/********************************************************************
  File:         brickbreak.cc
  Author:       Dana Vrajitoru
                
  Project:      A simple 2D animation program based on the Breakout game.
  Last updated: February 6, 2017.

  The interface of the program, keeping all the objects together and
  definisng their interaction.

********************************************************************/

#include <cstdlib>
#include "glheader.h"
#include "Ball.h"
#include "brickbreak.h"

int winWidth = 500, winHeight = 500;

const float bwidth = 100, bheight = 100, rad = 2;
Ball theBall(rad);

// Draws all the objects in the scene
void draw()
{
    glClear(GL_COLOR_BUFFER_BIT);
    theBall.draw();
    glutSwapBuffers();

}

// Moves all the objects in the scene
void move()
{
    theBall.move();
    if (theBall.y < -rad)
        glutIdleFunc(NULL);
    glutPostRedisplay();
}



// Callback function for an Ascii key being pressed
void key(unsigned char key, int x, int y)
{
    switch (key) {
    case 'q':
    case 'Q':
        exit(0);
    case '1':
        glutPostRedisplay();
        break;
    }
}

// Callback function for a special key being pressed
void spkey(int key, int x, int y)
{
    switch (key) {
    case GLUT_KEY_LEFT:
        glutPostRedisplay();
        break;
    case GLUT_KEY_RIGHT:
        glutPostRedisplay();
        break;
    }
}

// Initializes all the objects with their initial positions.
void resetObj()
{
    theBall.setBox(bwidth, bheight);
    theBall.jumpTo(bwidth/2, rad);
    //theBall.set_speed(1, 1);
    theBall.randomizeSpeed(2);
}

// Application parameters
void myinit()
{
    resetObj();

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0, bwidth, 0, bheight);
    glMatrixMode(GL_MODELVIEW);
    glClearColor (0, 0, 0, 1.0);
    glColor3f(1.0,0.0,0.0);
    //glLineWidth(2);
    glPolygonMode( GL_FRONT_AND_BACK, GL_FILL);
}

// Initialize the window and the GUI callbacks
void initWindowGui()
{
  glutInitDisplayMode(GLUT_DOUBLE| GLUT_RGB );
  glutInitWindowSize(winWidth, winHeight);
  glutCreateWindow("Breakout");
  glutDisplayFunc(draw);
  glutIdleFunc(move);
  glutKeyboardFunc(key);
  //glutSpecialFunc(spkey);
  //glutMouseFunc(mouse);
}

// To be called whenever the window is resized.
void myResize(int w, int h)
{
    winWidth = w;
    winHeight = h;
    glViewport(0, 0, w, h);
}