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Help with collision detection for racing game

PokerCoderPokerCoder
edited January 2014 in Questions about Code

Hi there, i was recommended this forum by my college. I have created a racing game where you control one of the space ships and have to race 3 other computer controlled ships around a track.

Everything works how i want however I am having issues keeping my ship on the track. The collision detection i have used only works for LEFT and RIGHT controls but for UP and DOWN the ship will go off the track. Any advice or pointers on where i have gone wrong would really help! Thanks.

The exact code in reference to the movement is here:

 if (posX < 200 && posX< 1050 && posY > 150 && posY< 650){ //TRIED A VARIATION ON COLLISION CONTROL BUT IT DIDN'T WORK. LEFT IT IN FOR THE CODE TO BE SEEN.
  boolean is_ship_on_the_track = true;
}


   if (is_the_LEFT_key_down) { //WHAT TO DO IF CERTAIN KEYS ARE PRESSED
if ((red(get(int(posX-10),int(posY)))==255))
{
posX-=0;
}
else
{
posX-=5;
}
}

if (is_the_RIGHT_key_down) {
if ((red(get(int(posX+15),int(posY)))==255))
{
posX-= 0;
}
else
{
posX += 5;
}
}

if (is_the_UP_key_down) {
if ((red(get(int(posX),int(posY-10)))==255)) // PLAYING AROUND WITH OPTIONS TO GET THE SHIP TO STAY ON THE TRACK
{
posY-= 0;
}
else
{
posY-=5;
}
}

if (is_the_DOWN_key_down) {
if ((red(get(int(posX),int(posY+15)))==255)) // PLAYING AROUND WITH OPTIONS TO GET THE SHIP TO STAY ON THE TRACK
{
posY-= 0;
}
else
{
posY+=5;
}
}

The entire code is below. I have pasted the images at the bottom. Thank you!

BOUNDARY TAB:

void boundary() { //SETTING THE FUNCTION FOR THE TRACKS BOUNDARY TO APPEAR IN ORANGE
  stroke(255);
  strokeWeight(160);
  bezier(200, 450, 200, 100, 900, 100, 900, 175);
  bezier( 900, 175, 900, 450, 900, 450, 1050, 450);
  bezier( 1050, 450, 1200, 450, 1400, 600, 900, 600);   
  bezier( 900, 600, 600, 600, 400, 600, 200, 450);
}

STARTLINE TAB:

void startLine () { //SETTING THE FUNCTION FOR THE START/FINISH LINE
  noStroke();
  fill (random(0, 255), random(0, 127), random(0, 80), 255);
  quad(270, 420, 135, 460, 153, 500, 295, 436);
}

TRACK TAB:

void track() { //SETTING THE FUNCTION FOR THE TRACK
  fill(255, 0);
  stroke(#555555);
  strokeWeight(140);
  beginShape();
  vertex(200, 450);
  bezierVertex( 200, 100, 900, 100, 900, 175);
  bezierVertex( 900, 450, 900, 450, 1050, 450);
  bezierVertex( 1200, 450, 1400, 600, 900, 600);   
  bezierVertex( 600, 600, 400, 600, 200, 450);
  endShape();
}

WORDS TAB:

void words() {   //SETTING THE FUNCTION FOR THE TEXT THAT WILL APPEAR ON THE GAME
  textSize(40);
  fill(0);
  text("Alien Race v2.0", 20, 50);
  textSize(30);
  text("Use Arrow Keys To", 1035, 100);
  text("Control Your Ship", 1040, 130);
  text("First Across the Line Wins!", 1000, 170);
  textSize(25);
  text("Press UP Arrow Key To Begin", 1020, 200);
}

MAIN CODE:

//TO START THE GAME YOU NEED TO PRESS THE UP ARROW KEY
//THEN YOU CONTROL YOUR SHIP USING THE ARROW KEYS
import ddf.minim.*; //LOADING THE MUSIC LIBRARY
Minim minim=new Minim(this);
AudioPlayer player2; //THE DIFERENT AUDIO PLAYERS REQUIRED
AudioPlayer player3; 
AudioPlayer player4; 

