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Using arrow keys to move to "players" around.

itgoesvnaaaitgoesvnaaa
edited May 2015 in Questions about Code

What I am trying to do is create the simplest form of a video game. I am trying to move mario left and right with the Z/X keys and Luigi with the Right/Left arrow keys. Would I use an if statement or rather do for example KeyCode?

So far my code looks like:

(mod: see comment)

Thank you so much. I have tried a few things and cannot seem to get it right.

Tagged:

Best Answer

Answers

  • TfGuy44TfGuy44

    You should start by editing your post and formatting your code for this forum properly. Hint: Select code and press Ctrl + o

  • itgoesvnaaaitgoesvnaaa 
    void setup() {
  size (600, 600);
  smooth();
}

void draw(){
  background(41, 194, 252);

   fill(54, 252, 41);
stroke(54, 252, 41); 
 rect(0,500, 600, 100);

 fill(254, 255, 36);
 stroke(245, 255, 36);
ellipse(475, 100, 120, 120);

mario(100, 425, 1.5);
luigiLeft(400, 425, 1.5);

} 

void mario(float x, float y, float s) { 
  pushMatrix();
  translate(x-s*.75*50, y-s*50);
  scale(s*100/16);
  strokeWeight(.1);
  stroke(159, 89, 39); // Light brown color 
  fill(159, 89, 39); // Light brown color 
  rect(2, 7, 6, 1);
  rect(1, 8, 10, 1);
  rect(0, 9, 12, 1);
  rect(2, 10, 1, 1);
  rect(9, 10, 1, 1);
  rect(1, 14, 3, 1);
  rect(8, 14, 3, 1);
  rect(0, 15, 4, 1);
  rect(8, 15, 4, 1);
  stroke(244, 164, 96); // Peach color 
  fill(244, 164, 96); // Peach color 
  rect(5, 2, 4, 1);  
  rect(2, 3, 9, 1);
  rect(2, 4, 10, 1);
  rect(3, 5, 4, 1);
  rect(3, 6, 7, 1);
  rect(0, 10, 2, 1);
  rect(10, 10, 2, 1);
  rect(0, 11, 3, 1);
  rect(9, 11, 3, 1);
  rect(0, 12, 2, 1);
  rect(10, 12, 2, 1);
  stroke(220, 0, 0); // Red color 
  fill(220, 0, 0); // Red color 
  rect(4, 7, 1, 1);
  rect(4, 8, 1, 1);
  rect(7, 8, 1, 1);
  rect(4, 9, 4, 1);
  rect(3, 10, 1, 1);
  rect(5, 10, 2, 1);
  rect(8, 10, 1, 1);
  rect(3, 11, 6, 1);
  rect(2, 12, 8, 1);
  rect(2, 13, 3, 1);
  rect(7, 13, 3, 1);
  stroke(139, 69, 19); // Dark brown color 
  fill(139, 69, 19); // Dark brown color 
  rect(2, 2, 3, 1);
  rect(7, 2, 1, 1);
  rect(1, 3, 1, 1);
  rect(3, 3, 1, 1);
  rect(7, 3, 1, 1);
  rect(1, 4, 1, 1);
  rect(3, 4, 2, 1);
  rect(8, 4, 1, 1);
  rect(1, 5, 2, 1);
  rect(7, 5, 4, 1);
  stroke(255, 215, 0); // Gold color 
  fill(255, 215, 0); // Gold color 
  rect(4, 10, 1, 1);
  rect(7, 10, 1, 1);
  stroke(220, 0, 0); // Red color 
  fill(220, 0, 0); // Red color 
  rect(3, 0, 5, 1);
  rect(2, 1, 9, 1);
  popMatrix();
}

