/*
Billiard Table
 Jenna Klima
 12/12/14
 For Bruce Alan Martin
 
 Sorry guys I'm full of it.
 Arrays and classes and boundaries for things are so difficult! >.<
 Well I didn't make it anything special.
 Hopefully I pass this project.
 
 I'm going to make study props for the final.
 I'll do the rest of this and the last project afterward.
 Hopefully both will be accepted as complete when they're finished
 And hopefully I pass the final.
 And that my overall grade is B- or higher.
 
 @BAM: Why did you change my takehome from an A- to a C+?
 I did better on the takehome than the midterm.
 My midterm was a B-.
 */

//floats


//integers
int score = 0;

//booleans


//strings

//classes
class billiard {
  //billiard
  color c;
  float x = 0, y = 0;//-------------------position of this billiard
  float dx = 10, dy = 10;//---------------velocity (pixels per frame)

  //CONSTRUCTORS
  billiard ( color c0, float x0, float y0 ) {
    //3-arg constructor sets color & position
    c = c0;
    x = x0;
    y = y0;
  }
  billiard ( ) {
    //Default constructor must be defined if any others are defined
  }
  //METHODS
  void move ( ) {
    //move billiard by ( dx, dy )
    x = x + dx;
    y = y + dy;
    //bounce off walls
    if ( x < 75 ) { 
      dx = -dx;
    }
    if ( x > 525 ) { 
      dx = -dx;
    }
    if ( y < 75 ) { 
      dy = -dy;
    }
    if ( y > 325 ) { 
      dy = -dy;
    }
  }
  void show ( ) {
    //draw at ( x, y )
    fill ( c );
    //--  text ( c, x, y + 30 );
    ellipseMode ( CENTER );
    ellipse ( x, y, 25, 25 );//-----------diameter is 20
  }
}

//arrays
//instantiate billiards
billiard [ ] billiards = new billiard [ 3 ];

void setup ( ) {
  //setup background and playscreen size
  background ( 50 );
  size ( 700, 500 );

  //initialize 3 billiards
  billiards [ 0 ] = new billiard ( color ( 255, 0, 0 ), 100, 100 );
  billiards [ 1 ] = new billiard ( color ( 0, 225, 0 ), 100, 130 );
  billiards [ 2 ] = new billiard ( color ( 0, 0, 225 ), 100, 160 );
}
void initializeRed ( ) {
  //randomize billiard positions
  billiards [ 0 ] .x = 100 + random ( 100 ); 
  billiards [ 0 ] .y = 100;
}
void initializeGreen ( ) {
  billiards [ 1 ] .x = 100 + random ( 100 ); 
  billiards [ 1 ] .y = 130;
}
void initializeBlue ( ) {
  billiards [ 2 ] .x = 100 + random ( 100 ); 
  billiards [ 2 ] .y = 160;
}
void draw ( ) {
  //draw these things
  scene ( );
  titleInstructions ( );
  scoring ( );
  buttons ( );
  table ( );
  boundaries ( );
  billiards ( );
  physics ( );
}
void scene ( ) {
  //draw a background rectangle over the background to create corner effect
  noStroke ( );
  fill ( 75 );
  rect ( 0, 0, width, height, 100 );
}
void titleInstructions ( ) {
  //all text is here
  textSize ( 20 );
  fill ( 255 );
  text ( "Billiard Table", width / 2 - 70, height / 15 );
  fill ( 150 );
  text ( "Instructions", width / 14, height / 2 + 200 );
  textSize ( 12 );
  text ( "Press 1 to restart red, 2 to restart green, or 3 to restart blue. The buttons do similarly.", width / 14, height / 2 + 220 );
}
void scoring( ) {
  //scoring system is here
}
void buttons ( ) {
  //buttons system is here
}
void table ( ) {
  //the pool table is here
  stroke ( 25, 12, 0 );//-----------------brown rail
  strokeWeight ( 25 );
  fill ( 100, 50, 255 );//----------------light blue table
  rect ( width / 6 - 25, height / 6, 500, 300, 6 );//---------table w/ rail

  //6 pockets
  for ( int j = 0; j < 6; j++ ) {
    fill ( 0 );
  }
}
void boundaries ( ) {
  //the location constrain on the billiards is here
}
void billiards ( ) {
  //the billiards are here
  for ( int k = 0; k < 3; k++ ) {
    billiards [ k ] .show ( );
  }
}
void physics ( ) {
  //how the billiards move is here
  for ( int j = 0; j < 3; j++ ) {
    billiards [ j ] .move ( );
  }
  //check for collisions
  check ( billiards [ 0 ], billiards [ 1 ] );
  check ( billiards [ 0 ], billiards [ 2 ] );
  check ( billiards [ 1 ], billiards [ 2 ] );
}
void check (billiard p, billiard q ) {
  //eliminate "ringing" by moving both in new direction
  if ( dist ( p.x, p.y, q.x, q.y ) < 20 ) {
    p.x += 2 * p.dx; 
    p.y += 2 * p.dy;
    q.x += 2 * q.dx; 
    q.y += 2 * q.dy;
  }
}
void mousePressed ( ) {
  //this is what will happen when the buttons are pressed
}
void keyPressed ( ) {
  //this is what will happen when the 1, 2, 3, & Q keys are pressed
  //"1" restarts red billiard
  if ( key == '1' ) {
    initializeRed ( );
  }
  //"2" restarts green billiard
  if ( key == '2' ) {
    initializeGreen ( );
  }
  //"3" restarts blue billiard
  if ( key == '3' ) {
    initializeBlue ( );
  }
  //"Q" quits game
  if ( key == 'q' ) {
    exit ( );
  }
}