maze + pacdots cpp

#include <GL/glut.h>
#include <math.h>
#include "pacman_t1.h"

#define COLUMNS 19
#define ROWS 22

void init() //m
{
	glClearColor(0.0, 0.0, 0.2, 1.0); //sets background colour
	initGrid(COLUMNS, ROWS);
}

void display_callback() //m 
{
	glClear(GL_COLOR_BUFFER_BIT); 
	drawGrid();
	glutSwapBuffers(); 
}

void reshape_callback(int w, int h) //m
{
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    
    if (w <= h) 
    {
        glOrtho(0.0, COLUMNS, 0.0, COLUMNS * (GLfloat)h / (GLfloat)w, -1.0, 1.0);
    } else 
    {
        glOrtho(0.0, ROWS * (GLfloat)w / (GLfloat)h, 0.0, ROWS, -1.0, 1.0);
    }
    
    glMatrixMode(GL_MODELVIEW);
}


int main(int argc, char** argv)
{
	glutInit(&argc, argv);	
	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
	glutInitWindowSize(1400, 800);
	glutCreateWindow("Pacman");
	glutDisplayFunc(display_callback); 
	glutReshapeFunc(reshape_callback);
	init();
	
	glutMainLoop(); 
	
	return 0;
}