void luigiLeft(float x, float y, float s) { 
  pushMatrix();
  translate(x+s*.75*50, y-s*50);
  scale(-s*100/16,s*100/16);
  strokeWeight(.1);
  stroke(46, 139, 87); // Green shirt
  fill(46, 139, 87); // Green shirt
  rect(2, 7, 6, 1);
  rect(1, 8, 10, 1);
  rect(0, 9, 12, 1);
  rect(2, 10, 1, 1);
  rect(9, 10, 1, 1);
  stroke(109, 49, 9); // Dark brown shoes
  fill(109, 49, 9); // Dark brown shoes
  rect(1, 14, 3, 1);
  rect(8, 14, 3, 1);
  rect(0, 15, 4, 1);
  rect(8, 15, 4, 1);
  stroke(244, 164, 96); // Peach color 
  fill(244, 164, 96); // Peach color 
  rect(5, 2, 4, 1);  
  rect(2, 3, 9, 1);
  rect(2, 4, 10, 1);
  rect(3, 5, 4, 1);
  rect(3, 6, 7, 1);
  rect(0, 10, 2, 1);
  rect(10, 10, 2, 1);
  rect(0, 11, 3, 1);
  rect(9, 11, 3, 1);
  rect(0, 12, 2, 1);
  rect(10, 12, 2, 1);
  stroke(45, 40, 240); // Blue overalls
  fill(45, 40, 240); // Blue overalls
  rect(4, 7, 1, 1);
  rect(4, 8, 1, 1);
  rect(7, 8, 1, 1);
  rect(4, 9, 4, 1);
  rect(3, 10, 1, 1);
  rect(5, 10, 2, 1);
  rect(8, 10, 1, 1);
  rect(3, 11, 6, 1);
  rect(2, 12, 8, 1);
  rect(2, 13, 3, 1);
  rect(7, 13, 3, 1);
  stroke(109, 49, 9); // Dark brown facial features
  fill(109, 49, 9); // Dark brown facial features
  rect(2, 2, 3, 1);
  rect(7, 2, 1, 1);
  rect(1, 3, 1, 1);
  rect(3, 3, 1, 1);
  rect(7, 3, 1, 1);
  rect(1, 4, 1, 1);
  rect(3, 4, 2, 1);
  rect(8, 4, 1, 1);
  rect(1, 5, 2, 1);
  rect(7, 5, 4, 1);
  stroke(255, 215, 0); // Gold color 
  fill(255, 215, 0); // Gold color 
  rect(4, 10, 1, 1);
  rect(7, 10, 1, 1);
  stroke(46, 139, 87); // Green hat
  fill(46, 139, 87); // Green hat
  rect(3, 0, 5, 1);
  rect(2, 1, 9, 1);
  popMatrix();
}
  • koogskoogs

    (duplicate thread removed)

  • itgoesvnaaaitgoesvnaaa

    thank you

  • TfGuy44TfGuy44 
    float marioX = 100;
float marioY = 425;
float greenMarioX = 400;
float greenMarioY = 425;


void setup() {
  size (600, 600);
  smooth();
}

void draw(){
  background(41, 194, 252);

   fill(54, 252, 41);
stroke(54, 252, 41); 
 rect(0,500, 600, 100);

 fill(254, 255, 36);
 stroke(245, 255, 36);
ellipse(475, 100, 120, 120);

mario(marioX,marioY, 1.5);
luigiLeft(greenMarioX,greenMarioY, 1.5);

} 

void keyPressed(){
  if(key == ' '){
    marioX++;
    greenMarioX--;
  }
}

// snip two more long methods
  • TfGuy44TfGuy44

    You can test for the left and right arrow keys using keyCode, compare it to LEFT and RIGHT. Normal keys are 'z' and 'x', of course.

  • itgoesvnaaaitgoesvnaaa

    I'll give this a try! Thank you!

  • TfGuy44TfGuy44

    Post your try at getting it working for more help if you need it!

