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

  File:          maze.cc
  Author:        Dana Vrajitoru

  Description:   The class handling the maze.
  Project:       A sprite moving through a maze application.

  Last updated:  February 10, 2011.

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

#include <GL/glut.h>
#include <cstdlib>
#include "bus.h"
#include "maze.h"

// Default constructor. Should initialize the table.
Maze::Maze()
{
  int i, j;
  static int tab[mazew][mazeh] = 
    {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
     {1, 0, 0, 0, 0, 0, 1, 0, 0, 1},
     {1, 1, 0, 1, 1, 0, 1, 0, 1, 1},
     {1, 0, 0, 0, 1, 0, 0, 0, 0, 1},
     {1, 0, 1, 1, 1, 0, 1, 1, 1, 1},
     {1, 0, 1, 0, 1, 0, 0, 0, 1, 1},
     {1, 0, 0, 0, 0, 0, 1, 0, 0, 1},
     {1, 1, 1, 0, 1, 0, 1, 0, 1, 1},
     {1, 0, 0, 0, 1, 0, 0, 0, 0, 1},
     {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}};
  for (i=0; i<mazew; i++)
    for (j=0; j<mazeh; j++)
      table[i][j] = Cell_type(tab[i][j]);
}

// Draws a single brick at given coordinates
void Maze::brick(int x, int y)
{
  GLfloat coords_out[4][2] = {{0.01, 0.01}, {0.99, 0.01}, 
                              {0.99, 0.99}, {0.01, 0.99}};
  GLfloat coords_in[4][2] = {{0.15, 0.15}, {0.85, 0.15}, 
                             {0.85, 0.85}, {0.15, 0.85}};
  // dark brown
  glColor3f(0.5, 0.35, 0.25);
  polygon(coords_out, float(x), float(y), 4);
  // light  brown
  glColor3f(0.8, 0.65, 0.55);
  polygon(coords_in, float(x), float(y), 4);
}

// Here is where we create the display lists
void Maze::init()
{
  int i, j;
  glNewList(mazeid, GL_COMPILE);
  for (i=0; i<mazew; i++)
    for (j=0; j<mazeh; j++)
      if (table[i][j] == wallCl)
        brick(i, j);
  glEndList();
}

// Calls the display lists assuming that the maze is drawn starting
// from 0, 0.
void Maze::draw()
{
  glCallList(mazeid);
}