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Sealed Commands in FF Auto
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// inspired by https://github.com/JDroids/FreightFrenzy/blob/master/TeamCode/src/main/java/org/firstinspires/ftc/teamcode/opmode/CyclingWarehouseSideAuto.java | |
fun clock() = 0.0 | |
typealias TrajectorySequence = String | |
interface MecanumDrive { | |
fun followTrajectorySequenceAsync(ts: TrajectorySequence) | |
fun update() | |
fun isBusy(): Boolean | |
} | |
interface Deposit { | |
fun goToLevel1() | |
fun goToHeight(x: Double) | |
fun deploy() | |
fun retract() | |
} | |
interface Intake { | |
fun intake() | |
fun outtake() | |
fun setPower(x: Double) | |
fun stop() | |
} | |
sealed interface Command | |
class DeadlineCommand(val ts: Double) : Command | |
class SleepCommand(val dt: Double) : Command | |
class InstantCommand(val f: () -> Unit) : Command | |
class ParallelCommand(val cs: List<Command>) : Command { | |
constructor(vararg cs: Command) : this(cs.asList()) | |
} | |
class SequentialCommand(val cs: List<Command>) : Command { | |
constructor(vararg cs: Command) : this(cs.asList()) | |
} | |
class WaitUntilIdle(val drive: MecanumDrive) : Command | |
class FollowTrajectorySequence(val drive: MecanumDrive, val ts: TrajectorySequence) : Command | |
fun run(c: Command): Command? = | |
when (c) { | |
is DeadlineCommand -> | |
if (clock() >= c.ts) { | |
null | |
} else { | |
c | |
} | |
is SleepCommand -> | |
run(DeadlineCommand(clock() + c.dt)) | |
is InstantCommand -> { | |
c.f() | |
null | |
} | |
is ParallelCommand -> | |
c.cs.mapNotNull { run(it) }.let { cs -> | |
if (cs.isEmpty()) { | |
null | |
} else { | |
ParallelCommand(cs) | |
} | |
} | |
is SequentialCommand -> | |
if (run(c.cs.first()) == null) { | |
if (c.cs.size == 1) { | |
null | |
} else { | |
SequentialCommand(c.cs.drop(1)) | |
} | |
} else { | |
c | |
} | |
is WaitUntilIdle -> { | |
c.drive.update() | |
if (c.drive.isBusy()) { | |
c | |
} else { | |
null | |
} | |
} | |
is FollowTrajectorySequence -> { | |
c.drive.followTrajectorySequenceAsync(c.ts) | |
run(WaitUntilIdle(c.drive)) | |
} | |
} | |
tailrec fun runBlocking(c: Command) { | |
if (Thread.currentThread().isInterrupted) { | |
return | |
} | |
runBlocking(run(c) ?: return) | |
} | |
enum class Randomization { | |
LEVEL_1, LEVEL_2, LEVEL_3 | |
} | |
class OpMode(val drive: MecanumDrive, val deposit: Deposit, val intake: Intake) { | |
fun waitForStart() {} | |
fun cycleCommand(intakeCycle: TrajectorySequence, toShippingHub: TrajectorySequence) = | |
SequentialCommand( | |
ParallelCommand( | |
FollowTrajectorySequence(drive, intakeCycle), | |
SequentialCommand( | |
InstantCommand(deposit::retract), | |
ParallelCommand( | |
SleepCommand(1.0), | |
InstantCommand(intake::intake) | |
) | |
) | |
), | |
SleepCommand(1.0), | |
InstantCommand { intake.setPower(0.2) }, | |
ParallelCommand( | |
FollowTrajectorySequence(drive, toShippingHub), | |
SequentialCommand( | |
InstantCommand { deposit.goToHeight(24.5) }, | |
ParallelCommand( | |
SleepCommand(1.0), | |
InstantCommand(intake::outtake) | |
) | |
) | |
), | |
InstantCommand(intake::stop), | |
InstantCommand(deposit::deploy), | |
SleepCommand(1.2) | |
) | |
fun runOpMode() { | |
val r = Randomization.LEVEL_1 | |
waitForStart() | |
runBlocking(SequentialCommand( | |
ParallelCommand( | |
FollowTrajectorySequence( | |
drive, | |
when (r) { | |
Randomization.LEVEL_1 -> "toShippingHubLevel1" | |
Randomization.LEVEL_2 -> "toShippingHubLevel2" | |
Randomization.LEVEL_3 -> "toShippingHubLevel3" | |
} | |
), | |
InstantCommand { | |
when (r) { | |
Randomization.LEVEL_1 -> deposit.goToLevel1() | |
Randomization.LEVEL_2 -> deposit.goToHeight(14.0) | |
Randomization.LEVEL_3 -> deposit.goToHeight(24.5) | |
} | |
} | |
), | |
ParallelCommand( | |
InstantCommand(deposit::deploy), | |
SleepCommand(1.0) | |
), | |
cycleCommand("intakeCycle1", "toShippingHubForCycling1"), | |
ParallelCommand( | |
FollowTrajectorySequence(drive, "parkFromFirstCycle"), | |
InstantCommand(deposit::retract) | |
) | |
)) | |
} | |
} |
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