//2010 - programming
//Completed animation program from Wednesday class
//
//Copy and paste this program into your anim.cpp program.
//Compile and run it.
//
#include <unistd.h>
#include <iostream>
using namespace std;
const int SIZE = 20;

int main()
{
    char screen[SIZE][SIZE];
    int pos[2] = { 0, 9 };
    int dir = 1;
    system("clear");
    while (true) {
        //fill screen array
        for (int i=0; i<SIZE; i++)
            for (int j=0; j<SIZE; j++)
                screen[i][j] = 'X';
        //show the character
        screen[pos[1]][pos[0]] = ' ';
        //move the character
        pos[0] += dir;
        //check for collision
        if (pos[0] >= SIZE-1 || pos[0] <= 0)
            dir = -dir;
        //display screen
        cout << "\033[0;0H"; //<--- start drawing from the top
        cout << "2010 - 2d array animation" << endl;
        cout << "Press Ctrl-C to end\n" << endl;
        for (int i=0; i<SIZE; i++) {
            for (int j=0; j<SIZE; j++) {
                cout << screen[i][j] << screen[i][j];
            }
            cout << endl;
        }
        //pause for 4/100 of a second
        usleep(40000);
    }
    return 0;
}