idiotically simple ncurses ascii art program

ascii.c

// Controls:
//  - Arrow keys - move cursor
//  - Esc - toggle reprint of last character on movement
//  - ^C - exit program, printing the screen to standard output

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <ncurses.h>

int x = 0, y = 0, maxx = 0, maxy = 0;
int lastc = ' ';

bool repeat = false;

void init(void) {
    initscr();
    raw();
    keypad(stdscr, true);
    noecho();
    getmaxyx(stdscr, maxy, maxx);
}

void print_screen(void) {
    for (y = 0; y < maxy; y++) {
        int endx = maxx - 1;
        while (endx > 0 && mvinch(y, endx) == 32)
            endx--;
        for (x = 0; x <= endx; x++)
            printf("%c", mvinch(y, x));
        printf("\n");
    }
}

bool handle_input(void) {
    int c = getch();
    switch(c) {
    case KEY_UP:
        if (y > 0) y--;
        break;
    case KEY_DOWN:
        if (y + 1 < maxy) y++;
        break;
    case KEY_LEFT:
        if (x > 0) x--;
        break;
    case KEY_RIGHT:
        if (x + 1 < maxx) x++;
        break;
    case 27: // escape key
        repeat = !repeat;
        break;
    case 3: // ^C
        endwin();
        print_screen();
        return false;
    default:
        addch(c);
        lastc = c;
        break;
    }
    move(y, x);
    if (repeat) {
        addch(lastc);
        move(y, x);
    }
    refresh();
    return true;
}

int main() {
    init();
    while (handle_input());
    return 0;
}