Changing "keyPressed" to Arduino buttons

anon98404100 · April 8, 2019, 4:45pm

After getting some help here to randomize my work more, I am currently trying to add 1 small addition which is required for my school project : usage of Arduino, however, the addition can be as small or as major as I like it to be.

ArrayList<TekenLine> lineList = new ArrayList();

TekenLine drawing;

String[] buttonLog;
String [] buttonLog2;
char[] letters;
int charIndex;
int minAngle=19999, maxAngle=-1000; 
float offset=0;
int sceneCounter = 0;
boolean shooterIsGekozen = false;
boolean mmoIsGekozen = false;


void setup() {
  size(600, 800);

  if (sceneCounter == 0) {
    background(255);
    fill(0, 0, 0);
    textSize(20);
    text("Kies je genre", 100, 100);
    text("W = shooters", 100, 200);
    text("S = MMOs", 100, 300);

  }

  
  drawing = new TekenLine(int(random(20, width-30)), int(random(20, height-30)), 0);
}

void draw() {  
    
  if (sceneCounter == 1 ) {

    background(255);
  
    for (char c1 : letters) {
      int intValue = int (c1); 
      if (intValue<minAngle) {
        minAngle=intValue;
      }
      if (intValue>maxAngle) {
        maxAngle=intValue;
      }
    }

    int intValue = int (letters[charIndex]); 

    float angle = map(intValue, 
      minAngle-10, maxAngle+10, 
      0, 360); 
    println(angle);

    float r = 8; // speed  
    float x =  r * cos(radians(angle+offset));
    float y =  r * sin(radians(angle+offset));


    //shooters - rood palet
    if (shooterIsGekozen) {
      switch(letters[charIndex]) {
      case 'a': 
        drawing.kleur=#DC1414;
        break;
      case 'w': 
        drawing.kleur=#FF0000;
        break;
      case 's': 
        drawing.kleur=#B22222;
        break;
      case 'd': 
        drawing.kleur=#F64D4D;
        break;
      case 'f': 
        drawing.kleur=#FFFFFF;
      }
    }

    //MMORPGs - oranje/geel palet
    if (mmoIsGekozen) {
      switch(letters[charIndex]) {
      case 'a': 
        drawing.kleur=#FFD700;
        break;
      case 'w': 
        drawing.kleur=#FF8C00;
        break;
      case 's': 
        drawing.kleur=#FF6600;
        break;
      case 'd': 
        drawing.kleur=#FFAE50;
        break;
      case '1': 
        drawing.kleur=#FFA500;
      }
    }
    
    charIndex = (charIndex + 1) % letters.length;
    offset+=random(0.4, 1.3);

    drawing.setSnelheid(x, y); 
    drawing.moveLine();
    drawing.bounceLine();
    lineList.add(drawing.copy());

    for (TekenLine tl : lineList) {
      tl.drawLine();
    }
  }
}


void keyPressed() {
    if (key == 'w') { 
      buttonLog = loadStrings("buttonLog.txt");
      letters = buttonLog[0].toCharArray();
      shooterIsGekozen = true;
      mmoIsGekozen = false;
      sceneCounter = sceneCounter + 1;
    }


    if (key == 's') {
      buttonLog2 = loadStrings("buttonLogMmo.txt");
      letters = buttonLog2[0].toCharArray();
      mmoIsGekozen = true;
      shooterIsGekozen = false;
      sceneCounter = sceneCounter + 1;
    }
  }

the class:

class TekenLine {
  float x;
  float y;

  float lineWidth;
  float lineHeight;

  float xSnelheid;
  float ySnelheid;
  
  color kleur;
  
  TekenLine(float tempX, float tempY, color tempKleur) {

    x = tempX;
    y = tempY;
    lineWidth = 10;
    lineHeight = 10;
    kleur = tempKleur;
  }

  void drawLine() {
    noStroke();
    fill(kleur);
    rect(x, y, lineWidth, lineHeight, 20);
  }

  void moveLine() {
    x += xSnelheid;
    y += ySnelheid;
  }
  
  TekenLine copy() {
   return new TekenLine(x, y, kleur); 
  }

  void bounceLine() {

    if (x >= width-20) {
      xSnelheid = -abs(xSnelheid);
    } else if (x <= 20) {
      xSnelheid = abs(xSnelheid);
    }

    if (y >= height-20) {
      ySnelheid = -abs(ySnelheid);
    } else if (y <= 20) {
      ySnelheid = abs(ySnelheid);
    }
  }
  void setSnelheid(float tempXSnelheid, float tempYSnelheid) {
    
    boolean xIsNeg=false; 
    boolean yIsNeg=false;
  
    if (xSnelheid<0)
      xIsNeg=true;
    if (ySnelheid<0)
      yIsNeg=true;

    xSnelheid=tempXSnelheid;
    ySnelheid=tempYSnelheid;

    if (xIsNeg) 
      xSnelheid*=-1;
    if (yIsNeg) 
      ySnelheid*=-1;
  }
}

Repeating myself, but: My code takes inputs from a .txt file and draws it out on-screen. With the help of user ‘Chrisir’, it got more randomized. My only issue left was how I could switch between 2 genres.