PImage img; //LOADING THE IMAGES
PImage img2;
PImage img3;
PImage img4;
PImage img5;
PImage img11;
PImage img33;
float posX = 200; //SETTING THE START X-COORDINATE FOR THE PLAYERS SHIP
float posY = 390;  //SETTING THE START Y-COORDINATE FOR THE PLAYERS SHIP
int state; //SETTING THE STATE FOR THE GAME
boolean is_the_UP_key_down = false; //SETTING THE VARIABLES TO TRACK WHETHER THE KEYS USED IN THE GAME ARE PRESSED OR NOT
boolean is_the_DOWN_key_down = false;
boolean is_the_LEFT_key_down = false;
boolean is_the_RIGHT_key_down = false;
boolean is_ship_on_the_track = true;

void setup() {

  noLoop(); //STARTING THE GAME WITH NO LOOP SO THE ALIEN SHIPS DON'T AUTOMATICALLY START GOING ROUND THE TRACK
  size(1400, 700);
  smooth(8);
  state =0; //HERE I AM STATING THE CURRENT GAME STATE
  frameRate(25);
  imageMode (CENTER); //BY SETTING THE IMAGE MODE TO CENTER IT ENABLES ME TO TRACK THE X,Y POSITIONS OF THE IMAGES FOR WHEN THEY CROSS THE FINISHING LINE
  player2 =minim.loadFile("cheer.mp3"); //LOADING THE SPECIFIC SOUNDS
  player3 =minim.loadFile("boo.mp3");
  player4 =minim.loadFile("planet.mp3");
  player4.play(); //I WANT THIS SOUND TO PLAY FROM THE MOMENT THE GAME IS STARTED SO I PUT IT IN SETUP RATHER THAN DRAW
  player4.loop(); //THE SOUND FILE IS SHORTER THAT THE TIME IT WILL TAKE TO PLAY THE GAME SO I NEED IT TO LOOP
  img = loadImage("0.png"); //LOADING THE SPECIFIC IMAGE FILES FOR THE DIFERENT CHARACTERS
  img2 = loadImage("alien1.png");
  img3 = loadImage("alien2.png");
  img4 = loadImage("alien3.png");
  img5 = loadImage("alien4.png");
  img33 = loadImage("planet.jpg"); //THE BACKGROUND IMAGE
}
float f = 0.0175; //SETTING THE VARIABLES FOR THE COMPUTER CONTROLLED SHIPS, SPECIFICALLY THEIR MOMENTUM WHEN THEY GO ROUND THE CIRCUIT
float t = 0.01;
float h = 0.0075;
float j = 0.0125;


void draw() { 

  println(get(mouseX, mouseY));

  if (state==0) //STATE 0 IS WHEN THE GAME BEGINS SO I HAVE TO CALL UP MY FUNCTIONS AND SET CERTAIN VARIABLES
  {
    f += 0.009; //THE ADDITIONAL MOMENTUM I WANT THE COMPUTER CONTROLLED SHIPS TO GET THROUGH THE GAIM
    t += 0.0065;
    h += 0.0045;
    j += 0.0075;

    background(img33);


    boundary(); //CALLING UP MY FUNCTIONS
    track();
    startLine();
    words();

    image(img, posX, posY); //SETTING THE START POSITION AND CALLING UP THE IMAGE FOR THE PLAYERS CONTROLLED SHIP

 if (posX < 200 && posX< 1050 && posY > 150 && posY< 650){ //TRIED A VARIATION ON COLLISION CONTROL BUT IT DIDN'T WORK. LEFT IT IN FOR THE CODE TO BE SEEN.
  boolean is_ship_on_the_track = true;
}


   if (is_the_LEFT_key_down) { //WHAT TO DO IF CERTAIN KEYS ARE PRESSED
if ((red(get(int(posX-10),int(posY)))==255))
{
posX-=0;
}
else
{
posX-=5;
}
}

if (is_the_RIGHT_key_down) {
if ((red(get(int(posX+15),int(posY)))==255))
{
posX-= 0;
}
else
{
posX += 5;
}
}

if (is_the_UP_key_down) {
if ((red(get(int(posX),int(posY-10)))==255)) // PLAYING AROUND WITH OPTIONS TO GET THE SHIP TO STAY ON THE TRACK
{
posY-= 0;
}
else
{
posY-=5;
}
}

if (is_the_DOWN_key_down) {
if ((red(get(int(posX),int(posY+15)))==255)) // PLAYING AROUND WITH OPTIONS TO GET THE SHIP TO STAY ON THE TRACK
{
posY-= 0;
}
else
{
posY+=5;
}
}

