//

// breakout.c

//

// Chashmeet Singh

//

// CS 50

//

// standard libraries

#define _XOPEN_SOURCE

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <time.h>

// Stanford Portable Library

#include "spl/gevents.h"

#include "spl/gobjects.h"

#include "spl/gwindow.h"

// height and width of game's window in pixels

#define HEIGHT 600

#define WIDTH 400

// number of rows of bricks

#define ROWS 5

// number of columns of bricks

#define COLS 10

// radius of ball in pixels

#define RADIUS 10

// lives

#define LIVES 3

// prototypes

void initBricks(GWindow window);

GOval initBall(GWindow window);

GRect initPaddle(GWindow window);

GLabel initScoreboard(GWindow window);

void updateScoreboard(GWindow window, GLabel label, int points);

GObject detectCollision(GWindow window, GOval ball);

double velocityX;

double velocityY;

int main(void)

{

// instantiate window

GWindow window = newGWindow(WIDTH, HEIGHT);

// instantiate bricks

initBricks(window);

// instantiate ball, centered in middle of window

GOval ball = initBall(window);

// instantiate paddle, centered at bottom of window

GRect paddle = initPaddle(window);

// instantiate scoreboard, centered in middle of window, just above ball

GLabel label = initScoreboard(window);

// number of bricks initially

int bricks = COLS * ROWS;

// number of lives initially

int lives = LIVES;

// number of points initially

int points = 0;

// wait for click before starting

waitForClick();

velocityX = 1.0;

velocityY = 2.5;

// keep playing until game over

while (lives > 0 && bricks > 0)

{

// Scoreboard

updateScoreboard(window, label, points);

// move ball

move(ball, velocityX, velocityY);

pause(10);

// check for mouse event.

GEvent event = getNextEvent(MOUSE_EVENT);

// Lock the paddle X to the cursor.

if (event != NULL)

{

// if the event was movement

if (getEventType(event) == MOUSE_MOVED)

{

// ensure paddle follows top cursor

double x = getX(event) - getWidth(paddle) / 2;

double y = 500;

setLocation(paddle, x, y);

}

}

GObject object = detectCollision(window, ball);

if (object != NULL)

{

// If the ball hits the paddle.

if (object == paddle)

{

velocityY = -velocityY;

}

// If the ball hits a block. Remove block, add a point, decrement count and bounce.

else if (strcmp(getType(object), "GRect") == 0)

{

removeGWindow(window, object);

velocityY = -velocityY;

points++;

bricks--;

}

}

// If the ball hits the right wall.

if (getX(ball) + getWidth(ball) >= getWidth(window))

{

velocityX = -velocityX;

}

// If the ball hits the left wall.

if (getX(ball) <= 0)

{

velocityX = -velocityX;

}

// If the ball hits the top wall.

if (getY(ball) <= 0)

{

velocityY = -velocityY;

}

// Remove a life. Start over.

if (getY(ball) + getHeight(ball) >= getHeight(window))

{

lives--;

//move ball to start

setLocation(ball, 190, 200);

//move paddle to start

setLocation(paddle, 160, 500);

waitForClick();

}

}

// You Lose Label Message for kicks.

if (bricks > 0)

{

GLabel game_over = newGLabel("YOU LOSE!");

setFont(game_over, "SansSerif-70");

setColor(game_over, "RED");

add(window, game_over);

setLocation(game_over, 15, 300);

}

else

{

GLabel game_over = newGLabel("YOU WIN!");

setFont(game_over, "SansSerif-70");

setColor(game_over, "GREEN");

add(window, game_over);

setLocation(game_over, 15, 300);

}

// wait for click before exiting

waitForClick();

// game over

closeGWindow(window);

return 0;

}

/**

* Initializes window with a grid of bricks.

*/

void initBricks(GWindow window)

{

// initial starting Y position of the bricks.

int brick_y = 50;

// the space between each line.

int row_space = 20;

// 5 rows of bricks.

for (int i = 0; i < ROWS; i++)

{

// initial starting X pos.

int brick_x = 2;

//10 bricks per row.

for (int j = 0; j < COLS; j++)

{

GRect brick = newGRect(brick_x + 5, brick_y, 35, 10);

// Setting colors based on row. Not elegant.

if (i == 0)

{

setColor(brick, "RED");

}

if (i == 1)

{

setColor(brick, "ORANGE");

}

if (i == 2)

{

setColor(brick, "YELLOW");

}

if (i == 3)

{

setColor(brick, "GREEN");

}

if (i == 4)

{

setColor(brick, "BLUE");

}

setFilled(brick, true);

add(window, brick);

brick_x = brick_x + 39;

}

brick_y = brick_y + 15;

}

}

/**

* Instantiates ball in center of window. Returns ball.

*/

GOval initBall(GWindow window)

{

GOval ball = newGOval(200 - 10, 200, 20, 20);

setColor(ball, "BLACK");

setFilled(ball, true);

add(window, ball);

return ball;

}

/**

* Instantiates paddle in bottom-middle of window.

*/

GRect initPaddle(GWindow window)

{

GRect paddle = newGRect(200 - 35, 500, 70, 10);

// purple color

setColor(paddle, "BLUE");

setFilled(paddle, true);

add(window, paddle);

return paddle;

}

/**

* Instantiates, configures, and returns label for scoreboard.

*/

GLabel initScoreboard(GWindow window)

{

GLabel label = newGLabel(" ");

setFont(label, "SansSerif-50");

setColor(label, "C0C0C0");

add(window, label);

setLocation(label, 185, 300);

return label;

}

/**

* Updates scoreboard's label, keeping it centered in window.

*/

void updateScoreboard(GWindow window, GLabel label, int points)

{

// update label

char s[12];

sprintf(s, "%i", points);

setLabel(label, s);

// center label in window

double x = (getWidth(window) - getWidth(label)) / 2;

double y = (getHeight(window) - getHeight(label)) / 2;

setLocation(label, x, y);

}

/**

* Detects whether ball has collided with some object in window

* by checking the four corners of its bounding box (which are

* outside the ball's GOval, and so the ball can't collide with

* itself). Returns object if so, else NULL.

*/

GObject detectCollision(GWindow window, GOval ball)

{

// ball's location

double x = getX(ball);

double y = getY(ball);

// for checking for collisions

GObject object;

// check for collision at ball's top-left corner

object = getGObjectAt(window, x, y);

if (object != NULL)

{

return object;

}

// check for collision at ball's top-right corner

object = getGObjectAt(window, x + 2 * RADIUS, y);

if (object != NULL)

{

return object;

}

// check for collision at ball's bottom-left corner

object = getGObjectAt(window, x, y + 2 * RADIUS);

if (object != NULL)

{

return object;

}

// check for collision at ball's bottom-right corner

object = getGObjectAt(window, x + 2 * RADIUS, y + 2 * RADIUS);

if (object != NULL)

{

return object;

}

// no collision

return NULL;

}