const RIGHT_ = {x:size_,y:0};

const LEFT_ = {x:-size_,y:0};

const UP_ = {x:0,y:-size_};

const DOWN_ = {x:0,y:size_};

const bugs = ['🦋','🐞','🦀','🦐','🦂','🐛','🐝','🐙','🐡','🦞','🐌'];

let food_loc;

let food;

const W=800;

const H=600;

let game_over = false;

let start =false;

const title = "SNAKE GAME";

const score_label ="Score: ";

​

const speed_label ="Speed: ";

let score=0;

let speed =5;

function setup() {

  createCanvas(W, H);

  S= new Snake(Math.floor(W/2),Math.floor(H/2),10);

  textSize(10);

  food_loc = {x:random(10,W-10),y:random(60,H-10)};

  food = bugs[Math.floor(Math.random() * bugs.length)];

​

}

​

function draw() {

  background(0);

  frameRate(speed);

  wall_setup();

  push()

  fill('yellow');

  textSize(18);

  text(score_label,W/10,30);

  fill('green');

  text(score,W/5,30);

  fill('magenta');

  textSize(26);

  text(title,W/2-title.length/2,30);

​

  fill('cyan');

  textSize(18);

  text(speed_label,W-W/5,30);

  fill('orange');

  text(speed,W-W/10,30);

  pop()

  S.show();

  if (start){

      S.go();

      text(food,food_loc.x,food_loc.y);

  }

​

  if (edist(S.head,food_loc)<10){

     S.body.unshift({x:S.head.x,y:S.head.y});

     S.content.unshift(food);

     food_loc = {x:random(10,W-10),y:random(60,H-10)};

     food = bugs[Math.floor(Math.random() * bugs.length)]; 

     score+=10

     speed+=1;

  }

  else if ((S.bit_itself()) || (S.head.x <10) || (S.head.x >W-20) || (S.head.y<60) || (S.head.y>H-10)){

    game_over = true;

    noLoop();

  }

}

​

function edist(p1,p2){

  return dist(p1.x,p1.y,p2.x,p2.y);

}

​

function wall_setup(){

    for (let i=20;i<50;i=i+8){

​

         text('◼︎',W/3,i);

         text('◼︎',2*W/3,i);

    }

    for (let i=20;i<50;i=i+8){

​

         text('◼︎',0,i);

         text('◼︎',W-10,i);

    }

    for (let i=0;i<W;i=i+8){

        text('◼︎',i,10);

   }

    for (let i=50;i<H;i=i+8){

        text('▫️',0,i);

        text('▫️',W-10,i);

   }

    for (let i=0;i<W;i=i+8){

        text('▫️',i,50);

        text('▫️',i,H);

   }

}

​

​

​

function keyPressed(){

​

      if (keyCode === LEFT_ARROW){

        S.direction=LEFT_;

      }

      else if(keyCode === RIGHT_ARROW){

        S.direction=RIGHT_;

      }

      else if(keyCode === DOWN_ARROW){

        S.direction=DOWN_;

      }

      else if(keyCode === UP_ARROW){

        S.direction=UP_;

      }

      else if (keyCode === ENTER){

          start=true;

      }

  }

​

​

function Snake(x,y,size){

  this.size=size;

  this.body = [{x:x-size,y:y}];

  this.head={x:x,y:y};

  this.content= ['◻️'];

  this.head={x:x,y:y};

  this.head={x:x,y:y};

  this.direction = RIGHT_

​

  this.show = function(){

    fill('red');

    text('🔴',this.head.x,this.head.y);

    fill('white');

    textSize(this.size);

    let i=0;

    for(let b of this.body){

      text(this.content[i],b.x,b.y);

      i++;

    }

  }

  this.go = function(){

    const shead = {...this.head};

    this.head.x += this.direction.x;

    this.head.y += this.direction.y;

    this.body.unshift(shead);

    this.body.pop();

  }

  this.bit_itself = function(){

    for(let b of this.body){

      if(edist(this.head,b)<10){

        return true;

      }

    }

    return false;

  }

​

};

​