    fill(0, 0, 0, 0); //THIS IS THE PATH I WANT COMPUTER CONTROLLED SHIP 1 TO FOLLOW AROUND THE TRACK
    if (f < 1) {
      float x = bezierPoint( 230, 230, 930, 930, f);
      float y = bezierPoint( 450, 100, 100, 175, f);
      image(img2, x, y);
    } 
    else if ( f < 2 ) {
      float x = bezierPoint( 930, 930, 930, 1020, f-1);  // THE IF STATEMENTS ENSURE THAT THE SHIPS DON'T GO TO FAST OR CUT CORNERS
      float y = bezierPoint( 175, 450, 450, 450, f-1);

      image(img2, x, y);
    } 
    else if ( f < 3 ) {
      float x = bezierPoint( 1020, 1170, 1350, 880, f-2);
      float y = bezierPoint( 450, 450, 600, 600, f-2);

      image(img2, x, y);
    } 
    else if ( f < 4 ) {
      float x = bezierPoint( 880, 630, 430, 230, f-3);
      float y = bezierPoint( 600, 600, 600, 450, f-3);
      if (x > 135 && x < 270 && y > 420 && y<460) //THIS IF STATEMENT IS FOR WHAT STATE THE GAME SHOULD GO TO WHEN THE SHIP CROSSES THE FINISHING LINE
      {
        state=4;
      }
      image(img2, x, y);
    } 
    else if ( f > 4 ) {
      f = 0;
    }

    if (h < 1) { //THIS IS THE PATH I WANT COMPUTER CONTROLLED SHIP 2 TO FOLLOW AROUND THE TRACK
      float x = bezierPoint( 200, 200, 900, 900, h);
      float y = bezierPoint( 460, 110, 110, 185, h);

      image(img3, x, y);
    } 
    else if ( h < 2 ) {
      float x = bezierPoint( 900, 900, 900, 1050, h-1);
      float y = bezierPoint( 185, 460, 460, 460, h-1);

      image(img3, x, y);
    } 
    else if ( h < 3 ) {
      float x = bezierPoint( 1050, 1200, 1400, 900, h-2);
      float y = bezierPoint( 460, 460, 610, 610, h-2);

      image(img3, x, y);
    } 
    else if ( h < 4 ) {
      float x = bezierPoint( 900, 600, 400, 200, h-3);
      float y = bezierPoint( 610, 610, 610, 460, h-3);
      if (x > 135 && x < 270 && y > 420 && y<460) //THIS IF STATEMENT IS FOR WHAT STATE THE GAME SHOULD GO TO WHEN THE SHIP CROSSES THE FINISHING LINE
      {
        state=3;
      }
      image(img3, x, y);
      if (x > 135 && x < 270 && y > 420 && y<460)
      {
        state=3;
      }
    } 
    else if ( h > 4 ) {
      h = 0;
    }


    if (t < 1) { //THIS IS THE PATH I WANT COMPUTER CONTROLLED SHIP 3 TO FOLLOW AROUND THE TRACK
      float x = bezierPoint( 200, 200, 900, 900, t);
      float y = bezierPoint( 450, 100, 100, 175, t);

      image(img4, x, y);
    } 
    else if ( t < 2 ) {
      float x = bezierPoint( 900, 900, 900, 1050, t-1);
      float y = bezierPoint( 175, 450, 450, 450, t-1);
      image(img4, x, y);
    } 
    else if ( t < 3 ) {
      float x = bezierPoint( 1050, 1200, 1400, 900, t-2);
      float y = bezierPoint( 450, 450, 600, 600, t-2);
      image(img4, x, y);
    } 
    else if ( t < 4 ) {
      float x = bezierPoint( 900, 600, 400, 200, t-3);
      float y = bezierPoint( 600, 600, 600, 450, t-3);
      if (x > 135 && x < 270 && y > 420 && y<460) //THIS IF STATEMENT IS FOR WHAT STATE THE GAME SHOULD GO TO WHEN THE SHIP CROSSES THE FINISHING LINE
      {
        state=2;
      }
      image(img4, x, y);
    } 
    else if ( t > 4 ) {
      t = 0;
    }

    if (posX > 135 && posX < 270 && posY > 420 && posY<460)
    {
      state=1; //THIS IF STATEMENT IS FOR WHAT STATE THE GAME SHOULD GO TO WHEN THE SHIP CROSSES THE FINISHING LINE
    }


