Processing sketch - Demo code to show pressing keys from simulated serial input

Keybot.pde

// Demo code to show pressing keys from simulated serial input
//
// Click in the window to send some simulated serial data.
// Press the keys on the keyboard to see the output is the same.

import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent;
 
Robot robot;

 
void setup() {
  size(400, 400);
 
  // Add this to setup
  try { 
    robot = new Robot();
  } catch (AWTException e) {
    e.printStackTrace();
    exit();
  }
  
}
 
void draw() {}
 
void mousePressed() {
  //Press the space key
  // robot.keyPress(KeyEvent.VK_SPACE);
  //If we want a delay here, that gets a little bit more complicated...
  //robot.keyRelease(KeyEvent.VK_SPACE);
  
  
  // Demo
  println("Sending B");
  handleSerialChar('B');
  println("");
  
  println("Sending L");
  handleSerialChar('L');
  println("");
  
  println("Sending R");
  handleSerialChar('R');
  println("");
 
  
}
 
void keyPressed() {
  //Detect space key presses (to show that it works)
  if(keyCode == ' ') {
    print("Space! - ");
  } else if (keyCode == KeyEvent.VK_LEFT) {
    print("left - ");
  } else if (keyCode == KeyEvent.VK_RIGHT) {
    print("right - ");
  }
  
  println(keyCode);
}



// Call this with the char from serial readChar
void handleSerialChar(char c) {
  if (c == 'B') {
    pressShoot();
  } else if (c == 'L') {
    pressLeft();
  } else if (c == 'R') {
    pressRight();
  }
}

void pressLeft() {
  robot.keyPress(KeyEvent.VK_LEFT);
  robot.keyRelease(KeyEvent.VK_LEFT);
}

void pressRight() {
  robot.keyPress(KeyEvent.VK_RIGHT);
  robot.keyRelease(KeyEvent.VK_RIGHT);
}

void pressShoot() {
  robot.keyPress(KeyEvent.VK_SPACE);
  robot.keyRelease(KeyEvent.VK_SPACE);
}