  • itgoesvnaaaitgoesvnaaa 
    float marioX = 100;
float marioY = 425;
float luigiX = 400;
float luigiY = 425;

void setup() {
  size (600, 600);
  smooth();
}

void draw(){
  background(41, 194, 252);

   fill(54, 252, 41);
stroke(54, 252, 41); 
 rect(0,500, 600, 100);

 fill(254, 255, 36);
 stroke(245, 255, 36);
ellipse(475, 100, 120, 120);

mario(marioX, marioY, 1.5);
luigiLeft(luigiX, luigiY, 1.5);

} 

void keyPressed() {
    if (key == Z) {
    marioX++;

  }
 if (key == X) {
  marioX--;
}
if (keyPressed && (key == CODED)) {
  if (keyCode == LEFT) {
    luigiX--;
  }
  else if (keyCode == RIGHT) {
    luigiX++;
  }

}

    Okay so I did this, but I do not think it's correct.

  • TfGuy44TfGuy44
    Answer ✓

    When Processing sees X or Z, it think it's a variable, but it doesn't know about that variable, so you get an error.

    You need to compare it to the character 'z' or 'x'. A character is a single letter enclosed by single quotes.

    You might also try pressing Ctrl + t to format your code's indenting. If you had indented your code properly, you might have noticed you were missing a closing brace (}).

    Checking if keyPressed is true inside keyPressed() is a little redundant.

    Other than that, you're very close:

     void keyPressed() {
  if (key == 'z') {
    marioX++;
  } else if (key == 'x') {
    marioX--;
  }
  if (key == CODED) {
    if (keyCode == LEFT) {
      luigiX--;
    } else if (keyCode == RIGHT) {
      luigiX++;
    }
  }
}
  • itgoesvnaaaitgoesvnaaa

    I have another question for this same project.

    If I am trying to make luigi flee from mario once mario get to close to him how would I do that? I am trying to make him "flee" to the right.

    My code right now is: float marioX = 100; float marioY = 425; float luigiX = 400; float luigiY = 425;

    void setup() {
  size (600, 600);
  smooth();
}

void draw(){
  background(41, 194, 252);

   fill(54, 252, 41);
stroke(54, 252, 41); 
 rect(0,500, 600, 100);

 fill(254, 255, 36);
 stroke(245, 255, 36);
ellipse(475, 100, 120, 120);

mario(marioX, marioY, 1.5);
luigiLeft(luigiX, luigiY, 1.5);

} 

void keyPressed() {
    if (key == 'z') {
    marioX-=5;
    } else if (key == 'x') {
      marioX+=5;
    }

 if (key == CODED) {
  if (keyCode == LEFT) {
    luigiX-=5;
  } else if (keyCode == RIGHT) {
    luigiX+=5;
  }
 }
}


 void mario(float x, float y, float s) { 
  pushMatrix();
  translate(x-s*.75*50, y-s*50);
  scale(s*100/16);
  strokeWeight(.1);
  stroke(159, 89, 39); // Light brown color 
  fill(159, 89, 39); // Light brown color 
  rect(2, 7, 6, 1);
  rect(1, 8, 10, 1);
  rect(0, 9, 12, 1);
  rect(2, 10, 1, 1);
  rect(9, 10, 1, 1);
  rect(1, 14, 3, 1);
  rect(8, 14, 3, 1);
  rect(0, 15, 4, 1);
  rect(8, 15, 4, 1);
  stroke(244, 164, 96); // Peach color 
  fill(244, 164, 96); // Peach color 
  rect(5, 2, 4, 1);  
  rect(2, 3, 9, 1);
  rect(2, 4, 10, 1);
  rect(3, 5, 4, 1);
  rect(3, 6, 7, 1);
  rect(0, 10, 2, 1);
  rect(10, 10, 2, 1);
  rect(0, 11, 3, 1);
  rect(9, 11, 3, 1);
  rect(0, 12, 2, 1);
  rect(10, 12, 2, 1);
  stroke(220, 0, 0); // Red color 
  fill(220, 0, 0); // Red color 
  rect(4, 7, 1, 1);
  rect(4, 8, 1, 1);
  rect(7, 8, 1, 1);
  rect(4, 9, 4, 1);
  rect(3, 10, 1, 1);
  rect(5, 10, 2, 1);
  rect(8, 10, 1, 1);
  rect(3, 11, 6, 1);
  rect(2, 12, 8, 1);
  rect(2, 13, 3, 1);
  rect(7, 13, 3, 1);
  stroke(139, 69, 19); // Dark brown color 
  fill(139, 69, 19); // Dark brown color 
  rect(2, 2, 3, 1);
  rect(7, 2, 1, 1);
  rect(1, 3, 1, 1);
  rect(3, 3, 1, 1);
  rect(7, 3, 1, 1);
  rect(1, 4, 1, 1);
  rect(3, 4, 2, 1);
  rect(8, 4, 1, 1);
  rect(1, 5, 2, 1);
  rect(7, 5, 4, 1);
  stroke(255, 215, 0); // Gold color 
  fill(255, 215, 0); // Gold color 
  rect(4, 10, 1, 1);
  rect(7, 10, 1, 1);
  stroke(220, 0, 0); // Red color 
  fill(220, 0, 0); // Red color 
  rect(3, 0, 5, 1);
  rect(2, 1, 9, 1);
  popMatrix();
}

