#include "wrmr.h"
#include "vui.h"

int x = 0, y = 0;
int dx = 0, dy = 0;
int camx = 0, camy = 0;
int C = '*';
unsigned frame = 0;
int half_y = 0;

int main(void) {
	vui_init();

	int x = 0, y = 0;
	int scroll_x = 0, scroll_y = 0;
	for (;;) {
		static int last_left = 0;
		int left = (COLS - (72 < COLS ? 72 : COLS - 2)) >> 1;
		int right = COLS - left;
		int top = 5;
		int bottom = LINES - 5;

		//vui_fill(' ', FG_WHITE | BG_BLUE);
		//vui_fill_rect(' ', FG_BLACK | BG_BLACK, left + 2, top + 1, right - left, bottom - top);
		//vui_fill_rect(' ', FG_BLACK | BG_WHITE, left, top, right - left, bottom - top);

		if (y < top)  { scroll_y = top - y; }
		if (y > bottom)  { scroll_y = bottom - y; }

		scroll_x += left - last_left;
		last_left = left;

		int sdx = scroll_x > 0 ? 1 : (scroll_x < 0 ? -1 : 0);
		sdx = scroll_x;
		int sdy = scroll_y > 0 ? 1 : (scroll_y < 0 ? -1 : 0);
		vui_scroll(sdx, sdy);
		x += sdx;
		y += sdy;
		scroll_x -= sdx;
		scroll_y -= sdy;

		vui_blit();

		int animating = !!scroll_x || !!scroll_y;
		if (animating && !vui_wait_for_input(50)) continue;
		VuiKey c = vui_key();
		if (c == KEY_INVALID || c == KEY_ESC) goto done;
		if (x >= right) {
			x = left;
			y += 2;
		}
		static unsigned i = 0;
		i++;
		int tx = x + vui_aprintf(x, y - 1, (i & 1 ? FG_WHITE : FG_CYAN) | BG_BLACK, "%02X", c);
		vui_chra(x++, y, c < 0x20 || c > KEY_UTF8_MAX || c == 0x7f ? 0xfffd : c, FG_BYELLOW | BG_BLUE);
		while (x < tx) vui_chra(x++, y, ' ', FG_BYELLOW | BG_BLUE);
	}
done:

	vui_fini();
	return 0;
}