var space = createSprite(0, 0 ,400, 400);
space.setAnimation("space");
space.scale = 2.5;
space.velocityY = 5;
space.y = space.height/2;


//creating player
var player = createSprite(190, 375,20,20);
player.setAnimation("playerShip3_blue_1");
player.scale=0.5;

//creating a group
var enemiesGroup = createGroup();
var bulletGroup = createGroup();
var AGroup = createGroup();

var score=0;
var gameState = "Play";

function draw() {

  background(10);
  createEdgeSprites();
 
  player.x = World.mouseX;
 

  
  if (keyDown("space")) {
        bullets();
  }
 
 if(bulletGroup.isTouching(enemiesGroup)){
   enemiesGroup.destroyEach();
   score=score+2;
   playSound("sound://category_explosion/8bit_explosion.mp3");
 }
 
 if(bulletGroup.isTouching(AGroup)){
   AGroup.destroyEach();
   score=score+1;
   playSound("sound://category_explosion/puzzle_game_break_magic_01.mp3");
 }
 
 
  //killing  enemies one by one
 for(var i=0;i<enemiesGroup.length;i++){

    if(bulletGroup.isTouching(enemiesGroup)){
     
     enemiesGroup.get(i).destroy();
     playSound("sound://category_explosion/melodic_loss_1.mp3", false);
      score=score+2;
    }
    
  }
 //reducing the score i the enemy escapes
  for(var j=0;j<enemiesGroup.length;j++){
     
  if(enemiesGroup[j].isTouching(bottomEdge)){
    
    enemiesGroup.get(j).destroy();
    playSound("sound://category_explosion/air_explode_bonus_5.mp3", false);
    
    score=score-2;
    
 }
  }
  
 enemyShips();
  if(gameState === "Play"){
    space.velocityY =(5 + 3*score/50);
    textSize(30);
  text("Score:" +  score , 260,40);
    if(World.frameCount % 60 === 0){
       Asteroid();
    }
    space.velocityY = 5;
    if (space.y > 500) {
    space.y = space.height/2;
  }
  space.scale = 2.5;
    player.setAnimation("playerShip3_blue_1");
    space.setAnimation("space");
    fill("white");
    textSize(22);
    if(enemiesGroup.isTouching(player)){
      gameState = "End";
      
    }
    }
  else if(gameState === "End"){
    background("lavender");
    space.velocityY=0;
    fill("white");
    stroke("black");
    strokeWeight(5);
    textSize(50);
    text("You Lose",100,200);
    stopSound("sound://category_explosion/air_explode_bonus_5.mp3");
    stopSound("sound://category_explosion/puzzle_game_break_magic_01.mp3");
    score = 0;
    re();
  }
}


function enemyShips(){
//defining the body of obstacles
if(World.frameCount%50===0){
var enemy=createSprite(206,372);

enemy.scale=0.5;
enemy.velocityY = 8;
enemy.y=28;
enemy.x=randomNumber(17,363);
enemy.setAnimation("enemy");
enemiesGroup.add(enemy);
if(gameState === "End"){
  enemiesGroup.setLifetimeEach(-1);
}

}
 drawSprites();
}

function Asteroid(){
    var asteroids=createSprite(160,17);
    asteroids.velocityY = 6;
    asteroids.setAnimation("ore_ironAlt_1");
    asteroids.scale=0.5;
    asteroids.y=28;
    asteroids.x=randomNumber(10,390);
    player.depth=asteroids.depth+1 ;
    AGroup.add(asteroids);
    if(gameState === "End"){
  AGroup.setLifetimeEach(-1);
}
    
}
function bullets(){
  
    var bullet=createSprite(216,371,6,9);
    bullet.x=player.x;
    bullet.velocityY=-3;
    bulletGroup.add(bullet);
}
function re(){
   var RE = createSprite(200,200,50,50);
    RE.setAnimation("re");
}