbullet	The team number.
@type	buildingunit		What it is: a block type or a unit type. Not a string but an object — compare it with @router.
@flag	unit	unit	The unit’s flag: any number written to it through ucontrol flag.
@flying	unit typeunit		1 if the unit is in the air right now.
@controlled	buildingunit		By what kind of thing it is controlled: 0 is nobody, the other codes are below. Which processor it does not say: your own and somebody else’s share one code.
@controller	unit		The processor driving the unit. If it is not a processor driving it, it gives back the unit itself, so a player at the wheel cannot be told from the unit’s own AI.
@name	block typeunit typeunititemliquidteam		The name: for content its logic identifier, for a unit the name of the player controlling it.
@payloadCount	buildingunit		How much payload it is carrying.
@payloadType	buildingunit	unit	What exactly it is carrying: a unit type or a block.
@totalPayload	unit		The payload volume taken up, in tiles.
@payloadCapacity	unit typeunit		How much payload it holds, in tiles.
@maxUnits	building · 6 only on 6 blocks Core: Shard, Core: Foundation, Core: Nucleus, Core: Bastion, Core: Citadel, Core: Acropolis		The team’s unit limit.
@id	block typeunit typeitemliquidteam		The content’s number in the game’s list.
@selectedBlock	unit		Which block the player has selected in the build panel.
@selectedRotation	unit		Which rotation the player has selected in the build panel.
@bulletLifetime	bullet	bullet	How much flying the bullet has left, in ticks.
@bulletTime	bullet	bullet	How long the bullet has been flying, in ticks.
@enabled	building answered differently by 3 blocks Door, Large Door, Blast Door		Whether the block is switched on.
@shoot			Firing at a point.
@shootp			Firing at a target with lead.
@config	building answered differently by 14 blocks Ground Factory, Air Factory, Naval Factory, Additive Reconstructor, Multiplicative Reconstructor, Exponential Reconstructor, Tetrative Reconstructor, Tank Fabricator, Ship Fabricator, Mech Fabricator, Tank Refabricator, Ship Refabricator, Mech Refabricator, Prime Refabricator		The block’s setting: a sorter’s item, a liquid, a node’s link point.
@color	block typebuildingunititemliquidteambullet answered differently by 1 block Illuminator		Colour: for content its own, for a building and a unit the team colour. Packed into a number, taken apart with unpackcolor.

@controlled codes

• 1 — @ctrlProcessor
• 2 — @ctrlPlayer
• 3 — @ctrlCommand

Data taken from Mindustry v160.4 by the project generators.