if (j < 1) { //THIS IS THE PATH I WANT COMPUTER CONTROLLED SHIP 4 TO FOLLOW AROUND THE TRACK
      float x = bezierPoint( 205, 205, 905, 905, j);
      float y = bezierPoint( 460, 110, 110, 185, j);

      image(img5, x, y);
    } 
    else if ( j < 2 ) {
      float x = bezierPoint( 905, 905, 905, 1055, j-1);
      float y = bezierPoint( 185, 460, 460, 460, j-1);
      image(img5, x, y);
    } 
    else if ( j < 3 ) {
      float x = bezierPoint( 1055, 1205, 1405, 905, j-2);
      float y = bezierPoint( 460, 460, 610, 610, j-2);
      image(img5, x, y);
    } 
    else if ( j < 4 ) {
      float x = bezierPoint( 905, 605, 405, 205, j-3);
      float y = bezierPoint( 610, 610, 610, 460, j-3);
      if (x > 135 && x < 270 && y > 420 && y<465) //THIS IF STATEMENT IS FOR WHAT STATE THE GAME SHOULD GO TO WHEN THE SHIP CROSSES THE FINISHING LINE
      {
        state=2;
      }
      image(img5, x, y);
    } 
    else if ( j > 4 ) {
      j = 0;
    }

    if (posX > 135 && posX < 270 && posY > 420 && posY<460)
    {
      state=1; //THIS IF STATEMENT IS FOR WHAT STATE THE GAME SHOULD GO TO WHEN THE SHIP CROSSES THE FINISHING LINE
    }




    if (state==1) //WHAT TEXT AND SOUNDS THERE SHOULD BE DEPENDING ON WHICH SHIP CROSSES THE FINISHING LINE
    {
      player4.pause();
      player2.play();
      fill (255, 0, 0);
      textSize (100);
      text ("You Win", 375, 400);
    }

    if (state==2)
    {
      player4.pause();
      player3.play();
      fill (0, 0, 255);
      textSize (60);
      text ("Alien 3 Wins", 350, 400);
    }

    if (state==3)
    {
      player4.pause();
      player3.play();
      fill (0, 0, 255);
      textSize (60);
      text ("Alien 2 Wins", 350, 400);
    }


    if (state==4)
    {
      player4.pause();
      player3.play();
      fill (255, 255, 255);
      textSize (60);
      text ("Alien 1 Wins", 350, 400);
    }


  }
}

void keyPressed() { //SETTING THE VARIABLES FOR THE KEY PRESSED TO TRUE IF THE PLAYER PRESSES THAT KEY OR HOLDS IT DOWN
  if (keyCode == UP) {
    is_the_UP_key_down=true;

    loop(); //WHEN THE KEY UP IS FIRST PRESSED I WANT THE GAME TO START
  }

  if (keyCode == DOWN) {
    is_the_DOWN_key_down=true;
  }

  if (keyCode == LEFT) {
    is_the_LEFT_key_down=true;
  }

  if (keyCode == RIGHT) {
    is_the_RIGHT_key_down=true;
  }
}


void keyReleased() { //SETTING THE VARIABLE TO FALSE FOR WHEN THE PLAYER ISN'T PRESSING A KEY TO STOP THE SHIP AUTOMATICALLY MOVING

  if (keyCode == UP) {
    is_the_UP_key_down=false;
  }


  if (keyCode == DOWN) {
    is_the_DOWN_key_down=false;
  }

  if (keyCode == LEFT) {
    is_the_LEFT_key_down=false;
  }


  if (keyCode == RIGHT) {
    is_the_RIGHT_key_down=false;




  }
}

0 alien1 alien2 alien3 alien4 planet

Tagged:

Answers

  • KevinWorkmanKevinWorkman

    You'd be much better off posting your code in the form of an SSCCE. Post a basic example using rectangles instead of images, and eliminate all of the extra code you have not directly related to your question.

    That being said, let me ask a dumb question: you say horizontal collision detection is working. Why not just use that same logic, just switched for the vertical axis?

  • PokerCoderPokerCoder

    I will try now to make a mini version of my code so the issue is more visible.

    I did use exactly the same logic for the vertical axis but it still doesn't work.