I have made a color palet for both the ‘Shooter’-genre and ‘MMO’-genre. I managed to write a function with keyPressed to read in 1 or the other. The choice can be made on a screen right when you boot the program (sceneCounter 0), the 2nd screen goes on on the choice you made. I let it get the characters first from the correct file I need, which is either the buttonLog for the shooters (TOP) or the one for the MMO input (BOTTOM). I only used to have the top code as my only piece of code, and switched the .txt file-name between the brackets to change, but that is of course not very smooth.

//buttonlog file for shooters
buttonLog = loadStrings("buttonLog.txt");
      letters = buttonLog[0].toCharArray();

//buttonlog file for MMOs
buttonLog2 = loadStrings("buttonLogMmo.txt");
letters = buttonLog2[0].toCharArray();

then let it choose the correct color palet with a Boolean check.

I want to convert this piece of code so that I can also use it with 2 arduino-buttons.

void keyPressed() {
    if (key == 'w') { 
      buttonLog = loadStrings("buttonLog.txt");
      letters = buttonLog[0].toCharArray();
      shooterIsGekozen = true;
      mmoIsGekozen = false;
      sceneCounter = sceneCounter + 1;
    }


    if (key == 's') {
      buttonLog2 = loadStrings("buttonLogMmo.txt");
      letters = buttonLog2[0].toCharArray();
      mmoIsGekozen = true;
      shooterIsGekozen = false;
      sceneCounter = sceneCounter + 1;
    }
  }

I already tried changing the

void keyPressed()

to

void anotherName() {
}

and put this in the setup();, but when putting it in the setup or even in the draw, it won’t register the keypresses anymore. even if i write

if (keyPressed == true) {
 if (key == ......................)
}

it still won’t seem to pick up on it.

How could I change that piece of code around so I can use both the keyboard shortcut AND/OR button to choose?

so basically :

void something();

if (key == 'something' || left arduino button) {
 obtain letters from text files and scenecounter + 1.
}

Many thanks!

zenemig · April 8, 2019, 5:03pm

For making an event with your Arduino buttons you can use the serialEvent() function.

https://processing.org/reference/libraries/serial/serialEvent_.html

See if that can help you.

anon98404100 · April 8, 2019, 6:53pm

Thanks for the reply, I forgot to menton the following yet :

We have used the “StandardFirmata” example and uploaded it to our arduino from that one arduino program (and we wont be using it anymore)
We also use the Arduino (firmata) plug-in and imported the Serial. So the top of my code now includes:

import processing.serial.*;
import cc.arduino.*;

Arduino arduino;

Does that still require the serialEvent() as you listed, or should I change my approach on that (Still a newbie with this)?

Also, I have been fooling around with it now. I noticed that when I am println-ing my 2 buttons, they do change their value from 0 to 1 in the draw(); but when I try it in the setup(); it doesn’t seem to change value. Anything I could do to get this working?

anon98404100 · April 8, 2019, 7:23pm

Alright so I managed fix it myself, made a stupid mistake with the whole setup(); thing.

I took my

if (sceneCounter == 0) {
    background(255);
    fill(0, 0, 0);
    textSize(20);
    text("Kies je genre", 100, 100);
    text("W = shooters", 100, 200);
    text("S = MMOs", 100, 300);

  }

that was in the setup, put it in the draw();

then changed the

void keyPressed() {
}

function to

void buttonEvent() {
   
  if (key == 'w' || arduino.digitalRead(7) == 1) {
      buttonLog = loadStrings("buttonLog.txt");
      letters = buttonLog[0].toCharArray();
      shooterIsGekozen = true;
      mmoIsGekozen = false;
      sceneCounter = sceneCounter + 1;
  } 
  
  if (key == 's' || arduino.digitalRead(8) == 1) {
      buttonLog2 = loadStrings("buttonLogMmo.txt");
      letters = buttonLog2[0].toCharArray();
      mmoIsGekozen = true;
      shooterIsGekozen = false;
      sceneCounter = sceneCounter + 1;
  }
 }

and added it to the sceneCounter 0 in the draw();

works fine now!

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Changing "keyPressed" to Arduino buttons

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