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@@ -0,0 +1,175 @@
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+package control.joystick;
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+
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+import java.awt.event.KeyEvent;
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+import java.awt.event.KeyListener;
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+import java.util.ArrayList;
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+import java.util.HashSet;
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+import java.util.List;
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+import java.util.Set;
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+
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+import main.Window;
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+
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+import com.pi4j.io.gpio.GpioController;
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+import com.pi4j.io.gpio.GpioFactory;
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+import com.pi4j.io.gpio.GpioPinDigitalInput;
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+import com.pi4j.io.gpio.PinState;
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+import com.pi4j.io.gpio.RaspiPin;
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+import com.pi4j.io.gpio.event.GpioPinDigitalStateChangeEvent;
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+import com.pi4j.io.gpio.event.GpioPinListenerDigital;
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+
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+import control.joystick.Joystick.Position;
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+
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+public class JoystickHandler implements KeyListener{
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+
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+ List<JoystickListener> listeners;
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+ Set<Integer> keys;
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+ Joystick j;
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+
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+ public JoystickHandler()
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+ {
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+ listeners = new ArrayList<JoystickListener>();
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+ keys = new HashSet<Integer>();
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+ j = new Joystick();
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+ if(Window.ON_RASP)
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+ addGpioListeners();
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+ }
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+
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+ private void addGpioListeners(){
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+ ArrayList<GpioPinDigitalInput> inputpins = new ArrayList<GpioPinDigitalInput>();
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+ final GpioController gpio = GpioFactory.getInstance();
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+
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+ inputpins.add(gpio.provisionDigitalInputPin(RaspiPin.GPIO_04, "UP")); //button 1 to 6 + start button
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+ inputpins.add(gpio.provisionDigitalInputPin(RaspiPin.GPIO_05, "LEFT"));
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+ inputpins.add(gpio.provisionDigitalInputPin(RaspiPin.GPIO_11, "RIGHT"));
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+ inputpins.add(gpio.provisionDigitalInputPin(RaspiPin.GPIO_10, "DOWN"));
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+
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+
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+ for(GpioPinDigitalInput p:inputpins){
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+ p.addListener(new GpioPinListenerDigital() {
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+ @Override
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+ public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent e) {
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+ if(e.getState() == PinState.HIGH){
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+ keyReleased(new KeyEvent(
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+ new java.awt.Component(){},
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+ KeyEvent.KEY_RELEASED,
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+ System.nanoTime(),
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+ 0,
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+ stringToKeyevent(e.getPin().getName()),
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+ KeyEvent.CHAR_UNDEFINED)
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+ );
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+ System.out.println(e.getPin().getName() + " Released");
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+ }else{
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+ keyPressed(new KeyEvent(
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+ new java.awt.Component(){},
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+ KeyEvent.KEY_PRESSED,
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+ System.nanoTime(),
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+ 0,
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+ stringToKeyevent(e.getPin().getName()),
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+ KeyEvent.CHAR_UNDEFINED)
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+ );
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+ System.out.println(e.getPin().getName() + " Pressed");
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+ }
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+ }
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+ });
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+ }
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+ }
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+
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+ public void addJoystickListener(JoystickListener toAdd) {
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+ listeners.add(toAdd);
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+ }
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+
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+ public void onJoystickMoved(Joystick j) {
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+ JoystickEvent e = new JoystickEvent(j, System.currentTimeMillis());
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+ for (JoystickListener yst : listeners)
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+ yst.onJoystickMoved(e);
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+ }
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+
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+ private void updateJoystickPosition()
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+ {
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+ if(keys.contains(KeyEvent.VK_UP) && keys.contains(KeyEvent.VK_RIGHT))
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+ {
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+ j.setPosition(Position.UP_RIGHT);
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+ }
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+ else if(keys.contains(KeyEvent.VK_UP) && keys.contains(KeyEvent.VK_LEFT))
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+ {
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+ j.setPosition(Position.UP_LEFT);
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+ }
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+ else if(keys.contains(KeyEvent.VK_DOWN) && keys.contains(KeyEvent.VK_RIGHT))
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+ {
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+ j.setPosition(Position.DOWN_RIGHT);
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+ }
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+ else if(keys.contains(KeyEvent.VK_DOWN) && keys.contains(KeyEvent.VK_LEFT))
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+ {
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+ j.setPosition(Position.DOWN_LEFT);
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+ }
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+
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+ else if(keys.contains(KeyEvent.VK_UP))
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+ {
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+ j.setPosition(Position.UP);
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+ }
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+ else if(keys.contains(KeyEvent.VK_LEFT))
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+ {
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+ j.setPosition(Position.LEFT);
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+ }
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+ else if(keys.contains(KeyEvent.VK_RIGHT))
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+ {
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+ j.setPosition(Position.RIGHT);
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+ }
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+ else if(keys.contains(KeyEvent.VK_DOWN))
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+ {
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+ j.setPosition(Position.DOWN);
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+ }
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+
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+ else
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+ {
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+ j.setPosition(Position.CENTER);
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+ }
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+ }
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+
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+ private int stringToKeyevent(String s){
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+ switch(s){
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+ case "UP":
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+ return KeyEvent.VK_UP;
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+ case "DOWN":
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+ return KeyEvent.VK_DOWN;
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+ case "LEFT":
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+ return KeyEvent.VK_LEFT;
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+ case "RIGHT":
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+ return KeyEvent.VK_RIGHT;
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+ }
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+ return -1;
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+ }
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+
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+ @Override
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+ public void keyPressed(KeyEvent e) {
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+ if(e.getKeyCode() == KeyEvent.VK_UP || e.getKeyCode() == KeyEvent.VK_DOWN || e.getKeyCode() == KeyEvent.VK_LEFT || e.getKeyCode() == KeyEvent.VK_RIGHT)
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+ {
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+ Set<Integer> keysCopy = new HashSet<Integer>(keys);
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+ keys.add(e.getKeyCode());
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+ updateJoystickPosition();
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+
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+ if(!keys.equals(keysCopy))
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+ {
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+ onJoystickMoved(j);
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+ }
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+ }
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+ }
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+
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+ @Override
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+ public void keyReleased(KeyEvent e) {
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+ if(e.getKeyCode() == KeyEvent.VK_UP || e.getKeyCode() == KeyEvent.VK_DOWN || e.getKeyCode() == KeyEvent.VK_LEFT || e.getKeyCode() == KeyEvent.VK_RIGHT)
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+ {
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+ Set<Integer> keysCopy = new HashSet<Integer>(keys);
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+
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+ keys.remove(e.getKeyCode());
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+ updateJoystickPosition();
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+
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+ if(!keys.equals(keysCopy))
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+ {
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+ onJoystickMoved(j);
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+ }
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+ }
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+ }
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+
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+ public void keyTyped(KeyEvent e) {}
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+}
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