Files
allwpilib/wpilibc/src/main/native/cpp/Commands/ConditionalCommand.cpp
Thad House e1195e8b9d Update to 2018_v4 image and new build system. (#598)
* Revert "Force OpenCV to 3.1.0 (#602)"

This reverts commit 50ed55e8e2.

* Removes Simulation

* Removes old build system

* Removes old gtest

* Adds new gmock and gtest

* Updates to new ni-libraries

* removes MyRobot (to be replaced)

* moves files to new location

* Adds new sim backend and new test executables

* updates .styleguide and .gitignore

* Changes cpp WPILibVersion to a function

MSVC throws an AV with the old version.

* Disables USBCamera on all systems except for linux

* 2018 NI Libraries

* New build system
2017-08-18 21:35:53 -07:00

96 lines
2.7 KiB
C++

/*----------------------------------------------------------------------------*/
/* Copyright (c) FIRST 2017. 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. */
/*----------------------------------------------------------------------------*/
#include "Commands/ConditionalCommand.h"
#include "Commands/Scheduler.h"
using namespace frc;
static void RequireAll(Command& command, Command* onTrue, Command* onFalse) {
if (onTrue != nullptr) {
for (auto requirement : onTrue->GetRequirements())
command.Requires(requirement);
}
if (onFalse != nullptr) {
for (auto requirement : onFalse->GetRequirements())
command.Requires(requirement);
}
}
/**
* Creates a new ConditionalCommand with given onTrue and onFalse Commands.
*
* @param onTrue The Command to execute if {@link
* ConditionalCommand#Condition()} returns true
* @param onFalse The Command to execute if {@link
* ConditionalCommand#Condition()} returns false
*/
ConditionalCommand::ConditionalCommand(Command* onTrue, Command* onFalse) {
m_onTrue = onTrue;
m_onFalse = onFalse;
RequireAll(*this, onTrue, onFalse);
}
/**
* Creates a new ConditionalCommand with given onTrue and onFalse Commands.
*
* @param name the name for this command group
* @param onTrue The Command to execute if {@link
* ConditionalCommand#Condition()} returns true
* @param onFalse The Command to execute if {@link
* ConditionalCommand#Condition()} returns false
*/
ConditionalCommand::ConditionalCommand(const std::string& name, Command* onTrue,
Command* onFalse)
: Command(name) {
m_onTrue = onTrue;
m_onFalse = onFalse;
RequireAll(*this, onTrue, onFalse);
}
void ConditionalCommand::_Initialize() {
if (Condition()) {
m_chosenCommand = m_onTrue;
} else {
m_chosenCommand = m_onFalse;
}
if (m_chosenCommand != nullptr) {
/*
* This is a hack to make cancelling the chosen command inside a
* CommandGroup work properly
*/
m_chosenCommand->ClearRequirements();
m_chosenCommand->Start();
}
}
void ConditionalCommand::_Cancel() {
if (m_chosenCommand != nullptr && m_chosenCommand->IsRunning()) {
m_chosenCommand->Cancel();
}
Command::_Cancel();
}
bool ConditionalCommand::IsFinished() {
return m_chosenCommand != nullptr && m_chosenCommand->IsRunning() &&
m_chosenCommand->IsFinished();
}
void ConditionalCommand::Interrupted() {
if (m_chosenCommand != nullptr && m_chosenCommand->IsRunning()) {
m_chosenCommand->Cancel();
}
Command::Interrupted();
}