    For left the code is:

    if ((red(get(int(posX-15),int(posY)))==255))

    For right the code is:

    if ((red(get(int(posX+15),int(posY)))==255))

    For Up the code is:

    if ((red(get(int(posX),int(posY-15)))==255))

    For Down the code is:

    if ((red(get(int(posX),int(posY+15)))==255))

  • PokerCoderPokerCoder

    I have now edited my code down to the basics. It still uses 1 image which i have pasted below, but this code all works as intended and highlights my issue.

    PImage img; //LOADING THE IMAGES
float posX = 200; //SETTING THE START X-COORDINATE FOR THE PLAYERS SHIP
float posY = 390;  //SETTING THE START Y-COORDINATE FOR THE PLAYERS SHIP
int state; //SETTING THE STATE FOR THE GAME
boolean is_the_UP_key_down = false; //SETTING THE VARIABLES TO TRACK WHETHER THE KEYS USED IN THE GAME ARE PRESSED OR NOT
boolean is_the_DOWN_key_down = false;
boolean is_the_LEFT_key_down = false;
boolean is_the_RIGHT_key_down = false;

void setup() {
  size(1400, 700);
  smooth(8);
  frameRate(25);
  imageMode (CENTER); //BY SETTING THE IMAGE MODE TO CENTER IT ENABLES ME TO TRACK THE X,Y POSITIONS OF THE IMAGES FOR WHEN THEY CROSS THE FINISHING LINE
  img = loadImage("0.png"); //LOADING THE SPECIFIC IMAGE FILES FOR THE DIFERENT CHARACTERS 
}
void draw() { 

  stroke(255);
  strokeWeight(160);
  bezier(200, 450, 200, 100, 900, 100, 900, 175);
  bezier( 900, 175, 900, 450, 900, 450, 1050, 450);
  bezier( 1050, 450, 1200, 450, 1400, 600, 900, 600);   
  bezier( 900, 600, 600, 600, 400, 600, 200, 450);

  fill(255, 0);
  stroke(#555555);
  strokeWeight(140);
  beginShape();
  vertex(200, 450);
  bezierVertex( 200, 100, 900, 100, 900, 175);
  bezierVertex( 900, 450, 900, 450, 1050, 450);
  bezierVertex( 1200, 450, 1400, 600, 900, 600);   
  bezierVertex( 600, 600, 400, 600, 200, 450);
  endShape();

    image(img, posX, posY); //SETTING THE START POSITION AND CALLING UP THE IMAGE FOR THE PLAYERS CONTROLLED SHIP

   if (is_the_LEFT_key_down) { //WHAT TO DO IF CERTAIN KEYS ARE PRESSED
if ((red(get(int(posX-15),int(posY)))==255))
{
posX-=0;
}
else
{
posX-=5;
}
}

if (is_the_RIGHT_key_down) {
if ((red(get(int(posX+15),int(posY)))==255))
{
posX-= 0;
}
else
{
posX += 5;
}
}
if (is_the_UP_key_down) {
if ((red(get(int(posX),int(posY+15)))==255)) // PLAYING AROUND WITH OPTIONS TO GET THE SHIP TO STAY ON THE TRACK
{
posY-= 0;
}
else
{
posY-=5;
}
}
if (is_the_DOWN_key_down) {
if ((red(get(int(posX),int(posY-15)))==255)) // PLAYING AROUND WITH OPTIONS TO GET THE SHIP TO STAY ON THE TRACK
{
posY-= 0;
}
else
{
posY+=5;
}
}  
}
void keyPressed() { //SETTING THE VARIABLES FOR THE KEY PRESSED TO TRUE IF THE PLAYER PRESSES THAT KEY OR HOLDS IT DOWN
  if (keyCode == UP) {
    is_the_UP_key_down=true;
  }
  if (keyCode == DOWN) {
    is_the_DOWN_key_down=true;
  }
  if (keyCode == LEFT) {
    is_the_LEFT_key_down=true;
  }
  if (keyCode == RIGHT) {
    is_the_RIGHT_key_down=true;
  }
}
void keyReleased() { //SETTING THE VARIABLE TO FALSE FOR WHEN THE PLAYER ISN'T PRESSING A KEY TO STOP THE SHIP AUTOMATICALLY MOVING
  if (keyCode == UP) {
    is_the_UP_key_down=false;
  }
  if (keyCode == DOWN) {
    is_the_DOWN_key_down=false;
  }
  if (keyCode == LEFT) {
    is_the_LEFT_key_down=false;
  }
  if (keyCode == RIGHT) {
    is_the_RIGHT_key_down=false;
  }
}

    http://forum.processing.org/two/uploads/imageupload/704/1LQOW0PANVI6.png

  • colouredmirrorballcolouredmirrorball
    edited January 2014

    That's an interesting way of checking where the space ships are! Why don't you just check the positions itself? As in, if(posY < 0) posY = 0;?

