#include "vhex/display.h"
#include "vhex/defs/types.h"

//TODO: dynamic
extern struct {
	uint32_t width;
	uint32_t height;
	uint32_t pixel[];
} font8x9;

/* dascii() : display one char */
void dascii(int x, int y, int fg, int bg, int n)
{
	uint32_t bit;
	uint32_t idx;
	uint32_t bitmap;
	int shift;

	if (n >= 0x80 || n <= 0x20)
		return;
	n -= 0x20;
	bit = n * font8x9.height * font8x9.width;
	idx = bit / 32;
	shift = bit & 31;
	bitmap = font8x9.pixel[idx];
	for (unsigned int i = 0; i < font8x9.height ; ++i) {
		for (unsigned int j = 0 ; j < font8x9.width ; j++) {
			if ((bitmap & (0x80000000 >> shift)) != 0) {
				dpixel(x + j, y + i, fg);
			} else {
				dpixel(x + j, y + i, bg);
			}
			shift += 1;
			if (shift >= 32) {
				bitmap = font8x9.pixel[++idx];
				shift = 0;
			}
		}
	}
}