/**
 * Bounce. 
 * 
 * When the shape hits the edge of the window, it reverses its direction. 
 */
import ddf.minim.*;

Minim minim;
AudioSample kick;
int size = 60;       // Width of the shape
float xpos, ypos;    // Starting position of shape    

float xspeed;  // Speed of the shape
float yspeed;  // Speed of the shape

int xdirection = 1;  // Left or Right
int ydirection = 1;  // Top to Bottom
int fillcolor = 255;
String gamestate;
int keyvalue;
float counter,angle,speed;
PImage back;


void setup() 
{
  size(640, 633);
   background(102);
  back = loadImage("chessboard.jpg");
  minim = new Minim(this);
  kick = minim.loadSample("BD.mp3", 2048);
  frameRate(30);
  smooth();
  // Set the starting position of the shape
  xpos = width/2;
  ypos = height/2;
  gamestate="start";

}

void draw() 
{
 // background(102);
    image(back,0,0);
  if(gamestate=="start")
  {
   
   if (keyvalue==10)
  { counter++;
  
    angle = ((float)mouseY/(float)width) * 2 * PI;
    speed =  100-100*exp(-(counter/100));
    yspeed = speed*sin(angle);
    xspeed = speed*cos(angle);
    if (yspeed>0) ydirection = 1; else ydirection = -1;
    if (xspeed>0) xdirection = 1; else xdirection = -1;
    fill(255,0,0,255);
    stroke(255,0,0,255);
    line(xpos+size/2,ypos+size/2,xpos+size/2+200*cos(angle),ypos+size/2+200*sin(angle));
    rect(0,height-(speed*(height/100)),20,speed*(height/100));
    noStroke();

  } 
   if (keyvalue==100) gamestate="go";
  }
  
 if(gamestate=="go"){
  // Update the position of the shape
  xpos = xpos + ( xspeed);
  ypos = ypos + ( yspeed);
  yspeed = yspeed / 1.01;
  xspeed = xspeed / 1.01;
  if (abs(yspeed)<0.05 && abs(xspeed)<0.05) {background(fillcolor); tint(255,100);image(back,0,0);yspeed = 0; xspeed = 0; counter=0;gamestate="start";} 
  // Test to see if the shape exceeds the boundaries of the screen
  // If it does, reverse its direction by multiplying by -1
 
   if  (xpos < 0) {
     kick.trigger();
   xspeed *= -1;
   xpos = 0;
    if(fillcolor==0) fillcolor=255; else fillcolor=0;
    fill(fillcolor);
  }
  if (xpos > width-size) {
     kick.trigger();
   xspeed *= -1;
   xpos = width-size;
    if(fillcolor==0) fillcolor=255; else fillcolor=0;
    fill(fillcolor);
  }
 //  constrain(xpos,0,width-size);
  if (ypos < 0) {
     kick.trigger();
    yspeed *= -1;
    ypos = 0;
    if(fillcolor==0) fillcolor=255; else fillcolor=0;
    fill(fillcolor);
  }
    if (ypos > height-size) {
     kick.trigger();
     ypos = height-size;
    yspeed *= -1;
    if(fillcolor==0) fillcolor=255; else fillcolor=0;
    fill(fillcolor);
  }
//   constrain(ypos,0,height-size);
 }
  // Draw the shape
  ellipse(xpos+size/2, ypos+size/2, size, size);
}

void keyPressed()
{keyvalue = 10;}

void keyReleased()
{keyvalue=100;}

void mouseReleased()
{keyvalue=100;}

void mousePressed()
{keyvalue = 10;}

void stop()
{
  // always close Minim audio classes when you are done with them
  kick.close();
  minim.stop();
  
  super.stop();
}