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// Define this if you want the run to return a score:


//AB.world.getScore = function()
//{
//	  return ( 0 );		
//};



// ----------------------P5 code --------------------
var screen = 0;
var y=-20;
var x=200;
var speed = 1;
var score= 0;

// setting the grid that the game will be played on to be the full height and width of the window
function setup() {
  createCanvas(windowWidth, windowHeight);
}

function draw() {
    // if screen = 0 than run start function
	if(screen == 0){
    start()
    // if screen = 1 then run game
  }else if(screen == 1){
  	startGame()
  	// if screen = 2 then run end function
  }else if(screen==2){
  	end()
  }	
}

function start(){
        // setting ther background colour for the start screen
		background(96, 100, 200)
		fill(255)
		// making the text appear in the center
		textAlign(CENTER);
		// the text for the beginning of the game
		text('Catch All The Snowballs by moving the mouse To Win!!', width / 2, height / 2)
		text('click to start', width / 2, height / 2 + 20);
		reset();
}

function startGame(){
  // setting ther background colour for the game
  background(100, 0, 100)
  // setting the score board
  text("Snowballs caught = " + score, 30,20)
  ellipse(x,y,20,20)
  // setting the white bucket to catch the snowballs, to the center of the screen
  rectMode(CENTER)
  // defining the dimension of the bucket and how to move it with the mouse along the x axis
  rect(mouseX,height-10,100,30)
	y+= speed;
  if(y>height){
    // end game screen appears if you do not catch a snow ball
  	screen =2
	 }
  if(y>height-10 && x>mouseX-20 && x<mouseX+20){
  	y=-20
  	// if snowball caught successfully then we increase the spead of the next falling snowball
    speed+=1
    // and we increase the scoreboard by 1
    score+= 1
  }
    // also if the snowball is caught successfully then the next ball drops from a random location
	if(y==-20){
  	pickRandom();
  }
}

// the function for randomly placing where the snowballs will fall from
function pickRandom(){
	x= random(20,width-20)
}

function end(){
        // setting ther background colour for the end screen
		background(150)
		// making the end of game text centered
		textAlign(CENTER);
		text('GAME OVER', width / 2, height / 2)
		// telling the player what their final score was
  	text("Snowballs Caught = " + score, width / 2, height / 2 + 20)
		text('click to play again', width / 2, height / 2 + 40);
}

// mouse function
function mousePressed(){
    // if on the starting screen and mouse is pressed then the game begins
    if(screen == 0){
  	screen=1
  	// if on the ending screen and the mouse is pressed then return to starter screen
  }else if(screen==2){
  	screen=0
  }
}

function reset(){
    // resets the score to o
	  score=0;
	  // resets the speed to 1
  	speed=1;
  	y=-20;
}