I am new to processing, and I am trying to use the easiest way to code the game snake.

tomFang2000

I have done the part which controls the snake to move, but I am still trying to figure out a way to duplicate the snake's tail after eating the apple. Here below is my code. Looking out for any suggestion and inspiration. Thanks a lot.

int x;
int y;
int a;
int b;
int a2;
int b2;
int aa,bb;
float dis;
int xpos=200;
int ypos=300;
int applex=int(random(1, 20))*20;
int appley=int(random(1, 30))*20;




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


}

void draw() {
  background(225);
  //drawlines();
  drawsnake();
  eatfood();
  drawfood();

}

void drawlines() {
  fill(0);
  stroke(0);
  x+=20;
  y+=20;
  if (x<=600) {
    line(x, 0, x, 600);
  }
  if (y<=600) {
    line(0, y, 600, y);
  }
}

void keyPressed() {
  if (keyCode == LEFT) {
    a=-5;
    b=0;
    a2=28;
    b2=0;
  } else if (keyCode == RIGHT) {
    a=5;
    b=0;
    a2=-28;
    b2=0;
  } else  if (keyCode == UP) {
    a=0;
    b=-5;
    b2=28;
    a2=0;
  } else if (keyCode == DOWN) {
    a=0;
    b=5;
    b2=-28;
    a2=0;
  }
}

void drawsnake() {
  fill(0);
  rect(xpos, ypos, 20, 20);
  xpos+=a;
  if (xpos>600) {
    xpos=0;
  }
  if (xpos<0) {
    xpos=600;
  }
  ypos+=b;
  if (ypos>600) {
    ypos=0;
  }
  if (ypos<0) {
    ypos=600;
  }
}

void drawfood() {
  fill(0, 225, 225);
  rect(applex, appley, 20, 20);
}

void eatfood(){
  dis=dist(xpos,ypos,applex,appley);
  if (dis<15){
applex=int(random(1, 20))*20;
appley=int(random(1, 30))*20;
clonesnake();
  }
}

void clonesnake(){

  fill(0);
  rect(xpos+a2, ypos+b2, 20, 20);



}

Lord_of_the_Galaxy

Format your code -
Press the gear icon to edit your post.
Select your code, ctrl + o to indent, leave a line above and below.

tomFang2000

what should i do if I use a mac.

Chrisir

no duplicate threads please

first in processing hit ctrl-t

then copy paste to forum

in forum:

then Select your code, press with mouse the C icon in the small command bar to indent, leave a line above and below the code

Lord_of_the_Galaxy

Read this page.
ctrl + o should work on Mac also (latest OS version).

Chrisir

afaik the key ctrl on mac is denoted as CMD

Lord_of_the_Galaxy

I just read this post - https://forum.processing.org/two/discussion/19520/update-the-readme-post#latest

tomFang2000

the format question is solved, anyone can help me with the actual problem?

Lord_of_the_Galaxy

Did you read the Objects tutorial?
And how about doing a Google search on how to make a snake game in Processing?

tomFang2000

Those online versions are too complicated for a bigginer

Chrisir

https://forum.processing.org/one/topic/the-snake-game-help.html

tomFang2000

I there a solution on the code I am working on to make the tails?

tomFang2000

is there a way to just add functions to my code in order to complete a snake game?

Chrisir

I there a solution on the code I am working on to make the tails?

Yes.

is there a way to just add functions to my code in order to complete a snake game?

yes

Chrisir

// snake variables
int snakesize=1; //size of the snake
int MAXLENGTH=1011;
int headx[]=new int[MAXLENGTH]; //xlocation
int heady[]=new int[MAXLENGTH]; //ylocation
int i;

//FOOD VARIABLES
int yumx=(round(random(49))+1)*10;
int yumy=(round(random(49))+1)*10;

//SPEED
//int speed;        
int xspeed, yspeed;

void setup () {

  size (500, 500);

  headx[0] = 250;
  heady[0] = 250;
  // SNAKE HEAD BEGINS UNMOVING.
  //speed=1;          
  xspeed=0;    
  yspeed=0;
}

void draw () {
  background (0);

  fill(255, 0, 0);
  ellipseMode(CENTER);
  ellipse(yumx, yumy, 15, 15);

  for (int i =0; i < snakesize; i++) {
    //tail
    fill(200, 20, 200);
    rectMode(CENTER);
    rect(headx[i], heady[i], 20, 20);
  }
  headx[0]=headx[0]+xspeed;
  heady[0]=heady[0]+yspeed;

  for (int i = snakesize; i > 0; i--) {
    headx[i] = headx[i-1];
    heady[i] = heady[i-1];
  }
  // FOOD
  if (snakesize<headx.length)
  {
    if (headx[0]>=yumx-20 && headx[0]<=yumx+20 && heady[0]>=yumy-20 && heady[0]<yumy+20)
    {
      yumx=(round(random(49))+1)*10;
      yumy=(round(random(49))+1)*10;

      snakesize++;

      if (i!=1)
      {
        headx[snakesize -1] = headx[snakesize - 2] - 0;
        heady[snakesize -1] = heady[snakesize - 2] - 20;
      }
    }
  }
}


void keyPressed()
{
  // ARROW KEYS OR LETTER KEYS PRESSED.
  // RIGHT & LEFT HAND CONTROLS.

  if (keyCode==UP || key == 'w')
  {
    xspeed=0;
    yspeed=-2;
  } else if (keyCode==DOWN || key =='s')
  {
    xspeed=0;
    yspeed=2;
  } else if (keyCode==LEFT || key=='a')
  {
    xspeed=-2;
    yspeed=0;
  } else if (keyCode==RIGHT || key =='d')
  {
    xspeed=2;
    yspeed=0;
  }
}