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

wpilibc/src/main/native/include/Buttons/Button.h

@@ -0,0 +1,36 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/Trigger.h"
+#include "Commands/Command.h"
+
+namespace frc {
+
+/**
+ * This class provides an easy way to link commands to OI inputs.
+ *
+ * It is very easy to link a button to a command.  For instance, you could
+ * link the trigger button of a joystick to a "score" command.
+ *
+ * This class represents a subclass of Trigger that is specifically aimed at
+ * buttons on an operator interface as a common use case of the more generalized
+ * Trigger objects. This is a simple wrapper around Trigger with the method
+ * names
+ * renamed to fit the Button object use.
+ */
+class Button : public Trigger {
+ public:
+  virtual void WhenPressed(Command* command);
+  virtual void WhileHeld(Command* command);
+  virtual void WhenReleased(Command* command);
+  virtual void CancelWhenPressed(Command* command);
+  virtual void ToggleWhenPressed(Command* command);
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/ButtonScheduler.h

@@ -0,0 +1,28 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+namespace frc {
+
+class Trigger;
+class Command;
+
+class ButtonScheduler {
+ public:
+  ButtonScheduler(bool last, Trigger* button, Command* orders);
+  virtual ~ButtonScheduler() = default;
+  virtual void Execute() = 0;
+  void Start();
+
+ protected:
+  bool m_pressedLast;
+  Trigger* m_button;
+  Command* m_command;
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/CancelButtonScheduler.h

@@ -0,0 +1,27 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/ButtonScheduler.h"
+
+namespace frc {
+
+class Trigger;
+class Command;
+
+class CancelButtonScheduler : public ButtonScheduler {
+ public:
+  CancelButtonScheduler(bool last, Trigger* button, Command* orders);
+  virtual ~CancelButtonScheduler() = default;
+  virtual void Execute();
+
+ private:
+  bool pressedLast;
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/HeldButtonScheduler.h

@@ -0,0 +1,24 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/ButtonScheduler.h"
+
+namespace frc {
+
+class Trigger;
+class Command;
+
+class HeldButtonScheduler : public ButtonScheduler {
+ public:
+  HeldButtonScheduler(bool last, Trigger* button, Command* orders);
+  virtual ~HeldButtonScheduler() = default;
+  virtual void Execute();
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/InternalButton.h

@@ -0,0 +1,30 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/Button.h"
+
+namespace frc {
+
+class InternalButton : public Button {
+ public:
+  InternalButton() = default;
+  explicit InternalButton(bool inverted);
+  virtual ~InternalButton() = default;
+
+  void SetInverted(bool inverted);
+  void SetPressed(bool pressed);
+
+  virtual bool Get();
+
+ private:
+  bool m_pressed = false;
+  bool m_inverted = false;
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/JoystickButton.h

@@ -0,0 +1,27 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/Button.h"
+#include "GenericHID.h"
+
+namespace frc {
+
+class JoystickButton : public Button {
+ public:
+  JoystickButton(GenericHID* joystick, int buttonNumber);
+  virtual ~JoystickButton() = default;
+
+  virtual bool Get();
+
+ private:
+  GenericHID* m_joystick;
+  int m_buttonNumber;
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/NetworkButton.h

@@ -0,0 +1,30 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "Buttons/Button.h"
+
+namespace frc {
+
+class NetworkButton : public Button {
+ public:
+  NetworkButton(const std::string& tableName, const std::string& field);
+  NetworkButton(std::shared_ptr<ITable> table, const std::string& field);
+  virtual ~NetworkButton() = default;
+
+  virtual bool Get();
+
+ private:
+  std::shared_ptr<ITable> m_netTable;
+  std::string m_field;
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/PressedButtonScheduler.h

@@ -0,0 +1,24 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/ButtonScheduler.h"
+
+namespace frc {
+
+class Trigger;
+class Command;
+
+class PressedButtonScheduler : public ButtonScheduler {
+ public:
+  PressedButtonScheduler(bool last, Trigger* button, Command* orders);
+  virtual ~PressedButtonScheduler() = default;
+  virtual void Execute();
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/ReleasedButtonScheduler.h

@@ -0,0 +1,24 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/ButtonScheduler.h"
+
+namespace frc {
+
+class Trigger;
+class Command;
+
+class ReleasedButtonScheduler : public ButtonScheduler {
+ public:
+  ReleasedButtonScheduler(bool last, Trigger* button, Command* orders);
+  virtual ~ReleasedButtonScheduler() = default;
+  virtual void Execute();
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/ToggleButtonScheduler.h

@@ -0,0 +1,27 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "Buttons/ButtonScheduler.h"
+
+namespace frc {
+
+class Trigger;
+class Command;
+
+class ToggleButtonScheduler : public ButtonScheduler {
+ public:
+  ToggleButtonScheduler(bool last, Trigger* button, Command* orders);
+  virtual ~ToggleButtonScheduler() = default;
+  virtual void Execute();
+
+ private:
+  bool pressedLast;
+};
+
+}  // namespace frc

wpilibc/src/main/native/include/Buttons/Trigger.h

@@ -0,0 +1,54 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011-2017. 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "SmartDashboard/Sendable.h"
+
+namespace frc {
+
+class Command;
+
+/**
+ * This class provides an easy way to link commands to inputs.
+ *
+ * It is very easy to link a polled input to a command.  For instance, you could
+ * link the trigger button of a joystick to a "score" command or an encoder
+ * reaching
+ * a particular value.
+ *
+ * It is encouraged that teams write a subclass of Trigger if they want to have
+ * something unusual (for instance, if they want to react to the user holding
+ * a button while the robot is reading a certain sensor input).  For this, they
+ * only have to write the {@link Trigger#Get()} method to get the full
+ * functionality
+ * of the Trigger class.
+ */
+class Trigger : public Sendable {
+ public:
+  Trigger() = default;
+  virtual ~Trigger() = default;
+  bool Grab();
+  virtual bool Get() = 0;
+  void WhenActive(Command* command);
+  void WhileActive(Command* command);
+  void WhenInactive(Command* command);
+  void CancelWhenActive(Command* command);
+  void ToggleWhenActive(Command* command);
+
+  void InitTable(std::shared_ptr<ITable> subtable) override;
+  std::shared_ptr<ITable> GetTable() const override;
+  std::string GetSmartDashboardType() const override;
+
+ protected:
+  std::shared_ptr<ITable> m_table;
+};
+
+}  // namespace frc