void luigiLeft(float x, float y, float s) { 
  pushMatrix();
  translate(x+s*.75*50, y-s*50);
  scale(-s*100/16,s*100/16);
  strokeWeight(.1);
  stroke(46, 139, 87); // Green shirt
  fill(46, 139, 87); // Green shirt
  rect(2, 7, 6, 1);
  rect(1, 8, 10, 1);
  rect(0, 9, 12, 1);
  rect(2, 10, 1, 1);
  rect(9, 10, 1, 1);
  stroke(109, 49, 9); // Dark brown shoes
  fill(109, 49, 9); // Dark brown shoes
  rect(1, 14, 3, 1);
  rect(8, 14, 3, 1);
  rect(0, 15, 4, 1);
  rect(8, 15, 4, 1);
  stroke(244, 164, 96); // Peach color 
  fill(244, 164, 96); // Peach color 
  rect(5, 2, 4, 1);  
  rect(2, 3, 9, 1);
  rect(2, 4, 10, 1);
  rect(3, 5, 4, 1);
  rect(3, 6, 7, 1);
  rect(0, 10, 2, 1);
  rect(10, 10, 2, 1);
  rect(0, 11, 3, 1);
  rect(9, 11, 3, 1);
  rect(0, 12, 2, 1);
  rect(10, 12, 2, 1);
  stroke(45, 40, 240); // Blue overalls
  fill(45, 40, 240); // Blue overalls
  rect(4, 7, 1, 1);
  rect(4, 8, 1, 1);
  rect(7, 8, 1, 1);
  rect(4, 9, 4, 1);
  rect(3, 10, 1, 1);
  rect(5, 10, 2, 1);
  rect(8, 10, 1, 1);
  rect(3, 11, 6, 1);
  rect(2, 12, 8, 1);
  rect(2, 13, 3, 1);
  rect(7, 13, 3, 1);
  stroke(109, 49, 9); // Dark brown facial features
  fill(109, 49, 9); // Dark brown facial features
  rect(2, 2, 3, 1);
  rect(7, 2, 1, 1);
  rect(1, 3, 1, 1);
  rect(3, 3, 1, 1);
  rect(7, 3, 1, 1);
  rect(1, 4, 1, 1);
  rect(3, 4, 2, 1);
  rect(8, 4, 1, 1);
  rect(1, 5, 2, 1);
  rect(7, 5, 4, 1);
  stroke(255, 215, 0); // Gold color 
  fill(255, 215, 0); // Gold color 
  rect(4, 10, 1, 1);
  rect(7, 10, 1, 1);
  stroke(46, 139, 87); // Green hat
  fill(46, 139, 87); // Green hat
  rect(3, 0, 5, 1);
  rect(2, 1, 9, 1);
  popMatrix();
}
  • TfGuy44TfGuy44

    DON'T FEATURE CREEP. Tell us exactly what your end goal is NOW.

    DON'T START NEW THREADS ON THE SAME TOPIC. Too late. Use the other thread instead.

    Someone lock this, mmk?

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