float pacX,pacY,pacXS,pacYS,pacAng;
float ballX, ballY;
float ballXS, ballYS;

float PACSPEED;

float mouth = PI/4;
float mouthspeed = -.1;


void setup() {
  size(200, 200);
  strokeCap(SQUARE); 
  frameRate(30);
  resetBall();
  pacX = width*3/4;
  pacY = width/2;
  pacXS = width/80;
  pacYS = 0;
 // noCursor();
PACSPEED = width/100;
textAlign(CENTER,CENTER);
textSize(16);
  lowLag.init();
  lowLag.load("blip1.mp3");
  lowLag.load("blip2.mp3");
  lowLag.load("pac.mp3");
  lowLag.load("gameend.mp3");
}


String showScore="";
int score = 0;
float scorePos;
void doScore(){
 showScore = " last score: "+ score; 
 scorePos = width *1.5;
 score = 0;
}

boolean virgin = true;
void mousePressed(){
 virgin = false; 
}


void resetBall(){
  ballX = width/2;
  ballY = height/2;
  ballXS = -width/100;
  ballYS = random(-height/100,height/100);  
}



int clicksTilTurn = 20;

void draw() {
  background(0);
  
  
  
  strokeWeight(width/40);
  stroke(255);
  line(0, height/20, width, height/20);
  line(0, height*19/20, width, height*19/20);

fill(255);


text(showScore,scorePos,height/2);
scorePos -= width/50;

float s = 15;
  for (int i = 0; i <= s; i++) {
    float y = lerp(height/20, height*18/20, i/s) ;
    line(width/2, y, width/2,y + ceil(height/(s*3)));

  }
  float pos = constrain(mouseY,height/20+height/16,height*19/20-height/16);
  line(width/20,pos - height/16, width/20,pos+height/16);
  line(width*19/20,pos - height/16, width*19/20,pos+height/16);
  

if(virgin){

  text("CLICK TO PLAY\nGAME JAM PAC PONG",width/2,height/2); 
return;
}



  fill(255,255,0);
  noStroke();
  
  if(dist(ballX,ballY,pacX,pacY)< width/24){ //pacman got it
   doScore(); 
   resetBall();
   lowLag.play("pac.mp3");
  }
  
  pacX += pacXS;
  pacY += pacYS;
  pushMatrix();
  translate(pacX,pacY);
  rotate(pacAng);
  arc(0,0,width/8, height/8,mouth,2*PI-mouth);
  popMatrix();
  
  turnPac();
  
  
  
  mouth += mouthspeed;
  if(mouth < 0){
   mouth = 0;
  mouthspeed = .2; 
  }
  if(mouth > PI/4){
   mouth = PI/4;
  mouthspeed = -.2; 
  }
  
  
  fill(255);
  strokeWeight(width/10);
  ballX += ballXS;
  ballY += ballYS;
  
  if(ballY < height/20){
    ballY = height/20;
    ballYS *= -1;
  }
  if(ballY > height*18.5/20){
    ballY = height*18.5/20;
    ballYS *= -1;
  }  
  if(ballY < height*1.5/20){
    ballY = height*1.5/20;
    ballYS *= -1;
  }
  //bounce on right
  if(abs(ballX - width*19/20) < height/30
  && abs(ballY - pos) < height/16){
   ballXS = -abs(ballXS) ;   
    ballX =   width*19/20 - height/30;
    ballYS = (ballY-pos)/(height/30);
    score++;
    lowLag.play("blip1.mp3");
}
//bounce on left
  if(abs(ballX - width/20) < height/30
  && abs(ballY - pos) < height/16){
   ballXS = abs(ballXS);
   ballX =  width/20 + height/30;
    ballYS = (ballY-pos)/(height/30);
   score++;
   lowLag.play("blip2.mp3");
  }
  
  if(ballX <0){
   resetBall(); 
   doScore();
   lowLag.play("gameend.mp3");
  }
  if(ballX >  width){
   resetBall();
  doScore(); 
  lowLag.play("gameend.mp3");
  }
  
  ellipse(ballX,ballY,width/20,width/20);
  
}


void turnPac(){
 clicksTilTurn--;
  if(clicksTilTurn <= 0){
     clicksTilTurn = ceil(random(5,20));
    
    if(abs(pacX-ballX) > abs(pacY-ballY)){
     if(ballX > pacX) pacAng = 0; 
      else pacAng = PI;  
  } else {
     if(ballY > pacY) pacAng = PI/2; 
      else pacAng = PI*3/2;  
      
    }
    
    
   pacXS = PACSPEED * cos(pacAng);
   pacYS = PACSPEED * sin(pacAng);
  // println(clicks);
  } 
}