    Hint: when you do ctrl+T in Processing, it auto-formats the code for you which makes it a lot easier to read here.

  • PokerCoderPokerCoder

    I thought it would be best to check the position/collision based on colour because i have created a block coloured barier and the track that the ships go around is curved.

    My biggest confusion is why my code works how i want it to, including the movements for Left & Right but does not work for Up & Down.

    Next time i need to post any code i will ensure that i use that Hint, thank you.

  • colouredmirrorballcolouredmirrorball

    If the track is curved, maybe that's not even that bad of an idea. Gotta keep that in mind.

    I think I found the problem though. In Processing, Y = 0 at the top and height at the bottom. This means, if you go up, you need to check the colour of the pixel with a lower Y value (and vice versa for going down). if ((red(get(int(posX),int(posY+15)))==255)) needs to be if (red(get(int(posX),int(posY-15)))==255).

  • GoToLoopGoToLoop
    edited January 2014

    Processing isn't very reliable for color-based checking! B/c it blends a pixel being rendered based on the color of the 1 present.
    And all transparent colors are converted to their opaque counterpart as well!

    Doing color checks on separate PGraphics layers has more chances of success though! B-)

  • PoerschPoersch

    Exactly like GoToLoop said, use an offscreen buffer (PGraphics) as collision Map.

    Played around with your code. The following snippet is really basic, but should get you started:

    float posX = 200;
float posY = 390;
float velX = 0;
float velY = 0;
boolean[] isKeyPressed = new boolean[256];
PGraphics collisionMap;

void setup() {

    size(1400, 700, P2D);
    smooth(8);
    rectMode(CENTER);

    collisionMap = createGraphics(width, height);
    collisionMap.beginDraw();
    collisionMap.noSmooth();
    collisionMap.noFill();
    collisionMap.stroke(#ffffff);
    collisionMap.strokeWeight(140);
    collisionMap.beginShape();
    collisionMap.vertex(200, 450);
    collisionMap.bezierVertex(200, 100, 900, 100, 900, 175);
    collisionMap.bezierVertex(900, 450, 900, 450, 1050, 450);
    collisionMap.bezierVertex(1200, 450, 1400, 600, 900, 600);   
    collisionMap.bezierVertex(600, 600, 400, 600, 200, 450);
    collisionMap.endShape();
    collisionMap.endDraw();

}

void draw() { 

    velX *= 0.9;
    velY *= 0.9;

    if(isKeyPressed[LEFT])
        velX -= 0.3;
    if(isKeyPressed[RIGHT])
        velX += 0.3;
    if(isKeyPressed[UP])
        velY -= 0.3;
    if(isKeyPressed[DOWN])
        velY += 0.3;

    if((velX < 0 && getCollision(posX - 15, posY)) || (velX > 0 && getCollision(posX + 15, posY)))
        velX = -velX;
    if((velY < 0 && getCollision(posX, posY - 15)) || (velY > 0 && getCollision(posX, posY + 15)))
        velY = -velY;

    posX += velX;
    posY += velY;

    background(0);

    beginShape();
    noFill();
    stroke(#aaaaaa);
    strokeWeight(140);
    vertex(200, 450);
    bezierVertex(200, 100, 900, 100, 900, 175);
    bezierVertex(900, 450, 900, 450, 1050, 450);
    bezierVertex(1200, 450, 1400, 600, 900, 600);   
    bezierVertex(600, 600, 400, 600, 200, 450);
    endShape();

    fill(#ff0000);
    noStroke();
    rect(posX, posY, 30, 30);

}

void keyPressed() {
    isKeyPressed[keyCode] = true;
}

void keyReleased() {
    isKeyPressed[keyCode] = false;
}

boolean getCollision(float x, float y) {
    return collisionMap.get((int)x, (int)y) == 0;
}
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