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/**
* Copyright (c) 2017 Luke Shumaker.
* Copyright (c) 2017 Thomas Griffith.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the FIRST nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY FIRST AND CONTRIBUTORS``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY NONINFRINGEMENT AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL FIRST OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.usfirst.frc.team4272.robot2017;
public class Autonomous {
private static interface Command {
public boolean execute(Control c);
}
private static class DriveDistance implements Command {
private static final double pctTaper = 1.0/3;
private static final double pctTolerance = 0.005;
private static final double pctThrottle = 0.2;
private static final double distFinished = 0.1;
private final HwRobot robot;
private final double lSpeed, lDistTarget;
private final double rSpeed, rDistTarget;
public DriveDistance(HwRobot robot,
double lSpeed, double lDistTarget,
double rSpeed, double rDistTarget) {
this.robot = robot;
this.lSpeed = lSpeed;
this.lDistTarget = lDistTarget;
this.rSpeed = rSpeed;
this.rDistTarget = rDistTarget;
}
public DriveDistance(HwRobot robot, double speed, double target) {
this(robot, speed, target, speed, target);
}
private boolean initialized = false;
public boolean execute(Control c) {
if (!initialized) {
robot.lDriveE.reset();
robot.rDriveE.reset();
initialized = true;
}
double lDistCurr = robot.lDriveE.getDistance();
double rDistCurr = robot.rDriveE.getDistance();
double lPct = lDistCurr/lDistTarget;
double rPct = rDistCurr/rDistTarget;
c.lDrive = Math.copySign(lSpeed, 1-lPct);
if (Math.abs(1-lPct) < pctTaper) {
c.lDrive *= Math.sqrt(Math.abs((1-lPct)/pctTaper));
}
c.rDrive = Math.copySign(rSpeed, 1-rPct);
if (Math.abs(1-rPct) < pctTaper) {
c.rDrive *= Math.sqrt(Math.abs((1-lPct)/pctTaper));
}
if (Math.abs(lPct - rPct) > pctTolerance) {
if (lPct > rPct) {
c.lDrive *= pctThrottle;
} else {
c.rDrive *= pctThrottle;
}
}
return Math.abs(lDistCurr - lDistTarget) < distFinished && Math.abs(rDistCurr - rDistTarget) < distFinished;
}
}
private static final double axleWidth = 2; // in feet
private static Command driveDistance(HwRobot robot, double speed, double dist) {
return new DriveDistance(robot, speed, dist);
}
private static Command turnRadians(HwRobot robot, double speed, double rad) {
return new DriveDistance(robot,
speed, Math.copySign(rad*axleWidth, rad),
speed, Math.copySign(rad*axleWidth, -rad));
}
private static Command turnDegrees(HwRobot robot, double speed, double deg) {
return turnRadians(robot, speed, deg * Math.PI/180);
}
private final HwRobot robot;
private final Command[] commands;
private int step = 0;
public Autonomous(HwRobot robot) {
this.robot = robot;
// Center peg
/*
commands = new Command[]{
driveDistance(robot, 0.3, 8.75),
};
*/
// Left peg
commands = new Command[]{
driveDistance(robot, 0.3, 3.5),
turnDegrees(robot, 0.3, 60),
driveDistance(robot, 0.3, 8.3),
};
}
public Control run(Control c) {
c.gedOut = false;
if (step < commands.length) {
if (commands[step].execute(c))
step++;
}
return c;
}
}
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