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allwpilib/wpilibcExamples/src/main/cpp/examples/PacGoat/include/Subsystems/Shooter.h

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C++

/*----------------------------------------------------------------------------*/
/* Copyright (c) 2017-2018 FIRST. All Rights Reserved. */
/* Open Source Software - may be modified and shared by FRC teams. The code */
/* must be accompanied by the FIRST BSD license file in the root directory of */
/* the project. */
/*----------------------------------------------------------------------------*/
#pragma once
#include <Commands/Subsystem.h>
#include <DigitalInput.h>
#include <DoubleSolenoid.h>
#include <Solenoid.h>
/**
* The Shooter subsystem handles shooting. The mechanism for shooting is
* slightly complicated because it has to pneumatic cylinders for shooting, and
* a third latch to allow the pressure to partially build up and reduce the
* effect of the airflow. For shorter shots, when full power isn't needed, only
* one cylinder fires.
*
* NOTE: Simulation currently approximates this as as single pneumatic cylinder
* and ignores the latch.
*/
class Shooter : public frc::Subsystem {
public:
Shooter();
void InitDefaultCommand() override;
/**
* Extend both solenoids to shoot.
*/
void ExtendBoth();
/**
* Retract both solenoids to prepare to shoot.
*/
void RetractBoth();
/**
* Extend solenoid 1 to shoot.
*/
void Extend1();
/**
* Retract solenoid 1 to prepare to shoot.
*/
void Retract1();
/**
* Extend solenoid 2 to shoot.
*/
void Extend2();
/**
* Retract solenoid 2 to prepare to shoot.
*/
void Retract2();
/**
* Turns off the piston1 double solenoid. This won't actuate anything
* because double solenoids preserve their state when turned off. This
* should be called in order to reduce the amount of time that the coils
* are
* powered.
*/
void Off1();
/**
* Turns off the piston1 double solenoid. This won't actuate anything
* because double solenoids preserve their state when turned off. This
* should be called in order to reduce the amount of time that the coils
* are
* powered.
*/
void Off2();
/**
* Release the latch so that we can shoot
*/
void Unlatch();
/**
* Latch so that pressure can build up and we aren't limited by air
* flow.
*/
void Latch();
/**
* Toggles the latch postions
*/
void ToggleLatchPosition();
/**
* @return Whether or not piston 1 is fully extended.
*/
bool Piston1IsExtended();
/**
* @return Whether or not piston 1 is fully retracted.
*/
bool Piston1IsRetracted();
/**
* Turns off all double solenoids. Double solenoids hold their position
* when
* they are turned off. We should turn them off whenever possible to
* extend
* the life of the coils
*/
void OffBoth();
/**
* @return Whether or not the goal is hot as read by the banner sensor
*/
bool GoalIsHot();
private:
// Devices
frc::DoubleSolenoid m_piston1{3, 4};
frc::DoubleSolenoid m_piston2{5, 6};
frc::Solenoid m_latchPiston{1, 2};
frc::DigitalInput m_piston1ReedSwitchFront{9};
frc::DigitalInput m_piston1ReedSwitchBack{11};
frc::DigitalInput m_hotGoalSensor{
7}; // NOTE: Currently ignored in simulation
};