CS50 Pset4 Breakout Prototype2

//
// breakout.c
//
// Computer Science 50
// Problem Set 4
//

// standard libraries
#define _XOPEN_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

// Stanford Portable Library
#include "gevents.h"
#include "gobjects.h"
#include "gwindow.h"

// height and width of game's window in pixels
#define HEIGHT 600
#define WIDTH 400

//height and width of paddle in pixels
#define PH 20
#define PW 80

// h and w of ball in pixel
#define bal 15

// 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);

int main(void)
{
    // seed pseudorandom number generator
    srand48(time(NULL));


    // 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;
    int runtime=0;
    //initial velocity-x started
    double velocitx;
    double velocity;


    // keep playing until game over
    while (lives > 0 && bricks > 0)
    {
        updateScoreboard(window,label, points);
        //checking if its the 1st time the ball moves after losing
        if(runtime==0)
        {
            velocitx= 2.0;
            velocity =drand48()+2;
            waitForClick();
        }
        move(ball, velocitx, velocity);
        // TODO-paddle move-done-ball move to be improved(can hit several bricks in a row, in a strange way)
        GEvent event = getNextEvent(MOUSE_EVENT);

        // to know if we have 2 wait for click to move the ball
        runtime=runtime+1;

        // if event
        if (event != NULL)
        {
            // if event movement
            if (getEventType(event) == MOUSE_MOVED)
            {
                // move
                double x = getX(event) - getWidth(paddle) / 2;
                //let's check it the paddle isn't going out of the screen
                if (x>0 && x<WIDTH-PW)
                {
                    setLocation(paddle, x, HEIGHT-60-PH/2);
                }
            }
        }


        // bounce off right edge of window
        if (getX(ball) + getWidth(ball) >= getWidth(window))
        {
            velocitx = -velocitx;
        }
        else if (getX(ball) <= 0)
        {
            velocitx = -velocitx;
        }

        if (getY(ball)<=0)
        {
            velocity=-velocity;
        }
        else if(getY(ball) + getHeight(ball) >= getHeight(window) && runtime!=0)
        {
            lives=lives-1;
            runtime=0;
            while(getY(ball)+bal<HEIGHT)
            {}
            setLocation(ball,WIDTH/2-bal/2,HEIGHT/2);
            pause(20);
        }
        //lets talk collision now
        GObject object = detectCollision(window, ball);

        if(object!=NULL)
        {
            if (strcmp(getType(object), "GRect") == 0)
            {
                if (object==paddle)
                {
                    velocity=-velocity;
                }
                else
                {
                    points=points+1;
                    bricks=bricks-1;
                    removeGWindow(window,object);
                    if(velocity<0)
                    {
                        velocity=-velocity;
                    }
                    else
                    {
                        velocitx=-velocitx;
                    }
                }
            }
        }

        // linger before moving again
        pause(15);

    }
    if (bricks==0)
    {
        printf("You won! Thanks for playing!\n");
    }
    if(lives==0)
    {
        printf("You lost! Try playing again!\n");
    }

    // wait for click before exiting
    waitForClick();

    // game over
    closeGWindow(window);
    return 0;
}

/**
 * Initializes window with a grid of bricks.
 */
void initBricks(GWindow window)
{
    // TODO-done
    for (int i=0; i<ROWS;i++)
    {
        for (int j=0; j<COLS; j++)
        {
            GRect brick = newGRect(5+j*39,60+20*i,35,10);
            setFilled(brick, true);
            if (i==0)
            {
                setColor(brick,"RED");
            }
            else if (i==1)
            {
                setColor(brick,"YELLOW");
            }
            else if (i==2)
            {
                setColor(brick,"BLUE");
            }
            else if (i==3)
            {
                setColor(brick,"GREEN");
            }
            else
            {
                setColor(brick, "PINK");
            }
            add (window, brick);
        }
    }
}

/**
 * Instantiates ball in center of window.  Returns ball.
 */
GOval initBall(GWindow window)
{
    // TODO-done
    GOval ball = newGOval (WIDTH/2-bal/2,HEIGHT/2,bal,bal);
    setFilled(ball,true);
    setColor(ball, "BLACK");
    add(window, ball);
    return ball;
}

/**
 * Instantiates paddle in bottom-middle of window.
 */
GRect initPaddle(GWindow window)
{
    // TODO-Done
    //i want the paddle to be at the bottom but not too much and centered
    GRect Paddle = newGRect(WIDTH/2-PW/2,HEIGHT-60-PH/2,PW,PH);
    setFilled(Paddle,true);
    setColor(Paddle, "BLACK");
    add(window, Paddle);
    return Paddle;
}

/**
 * Instantiates, configures, and returns label for scoreboard.
 */
GLabel initScoreboard(GWindow window)
{
    // TODO-done
    GLabel label = newGLabel("");
    setFont(label, "SansSerif-36");
    add(window, label);
    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;
}